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| author | William Joye <wjoye@cfa.harvard.edu> | 2016-11-02 19:11:06 (GMT) |
|---|---|---|
| committer | William Joye <wjoye@cfa.harvard.edu> | 2016-11-02 19:11:06 (GMT) |
| commit | 33c55bd916dff8c4932b01c7db58f0103ac31c31 (patch) | |
| tree | a4cdca3287dd2df5247ce8079c424ffa438b4c2e /ast/xml.c | |
| parent | 4121637f3d41d6dc23e6543a445b5a3aed9e6ddc (diff) | |
| download | blt-33c55bd916dff8c4932b01c7db58f0103ac31c31.zip blt-33c55bd916dff8c4932b01c7db58f0103ac31c31.tar.gz blt-33c55bd916dff8c4932b01c7db58f0103ac31c31.tar.bz2 | |
update ast
Diffstat (limited to 'ast/xml.c')
| -rw-r--r-- | ast/xml.c | 7119 |
1 files changed, 0 insertions, 7119 deletions
diff --git a/ast/xml.c b/ast/xml.c deleted file mode 100644 index 541132d..0000000 --- a/ast/xml.c +++ /dev/null @@ -1,7119 +0,0 @@ -/* -* Name: -* xml.c - -* Purpose: -* Implement XML functions for AST. - -* Description: -* This file implements the Xml module which provides generic XML -* reading and writing functions for the XmlChan class. - -* Copyright: -* Copyright (C) 1997-2006 Council for the Central Laboratory of the -* Research Councils - -* Licence: -* This program is free software: you can redistribute it and/or -* modify it under the terms of the GNU Lesser General Public -* License as published by the Free Software Foundation, either -* version 3 of the License, or (at your option) any later -* version. -* -* This program is distributed in the hope that it will be useful, -* but WITHOUT ANY WARRANTY; without even the implied warranty of -* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -* GNU Lesser General Public License for more details. -* -* You should have received a copy of the GNU Lesser General -* License along with this program. If not, see -* <http://www.gnu.org/licenses/>. - -* Authors: -* DSB: David S. Berry (Starlink) - -* History: -* 22-OCT-2003 (DSB): -* Original version. -* 12-JAN-2004 (DSB): -* Major revisions. -* 10-FEB-2004 (DSB): -* - Added debug conditional code to keep track of memory leaks. -* - Other minor bug fixes. -* 6-FEB-2004 (DSB): -* DefaultURI and astXmlAddURI modified to allow a blank URI to be -* used to ignore a default namespace URI provided by an enclosing -* element. -* 29-NOV-2004 (DSB): -* Added astXmlGetType method. -* 27-JAN-2005 (DSB): -* - Move astXmlTrace and associated code into conditional -* compilation blokc (included if DEBUG macro is defined). This -* speeds up the create and destruction of XmlObjects in non-DEBUG code. -* - Renamed the private Delete function as astXmlDelete and gave -* it protected access. -* - Modify astXmlDelete so that it can succesfully annul objects -* which have no parent. -* - Include extra info in some error messages. -* 1-MAR-2006 (DSB): -* Replace astSetPermMap within DEBUG blocks by astBeginPM/astEndPM. -* 10-DEC-2008 (DSB): -* Allow a prefix to be included with the attribute name in -* astXmlGetAttributeValue. -*/ - - -/* Module Constants. */ -/* ----------------- */ -/* Set the name of the module we are implementing. This indicates to - the header files that define class interfaces that they should make - "protected" symbols available. NB, this module is not a proper AST - class, but it defines this macro sanyway in order to get the protected - symbols defined in memory.h */ -#define astCLASS Xml - -#define IND_INC 3 - - -/* Include files. */ -/* ============== */ -/* Interface definitions. */ -/* ---------------------- */ -#include "memory.h" /* Interface to the memory management module */ -#include "error.h" /* Interface to the error module */ -#include "xml.h" /* Interface to this module */ -#include "globals.h" /* Thread-safe global data access */ - -/* Error code definitions. */ -/* ----------------------- */ -#include "ast_err.h" /* AST error codes */ - -/* C header files. */ -/* --------------- */ -#include <stdarg.h> -#include <stdio.h> -#include <string.h> -#include <ctype.h> - - -/* -* Name: -* MAKE_CHECK - -* Type: -* Private macro. - -* Purpose: -* Implement the astXmlCheck<type>_ function for XML structures. - -* Synopsis: -* #include "xml.h" -* MAKE_CHECK(type,id) - -* Class Membership: -* Defined by the xml module. - -* Description: -* This macro expands to an implementation of the protected -* astXmlCheck<type>_ function (q.v.) which validates membership of -* a specified XML data type. - -* Parameters: -* type -* The type whose membership is to be validated (e.g. "Element" not -* "XmlElement"). -* id -* The constant (e.g. "AST__XMLELEM") defining the data type. - -* Notes: -* - To avoid problems with some compilers, you should not leave any white -* space around the macro arguments. -*/ - -/* Define the macro. */ -#define MAKE_CHECK(type,id) \ -\ -/* Declare the function */ \ -AstXml##type *astXmlCheck##type##_( void *this, int nullok, int *status ) { \ -\ -/* Local Variables: */\ - AstXml##type *result; /* The returned pointer */\ -\ -/* Check the global error status. If an error has already occurred just\ - return the supplied pointer. This is so that functions such as\ - astXmlAnnul which do not check the inherited status receive the\ - supplied pointer. */\ - if( !astOK ) return this;\ -\ -/* Initialise */\ - result = NULL;\ -\ -/* If the pointer is NULL issue an error if nullok is zero. */\ - if( !this ) {\ - if( !nullok ) astError( AST__PTRIN, "astXmlCheck"#type": Invalid "\ - "NULL pointer supplied." , status);\ -\ -/* Otherwise get the "type" component which holds a magic value for each\ - different class of structure. Compare this value against all valid \ - classes of structure. If no match is found, the pointer does not \ - identify an suitable structure, and so report an error and return \ - NULL. */\ - } else {\ - if( !astXmlCheckType( ( AstXmlObject * ) this, id ) ) {\ - astError( AST__PTRIN, "astXmlCheck"#type": Invalid pointer "\ - "supplied; pointer to AstXml"#type" required." , status);\ - } else {\ - result = (AstXml##type *) this;\ - }\ - }\ -\ -/* Return the result. */\ - return result;\ -} - - -/* Module variables. */ -/* ================= */ - -/* Define macros for accessing all items of thread-safe global data - used by this module. */ -#ifdef THREAD_SAFE - -#define next_id astGLOBAL(Xml,Next_ID) -#define gettag_buff astGLOBAL(Xml,GetTag_Buff) -#define GLOBAL_inits globals->Next_ID = 0; -astMAKE_INITGLOBALS(Xml) - -/* Set up mutexes */ -static pthread_mutex_t mutex1 = PTHREAD_MUTEX_INITIALIZER; -#define LOCK_MUTEX1 pthread_mutex_lock( &mutex1 ); -#define UNLOCK_MUTEX1 pthread_mutex_unlock( &mutex1 ); - -/* If thread safety is not needed, declare globals at static variables. */ -#else - -static int next_id = 0; -static char gettag_buff[ AST__XML_GETTAG_BUFF_LEN + 1 ]; - -#define LOCK_MUTEX1 -#define UNLOCK_MUTEX1 - -#ifdef DEBUG /* Not available in thread-safe compilations */ -static int nobj = 0; -static AstXmlObject **existing_objects = NULL; -#endif - -#endif - - -/* Function prototypes. */ -/* ==================== */ - -/* Private member functions. */ -/* ------------------------- */ -static AstXmlAttribute *FindAttribute( AstXmlElement *, const char *, int * ); -static AstXmlAttribute *NewAttribute( const char *, const char *, const char *, int * ); -static AstXmlDocument *NewDocument( int * ); -static AstXmlPrologue *NewPrologue( AstXmlDocument *, int * ); -static AstXmlNamespace *NewNamespace( const char *, const char *, int * ); -static char *AppendChar( char *, int *, char, int * ); -static char *AppendLine( char *, int *, const char *, int, int * ); -static char *RemoveEscapes( const char *, int * ); -static char *CleanText( const char *, int * ); -static const char *AddEscapes( const char *, int * ); -static const char *DefaultURI( AstXmlElement *, int * ); -static const char *Format( AstXmlObject *, int, int * ); -static char *FormatTag( AstXmlObject *, int, int * ); -static const char *ResolvePrefix( const char *, AstXmlElement *, int * ); -static int CheckType( long int, long int, int * ); -static int MatchName( AstXmlElement *, const char *, int * ); -static int Ustrcmp( const char *, const char *, int * ); -static void AddContent( AstXmlParent *, int, AstXmlContentItem *, int * ); -static void CheckName( const char *, const char *, const char *, int, int * ); -static void CheckPrefName( char *, const char *, const char *, int * ); -static void CleanXml( AstXmlObject *, long int, int * ); -static void InitXmlAttribute( AstXmlAttribute *, int, const char *, const char *, const char *, int * ); -static void InitXmlCDataSection( AstXmlCDataSection *, int, const char *, int * ); -static void InitXmlWhite( AstXmlWhite *, int, const char *, int * ); -static void InitXmlBlack( AstXmlBlack *, int, const char *, int * ); -static void InitXmlComment( AstXmlComment *, int, const char *, int * ); -static void InitXmlDocument( AstXmlDocument *, int, int * ); -static void InitXmlPrologue( AstXmlPrologue *, int, int * ); -static void InitXmlDeclPI( AstXmlDeclPI *, int, const char *, int * ); -static void InitXmlDTDec( AstXmlDTDec *, int, const char *, const char *, const char *, int * ); -static void InitXmlElement( AstXmlElement *, int, const char *, const char *, int * ); -static void InitXmlNamespace( AstXmlNamespace *, int, const char *, const char *, int * ); -static void InitXmlObject( AstXmlObject *, long int, int * ); -static void InitXmlPI( AstXmlPI *, int, const char *, const char *, int * ); -static AstXmlElement *ReadContent( AstXmlDocument **, int, int (*)( AstXmlElement *, int * ), int, char (*)( void *, int * ), void *, int, int * ); - -#ifdef DEBUG -static void AddObjectToList( AstXmlObject * ); -static void RemoveObjectFromList( AstXmlObject * ); -#endif - -/* Function implementations. */ -/* ========================= */ - -/* Create the astXmlCheck... functiosn which check a pointer identifies - an XML structure of a given type. */ - -MAKE_CHECK(Document,AST__XMLDOC) -MAKE_CHECK(Object,AST__XMLOBJECT) -MAKE_CHECK(Element,AST__XMLELEM) -MAKE_CHECK(Attribute,AST__XMLATTR) -MAKE_CHECK(CDataSection,AST__XMLCDATA) -MAKE_CHECK(Comment,AST__XMLCOM) -MAKE_CHECK(PI,AST__XMLPI) -MAKE_CHECK(Namespace,AST__XMLNAME) -MAKE_CHECK(Prologue,AST__XMLPRO) -MAKE_CHECK(DeclPI,AST__XMLDEC) -MAKE_CHECK(DTDec,AST__XMLDTD) -MAKE_CHECK(White,AST__XMLWHITE) -MAKE_CHECK(Black,AST__XMLBLACK) -MAKE_CHECK(CharData,AST__XMLCHAR) -MAKE_CHECK(ContentItem,AST__XMLCONT) -MAKE_CHECK(MiscItem,AST__XMLMISC) -MAKE_CHECK(Parent,AST__XMLPAR) - - -static void AddContent( AstXmlParent *this, int where, AstXmlContentItem *item, int *status ){ -/* -* Name: -* AddContent - -* Purpose: -* Add a content item to an XmlElement. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* void AddContent( AstXmlParent *this, int where, AstXmlContentItem *item, int *status ) - -* Description: -* This function adds a supplied item to a specified XmlElement or -* XmlDocument. An error is reported if the item is not appropriate. - -* Parameters: -* this -* The pointer to the element or document to be modified. -* where -* Ignored if "this" is an XmlElement pointer. Otherwise, "where" -* indicates where the item should be added to the document: -* 1 - In the prologue, after the XML declaration but before the DTD. -* 2 - In the prologue, after the DTD but before the root element. -* 3 - In the epilogue, after the root element. -* item -* Pointer to the content item to be added to the element. If -* "this" is an XmlElement, this can be a pointer to any of the -* following types: AstXmlElement, AstXmlWhite, AstXmlBlack, -* AstXmlCDataSection, AstXmlComment, AstXmlPI. If "this" is a -* document, the list is restricted to: AstXmlWhite, AstXmlComment, -* AstXmlPI. -* status -* Pointer to the inherited status variable. -*/ - -/* Local Variables: */ - AstXmlDocument *doc; /* Document pointer */ - AstXmlElement *elem; /* Element pointer */ - AstXmlPrologue *pro; /* Prologue pointer */ - int nitem; /* Number of items in the parent */ - -/* Check the global error status and the supplied pointers. */ - if( !astOK || !this || !item ) return; - -/* Split for the two forms of parent. */ - if( astXmlCheckType( this, AST__XMLELEM ) ) { - elem = (AstXmlElement *) this; - -/* Save the number of content items currently stored in the element. */ - nitem = ( elem->items ) ? elem->nitem : 0; - -/* Attempt to extend the array to hold an extra item. */ - elem->items = astGrow( elem->items, nitem + 1, - sizeof( AstXmlContentItem * ) ); - -/* Check the memory was allocated succesfully. */ - if( astOK ) { - -/* Store the supplied pointer in the array of content items. */ - elem->items[ nitem ] = item; - -/* Increment the number of content items in this element */ - elem->nitem = nitem + 1; - -/* Indicate that the item is owned by the element. */ - ( (AstXmlObject *) item )->parent = this; - } - -/* Now deal with cases where we are adding an item to the prologue or - epilogue of the document. */ - } else { - if( !astXmlCheckType( item, AST__XMLMISC ) ){ - astError( AST__INTER, "AddContent(xml): Inappropriate attempt to " - "add an item of type %ld to an XML document (internal " - "AST programming error).", status, ( (AstXmlObject *) item)->type ); - - } else if( !astXmlCheckType( this, AST__XMLDOC ) ){ - astError( AST__INTER, "AddContent(xml): Inappropriate attempt to " - "add an item of type %ld to an XML object of type %ld " - "(internal AST programming error).", status, - ( (AstXmlObject *) item)->type, - ( (AstXmlObject *) this)->type ); - - } else { - doc = (AstXmlDocument *) this; - -/* Create a prologue if necessary. */ - if( where < 3 && !doc->prolog ) doc->prolog = NewPrologue( doc, status ); - pro = doc->prolog; - - if( where < 2 ) { - nitem = ( pro->misc1 ) ? pro->nmisc1 : 0; - pro->misc1 = astGrow( pro->misc1, nitem + 1, sizeof( AstXmlMiscItem * ) ); - if( astOK ) { - pro->misc1[ nitem ] = item; - pro->nmisc1 = nitem + 1; - ( (AstXmlObject *) item )->parent = (AstXmlParent *) pro; - } - - } else if( where == 2 ) { - nitem = ( pro->misc2 ) ? pro->nmisc2 : 0; - pro->misc2 = astGrow( pro->misc2, nitem + 1, sizeof( AstXmlMiscItem * ) ); - if( astOK ) { - pro->misc2[ nitem ] = item; - pro->nmisc2 = nitem + 1; - ( (AstXmlObject *) item )->parent = (AstXmlParent *) pro; - } - - } else { - nitem = ( doc->epilog ) ? doc->nepi : 0; - doc->epilog = astGrow( doc->epilog, nitem + 1, sizeof( AstXmlMiscItem * ) ); - if( astOK ) { - doc->epilog[ nitem ] = item; - doc->nepi = nitem + 1; - ( (AstXmlObject *) item )->parent = this; - } - } - } - } -} - -static const char *AddEscapes( const char *text, int *status ){ -/* -* Name: -* AddEscapes - -* Purpose: -* Replaces characters by corresponding entity references. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* const char *AddEscapes( const char *text, int *status ) - -* Description: -* This function produces a dynamic copy of the supplied text in which -* occurrences of "&", "<", ">", and "\"" are replaced by the corresponding -* XML entity reference. -* -* The "&" character is only replaced by an entity reference if it is -* followed by a non-name character (i.e. anything except a letter -* underscore or colon). If it is followed by a name character, it is -* assumed to mark the start of an entity reference. - -* Parameters: -* text -* A pointer to a text string. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A pointer to a dynamically allocated string containing the required -* copy. - -* Notes: -* - NULL is returned if this function is called with the global error -* status set, or if it should fail for any reason. -*/ - -/* Local Variables: */ - char *result; /* Returned pointer */ - const char *c; /* Pointer to next supplied character */ - char *d; /* Pointer to next returned character */ - -/* Initialise */ - result = NULL; - -/* Return if the pointer is NULL or if an error has occurred. */ - if( !astOK || !text ) return result; - -/* Allocate the maximum possible amount of memory that may be needed to - store the returned string. */ - result = astMalloc( 6*strlen( text ) + 1 ); - -/* Check the pointer can be used safely. */ - if( astOK ) { - -/* Loop round every character in the supplied text. */ - c = text - 1; - d = result; - while( *(++c) ) { - -/* We replace this character if it is a <, >, ', &, or ". */ - if( *c == '<' ) { - strcpy( d, "<" ); - d += 4; - - } else if( *c == '>' ) { - strcpy( d, ">" ); - d += 4; - - } else if( *c == '"' ) { - strcpy( d, """ ); - d += 6; - - } else if( *c == '\'' ) { - strcpy( d, "'" ); - d += 6; - - } else if( *c == '&' ) { - strcpy( d, "&" ); - d += 5; - -/* Otherwise just append the supplied character. */ - } else { - *(d++) = *c; - } - } - -/* Terminate the returned string. */ - *d = 0; - -/* Reallocate the string to free up any unused space. */ - result = astRealloc( result, d - result + 1 ); - } - -/* Return the result. */ - return (const char *) result; -} - - -#ifdef DEBUG -static void AddObjectToList( AstXmlObject *obj ){ -/* -* Name: -* AddObjectToList - -* Purpose: -* Adds an XmlObject to a static list of all currently active XmlObjects. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* void AddObjectToList( AstXmlObject *obj ) - -* Description: -* This function adds the supplied pointer to a static list of pointers, -* and increments the number of elements in the list. This list holds -* pointers to all the XmlObjects which currently exist. - -* Parameters: -* this -* A pointer to a new XmlObject. -*/ - -/* Return if the pointer is NULL or if an error has occurred. */ - if( !astOK || !obj ) return; - -/* Increment the number of objects in the list and increase the size of - the list. */ - astBeginPM; - existing_objects = astGrow( existing_objects, ++nobj, sizeof( AstXmlObject *) ); - astEndPM; - -/* Add the new pointer to the end of the list. */ - existing_objects[ nobj - 1 ] = obj; -} -#endif - -static char *AppendChar( char *str1, int *nc, char ch, int *status ) { -/* -* Name: -* AppendChar - -* Purpose: -* Append a character to a string which grows dynamically. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* char *AppendChar( char *str1, int *nc, char ch, int *status ) - -* Description: -* This function appends a character to a dynamically -* allocated string, extending the dynamic string as necessary to -* accommodate the new character (plus the final null). - -* Parameters: -* str1 -* Pointer to the null-terminated dynamic string, whose memory -* has been allocated using the AST memory allocation functions -* defined in "memory.h". If no space has yet been allocated for -* this string, a NULL pointer may be given and fresh space will -* be allocated by this function. -* nc -* Pointer to an integer containing the number of characters in -* the dynamic string (excluding the final null). This is used -* to save repeated searching of this string to determine its -* length and it defines the point where the new string will be -* appended. Its value is updated by this function to include -* the extra characters appended. -* -* If "str1" is NULL, the initial value supplied for "*nc" will -* be ignored and zero will be used. -* ch -* The character which is to be appended to "str1". -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A possibly new pointer to the dynamic string with the new character -* appended (its location in memory may have to change if it has to -* be extended, in which case the original memory is automatically -* freed by this function). When the string is no longer required, -* its memory should be freed using astFree. - -* Notes: -* - If this function is invoked with the global error status set -* or if it should fail for any reason, then the returned pointer -* will be equal to "str1" and the dynamic string contents will be -* unchanged. -*/ - -/* Local Variables: */ - char *result; /* Pointer value to return */ - int len; /* Length of new string */ - -/* Initialise. */ - result = str1; - -/* If the first string pointer is NULL, also initialise the character - count to zero. */ - if ( !str1 ) *nc = 0; - -/* Check the global error status. */ - if ( !astOK ) return result; - -/* Calculate the total string length once the character has been added. */ - len = *nc + 1; - -/* Extend the dynamic string to the required length, including - a final null. Save the resulting pointer, which will be - returned. */ - result = astGrow( str1, len + 1, sizeof( char ) ); - -/* If OK, append the second string and update the total character - count. */ - if ( astOK ) { - result[ *nc ] = ch; - *nc = len; - result[ *nc ] = 0; - } - -/* Return the result pointer. */ - return result; -} - -static char *AppendLine( char *str1, int *nc, const char *str2, int ind, int *status ) { -/* -* Name: -* AppendLine - -* Purpose: -* Append an indented new line to another string which grows dynamically. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* char *AppendLine( char *str1, int *nc, const char *str2, int ind, int *status ) - -* Description: -* This function appends one string to another dynamically -* allocated string, extending the dynamic string as necessary to -* accommodate the new characters (plus the final null). -* -* A newline character is inserted if necessary to ensure that the "str2" -* string starts on a newline. If "ind" is positive, spaces are added -* as necessary to ensure that "str2" begins with the specified number of -* spaces. - -* Parameters: -* str1 -* Pointer to the null-terminated dynamic string, whose memory -* has been allocated using the AST memory allocation functions -* defined in "memory.h". If no space has yet been allocated for -* this string, a NULL pointer may be given and fresh space will -* be allocated by this function. -* nc -* Pointer to an integer containing the number of characters in -* the dynamic string (excluding the final null). This is used -* to save repeated searching of this string to determine its -* length and it defines the point where the new string will be -* appended. Its value is updated by this function to include -* the extra characters appended. -* -* If "str1" is NULL, the initial value supplied for "*nc" will -* be ignored and zero will be used. -* str2 -* Pointer to a constant null-terminated string, a copy of which -* is to be appended to "str1". -* ind -* The number of spaces to use as the indentation string. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A possibly new pointer to the dynamic string with the new string -* appended (its location in memory may have to change if it has to -* be extended, in which case the original memory is automatically -* freed by this function). When the string is no longer required, -* its memory should be freed using astFree. - -* Notes: -* - If this function is invoked with the global error status set -* or if it should fail for any reason, then the returned pointer -* will be equal to "str1" and the dynamic string contents will be -* unchanged. -*/ - -/* Local Variables: */ - char *c; /* Point to next character */ - char *result; /* Pointer value to return */ - char *temp; /* Pointer to modified string */ - int j; /* Loop count */ - -/* Initialise. */ - result = str1; - -/* If the first string pointer is NULL, also initialise the character - count to zero. */ - if ( !str1 ) *nc = 0; - -/* Check the global error status. */ - if ( !astOK || !str2 ) return result; - -/* Remove any trailing white space (except for newlines) from the supplied - string. */ - if( *nc > 0 ) { - c = str1 + *nc - 1; - while( isspace( *c ) && *c != '\n' ) { - *(c--) = 0; - (*nc)--; - } - -/* If the last character in the returned string is not now a newline, - append a newline, so long as the new item does not start with a newline. */ - if( str1[ *nc - 1 ] != '\n' ) { - temp = AppendChar( str1, nc, '\n', status ); - } else { - temp = str1; - } - - } else { - temp = str1; - } - -/* If a fixed indentation is specified, skip over any leading spaces in - the second string. */ - if( str2 ) { - if( ind > 0 ) { - while( isspace( *str2 ) ) str2++; - } - -/* If the first character of the second string is a newline, ignore it. */ - if( str2[ 0 ] == '\n' ) str2++; - } - -/* Append the indentation string. */ - for( j = 0; j < ind; j++ ) temp = AppendChar( temp, nc, ' ', status ); - -/* Append the supplied string. */ - return astAppendString( temp, nc, str2 ); -} - -void astXmlAddAttr_( AstXmlElement *this, const char *name, const char *value, - const char *prefix, int *status ){ -/* -*+ -* Name: -* astXmlAddAttr - -* Purpose: -* Add an attribute to an XmlElement. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlAddAttr( AstXmlElement *this, const char *name, -* const char *value, const char *prefix ) - -* Description: -* This function adds an attribute to a specified XmlElement. If the -* element already contains an attribute with the given name amd prefix, -* then the value of the attribute is changed to be the supplied value. - -* Parameters: -* this -* The pointer to the element to be modified. -* name -* Pointer to a null terminated string containing the attribute name. -* value -* Pointer to a null terminated string containing the attribute value. -* prefix -* The namespace prefix for the attribute. May be NULL or blank, in -* which case any prefix at the start of "name" is used. -*- -*/ - -/* Local Variables: */ - AstXmlAttribute *attr; /* The new attribute. */ - AstXmlAttribute *oldattr; /* Pointer to existing attribute */ - int i; /* Loop index */ - int nattr; /* Number of attributes in the element */ - int oldi; /* Index of existing attribute */ - char *my_value; /* Cleaned value text */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Initialise */ - oldattr = NULL; - -/* Clean the value text. */ - my_value = CleanText( value, status ); - -/* Create a new XmlAttribute. */ - attr = NewAttribute( name, my_value, prefix, status ); - -/* Free the memory */ - my_value = astFree( my_value ); - -/* If OK, indicate that the attribute is owned by the element. */ - if( astOK ) { - ( (AstXmlObject *) attr )->parent = (AstXmlParent *) this; - -/* Save the number of attributes currently stored in the element. */ - nattr = ( this->attrs ) ? this->nattr : 0; - -/* Search the existing attributes to see if an attribute with the given - name and prefix already exists. */ - oldi = -1; - for( i = 0; i < nattr; i++ ) { - oldattr = this->attrs[ i ]; - if( !strcmp( oldattr->name, attr->name ) ) { - if( !oldattr->prefix && !attr->prefix ) { - oldi = i; - break; - } else if( oldattr->prefix && attr->prefix && - !strcmp( oldattr->prefix, attr->prefix ) ){ - oldi = i; - break; - } - } - } - -/* If there is an existing attribute with the same name and prefix, - replace the old attribute with the new one created above. */ - if( oldi > -1 ){ - ((AstXmlObject *)oldattr)->parent = NULL; - oldattr = astXmlAnnul( oldattr ); - this->attrs[ oldi ] = attr; - -/* Otherwise, attempt to extend the array to hold an extra attribute. */ - } else { - this->attrs = astGrow( this->attrs, nattr + 1, - sizeof( AstXmlAttribute * ) ); - -/* Check all has gone OK. */ - if( astOK ) { - -/* Store the attribute pointer in the array of attribute pointers. */ - this->attrs[ nattr ] = attr; - -/* Increment the number of content items in this element */ - this->nattr = nattr + 1; - - } - } - } -} - -void astXmlAddCDataSection_( AstXmlElement *this, const char *text, int *status ){ -/* -*+ -* Name: -* astXmlAddCDataSection - -* Purpose: -* Create a new XmlCDataSection and add it to an XmlElement. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlAddCDataSection( AstXmlElement *this, const char *text ) - -* Description: -* This function creates a new XmlCDataSection structure representing -* an unparsed character data (CDATA) section, and adds it into an -* existing element. - -* Parameters: -* this -* A pointer to the element to be modified. -* text -* Pointer to a null terminated string containing the character data. - -*- -*/ - -/* Local Variables: */ - AstXmlCDataSection *new; /* Pointer to new structure */ - char *my_text; /* Cleaned text */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Allocate space for the new structure. */ - new = (AstXmlCDataSection *) astMalloc( sizeof( AstXmlCDataSection ) ); - -/* Clean the text. */ - my_text = CleanText( text, status ); - -/* Initialise it. */ - InitXmlCDataSection( new, AST__XMLCDATA, my_text, status ); - -/* Free the memory */ - my_text = astFree( my_text ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) { - new = astXmlDelete( new ); - -/* Otherwise, add the content item to the element. */ - } else { - AddContent( (AstXmlParent *) this, 0, (AstXmlContentItem *) new, status ); - } -} - -void astXmlAddCharData_( AstXmlParent *this, int where, const char *text, int *status ){ -/* -*+ -* Name: -* astXmlAddCharData - -* Purpose: -* Create a new XmlCharData and add it to an XmlElement or XmlDocument. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlAddCharData( AstXmlParent *this, int where, const char *text ) - -* Description: -* This function creates a new XmlCharData structure representing -* parsed character data, and adds it into an existing element or -* document. - -* Parameters: -* this -* Pointer to the element or document to be modified. -* where -* Ignored if "this" is an XmlElement pointer. Otherwise, "where" -* indicates where the item should be added to the document: -* 1 - In the prologue, after the XML declaration but before the DTD. -* 2 - In the prologue, after the DTD but before the root element. -* 3 - In the epilogue, after the root element. -* text -* Pointer to a null terminated string containing the character data. -* If "this" is a document, the text must consist entirely of white -* space. - -*- -*/ - -/* Local Variables: */ - AstXmlCharData *new; /* Pointer to the new structure */ - char *my_text; /* Pointer to cleaned text */ - char *c; /* Pointer to next character */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Initialise */ - new = NULL; - -/* Clean the text by replacing "\r\n" by "\n". */ - my_text = CleanText( text, status ); - -/* See if the text is all white. */ - c = my_text - 1; - while( *(++c) && isspace( *c ) ); - -/* If the string contains a non-white character, allocate memory for - a XmlBlack structure, and initialise it to hold the supplied text. - Otherwise, allocate memory for a XmlWhite structure, and initialise it - to hold the supplied text. */ - if( *c ) { - if( astXmlCheckType( this, AST__XMLDOC ) ) { - astError( AST__XMLCM, "astXmlAddCharData(xml): Illegal attempt " - "to add non-white character data to the prologue or " - "epilogue of an XML document: \"%s\".", status, my_text ); - } else { - new = (AstXmlCharData *) astMalloc( sizeof( AstXmlBlack ) ); - InitXmlBlack( (AstXmlBlack *) new, AST__XMLBLACK, my_text, status ); - } - - } else { - new = (AstXmlCharData *) astMalloc( sizeof( AstXmlWhite ) ); - InitXmlWhite( (AstXmlWhite *) new, AST__XMLWHITE, my_text, status ); - } - -/* Free the memory holding the cleaned text */ - my_text = astFree( my_text ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) { - new = astXmlDelete( new ); - -/* Otherwise, add the content item to the element. */ - } else { - AddContent( this, where, (AstXmlContentItem *) new, status ); - } -} - -void astXmlAddComment_( AstXmlParent *this, int where, const char *text, int *status ){ -/* -*+ -* Name: -* astXmlAddComment - -* Purpose: -* Create a new XmlComment and add it to an XmlElement or XmlDocument. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlAddComment( AstXmlParent *this, int where, const char *text ) - -* Description: -* This function creates a new XmlComment structure representing -* an XML comment, and adds it into an existing element or document. - -* Parameters: -* this -* Pointer to the element or document to be modified. -* where -* Ignored if "this" is an XmlElement pointer. Otherwise, "where" -* indicates where the item should be added to the document: -* 1 - In the prologue, after the XML declaration but before the DTD. -* 2 - In the prologue, after the DTD but before the root element. -* 3 - In the epilogue, after the root element. -* text -* Pointer to a null terminated string containing the comment text. - -*- -*/ - -/* Local Variables: */ - AstXmlComment *new; /* Pointer to the new structure */ - char *my_text; /* Cleaned text */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Allocate space for the new structure. */ - new = (AstXmlComment *) astMalloc( sizeof( AstXmlComment ) ); - -/* Clean the text. */ - my_text = CleanText( text, status ); - -/* Initialise it. */ - InitXmlComment( new, AST__XMLCOM, my_text, status ); - -/* Free the memory */ - my_text = astFree( my_text ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) { - new = astXmlDelete( new ); - -/* Otherwise, add the content item to the element. */ - } else { - AddContent( this, where, (AstXmlContentItem *) new, status ); - } - -} - -AstXmlElement *astXmlAddElement_( AstXmlElement *this, const char *name, - const char *prefix, int *status ){ -/* -*+ -* Name: -* astXmlAddElement - -* Purpose: -* Create a new empty XmlElement and adds it to an XmlElement. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* AstXmlElement *astXmlAddElement( AstXmlElement *this, const char *name, -* const char *prefix ) - -* Description: -* This function creates a new XmlElement structure representing an -* empty XML element with the given name and namespace prefix, and -* adds it into an existing element. - -* Parameters: -* this -* A pointer to the element to be modified. This may be NULL. -* name -* The name for the element. -* prefix -* The namespace prefix for the element. May be NULL or blank, in -* which case any prefix at the start of "name" is used. - -* Returned Value: -* A pointer to the new structure is returned. This pointer should be -* freed using astXmlAnnul when no longer needed. - -* Notes: -* - A NULL pointer is returned if the inherited status value -* indicates an error has occurred on entry, or if this function -* should fail for any reason. -*- -*/ - -/* Local Variables: */ - AstXmlElement *new; /* The returned pointer */ - -/* Initialise */ - new = NULL; - -/* Check the global error status. */ - if( !astOK ) return new; - -/* Allocate space for the new structure. */ - new = (AstXmlElement *) astMalloc( sizeof( AstXmlElement ) ); - -/* Initialise it. */ - InitXmlElement( new, AST__XMLELEM, name, prefix, status ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) { - new = astXmlDelete( new ); - -/* Otherwise, add the content item to the element. */ - } else { - AddContent( (AstXmlParent *) this, 0, (AstXmlContentItem *) new, status ); - } - -/* Return the result. */ - return new; - -} - -void astXmlAddPI_( AstXmlParent *this, int where, const char *target, const char *text, int *status ){ -/* -*+ -* Name: -* astXmlAddPI - -* Purpose: -* Create a new XmlPI and add it to an element or document. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlAddPI( AstXmlParent *this, int where, const char *target, -* const char *text ) - -* Description: -* This function creates a new XmlPI structure representing an -* XML "programming instruction", and adds it into an existing element -* or document. - -* Parameters: -* this -* Pointer to the element or document to be modified. This should -* be a pointer to an XmlElement or an XmlDocument. -* where -* Ignored if "this" is an XmlElement pointer. Otherwise, "where" -* indicates where the PI should be added to the document: -* 1 - In the prologue, after the XML declaration but before the DTD. -* 2 - In the prologue, after the DTD but before the root element. -* 3 - In the epilogue, after the root element. -* target -* Pointer to a null terminated string containing the PI target. -* text -* Pointer to a null terminated string containing the PI text. - -*- -*/ - -/* Local Variables: */ - AstXmlPI *new; /* Pointer to the new structure */ - char *my_text; /* Cleaned text */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Allocate space for the new structure. */ - new = (AstXmlPI *) astMalloc( sizeof( AstXmlPI ) ); - -/* Clean the text. */ - my_text = CleanText( text, status ); - -/* Initialise it. */ - InitXmlPI( new, AST__XMLPI, target, my_text, status ); - -/* Free the memory */ - my_text = astFree( my_text ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) { - new = astXmlDelete( new ); - -/* Otherwise, add the content item to the element. */ - } else { - AddContent( this, where, (AstXmlContentItem *) new, status ); - } -} - -void astXmlAddURI_( AstXmlElement *this, const char *prefix, const char *uri, int *status ){ -/* -*+ -* Name: -* astXmlAddURI - -* Purpose: -* Add a namespace prefix definition to an XmlElement, or change the -* default namespace. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlAddURI( AstXmlElement *this, const char *prefix, -* const char *uri ) - -* Description: -* This function adds a namespace prefix definition to a specified -* XmlElement, or changes the default namespace. If the suppliedprefix -* is already defined in the element, the associated URI is changed to -* the supplied URI. - -* Parameters: -* this -* The pointer to the element to be modified. -* prefix -* Pointer to a null terminated string containing the namespace -* prefix. If this is NULL or blank, then the supplied URI is used -* as the default namespace for this element and all child elements -* (except for child elements which define their own default -* namespace). -* uri -* Pointer to a null terminated string containing the namespace URI. -* If this is NULL or blank, and "prefix" is also NULL or blank, then -* this has the same effect of there being no default namespace within -* the supplied element. -*- -*/ - -/* Local Variables: */ - AstXmlNamespace *ns; /* The new namespace definition */ - AstXmlNamespace *oldns; /* The existing namespace definition */ - int i; /* Loop index */ - int nc; /* Length of namespace prefix */ - int nnspref; /* Number of namespace defintions in the element */ - int oldi; /* Index of existing attribute */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Initialise */ - oldns = NULL; - -/* Store the used length of the namespace prefix. */ - nc = prefix ? astChrLen( prefix ) : 0; - -/* If no namespace prefix has been supplied, just change the default - namespace URI. */ - if( !nc ) { - if( uri ) { - this->defns = astStore( this->defns, uri, strlen( uri ) + 1 ); - } else { - this->defns = astStore( this->defns, "", 1 ); - } - -/* Otherwise, add the namespace definition to the element. */ - } else { - -/* Create a new XmlNamespace. */ - ns = NewNamespace( prefix, uri, status ); - -/* If OK, indicate that the namespace is owned by the element. */ - if( astOK ) { - ( (AstXmlObject *) ns )->parent = (AstXmlParent *) this; - -/* Save the number of namespace definitions currently stored in the element. */ - nnspref = ( this->nsprefs ) ? this->nnspref : 0; - -/* Search the existing prefixes to see if a namespace with the given - prefix already exists. */ - oldi = -1; - for( i = 0; i < nnspref; i++ ) { - oldns = this->nsprefs[ i ]; - if( !strcmp( oldns->prefix, ns->prefix ) ) { - oldi = i; - break; - } - } - -/* If there is an existing namespace with the same prefix, replace the old - namespace with the new one created above. */ - if( oldi > -1 ){ - ((AstXmlObject *)oldns)->parent = NULL; - oldns = astXmlAnnul( oldns ); - this->nsprefs[ oldi ] = ns; - -/* Otherwise, attempt to extend the array to hold an extra namespace definition. */ - } else { - this->nsprefs = astGrow( this->nsprefs, nnspref + 1, - sizeof( AstXmlNamespace * ) ); - -/* Check all has gone OK. */ - if( astOK ) { - -/* Store the Namespace pointer in the array of Namespace pointers. */ - this->nsprefs[ nnspref ] = ns; - -/* Increment the number of namespaces in this element */ - this->nnspref = nnspref + 1; - } - } - } - } -} - -void *astXmlAnnul_( AstXmlObject *this, int *status ){ -/* -*+ -* Name: -* astXmlAnnul - -* Purpose: -* Free the resources used by an XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void *astXmlAnnul( AstXmlObject *this ) - -* Description: -* This function frees the resources used to hold the XmlObject, together -* with any child objects contained within the supplied XmlObject. A NULL -* pointer is always returned. If the supplied object is still in use -* (that is, if its parent XmlElement still exists) then the resources -* are not freed, and a copy of the supplied pointer is returned. - -* Parameters: -* this -* pointer to the XmlObject to be freed. - -* Returned Value: -* A NULL pointer, or the supplied pointer if the XmlObject is still -* in use. - -* Notes: -* - This function attempts to execute even if an error has already -* occurred. -*- -*/ - -/* Return if a NULL pointer has been suppplied. */ - if( !this ) return NULL; - -/* Return the supplied pointer if the objects parent still exists. */ - if( this->parent && - astXmlCheckType( this->parent, AST__XMLPAR ) ) return this; - -#ifdef DEBUG -/* Remove the supplied object from the list of currently active XmlObjects. */ - RemoveObjectFromList( this ); -#endif - -/* Clean the objects contents, and free the memory holding the XmlObject. */ - CleanXml( this, this->type, status ); - astFree( this ); - -/* Return a NULL pointer. */ - return NULL; -} - -void *astXmlAnnulTree_( AstXmlObject *this, int *status ){ -/* -*+ -* Name: -* astXmlAnnulTree - -* Purpose: -* Free the resources used by a tree of XmlObjects. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void *astXmlAnnulTree( AstXmlObject *this ) - -* Description: -* This function finds the head of the tree containing the supplied -* XmlObject (either an XmlElement or an XmlDocument), and frees the -* resources associated with all members of the tree. A NULL pointer -* is always returned. - -* Parameters: -* this -* Pointer to a member of the tree of XmlObjects to be freed. - -* Returned Value: -* A NULL pointer. - -* Notes: -* - This function attempts to execute even if an error has already -* occurred. -*- -*/ - -/* Return if a NULL pointer has been suppplied. */ - if( !this ) return NULL; - -/* Find the root and annull it. This will free all children (i.e. - the entire tree). */ - return astXmlAnnul( astXmlGetRoot( this ) ); -} - -AstXmlObject *astXmlCopy_( AstXmlObject *this, int *status ) { -/* -*+ -* Name: -* astXmlCopy - -* Purpose: -* Produce a deep copy of a supplied XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* AstXmlObject *astXmlCopy( AstXmlObject *this ) - -* Description: -* This function returns a pointer to a deep copy of the supplied -* XmlObject. - -* Parameters: -* this -* Pointer to the XmlObject to copy. - -* Returned Value: -* Pointer to the new copy. - -* Notes: -* - NULL is returned if NULL pointer is supplied. -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - - -/* Local Variables: */ - AstXmlAttribute *attr; - AstXmlBlack *black; - AstXmlCDataSection *cdata; - AstXmlComment *comm; - AstXmlDTDec *dtd; - AstXmlDeclPI *dec; - AstXmlDocument *doc, *newdoc; - AstXmlElement *elem, *newelem; - AstXmlNamespace *ns; - AstXmlObject *new; - AstXmlPI *pi; - AstXmlPrologue *pro, *newpro; - AstXmlWhite *white; - int i, type; - -/* Initialise */ - new = NULL; - -/* Check the global error status. */ - if( !astOK || !this ) return new; - -/* Initialise a new XmlObject of the required class, and copy any - sub-objects. */ - type = this->type; - if( type == AST__XMLELEM ){ - elem = (AstXmlElement *) this; - new = astMalloc( sizeof( AstXmlElement ) ); - InitXmlElement( (AstXmlElement *) new, AST__XMLELEM, - elem->name, elem->prefix, status ); - - newelem = (AstXmlElement *) new; - - newelem->attrs = astMalloc( sizeof( AstXmlAttribute *) * (size_t)elem->nattr ); - newelem->nattr = elem->nattr; - for( i = 0; i < elem->nattr; i++ ) { - newelem->attrs[ i ] = (AstXmlAttribute *) astXmlCopy( elem->attrs[ i ] ); - ((AstXmlObject *) newelem->attrs[ i ])->parent = (AstXmlParent *) newelem; - } - - newelem->items = astMalloc( sizeof( AstXmlContentItem *) * (size_t)elem->nitem ); - newelem->nitem = elem->nitem; - for( i = 0; i < elem->nitem; i++ ) { - newelem->items[ i ] = (AstXmlContentItem *) astXmlCopy( elem->items[ i ] ); - ((AstXmlObject *) newelem->items[ i ])->parent = (AstXmlParent *) newelem; - } - - newelem->nsprefs = astMalloc( sizeof( AstXmlNamespace *) * (size_t)elem->nnspref ); - newelem->nnspref = elem->nnspref; - for( i = 0; i < elem->nnspref; i++ ) { - newelem->nsprefs[ i ] = (AstXmlNamespace *) astXmlCopy( elem->nsprefs[ i ] ); - ((AstXmlObject *) newelem->nsprefs[ i ])->parent = (AstXmlParent *) newelem; - } - - if( elem->defns ) { - newelem->defns = astStore( NULL, elem->defns, - strlen( elem->defns ) + 1 ); - } - - newelem->complete = elem->complete; - - - } else if( type == AST__XMLATTR ){ - attr = (AstXmlAttribute *) this; - new = astMalloc( sizeof( AstXmlAttribute ) ); - InitXmlAttribute( (AstXmlAttribute *) new, AST__XMLATTR, - attr->name, attr->value, attr->prefix, status ); - - } else if( type == AST__XMLBLACK ){ - black = (AstXmlBlack *) this; - new = astMalloc( sizeof( AstXmlBlack ) ); - InitXmlBlack( (AstXmlBlack *) new, AST__XMLBLACK, - black->text, status ); - - } else if( type == AST__XMLWHITE ){ - white = (AstXmlWhite *) this; - new = astMalloc( sizeof( AstXmlWhite ) ); - InitXmlWhite( (AstXmlWhite *) new, AST__XMLWHITE, - white->text, status ); - - } else if( type == AST__XMLCDATA ){ - cdata = (AstXmlCDataSection *) this; - new = astMalloc( sizeof( AstXmlCDataSection ) ); - InitXmlCDataSection( (AstXmlCDataSection *) new, AST__XMLCDATA, - cdata->text, status ); - - } else if( type == AST__XMLCOM ){ - comm = (AstXmlComment *) this; - new = astMalloc( sizeof( AstXmlComment ) ); - InitXmlComment( (AstXmlComment *) new, AST__XMLCOM, - comm->text, status ); - - } else if( type == AST__XMLPI ){ - pi = (AstXmlPI *) this; - new = astMalloc( sizeof( AstXmlPI ) ); - InitXmlPI( (AstXmlPI *) new, AST__XMLPI, pi->target, pi->text, status ); - - } else if( type == AST__XMLNAME ){ - ns = (AstXmlNamespace *) this; - new = astMalloc( sizeof( AstXmlNamespace ) ); - InitXmlNamespace( (AstXmlNamespace *) new, AST__XMLNAME, ns->prefix, - ns->uri, status ); - - } else if( type == AST__XMLDOC ){ - doc = (AstXmlDocument *) this; - new = astMalloc( sizeof( AstXmlDocument ) ); - InitXmlDocument( (AstXmlDocument *) new, AST__XMLDOC, status ); - - newdoc = (AstXmlDocument *) new; - - if( doc->prolog ) { - newdoc->prolog = (AstXmlPrologue *) astXmlCopy( doc->prolog ); - ((AstXmlObject *) newdoc->prolog)->parent = (AstXmlParent *) newdoc; - } - - if( doc->root ) { - newdoc->root = (AstXmlElement *) astXmlCopy( doc->root ); - ((AstXmlObject *) newdoc->root)->parent = (AstXmlParent *) newdoc; - } - - newdoc->epilog = astMalloc( sizeof( AstXmlMiscItem *) * (size_t)doc->nepi ); - newdoc->nepi = doc->nepi; - for( i = 0; i < doc->nepi; i++ ) { - newdoc->epilog[ i ] = (AstXmlMiscItem *) astXmlCopy( doc->epilog[ i ] ); - ((AstXmlObject *) newdoc->epilog[ i ])->parent = (AstXmlParent *) newdoc; - } - - newdoc->current = NULL; - - } else if( type == AST__XMLPRO ){ - pro = (AstXmlPrologue *) this; - new = astMalloc( sizeof( AstXmlPrologue ) ); - InitXmlPrologue( (AstXmlPrologue *) new, AST__XMLPRO, status ); - - newpro = (AstXmlPrologue *) new; - - if( pro->xmldecl ) { - newpro->xmldecl = (AstXmlDeclPI *) astXmlCopy( pro->xmldecl ); - ((AstXmlObject *) newpro->xmldecl)->parent = (AstXmlParent *) newpro; - } - - if( pro->dtdec ) { - newpro->dtdec = (AstXmlDTDec *) astXmlCopy( pro->dtdec ); - ((AstXmlObject *) newpro->dtdec)->parent = (AstXmlParent *) newpro; - } - - newpro->misc1 = astMalloc( sizeof( AstXmlMiscItem *) * (size_t)pro->nmisc1 ); - newpro->nmisc1 = pro->nmisc1; - for( i = 0; i < pro->nmisc1; i++ ) { - newpro->misc1[ i ] = (AstXmlMiscItem *) astXmlCopy( pro->misc1[ i ] ); - ((AstXmlObject *) newpro->misc1[ i ])->parent = (AstXmlParent *) newpro; - } - - newpro->misc2 = astMalloc( sizeof( AstXmlMiscItem *) * (size_t)pro->nmisc2 ); - newpro->nmisc2 = pro->nmisc2; - for( i = 0; i < pro->nmisc2; i++ ) { - newpro->misc2[ i ] = (AstXmlMiscItem *) astXmlCopy( pro->misc2[ i ] ); - ((AstXmlObject *) newpro->misc2[ i ])->parent = (AstXmlParent *) newpro; - } - - } else if( type == AST__XMLDEC ){ - dec = (AstXmlDeclPI *) this; - new = astMalloc( sizeof( AstXmlDeclPI ) ); - InitXmlDeclPI( (AstXmlDeclPI *) new, AST__XMLDEC, dec->text, status ); - - } else if( type == AST__XMLDTD ){ - dtd = (AstXmlDTDec *) this; - new = astMalloc( sizeof( AstXmlDTDec ) ); - InitXmlDTDec( (AstXmlDTDec *) new, AST__XMLDTD, dtd->name, - dtd->external, dtd->internal, status ); - - } else if( astOK ) { - astError( AST__INTER, "CopyXml: Invalid object type (%d) supplied " - "(internal AST programming error).", status, type ); - } - -/* If an error occurred, delete the new structure. */ - if( !astOK ) new = astXmlDelete( new ); - -/* Return the result. */ - return new; -} - -const char *astXmlFormat_( AstXmlObject *this, int *status ) { -/* -*+ -* Name: -* astXmlFormat - -* Purpose: -* Converts an XmlObject into a character string. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* const char *astXmlFormat( AstXmlObject *this ) - -* Description: -* This function returns a pointer to a dynamically allocated string -* containing a textual representation of the supplied XmlObject. - -* Parameters: -* this -* Pointer to the XmlObject to format. - -* Returned Value: -* Pointer to a null terminated string holding the formated XmlObject. -* This string should be freed when no longer needed using astFree. - -* Notes: -* - No newlines or indentation strings are added to the returned string. -* - NULL is returned if NULL pointer is supplied. -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - return Format( this, -1, status ); -} - -const char *astXmlGetAttributeValue_( AstXmlElement *this, const char *name, int *status ){ -/* -*+ -* Name: -* astXmlGetAttributeValue - -* Purpose: -* Return a pointer to a string holding the value of a named attribute. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* const char *astXmlGetAttributeValue( AstXmlElement *this, const char *name ) - -* Description: -* This function returns a pointer to a constant string holding the -* value of a named attribute of a supplied element. If the element -* does not have the named attribute, a NULL pointer is returned but -* no error is reported. - -* Parameters: -* this -* The pointer to the XmlElement. -* name -* Pointer to a string holding the name of the attribute. The name -* may be preceded with a "prefix:" string, in which case the -* prefix will also be matched. If no prefix is included, the first -* attribute with the specified name is returned, regardless of -* its prefix. - -* Returned Value: -* Pointer to a string holding the value of the attribute within the -* supplied element, or NULL if the attribute was not found. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Local Variables: */ - const char *result; /* Returned pointer */ - AstXmlAttribute *attr; /* Pointer to the attribute */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* Find the attribute. */ - attr = FindAttribute( this, name, status ); - -/* Get its value. */ - if( attr ) result = attr->value; - -/* Return the result. */ - return result; -} - -AstXmlContentItem *astXmlGetItem_( AstXmlElement *this, int item, int *status ){ -/* -*+ -* Name: -* astXmlGetItem - -* Purpose: -* Return a specified item of the content of an element. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* AstXmlContentItem *astXmlGetItem( AstXmlElement *this, int item ) - -* Description: -* This function returns a pointer to an item of the content of the -* specified element. - -* Parameters: -* this -* The pointer to the XmlElement. -* item -* The index of the required item, in the range zero to "nitem-1", -* where "nitem" is the number of items in the element as returned -* by astXmlGetNitem. An error is reported if the specified index -* is out of bounds. - -* Returned Value: -* A pointer to the requested item. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Local Variables: */ - AstXmlContentItem *result; /* The returned pointer */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* Report an error if the supplie dindex is bad. */ - if( this->nitem == 0 ) { - astError( AST__XMLIT, "astXmlGetItem(xml): The supplied item index (%d) " - "is out of bounds. The supplied XmlObject has no content.", status, - item ); - - } else if( item < 0 || item >= this->nitem ) { - astError( AST__XMLIT, "astXmlGetItem(xml): The supplied item index (%d) " - "is out of bounds. Should be in the range 0 to %d.", status, - item, this->nitem-1 ); - } else { - result = this->items[ item ]; - } - -/* Return the result. */ - return result; -} - -const char *astXmlGetName_( AstXmlObject *this, int *status ){ -/* -*+ -* Name: -* astXmlGetName - -* Purpose: -* Return a pointer to a string holding the name of an XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* const char *astXmlGetName( AstXmlObject *this ) - -* Description: -* This function returns a pointer to a constant string holding the -* name associated with an XmlObject. For elements and attributes, the -* "name" value is returned. For PI elements, the "target" value is -* returned. For namespace definitions, the "prefix" value is returned. -* An error is reported if the supplied XmlObject is of any other class. - -* Parameters: -* this -* The pointer to the XmlObject. - -* Returned Value: -* Pointer to the name string within the XML object. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Local Variables: */ - const char *result; /* Returned pointer */ - int type; /* Object type */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* Return the relevant component of the structure, depending on its type. */ - type = this->type; - if( type == AST__XMLELEM ){ - result = ( (AstXmlElement *) this )->name; - - } else if( type == AST__XMLATTR ){ - result = ( (AstXmlAttribute *) this )->name; - - } else if( type == AST__XMLPI ){ - result = ( (AstXmlPI *) this )->target; - - } else if( type == AST__XMLNAME ){ - result = ( (AstXmlNamespace *) this )->prefix; - - } else { - astError( AST__INTER, "astXmlGetName: Inappropriate object type (%d) supplied " - "(internal AST programming error).", status, type ); - } - -/* Return the result. */ - return result; -} - -int astXmlGetNattr_( AstXmlElement *this, int *status ){ -/* -*+ -* Name: -* astXmlGetNattr - -* Purpose: -* Return the number of attributes held by an element. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* int astXmlGetNattr( AstXmlElement *this ) - -* Description: -* This function returns the number of attributes held by an element. - -* Parameters: -* this -* The pointer to the XmlElement. - -* Returned Value: -* The number of attributes held by the supplied element. - -* Notes: -* - Zero is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Check the global error status. */ - if( !astOK ) return 0; - -/* Return the result. */ - return ( this->attrs ) ? this->nattr : 0; -} - -int astXmlGetNitem_( AstXmlElement *this, int *status ){ -/* -*+ -* Name: -* astXmlGetNitem - -* Purpose: -* Return the number of items within the content of an element. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* int astXmlGetNitem( AstXmlElement *this ) - -* Description: -* This function returns the number of items within the content of an -* XmlElement. - -* Parameters: -* this -* The pointer to the XmlElement. - -* Returned Value: -* The number of items in the content of the supplied element. - -* Notes: -* - Zero is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Check the global error status. */ - if( !astOK ) return 0; - -/* Return the result. */ - return this->nitem; -} - -AstXmlParent *astXmlGetParent_( AstXmlObject *this, int *status ){ -/* -*+ -* Name: -* astXmlGetParent - -* Purpose: -* Return a pointer to the object which contains the supplied XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* AstXmlParent *astXmlGetParent( AstXmlObject *this ) - -* Description: -* This function returns a pointer to the XmlParent object (either an -* XmlElement or an XmlDocument) which contains the specified XmlObject. -* The object can be a content item (an element, a comment, a CDATA -* section, a PI, or character data) in which case the enclosing -* XmlElement is returned, or an attribute or namespace definition in -* which case the XmlElement to which object refers is returned. -* If "this" is the root element of a document, a pointer to the -* XmlDocument is returned. - - -* Parameters: -* this -* The pointer to check. - -* Returned Value: -* Pointer to the parent, or NULL if the object does not have a parent. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Check the global error status. */ - if( !astOK ) return NULL; - -/* Return the result. */ - return this->parent; -} - -AstXmlObject *astXmlGetRoot_( AstXmlObject *this, int *status ){ -/* -*+ -* Name: -* astXmlGetRoot - -* Purpose: -* Return a pointer to the root XmlObject which contains the supplied -* XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* AstXmlObject *astXmlGetRoot( AstXmlObject *this ) - -* Description: -* This function returns a pointer to the XmlObject which is the root of -* the tree containing the specified XmlObject. A pointer to the -* supplied XmlObject is returned if it has no parent. - -* Parameters: -* this -* The pointer to check. - -* Returned Value: -* Pointer to the root XmlObject, or a copy of the supplied pointer if -* the supplied XmlObject is the root. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Local Variables: */ - AstXmlObject *result; - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* If "this" is a document, check it has no parent. If not, return a - pointer ot it. */ - if( astXmlCheckType( this, AST__XMLDOC ) ) { - if( this->parent ) { - astError( AST__INTER, "astXmlGetRoot(xml): An XmlDocument has a " - "non-null parent of type %ld (internal AST programming " - "error).", status, this->type ); - } else { - result = (AstXmlObject *) this; - } - -/* Otherwise... */ - } else if( this->parent ) { - result = astXmlGetRoot( this->parent ); - - } else { - result = this; - } - -/* Return the result. */ - return result; -} - -const char *astXmlGetTag_( AstXmlObject *this, int opening, int *status ){ -/* -*+ -* Name: -* astXmlGetTag - -* Purpose: -* Returns a string holding an XML tag describing the given XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* const char *astXmlGetTag( AstXmlObject *this, int opening ) - -* Description: -* This function returns a pointer to a static string containing an -* XML tag describing the given XmlObject. - -* Parameters: -* this -* Pointer to the XmlObject. -* opening -* Indicates which tag is to be returned; the start tag or the end -* tag. If non-zero the start tag is returned. Otherwise, the -* end tag is returned. If the supplied XmlObject has no end -* tag (i.e. if it is an empty element, or if it is not an element), -* then NULL is returned but no error is reported. - -* Returned Value: -* Pointer to a null terminated string holding the tag. If the tag -* exceeds 200 characters, only the first 197 characters are returned -* and "..." is appended to the end. - -* Notes: -* - Subsequent invocations of this function will over-write the -* buffer which used to hold the returned string. -* - Empty elements are represented as an start tag of the form <.../>, -* with no corresponding end tag. -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Local Variables: */ - astDECLARE_GLOBALS /* Pointer to thread-specific global data */ - char *result; /* The returned pointer */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* If needed, get a pointer to the thread specific global data structure. */ - astGET_GLOBALS(NULL); - -/* Get a dynamic string holding the formatted tag. */ - result = FormatTag( this, opening, status ); - -/* If OK, copy the result into the static buffer. */ - gettag_buff[ 0 ] = 0; - if( result ) { - if( astOK ) { - - if( strlen( result ) > AST__XML_GETTAG_BUFF_LEN ) { - strncpy( gettag_buff, result, AST__XML_GETTAG_BUFF_LEN -3 ); - strcpy( gettag_buff + AST__XML_GETTAG_BUFF_LEN - 3, "..." ); - } else { - strncpy( gettag_buff, result, AST__XML_GETTAG_BUFF_LEN ); - } - - gettag_buff[ AST__XML_GETTAG_BUFF_LEN ] = 0; - astFree( result ); - result = gettag_buff; - } else { - result = astFree( result ); - } - } - -/* Return the result. */ - return result; -} - -const char *astXmlGetType_( AstXmlObject *this, int *status ){ -/* -*+ -* Name: -* astXmlGetType - -* Purpose: -* Returns a string holding the type of the given XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* const char *astXmlGetType( AstXmlObject *this ) - -* Description: -* This function returns a pointer to a static string containing the -* type of the given XmlObject. - -* Parameters: -* this -* Pointer to the XmlObject. - -* Returned Value: -* Pointer to a null terminated string holding the type string. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Local Variables: */ - const char *result; /* The returned pointer */ - int type; /* Element type */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - - type = this->type; - if( type == AST__XMLELEM ) { - result = "element"; - - } else if( type == AST__XMLATTR ) { - result = "attribute"; - - } else if( type == AST__XMLCDATA ) { - result = "CDATA section"; - - } else if( type == AST__XMLCOM ) { - result = "comment"; - - } else if( type == AST__XMLPI ) { - result = "processing instruction"; - - } else if( type == AST__XMLNAME ) { - result = "namespace"; - - } else if( type == AST__XMLDOC ) { - result = "document"; - - } else if( type == AST__XMLPRO ) { - result = "prologue"; - - } else if( type == AST__XMLDEC ) { - result = "XML delaration PI"; - - } else if( type == AST__XMLDTD ) { - result = "DTD"; - - } else if( type == AST__XMLWHITE ) { - result = "white-space character data "; - - } else if( type == AST__XMLBLACK ) { - result = "non-blank character data"; - - } else { - result = "unknown XML object"; - } - -/* Return the result. */ - return result; -} - -const char *astXmlGetURI_( AstXmlObject *this, int *status ){ -/* -*+ -* Name: -* astXmlGetURI - -* Purpose: -* Return a pointer to a string holding the namespace URI of an XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* const char *astXmlGetURI( AstXmlObject *this ) - -* Description: -* This function returns a pointer to a constant string holding the -* namespace URI associated with an XmlObject. Only attributes, -* elements and namespaces have associated URIs, so a NULL pointer is -* returned for any other class of XmlObject. A NULL pointer is also -* returned if XmlObject does not belong to any namespace, or if it -* belongs to a unknown namespace (i.e. one for which no URI is -* available). Any namespace prefix attached to the supplied object is -* resolved first using any "xmlns" attributes contained in the same -* element, then using any "xmlns" attributes contained in the parent -* element, etc. - -* Parameters: -* this -* The pointer to the XmlObject. - -* Returned Value: -* Pointer to a string holding the namespace URI, or NULL. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Local Variables: */ - const char *prefix; /* Namespace prefix */ - const char *result; /* Returned pointer */ - int type; /* Object type */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* Do each type of object separately. */ - type = this->type; - if( type == AST__XMLATTR ){ - prefix = ( (AstXmlAttribute *) this )->prefix; - -/* Attributes have no default name space. Therefore if there is no prefix, - return NULL. If there is a prefix, resolve it within the context of - the attributes parent element. */ - if( prefix ) { - result = ResolvePrefix( prefix, (AstXmlElement *) this->parent, status ); - } - - } else if( type == AST__XMLELEM ){ - prefix = ( (AstXmlElement *) this )->prefix; - -/* If there is a prefix, resolve it within the context of this element. */ - if( prefix ) { - result = ResolvePrefix( prefix, (AstXmlElement *) this, status ); - -/* Elements do have a default name space. Therefore if there is no prefix, - return the default name space within the context of this element. */ - } else { - result = DefaultURI( (AstXmlElement *) this, status ); - } - -/* If the supplied object is a namespace, just return the associated URI. */ - } else if( type == AST__XMLNAME ){ - result = ( (AstXmlNamespace *) this )->uri; - - } - -/* Return the result. */ - return result; -} - -const char *astXmlGetValue_( AstXmlObject *this, int report, int *status ){ -/* -*+ -* Name: -* astXmlGetValue - -* Purpose: -* Return a pointer to a string holding the value of an XmlObject. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* const char *astXmlGetValue( AstXmlObject *this, int report ) - -* Description: -* This function returns a pointer to a constant string holding the -* value associated with an XmlObject. For attributes, the attribute value -* is returned. For PI elements, the "text" value is returned. For -* namespace definitions, the "URI" value is returned. For character -* data, the character data is returned. For CDATA sections the "text" -* value is returned. For comments, the "text" value is returned. -* If the XmlObject is an element, then a non-NULL value is returned -* only if the element contains a single content item holding character -* data. In this case a pointer to the character data is returned. -* A null value is returned in all other cases (but no error is -* reported unless "report" is non-zero). - -* Parameters: -* this -* The pointer to the XmlObject. -* report -* Report an error if the supplied XmlObject does not have a value? - -* Returned Value: -* Pointer to a string holding the value of the XML object. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - -/* Local Variables: */ - AstXmlContentItem *item;/* Element content */ - const char *result; /* Returned pointer */ - int type; /* Object type */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* Return the relevant component of the structure, depending on its type. */ - type = this->type; - if( type == AST__XMLATTR ){ - result = ( (AstXmlAttribute *) this )->value; - - } else if( type == AST__XMLBLACK ){ - result = ( (AstXmlBlack *) this )->text; - - } else if( type == AST__XMLWHITE ){ - result = ( (AstXmlWhite *) this )->text; - - } else if( type == AST__XMLCDATA ){ - result = ( (AstXmlCDataSection *) this )->text; - - } else if( type == AST__XMLCOM ){ - result = ( (AstXmlComment *) this )->text; - - } else if( type == AST__XMLPI ){ - result = ( (AstXmlPI *) this )->text; - - } else if( type == AST__XMLNAME ){ - result = ( (AstXmlNamespace *) this )->uri; - - } else if( type == AST__XMLELEM ){ - if( astXmlGetNitem( (AstXmlElement *) this ) == 1 ) { - item = astXmlGetItem( (AstXmlElement *) this, 0 ); - if( astXmlCheckType( item, AST__XMLCHAR ) ) { - result = astXmlGetValue( item, report ); - } - } - - if( !result && astOK && report ) { - astError( AST__BADIN, "astRead(xml): Cannot get the value of " - "element \"<%s>\": its contents are not pure character " - "data.", status, astXmlGetName( this ) ); - } - - } else if( report ) { - astError( AST__INTER, "astXmlGetValue(xml): Cannot get the value of " - "an XmlObject of type %d (internal AST programming " - "error).", status, type ); - } - -/* Return the result. */ - return result; -} - -void astXmlInsertElement_( AstXmlElement *this, AstXmlElement *elem, int *status ){ -/* -*+ -* Name: -* astXmlInsertElement - -* Purpose: -* Inserts an existing XmlElement into another XmlElement. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlInsertElement( AstXmlElement *this, AstXmlElement *elem ) - -* Description: -* This function inserts a given XmlElement "elem" into another given -* XmlElement "this". An error is reported if "elem" already has a -* parent. - -* Parameters: -* this -* A pointer to the element to be modified. -* elem -* The element to be inserted into "this". - -*- -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Report AN error if "elem" has already been inserted into - another element. */ - if( ((AstXmlObject *) elem)->parent ) { - astError( AST__INTER, "astXmlInsertElement(xml): Cannot insert \"%s\" " - "into \"%s\" because it already has a parent (\"%s\") " - "(internal AST programming error).", status, - astXmlGetTag( elem, 1 ), astXmlGetTag( this, 1 ), - astXmlGetTag( ((AstXmlObject *) elem)->parent, 1 ) ); - -/* Otherwise, add the content item to the element. */ - } else { - AddContent( (AstXmlParent *) this, 0, (AstXmlContentItem *) elem, status ); - } -} - -void astXmlPurge_( AstXmlParent *this, int *status ) { -/* -*+ -* Name: -* astXmlPurge - -* Purpose: -* Remove blank content from a parent object. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlPurge( AstXmlParent *this ) - -* Description: -* This function removes all character data containing only whitespace -* from the supplied document or element. It is recursive, in that it also -* removes white space from all children elements. - -* Parameters: -* this -* Pointer to the document or element. - -*- -*/ - -/* Local Variables: */ - int i; /* Content item index */ - AstXmlContentItem *item; /* Next content item */ - AstXmlMiscItem *misc; /* Nest miscalleneous item */ - AstXmlDocument *doc; /* This document */ - AstXmlPrologue *pro; /* This document prologue */ - AstXmlElement *elem; /* This element */ - -/* Check the global error status. */ - if( !astOK || !this ) return; - -/* If this is a a document.. */ - if( astXmlCheckType( this, AST__XMLDOC ) ) { - doc = (AstXmlDocument *) this; - astXmlPurge( doc->prolog ); - astXmlPurge( doc->root ); - - i = -1; - while( ++i < doc->nepi ) { - misc = doc->epilog[ i ]; - if( astXmlCheckType( misc, AST__XMLWHITE ) ) { - misc = astXmlDelete( misc ); - i--; - } - } - -/* If this is a prologue.. */ - } else if( astXmlCheckType( this, AST__XMLPRO ) ) { - pro = (AstXmlPrologue *) this; - - i = -1; - while( ++i < pro->nmisc1 ) { - misc = pro->misc1[ i ]; - if( astXmlCheckType( misc, AST__XMLWHITE ) ) { - misc = astXmlDelete( misc ); - i--; - } - } - - i = -1; - while( ++i < pro->nmisc2 ) { - misc = pro->misc2[ i ]; - if( astXmlCheckType( misc, AST__XMLWHITE ) ) { - misc = astXmlDelete( misc ); - i--; - } - } - - -/* If this is an element */ - } else if( astXmlCheckType( this, AST__XMLELEM ) ) { - elem = (AstXmlElement *) this; - - i = -1; - while( ++i < elem->nitem ) { - item = elem->items[ i ]; - - if( astXmlCheckType( item, AST__XMLWHITE ) ) { - item = astXmlDelete( item ); - i--; - - } else if( astXmlCheckType( item, AST__XMLELEM ) ) { - astXmlPurge( (AstXmlParent *) item ); - } - } - } -} - -void astXmlRemoveAttr_( AstXmlElement *this, const char *name, - const char *prefix, int *status ){ -/* -*+ -* Name: -* astXmlRemoveAttr - -* Purpose: -* Removes an attribute from its parent element. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlRemoveAttr( AstXmlElement *this, const char *name, -* const char *prefix ) - -* Description: -* This function removes a named attribute from its parent element. - -* Parameters: -* this -* The pointer to the element containing the attribute to be removed. -* name -* Pointer to a null terminated string containing the attribute name. -* prefix -* The namespace prefix for the attribute. May be NULL or blank, in -* which case any prefix at the start of "name" is used. -*- -*/ - -/* Local Variables: */ - AstXmlAttribute *attr; /* Pointer to temporary attribute structure */ - AstXmlAttribute *oldattr; /* Pointer to existing attribute */ - int i; /* Attribute index */ - int nattr; /* Number of attributes in parent */ - int oldi; /* Indexof existing attribute */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Initialise */ - oldattr = NULL; - -/* Create a new XmlAttribute with blank value. */ - attr = NewAttribute( name, "", prefix, status ); - if( astOK ) { - -/* Get the number of attributes currently stored in the element. */ - nattr = ( this->attrs ) ? this->nattr : 0; - -/* Search the existing attributes to see if an attribute with the given - name and prefix already exists. */ - oldi = -1; - for( i = 0; i < nattr; i++ ) { - oldattr = this->attrs[ i ]; - if( !strcmp( oldattr->name, attr->name ) ) { - if( !oldattr->prefix && !attr->prefix ) { - oldi = i; - break; - } else if( oldattr->prefix && attr->prefix && - !strcmp( oldattr->prefix, attr->prefix ) ){ - oldi = i; - break; - } - } - } - -/* If there is an existing attribute with the same name and prefix, - delete it. */ - if( oldi > -1 ) astXmlDelete( oldattr ); - -/* Delete the temporary attribute structure. */ - attr = astXmlDelete( attr ); - - } -} - -void astXmlRemoveItem_( AstXmlContentItem *this, int *status ){ -/* -*+ -* Name: -* astXmlRemoveItem - -* Purpose: -* Removes an item of content from its parent element or document. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlRemoveItem( AstXmlContentItem *this ) - -* Description: -* This function removes an item of content from its parent element, -* or removes the root element from a document. The removed item is not -* annulled and may be subsequently added into another element. - -* Parameters: -* this -* The pointer to the item to be removed form its parent. -*- -*/ - -/* Local Variables: */ - AstXmlDocument *doc; /* Pointer to parent document */ - AstXmlElement *elem; /* Pointer to parent element */ - AstXmlParent *parent; /* Pointer to parent */ - int found; /* Was the item found within its parent? */ - int i; /* Item index */ - int j; /* Item index */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Get a pointer to the items parent element, and check it is not null. */ - parent = ( (AstXmlObject *) this )->parent; - if( parent && astXmlCheckType( parent, AST__XMLELEM ) ) { - elem = (AstXmlElement *) parent; - -/* Search through all the items within the parent element looking for the - supplied item. */ - found = 0; - for( i = 0; i < elem->nitem; i++ ) { - if( elem->items[ i ] == this ) { - -/* When found, decrement the number of items in the element, and shuffle - all the remaining item pointers down one slot to over-write it, then - nullify the parent pointer in the supplied object and leave the loop. */ - (elem->nitem)--; - for( j = i; j < elem->nitem; j++ ) { - elem->items[ j ] = elem->items[ j + 1 ]; - } - ( (AstXmlObject *) this )->parent = NULL; - found = 1; - break; - } - } - -/* Report an error if the item was not found. */ - if( !found ) { - astError( AST__INTER, "astXmlRemoveItem: The parent of the supplied " - "item does not contain the item (internal AST programming " - "error)." , status); - } - -/* If the parent is an XmlDocument, check the item being removed is the - root element. */ - } else if( parent && astXmlCheckType( parent, AST__XMLDOC ) ) { - doc = (AstXmlDocument *) parent; - if( (AstXmlElement *) this == doc->root ) { - ( (AstXmlObject *) this )->parent = NULL; - doc->root = NULL; - } - } -} - -void astXmlRemoveURI_( AstXmlElement *this, const char *prefix, int *status ){ -/* -*+ -* Name: -* astXmlRemoveURI - -* Purpose: -* Removes an namespace prefix from its parent element. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlRemoveURI( AstXmlElement *this, const char *prefix ) - -* Description: -* This function removes a named namespace prefix from its parent element. - -* Parameters: -* this -* The pointer to the element containing the namespace prefix to be -* removed. -* prefix -* The namespace prefix to remove. -*- -*/ - -/* Local Variables: */ - AstXmlNamespace *ns; /* Temporary namespace structure */ - AstXmlNamespace *oldns; /* Pointer to existing namespace */ - int oldi; /* Index of namespace within its parent */ - int i; /* Namespace index */ - int nns; /* Number of existing namespaces */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Initialise */ - oldns = NULL; - -/* Create a new XmlNamespace with blank URI. */ - ns = NewNamespace( prefix, "", status ); - if( astOK ) { - -/* Get the number of namespace prefixes currently stored in the element. */ - nns = ( this->nsprefs ) ? this->nnspref : 0; - -/* Search the list of existing namespace prefixes to see if the given prefix - is included. */ - oldi = -1; - for( i = 0; i < nns; i++ ) { - oldns = this->nsprefs[ i ]; - if( !strcmp( oldns->prefix, ns->prefix ) ){ - oldi = i; - break; - } - } - -/* If the supplied namespace prefix was found in the list, delete it. */ - if( oldi > -1 ) astXmlDelete( oldns ); - -/* Delete the temporary namespace structure. */ - ns = astXmlDelete( ns ); - - } -} - -void astXmlSetDTDec_( AstXmlDocument *this, const char *text1, - const char *text2, const char *text3, int *status ){ -/* -*+ -* Name: -* astXmlSetDTDec - -* Purpose: -* Set the Document Type declaration for a document. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlSetDTDEC( AstXmlDocument *this, const char *text1, -* const char *text2, const char *text3 ) - -* Description: -* This function stores an Document Type declaration of the form -* -* <!DOCTYPE text1 text2 [text3]> -* -* in the supplied document. Any previous DTD is removed. - -* Parameters: -* this -* The pointer to the document. -* text1 -* The document type name. -* text2 -* The text defining the external elements of the document type -* (may be NULL). -* text3 -* The text defining the internal elements of the document type -* (may be NULL). Do not include delimiting "[" and "]" characters. -*- -*/ - -/* Local Variables: */ - AstXmlDTDec *new; /* Pointer to new DT declaration */ - AstXmlPrologue *pro; /* Pointer to prologue */ - char *my_text2; /* Cleaned text2 */ - char *my_text3; /* Cleaned text3 */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Allocate space for the new structure. */ - new = (AstXmlDTDec *) astMalloc( sizeof( AstXmlDTDec ) ); - -/* Clean the text. */ - my_text2 = CleanText( text2, status ); - my_text3 = CleanText( text3, status ); - -/* Initialise it. */ - InitXmlDTDec( new, AST__XMLDTD, text1, my_text2, my_text3, status ); - -/* Free the memory */ - my_text2 = astFree( my_text2 ); - my_text3 = astFree( my_text3 ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) { - new = astXmlDelete( new ); - -/* Otherwise, store it in the document, deleting any existing declaration - first. */ - } else { - -/* Create a prologue if necessary. */ - if( !this->prolog ) this->prolog = NewPrologue( this, status ); - - pro = this->prolog; - if( pro->dtdec ) astXmlDelete( pro->dtdec ); - pro->dtdec = new; - } -} - -void astXmlSetXmlDec_( AstXmlDocument *this, const char *text, int *status ){ -/* -*+ -* Name: -* astXmlSetXmlDec - -* Purpose: -* Set the XML declaration for a document. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void astXmlSetXmlDec( AstXmlDocument *this, const char *text ) - -* Description: -* This function stores an XML declaration of the form -* -* <?xml [text]?> -* -* in the supplied document. Any previous XML declaration is removed. - -* Parameters: -* this -* The pointer to the document. -* text -* The text to include in the XML declaration tag. -*- -*/ - -/* Local Variables: */ - AstXmlDeclPI *new; /* Pointer to new XML delcaration */ - AstXmlPrologue *pro; /* Pointer to prologue */ - char *my_text; /* Cleaned text */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Allocate space for the new structure. */ - new = (AstXmlDeclPI *) astMalloc( sizeof( AstXmlDeclPI ) ); - -/* Clean the text. */ - my_text = CleanText( text, status ); - -/* Initialise it. */ - InitXmlDeclPI( new, AST__XMLDEC, my_text, status ); - -/* Free the memory */ - my_text = astFree( my_text ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) { - new = astXmlDelete( new ); - -/* Otherwise, store it in the document, deleting any existing declaration - first. */ - } else { - -/* Create a prologue if necessary. */ - if( !this->prolog ) this->prolog = NewPrologue( this, status ); - - pro = this->prolog; - if( pro->xmldecl ) astXmlDelete( pro->xmldecl ); - pro->xmldecl = new; - } -} - -const char *astXmlShow_( AstXmlObject *this, int *status ) { -/* -*+ -* Name: -* astXmlShow - -* Purpose: -* Converts an XmlObject into a character string with indentation. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* const char *astXmlShow( AstXmlObject *this ) - -* Description: -* This function returns a pointer to a dynamically allocated string -* containing a textual representation of the supplied XmlObject. -* Newline characters are added to the string if needed to ensure that -* each item of content within an element starts on a new line, and all -* tags are preceded by an indentation string consisting of a number -* of spaces. - -* Parameters: -* this -* Pointer to the XmlObject to format. - -* Returned Value: -* Pointer to a null terminated string holding the formated XmlObject. -* This string should be freed when no longer needed using astFree. - -* Notes: -* - NULL is returned if a NULL pointer is supplied. -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - return Format( this, 0, status ); -} - -static void CheckName( const char *name, const char *noun, const char *method, - int nullok, int *status ){ -/* -* Name: -* CheckName - -* Purpose: -* Checks the supplied string is a valid XML name. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* void CheckName( const char *name, const char *noun, const char *method, -* int nullok, int *status ) - -* Description: -* This function checks that the supplied string is a valid XML name, -* and reports an error otherwise. - -* Parameters: -* name -* The name string to check -* noun -* A word to describe the object which the name applies to - for use in -* error messages only. -* method -* The name of the calling method - for use in error messages only. -* nullok -* If non-zero, then a null or empty name is assumed to be -* acceptable. -* status -* Pointer to the inherited status variable. -*/ - -/* Local Variables: */ - const char *c; /* Pointer to next character to check */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the string is not null. */ - if( !name ) { - if( !nullok ) astError( AST__XMLNM, "%s: A NULL pointer was supplied " - "instead of an XML %s name.", status, method, noun ); - } else { - - c = name; - if( *c == 0 ) { - if( !nullok ) astError( AST__XMLNM, "%s: An empty string was supplied " - "instead of an XML %s name.", status, method, noun ); - } else { - - if( !isalpha( *c ) && *c != '_' ) { - astError( AST__XMLNM, "%s: The illegal XML %s name \"%s\" was " - "encountered.", status, method, noun, name ); - - } else { - while( *(++c) ) { - if( !isalnum( *c ) && *c != '_' && *c != '-' && *c != '.' ){ - astError( AST__XMLNM, "%s: The illegal XML %s name \"%s\" was " - "encountered.", status, method, noun, name ); - break; - } - } - } - } - } -} - -static void CheckPrefName( char *name, const char *noun, const char *method, int *status ){ -/* -* Name: -* CheckPrefName - -* Purpose: -* Checks the supplied string is a valid XML (prefix:)name. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* void CheckPrefName( char *name, const char *noun, const char *method, int *status ) - -* Description: -* This function checks that the supplied string is a valid XML -* (prefix:)name combination and reports an error otherwise. - -* Parameters: -* name -* The string to check -* noun -* A word to describe the object which the name applies to - for use in -* error messages only. -* method -* The name of the calling method - for use in error messages only. -* status -* Pointer to the inherited status variable. -*/ - -/* Local Variables: */ - char *colon; /* Pointer to first colon */ - char *temp; /* Pointer to temporary string */ - int nc; /* Length of temporary string */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Search for a ":" character. */ - colon = strchr( name, ':' ); - -/* If found, temporarily convert the colon into a null so that it - terminates the prefix string. */ - if( colon ) { - *colon = 0; - -/* Check the string before the colon is a valid name. */ - temp = NULL; - temp = astAppendString( temp, &nc, noun ); - temp = astAppendString( temp, &nc, " prefix" ); - CheckName( name, temp, method, 0, status ); - temp = astFree( temp ); - -/* Restore the colon. */ - *colon = ':'; - -/* Check the string following the colon is a valid name. */ - CheckName( colon + 1, noun, method, 0, status ); - -/* If not found, the whole supplied string must be a name. */ - } else { - CheckName( name, noun, method, 0, status ); - } -} - -static int CheckType( long int given, long int want, int *status ){ -/* -* Name: -* CheckType - -* Purpose: -* Check that the supplied type identifies an object of a given class. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* int CheckType( long int given, long int want, int *status ) - -* Description: -* This function checks that the supplied type identifier identifies -* a specified class of XML object, or a derived class. A flag is -* returned indicating if the check succeeds. No error is reported if -* the check fails. - -* Parameters: -* given -* The type value to be checked. -* want -* The type of the required class. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* Non-zero if the check is passed, zero if not of if an error has -* already occurred. - -* Notes: -* - This function attempts to execute even if the error status is set. -*/ - -/* Local Variables: */ - int result; /* Returned value */ - -/* Initialise */ - result = 0; - -/* Check the wanted type is recognised. Report an error if not. */ - if( want != AST__XMLOBJECT && - want != AST__XMLELEM && - want != AST__XMLATTR && - want != AST__XMLCHAR && - want != AST__XMLCDATA && - want != AST__XMLCOM && - want != AST__XMLPI && - want != AST__XMLNAME && - want != AST__XMLCONT && - want != AST__XMLPRO && - want != AST__XMLDEC && - want != AST__XMLDTD && - want != AST__XMLMISC && - want != AST__XMLBLACK && - want != AST__XMLWHITE && - want != AST__XMLPAR && - want != AST__XMLDOC ) { - if( astOK ) { - astError( AST__INTER, "CheckType(Xml): Unsupported XML object " - "type (%ld) supplied for parameter \"want\" (internal " - "AST programming error). ", status, want ); - } - -/* You should never be given a generic "interface" type since the - "wanted" value comes from the "type" component of an XmlObject (an explicit - class type should always be given). */ - } else if( given == AST__XMLPAR || - given == AST__XMLMISC || - given == AST__XMLCONT || - given == AST__XMLCHAR ) { - if( astOK ) { - astError( AST__INTER, "CheckType(Xml): Generic type (%ld) supplied for " - "parameter \"given\" (internal AST programming error).", status, - given ); - } - -/* If the above is OK, return a non-zero value if the type to be tested - equals the wanted type. */ - } else if( want == given ) { - result = 1; - -/* If any class of XmlObject is acceptable, check that he given class - type is a valid XML class type. */ - } else if( want == AST__XMLOBJECT ) { - result = ( given == AST__XMLELEM || - given == AST__XMLATTR || - given == AST__XMLCDATA || - given == AST__XMLCOM || - given == AST__XMLPI || - given == AST__XMLNAME || - given == AST__XMLPRO || - given == AST__XMLDEC || - given == AST__XMLDTD || - given == AST__XMLWHITE || - given == AST__XMLBLACK || - given == AST__XMLDOC ); - -/* Otherwise, for "interface" types, check if the given class "implements - the interface". */ - } else if( want == AST__XMLCONT ) { - result = ( given == AST__XMLELEM || - given == AST__XMLBLACK || - given == AST__XMLWHITE || - given == AST__XMLCDATA || - given == AST__XMLCOM || - given == AST__XMLPI ); - - } else if( want == AST__XMLMISC ) { - result = ( given == AST__XMLWHITE || - given == AST__XMLCOM || - given == AST__XMLPI ); - - } else if( want == AST__XMLCHAR ) { - result = ( given == AST__XMLWHITE || - given == AST__XMLBLACK ); - - } else if( want == AST__XMLPAR ) { - result = ( given == AST__XMLDOC || - given == AST__XMLPRO || - given == AST__XMLELEM ); - } - -/* Return the result. */ - return result; -} - -int astXmlCheckType_( void *this, long int want, int *status ){ -/* -*+ -* Name: -* astXmlCheckType - -* Purpose: -* Check that the supplied object is of a given class. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* int astXmlCheckType( void *this, long int want ) - -* Description: -* This function checks that the supplied XmlObject is of a specified -* class of XML object, or a derived class. A flag is returned indicating -* if the check succeeds. No error is reported if the check fails. - -* Parameters: -* this -* The object to check. -* want -* The type of the required class. - -* Returned Value: -* Non-zero if the check is passed, zero if not of if an error has -* already occurred. - -* Notes: -* - This function attempts to execute even if the error status is set. -*- -*/ - - if( this ) { - return CheckType( ((AstXmlObject *) this)->type, want, status ); - } else { - return 0; - } -} - -static char *CleanText( const char *text, int *status ){ -/* -* Name: -* CleanText - -* Purpose: -* Normalise end-of-lines in the supplied text. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* char *CleanText( const char *text, int *status ) - -* Description: -* This function returns a copy of "text in which "\r\n" has been -* replaced by "\n" and any remaining "\r" characters have been -* replaced by "\n". - -* Parameters: -* text -* A pointer to a text string. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A pointer to a dynamically allocated string containing the required -* copy. - -* Notes: -* - NULL is returned if this function is called with the global error -* status set, or if it should fail for any reason. -*/ - -/* Local Variables: */ - char *d; /* Pointer to next returned character */ - char *result; /* Returned pointer */ - char *c; /* Pointer to next supplied character */ - char lc; /* Previous character */ - -/* Initialise */ - result = NULL; - -/* Return if the pointer is NULL or if an error has occurred. */ - if( !astOK || !text ) return result; - -/* Take a copy of the supplied text */ - result = astStore( NULL, text, strlen( text ) + 1 ); - -/* Clean the text by replacing "\r\n" by "\n". */ - c = result - 1; - d = c; - lc = 0; - while( *(++c) ) { - if( *c != '\n' || lc != '\r' ) d++; - *d = ( lc = *c ); - } - *(++d) = 0; - -/* Now further clean it by replacing "\r" by "\n". */ - c = result - 1; - while( *(++c) ) { - if( *c == '\r' ) *c = '\n'; - } - -/* Return the result. */ - return result; -} - -static void CleanXml( AstXmlObject *this, long int type, int *status ){ -/* -* Name: -* CleanXml - -* Purpose: -* Free the resources used within an XmlObject. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* void CleanXml( AstXmlObject *this, long int type, int *status ) - -* Description: -* This function frees the resources used internally within the -* supplied XmlObject. - -* Parameters: -* this -* pointer to the XmlObject to be cleaned. -* type -* The type of XmlObject being cleaned. -* status -* Pointer to the inherited status variable. - -* Notes: -* This function attempts to execute even if an error has already -* occurred. -*- -*/ - -/* Local Variables: */ - AstXmlAttribute *attr; - AstXmlBlack *black; - AstXmlCDataSection *cdatasec; - AstXmlComment *comm; - AstXmlDTDec *dtd; - AstXmlDeclPI *dec; - AstXmlDocument *doc; - AstXmlElement *elem; - AstXmlNamespace *ns; - AstXmlPI *pi; - AstXmlPrologue *pro; - AstXmlWhite *white; - -/* Return if a NULL pointer has been suppplied. */ - if( !this ) return; - -/* For the base XmlObject class, clear the object type, etc. */ - if( type == AST__XMLOBJECT ){ - this->type = AST__XMLBAD; - this->parent = NULL; - -/* For each derived class of XmlObject, first clean the parent component, - then clean any further resources. */ - } else if( type == AST__XMLELEM ){ - - elem = (AstXmlElement *) this; - - elem->name = astFree( elem->name ); - elem->defns = astFree( elem->defns ); - elem->prefix = astFree( elem->prefix ); - - while( elem->nattr > 0 ) astXmlDelete( elem->attrs[ 0 ] ); - elem->attrs = astFree( elem->attrs ); - - while( elem->nitem > 0 ) astXmlDelete( elem->items[ 0 ] ); - elem->items = astFree( elem->items ); - - while( elem->nnspref > 0 ) astXmlDelete( elem->nsprefs[ 0 ] ); - elem->nsprefs = astFree( elem->nsprefs ); - - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLATTR ){ - attr = (AstXmlAttribute *) this; - attr->name = astFree( attr->name ); - attr->value = astFree( attr->value ); - attr->prefix = astFree( attr->prefix ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLBLACK ){ - black = (AstXmlBlack *) this; - black->text = astFree( black->text ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLWHITE ){ - white = (AstXmlWhite *) this; - white->text = astFree( white->text ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLCDATA ){ - cdatasec = (AstXmlCDataSection *) this; - cdatasec->text = astFree( cdatasec->text ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLCOM ){ - comm = (AstXmlComment *) this; - comm->text = astFree( comm->text ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLPI ){ - pi = (AstXmlPI *) this; - pi->target = astFree( pi->target ); - pi->text = astFree( pi->text ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLNAME ){ - ns = (AstXmlNamespace *) this; - ns->prefix = astFree( ns->prefix ); - ns->uri = astFree( ns->uri ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLDOC ){ - doc = (AstXmlDocument *) this; - doc->prolog = astXmlDelete( doc->prolog ); - doc->root = astXmlDelete( doc->root ); - while( doc->nepi > 0 ) astXmlDelete( doc->epilog[ 0 ] ); - doc->epilog = astFree( doc->epilog ); - doc->current = NULL; - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLPRO ){ - pro = (AstXmlPrologue *) this; - pro->xmldecl = astXmlDelete( pro->xmldecl ); - while( pro->nmisc1 > 0 ) astXmlDelete( pro->misc1[ 0 ] ); - pro->misc1 = astFree( pro->misc1 ); - pro->dtdec = astXmlDelete( pro->dtdec ); - while( pro->nmisc2 > 0 ) astXmlDelete( pro->misc2[ 0 ] ); - pro->misc2 = astFree( pro->misc2 ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLDEC ){ - dec = (AstXmlDeclPI *) this; - dec->text = astFree( dec->text ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( type == AST__XMLDTD ){ - dtd = (AstXmlDTDec *) this; - dtd->name = astFree( dtd->name ); - dtd->external = astFree( dtd->external ); - dtd->internal = astFree( dtd->internal ); - CleanXml( this, AST__XMLOBJECT, status ); - - } else if( astOK ) { - astError( AST__INTER, "CleanXml: Invalid object type (%ld) supplied " - "(internal AST programming error).", status, type ); - } - -} - -static const char *DefaultURI( AstXmlElement *elem, int *status ){ -/* -* Name: -* DefaultURI - -* Purpose: -* Find the URI associated with the default namespace. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* const char *DefaultURI( AstXmlElement *elem, int *status ) - -* Description: -* This function returns the default namespace URI defined within the -* given element. If the element does not define a default namespace URI, -* then this function is called recursively on the parent element. If -* there is no parent element, NULL is returned. - -* Parameters: -* elem -* The pointer to the XmlElement. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* Pointer to a string holding the URI, or NULL if not found. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*/ - -/* Local Variables: */ - AstXmlParent *parent; /* Parent of "this" */ - const char *result; /* Returned pointer */ - -/* Initialise */ - result = NULL; - -/* Check the global error status, and the supplied element. */ - if( !astOK || !elem ) return result; - -/* If the supplied element defines a default namespace URI, return it. - Otherwise, call this function to get the default namespace URI from the - parent element. */ - result = elem->defns; - if( !result ) { - parent = ( (AstXmlObject *) elem )->parent; - if( astXmlCheckType( parent, AST__XMLELEM ) ) { - result = DefaultURI( (AstXmlElement *) parent, status ); - } - } - -/* If the element has a blank default namespace URI, then return NULL - since the XML namespaces specification says that "The default - namespace can be set to the empty string. This has the same effect, - within the scope of the declaration, of there being no default - namespace". */ - if( result && astChrLen( result ) == 0 ) result = NULL; - -/* Return the result. */ - return result; -} - -void *astXmlDelete_( void *obj_ptr, int *status ){ -/* -*+ -* Name: -* astXmlDelete - -* Purpose: -* Remove the supplied XmlObject from its parent and delete it. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* void *astXmlDelete( void *obj ) - -* Description: -* This function removes the supplied XmlObject from its parent and -* deletes it using astXmlAnnul. - -* Parameters: -* obj -* The pointer to the XmlObject to be deleted. - -* Returned Value: -* NULL - -* Notes: -* - This function attempts to execute even if an error has already -* occurred. -*- -*/ - -/* Local Variables: */ - AstXmlDocument *doc; /* Pointer to XM document */ - AstXmlElement *elem; /* Pointer to XML element */ - AstXmlObject *obj; /* Pointer to XmlObject */ - AstXmlParent *parent; /* Pointer to parent */ - AstXmlPrologue *pro; /* Pointer to XML prologue */ - int i; /* Loop counter */ - int j; /* Loop counter */ - int n; /* Number of values in list */ - int ok; /* Is obj a child of its parent? */ - void *result; /* Returned pointer */ - -/* Initialise */ - result = NULL; - ok = 0; - -/* Check we have an XmlObject. */ - if( !astXmlCheckType( obj_ptr, AST__XMLOBJECT ) ) return result; - -/* Get the parent of the supplied object. */ - obj = (AstXmlObject *) obj_ptr; - parent = obj->parent; - if( parent ) { - -/* First deal with cases where we are deleting items from a document. */ - if( astXmlCheckType( parent, AST__XMLDOC ) ) { - doc = (AstXmlDocument *) parent; - - if( astXmlCheckType( obj, AST__XMLPRO ) ) { - if( (AstXmlPrologue *) obj == doc->prolog ) { - doc->prolog = NULL; - ok = 1; - } - - } else if( astXmlCheckType( obj, AST__XMLELEM ) ) { - if( (AstXmlElement *) obj == doc->root ) { - doc->root = NULL; - ok = 1; - } - - } else if( astXmlCheckType( obj, AST__XMLMISC ) ) { - n = doc->nepi; - for( i = 0; i < n; i++ ) { - if( doc->epilog[ i ] == (AstXmlMiscItem *) obj ) { - for( j = i + 1; j < n; j++ ) { - doc->epilog[ j - 1 ] = doc->epilog[ j ]; - } - doc->epilog[ --doc->nepi ] = NULL; - ok = 1; - break; - } - } - - } else if( astOK ) { - astError( AST__INTER, "astXmlDelete(xml): XmlObject of type %ld has " - "inappropriate parent of type %ld (internal AST " - "programming error).", status, obj->type, parent->type ); - } - -/* Now deal with cases where we are deleting items from a prologue. */ - } else if( astXmlCheckType( parent, AST__XMLPRO ) ) { - pro = (AstXmlPrologue *) parent; - - if( astXmlCheckType( obj, AST__XMLDEC ) ) { - if( (AstXmlDeclPI *) obj == pro->xmldecl ) { - pro->xmldecl = NULL; - ok = 1; - } - - } else if( astXmlCheckType( obj, AST__XMLDTD ) ) { - if( (AstXmlDTDec *) obj == pro->dtdec ) { - pro->dtdec = NULL; - ok = 1; - } - - } else if( astXmlCheckType( obj, AST__XMLMISC ) ) { - n = pro->nmisc1; - for( i = 0; i < n; i++ ) { - if( pro->misc1[ i ] == (AstXmlMiscItem *) obj ) { - for( j = i + 1; j < n; j++ ) { - pro->misc1[ j - 1 ] = pro->misc1[ j ]; - } - pro->misc1[ --pro->nmisc1 ] = NULL; - ok = 1; - break; - } - } - - if( !ok ) { - n = pro->nmisc2; - for( i = 0; i < n; i++ ) { - if( pro->misc2[ i ] == (AstXmlMiscItem *) obj ) { - for( j = i + 1; j < n; j++ ) { - pro->misc2[ j - 1 ] = pro->misc2[ j ]; - } - pro->misc2[ --pro->nmisc2 ] = NULL; - ok = 1; - break; - } - } - } - - } else if( astOK ) { - astError( AST__INTER, "astXmlDelete(xml): XmlObject of type %ld has " - "inappropriate parent of type %ld (internal AST " - "programming error).", status, obj->type, parent->type ); - } - -/* Now deal with cases where we are deleting items from an element. */ - } else if( astXmlCheckType( parent, AST__XMLELEM ) ) { - elem = (AstXmlElement *) parent; - -/* Remove the object form the appropriate list in the parent, and - then shuffle down the remaining entries in the list and decrement the - size of the list. */ - if( astXmlCheckType( obj, AST__XMLATTR ) ) { - n = elem->nattr; - for( i = 0; i < n; i++ ) { - if( elem->attrs[ i ] == (AstXmlAttribute *) obj ) { - for( j = i + 1; j < n; j++ ) { - elem->attrs[ j - 1 ] = elem->attrs[ j ]; - } - elem->attrs[ --elem->nattr ] = NULL; - ok = 1; - break; - } - } - - } else if( astXmlCheckType( obj, AST__XMLNAME ) ) { - n = elem->nnspref; - for( i = 0; i < n; i++ ) { - if( elem->nsprefs[ i ] == (AstXmlNamespace *) obj ) { - for( j = i + 1; j < n; j++ ) { - elem->nsprefs[ j - 1 ] = elem->nsprefs[ j ]; - } - elem->nsprefs[ --elem->nnspref ] = NULL; - ok = 1; - break; - } - } - - } else if( astXmlCheckType( obj, AST__XMLCONT ) ) { - n = elem->nitem; - for( i = 0; i < n; i++ ) { - if( elem->items[ i ] == (AstXmlContentItem *) obj ) { - for( j = i + 1; j < n; j++ ) { - elem->items[ j - 1 ] = elem->items[ j ]; - } - elem->items[ --elem->nitem ] = NULL; - ok = 1; - break; - } - } - } - - } else if( astOK ) { - astError( AST__INTER, "astXmlDelete(xml): XmlObject of type %ld has " - "inappropriate parent of type %ld (internal AST " - "programming error).", status, obj->type, parent->type ); - } - -/* Nullify the parent pointer so that astXmlAnnul will delete the object. */ - obj->parent = NULL; - -/* If the supplied object has no parent, we can continue to annul it. */ - } else { - ok = 1; - } - -/* Report an error if required. */ - if( !ok && astOK ) { - astError( AST__INTER, "astXmlDelete(xml): Supplied XmlObject (type %ld) " - "is not owned by its own parent (internal AST " - "programming error).", status, obj->type ); - } - -/* Delete the object. */ - result = astXmlAnnul( obj ); - -/* Annul the object and return the resulting NULL pointer. */ - return result; -} - -static AstXmlAttribute *FindAttribute( AstXmlElement *this, const char *name0, - int *status ){ -/* -* Name: -* FindAttribute - -* Purpose: -* Search an XmlElement for a named attribute - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* AstXmlAttribute *FindAttribute( AstXmlElement *this, const char *name0, -* int *status ) - -* Description: -* This function searches the supplied XmlElement for an attribute -* with the given name. If found, a pointer to the XmlAttribute is -* returned. Otherwise NULL is returned. - -* Parameters: -* this -* The pointer to the XmlElement. -* name0 -* Pointer to a string holding the name of the attribute. The name -* may be preceded with a "prefix:" string, in which case the -* prefix will also be matched. If no prefix is included, the first -* attribute with the specified name is returned, regardless of -* its prefix. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* Pointer to the XmlAttribute, or NULL if not found. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*/ - -/* Local Variables: */ - AstXmlAttribute *result; /* Returned pointer */ - char name_buffer[ 50 ]; /* Buffer for name */ - char prefix_buffer[ 50 ]; /* Buffer for prefix */ - const char *colon; /* Pointer to colon in supplied string */ - const char *name1; /* Pointer to name to be checked */ - const char *name; /* Pointer to name to be searched for */ - const char *prefix1; /* Pointer to prefix to be checked */ - const char *prefix; /* Pointer to prefix to be searched for */ - int i; /* Loop count */ - size_t len; /* Length of string */ - -/* Initialise */ - result = NULL; - name = name0; - prefix = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* If the supplied name string contains a colon, split it up into prefix - and name. */ - if( ( colon = strchr( name0, ':' ) ) ) { - len = colon - name0; - - if( len > 49 ) { - astError( AST__XMLNM, "FindAttribute: The XML prefix in \"%s\" " - "is too long (> 49 characters).", status, name0 ); - } else { - strncpy( prefix_buffer, name0, len ); - prefix_buffer[ len ] = 0; - prefix = prefix_buffer; - len = strlen( colon + 1 ); - - if( len > 49 ) { - astError( AST__XMLNM, "FindAttribute: The XML attribute name " - "in \"%s\" is too long (> 49 characters).", status, name0 ); - } else { - strcpy( name_buffer, colon + 1 ); - name = name_buffer; - } - - } - - } - -/* Loop round all the attributes in the element. */ - for( i = 0; i < this->nattr; i++ ) { - name1 = this->attrs[ i ]->name; - prefix1 = this->attrs[ i ]->prefix; - -/* Compare the attribute name (and prefix) with the supplied name (and - prefix). Leave the loop if they match. */ - if( !strcmp( name1, name ) && - ( !prefix || ( prefix1 && !strcmp( prefix1, prefix ) ) ) ) { - result = this->attrs[ i ]; - break; - } - } - -/* Return the result. */ - return result; -} - -static const char *Format( AstXmlObject *this, int ind, int *status ){ -/* -* Name: -* Format - -* Purpose: -* Converts an XmlObject into a character string. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* const char *Format( AstXmlObject *this, int ind, int *status ) - -* Description: -* This function returns a pointer to a dynamically allocated string -* containing a textual representation of the supplied XmlObject. - -* Parameters: -* this -* Pointer to the XmlObject to format. -* ind -* If the XmlObject is an element, then each content item within -* the element will be prefixed by a string containing "ind" spaces -* (indenting the returned element itself is the responsibility of -* the caller and so "this" is not itself indented within this function). -* In addition, a newline character will be included at the start -* of the prefix if required, to ensure that each new item starts -* on a new line. If "ind" is less than zero, then no prefixes are -* added. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* Pointer to a null terminated string holding the formated XmlObject. -* This string should be freed when no longer needed using astFree. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*/ - -/* Local Variables: */ - AstXmlPrologue *pro; /* Pointer to XML prologue */ - AstXmlDocument *doc; /* Pointer to XML document */ - AstXmlAttribute *attrib; /* Pointer to XML attribute */ - AstXmlWhite *white; /* Pointer to character data */ - AstXmlBlack *black; /* Pointer to character data */ - AstXmlElement *elem; /* Pointer to XML element */ - AstXmlNamespace *ns; /* Pointer to XML namespace instruction */ - char *result; /* The returned pointer */ - const char *temp; /* A temporary string pointer */ - int i; /* Loop count */ - int nc; /* Length of returned string */ - int type; /* Object type */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK || !this ) return result; - -/* Get the object type */ - type = this->type; - -/* If this is an element... */ - if( this->type == AST__XMLELEM ) { - temp = FormatTag( this, 1, status ); - result = astAppendString( result, &nc, temp ); - temp = astFree( (void *) temp ); - - elem = (AstXmlElement *) this; - if( elem->nitem > 0 ) { - -/* Go round all the items of content. */ - for( i = 0; i < elem->nitem; i++ ) { - -/* Ignore whitespace elements unless we are not producing indentation. */ - if( !astXmlCheckType( elem->items[ i ], AST__XMLWHITE ) || - ind < 0 ) { - -/* Format the item */ - temp = Format( (AstXmlObject *) elem->items[ i ], ( ( ind > -1 ) ? ind + IND_INC : -1 ), status ); - if( temp ) { - -/* Now append the next item of content, and free its memory. */ - if( ind > -1 ) { - result = AppendLine( result, &nc, temp, - ( (ind > -1) ? ind + IND_INC : -1 ), status ); - } else { - result = astAppendString( result, &nc, temp ); - } - temp = astFree( (void *) temp ); - } - } - } - -/* Finally append the end tag. */ - temp = FormatTag( this, 0, status ); - if( ind > -1 ) { - result = AppendLine( result, &nc, temp, ind, status ); - } else { - result = astAppendString( result, &nc, temp ); - } - temp = astFree( (void *) temp ); - - } - -/* If this is an attribute... */ - } else if( type == AST__XMLATTR ){ - attrib = (AstXmlAttribute *) this; - - if( attrib->prefix ) { - result = astAppendString( result, &nc, attrib->prefix ); - result = astAppendString( result, &nc, ":" ); - } - - temp = AddEscapes( attrib->value, status ); - result = astAppendString( result, &nc, attrib->name ); - result = astAppendString( result, &nc, "=\"" ); - result = astAppendString( result, &nc, temp ); - result = astAppendString( result, &nc, "\"" ); - temp = astFree( (void *) temp ); - - } else if( type == AST__XMLWHITE ){ - white = (AstXmlWhite *) this; - temp = AddEscapes( white->text, status ); - result = astAppendString( result, &nc, temp ); - temp = astFree( (void *) temp ); - - } else if( type == AST__XMLBLACK ){ - black = (AstXmlBlack *) this; - temp = AddEscapes( black->text, status ); - result = astAppendString( result, &nc, temp ); - temp = astFree( (void *) temp ); - - } else if( type == AST__XMLCDATA || - type == AST__XMLCOM || - type == AST__XMLPI || - type == AST__XMLDEC || - type == AST__XMLDTD ){ - - temp = FormatTag( this, 1, status ); - result = astAppendString( result, &nc, temp ); - temp = astFree( (void *) temp ); - - } else if( type == AST__XMLNAME ){ - ns = (AstXmlNamespace *) this; - result = astAppendString( result, &nc, "xmlns:" ); - result = astAppendString( result, &nc, ns->prefix ); - result = astAppendString( result, &nc, "=\"" ); - result = astAppendString( result, &nc, ns->uri ); - result = astAppendString( result, &nc, "\"" ); - - } else if( type == AST__XMLPRO ){ - pro = (AstXmlPrologue *) this; - result = astAppendString( result, &nc, - Format( (AstXmlObject *) pro->xmldecl, ind, status ) ); - -/* Append all the miscalleneous items before the DTD. */ - for( i = 0; i < pro->nmisc1; i++ ) { - temp = Format( (AstXmlObject *) pro->misc1[ i ], ind, status ); - if( temp ) { - if( ind > -1 ) { - result = AppendLine( result, &nc, temp, ind, status ); - } else { - result = astAppendString( result, &nc, temp ); - } - temp = astFree( (void *) temp ); - } - } - -/* Append the DTD. */ - temp = Format( (AstXmlObject *) pro->dtdec, ind, status ); - if( temp ) { - if( ind > -1 ) { - result = AppendLine( result, &nc, temp, ind, status ); - } else { - result = astAppendString( result, &nc, temp ); - } - temp = astFree( (void *) temp ); - } - -/* Append all the miscalleneous items after the DTD. */ - for( i = 0; i < pro->nmisc2; i++ ) { - temp = Format( (AstXmlObject *) pro->misc2[ i ], ind, status ); - if( temp ) { - if( ind > -1 ) { - result = AppendLine( result, &nc, temp, ind, status ); - } else { - result = astAppendString( result, &nc, temp ); - } - temp = astFree( (void *) temp ); - } - } - - } else if( type == AST__XMLDOC ){ - doc = (AstXmlDocument *) this; - -/* Format the prologue. */ - result = astAppendString( result, &nc, - Format( (AstXmlObject *) doc->prolog, ind, status ) ); - -/* Append the root element. */ - temp = Format( (AstXmlObject *) doc->root, ind, status ); - if( temp ) { - if( ind > -1 ) { - result = AppendLine( result, &nc, temp, ind, status ); - } else { - result = astAppendString( result, &nc, temp ); - } - temp = astFree( (void *) temp ); - } - -/* Append all the miscalleneous items in the epilogue. */ - for( i = 0; i < doc->nepi; i++ ) { - temp = Format( (AstXmlObject *) doc->epilog[ i ], ind, status ); - if( temp ) { - if( ind > -1 ) { - result = AppendLine( result, &nc, temp, ind, status ); - } else { - result = astAppendString( result, &nc, temp ); - } - temp = astFree( (void *) temp ); - } - } - - } else if( astOK ) { - astError( AST__INTER, "Format(xml): Invalid object type (%d) supplied " - "(internal AST programming error).", status, type ); - } - -/* Free the returned string if an error has occurred. */ - if( !astOK ) result = astFree( result ); - -/* Return the result. */ - return result; -} - -static char *FormatTag( AstXmlObject *this, int opening, int *status ){ -/* -* Name: -* FormatTag - -* Purpose: -* Returns a string holding an XML tag describing the given XmlObject. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* char *FormatTag( AstXmlObject *this, int opening, int *status ) - -* Description: -* This function returns a pointer to a dynamic string containing an -* XML tag describing the given XmlObject. - -* Parameters: -* this -* Pointer to the XmlObject. -* opening -* Indicates which tag is to be returned; the start tag or the end -* tag. If non-zero the start tag is returned. Otherwise, the -* end tag is returned. If the supplied XmlObject has no end -* tag (i.e. if it is an empty element, or if it is not an element), -* then NULL is returned but no error is reported. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* Pointer to a dynamically allocated string holding the tag. - -* Notes: -* - Empty elements are represented as an start tag of the form <.../>, -* with no corresponding end tag. -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*- -*/ - - -/* Local Variables: */ - AstXmlCDataSection *cdata;/* Pointer to XML CDATA section */ - AstXmlElement *elem; /* Pointer to XML element */ - AstXmlComment *com; /* Pointer to XML comment */ - AstXmlPI *pi; /* Pointer to XML processing instruction */ - AstXmlDTDec *dtd; /* Pointer to XML data type declaration */ - AstXmlDeclPI *xmlpi; /* XML version declaration */ - char *result; /* The returned pointer */ - const char *temp; /* A temporary string pointer */ - int i; /* Loop count */ - int nc; /* Length of returned string */ - int type; /* Object type */ - -/* Initialise */ - result = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* Get the object type */ - type = this->type; - -/* If this is an element... */ - if( this->type == AST__XMLELEM ) { - elem = (AstXmlElement *) this; - - if( opening ) { - result = astAppendString( result, &nc, "<" ); - if( elem->prefix ) { - result = astAppendString( result, &nc, elem->prefix ); - result = astAppendString( result, &nc, ":" ); - } - result = astAppendString( result, &nc, elem->name ); - - if( elem->defns ) { - result = astAppendString( result, &nc, " xmlns=\"" ); - result = astAppendString( result, &nc, elem->defns ); - result = astAppendString( result, &nc, "\"" ); - } - - for( i = 0; i < elem->nnspref; i++ ) { - temp = Format( (AstXmlObject *) elem->nsprefs[ i ], -1, status ); - if( temp ) { - result = AppendChar( result, &nc, ' ', status ); - result = astAppendString( result, &nc, temp ); - temp = astFree( (void *) temp ); - } - } - - for( i = 0; i < elem->nattr; i++ ) { - temp = Format( (AstXmlObject *) elem->attrs[ i ], -1, status ); - if( temp ){ - result = AppendChar( result, &nc, ' ', status ); - result = astAppendString( result, &nc, temp ); - temp = astFree( (void *) temp ); - } - } - - if( elem->nitem == 0 ) result = astAppendString( result, &nc, "/" ); - result = astAppendString( result, &nc, ">" ); - - } else if( elem->nitem > 0 ) { - result = astAppendString( result, &nc, "</" ); - if( elem->prefix ) { - result = astAppendString( result, &nc, elem->prefix ); - result = astAppendString( result, &nc, ":" ); - } - result = astAppendString( result, &nc, elem->name ); - result = astAppendString( result, &nc, ">" ); - } - - } else if( type == AST__XMLDTD ){ - dtd = (AstXmlDTDec *) this; - if( opening && dtd->name && dtd->name[0] ) { - result = astAppendString( result, &nc, "<!DOCTYPE " ); - result = astAppendString( result, &nc, dtd->name ); - if( dtd->external && dtd->external[ 0 ] ) { - result = astAppendString( result, &nc, " " ); - result = astAppendString( result, &nc, dtd->external ); - } - if( dtd->internal && dtd->internal[ 0 ] ) { - result = astAppendString( result, &nc, " [" ); - result = astAppendString( result, &nc, dtd->internal ); - result = astAppendString( result, &nc, "]" ); - } - result = astAppendString( result, &nc, ">" ); - } - - } else if( type == AST__XMLCDATA ){ - if( opening ) { - cdata = (AstXmlCDataSection *) this; - result = astAppendString( result, &nc, "<![CDATA[" ); - result = astAppendString( result, &nc, cdata->text ); - result = astAppendString( result, &nc, "]]>" ); - } - - } else if( type == AST__XMLCOM ){ - if( opening ) { - com = (AstXmlComment *) this; - result = astAppendString( result, &nc, "<!--" ); - result = astAppendString( result, &nc, com->text ); - result = astAppendString( result, &nc, "-->" ); - } - - } else if( type == AST__XMLPI ){ - pi = (AstXmlPI *) this; - if( opening ) { - result = astAppendString( result, &nc, "<?" ); - result = astAppendString( result, &nc, pi->target ); - if( pi->text && pi->text[0] ) { - result = astAppendString( result, &nc, " " ); - result = astAppendString( result, &nc, pi->text ); - } - result = astAppendString( result, &nc, "?>" ); - } - - } else if( type == AST__XMLDEC ){ - xmlpi = (AstXmlDeclPI *) this; - if( opening && xmlpi->text && xmlpi->text[0] ) { - result = astAppendString( result, &nc, "<?xml" ); - if( xmlpi->text && xmlpi->text[0] ) { - result = astAppendString( result, &nc, " " ); - result = astAppendString( result, &nc, xmlpi->text ); - } - result = astAppendString( result, &nc, "?>" ); - } - } - -/* If notOK, free the rteurned string. */ - if( !astOK ) result = astFree( result ); - -/* Return the result. */ - return result; -} - -static void InitXmlAttribute( AstXmlAttribute *new, int type, const char *name, - const char *value, const char *prefix, int *status ){ -/* -* Name: -* InitXmlAttribute - -* Purpose: -* Initialise a new XmlAttribute. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlAttribute( AstXmlAttribute *new, int type, const char *name, -* const char *value, const char *prefix, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlAttribute -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* name -* The name for the attribute. -* value -* The value for the attribute -* prefix -* The namespace prefix for the attribute. May be NULL or blank, in -* which case any prefix at the start of "name" is used. -* status -* Pointer to the inherited status variable. -*/ - -/* Local Variables: */ - const char *colon; /* Pointer to colon within supplied name */ - char *newname; /* Pointer to name string (no prefix) */ - char *newpref; /* Pointer to name string */ - int nc; /* Length of prefix string */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLATTR, status ) ){ - astError( AST__INTER, "InitXmlAttribute: Supplied object type (%d) " - "does not represent an XmlAttribute", status, type ); - } - -/* Ensure we have non-NULL pointers. */ - if( !name ) name = ""; - if( !value ) value = ""; - -/* If no prefix was supplied, extract any prefix from the start of the - supplied name. */ - newname = (char *) name; - newpref = (char *) prefix; - colon = NULL; - - if( !prefix || astChrLen( prefix ) == 0 ){ - colon = strchr( name, ':' ); - if( colon ) { - nc = colon - name; - newpref = astStore( NULL, name, nc + 1 ); - newpref[ nc ] = 0; - - nc = strlen( name ) - ( colon - name ) - 1; - newname = astStore( NULL, colon + 1, nc + 1 ); - newname[ nc ] = 0; - } - } - -/* Check the supplied name and prefix are valid XML 'names'. */ - CheckName( newname, "attribute", "InitXmlAttribute", 0, status ); - CheckName( newpref, "attribute", "InitXmlAttribute", 1, status ); - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Initialise the items specific to this class of structure. */ - new->name = astStore( NULL, newname, strlen( newname ) + 1 ); - new->value = astStore( NULL, value, strlen( value ) + 1 ); - new->prefix = NULL; - if( newpref ) { - nc = strlen( newpref ); - if( nc > 0 ) new->prefix = astStore( NULL, newpref, nc + 1 ); - } - -/* Free any name and prefix extracted from the supplied name string */ - if( colon ) { - newname = astFree( newname ); - newpref = astFree( newpref ); - } -} - -static void InitXmlCDataSection( AstXmlCDataSection *new, int type, - const char *text, int *status ){ -/* -* Name: -* InitXmlCDataSection - -* Purpose: -* Initialise a new XmlCDataSection. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlCDataSection( AstXmlCDataSection *new, int type, -* const char *text, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlCDataSection -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* text -* Pointer to a null terminated string holding the text. -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLCDATA, status ) ){ - astError( AST__INTER, "InitXmlCDataSection: Supplied object type (%d) " - "does not represent an XmlCDataSection", status, type ); - } - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Ensure we have non-NULL pointers. */ - if( !text ) text = ""; - -/* Initialise the items specific to this class of structure. */ - new->text = astStore( NULL, text, strlen( text ) + 1 ); -} - -static void InitXmlWhite( AstXmlWhite *new, int type, const char *text, int *status ){ -/* -* Name: -* InitXmlWhite - -* Purpose: -* Initialise a new XmlWhite. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlWhite( AstXmlWhite *new, int type, const char *text, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlWhite -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* text -* Pointer to a null terminated string holding the text. -* status -* Pointer to the inherited status variable. -*/ - -/* Local Variables: */ - const char *c; /* Pointer to next character */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLWHITE, status ) ){ - astError( AST__INTER, "InitXmlWhite: Supplied object type (%d) " - "does not represent an XmlWhite", status, type ); - } - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Ensure we have non-NULL pointers. */ - if( !text ) text = ""; - -/* Report an error if the text is not white. */ - c = text - 1; - while( *(++c) ) { - if( !isspace( *c ) ) { - astError( AST__XMLCM, "InitXmlWhite(xml): Illegal XML whitespace " - "string supplied \"%s\" - not all characters are white.", status, - text ); - break; - } - } - -/* Initialise the items specific to this class of structure. */ - new->text = astStore( NULL, text, strlen( text ) + 1 ); -} - -static void InitXmlBlack( AstXmlBlack *new, int type, const char *text, int *status ){ -/* -* Name: -* InitXmlBlack - -* Purpose: -* Initialise a new XmlBlack. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlBlack( AstXmlBlack *new, int type, const char *text, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlBlack -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* text -* Pointer to a null terminated string holding the text. -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLBLACK, status ) ){ - astError( AST__INTER, "InitXmlBlack: Supplied object type (%d) " - "does not represent an XmlBlack", status, type ); - } - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Ensure we have non-NULL pointers. */ - if( !text ) text = ""; - -/* Initialise the items specific to this class of structure. */ - new->text = astStore( NULL, text, strlen( text ) + 1 ); -} - -static void InitXmlComment( AstXmlComment *new, int type, const char *text, int *status ){ -/* -* Name: -* InitXmlComment - -* Purpose: -* Initialise a new XmlComment. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlComment( AstXmlComment *new, int type, const char *text, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlComment -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* text -* Pointer to a null terminated string holding the text. -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLCOM, status ) ){ - astError( AST__INTER, "InitXmlComment: Supplied object type (%d) " - "does not represent an XmlComment", status, type ); - } - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Ensure we have non-NULL pointers. */ - if( !text ) text = ""; - -/* Initialise the items specific to this class of structure. Report an error - if the comment is illegal. */ - if( strstr( text, "--" ) && astOK ) { - astError( AST__XMLCM, "InitXmlCom(xml): Illegal XML comment " - "supplied \"%s\" - comments may not contain the " - "string \"--\".", status, text ); - new->text = NULL; - } else { - new->text = astStore( NULL, text, strlen( text ) + 1 ); - } -} - -static void InitXmlDeclPI( AstXmlDeclPI *new, int type, const char *text, int *status ){ -/* -* Name: -* InitXmlDeclPI - -* Purpose: -* Initialise a new XmlDeclPI. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlDeclPI( AstXmlDeclPI *new, int type, const char *text, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlDeclPI -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* text -* Pointer to a null terminated string holding the text. -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLDEC, status ) ){ - astError( AST__INTER, "InitXmlDeclPI: Supplied object type (%d) " - "does not represent an XmlDeclPI", status, type ); - } - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Ensure we have non-NULL pointers. */ - if( !text ) text = ""; - -/* Initialise the items specific to this class of structure. */ - new->text = astStore( NULL, text, strlen( text ) + 1 ); -} - -static void InitXmlDocument( AstXmlDocument *new, int type, int *status ){ -/* -* Name: -* InitXmlDocument - -* Purpose: -* Initialise a new XmlDocument. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlDocument( AstXmlDocument *new, int type, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlDocument -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLDOC, status ) ){ - astError( AST__INTER, "InitXmlDocument: Supplied object type (%d) " - "does not represent an XmlDocument", status, type ); - } - -/* Initialise the parent XmlObject */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Initialise the items specific to this class of structure. */ - new->prolog = NULL; - new->root = NULL; - new->epilog = NULL; - new->nepi = 0; - new->current = NULL; -} - -static void InitXmlDTDec( AstXmlDTDec *new, int type, const char *name, - const char *external, const char *internal, int *status ){ -/* -* Name: -* InitXmlDTDec - -* Purpose: -* Initialise a new XmlDTDec. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* void InitXmlDTDec( AstXmlDTDec *new, int type, const char *name, -* const char *external, const char *internal, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlDTDec -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* name -* The document type name -* external -* The external SYSTEM id. -* internal -* The internal declaration markup text (this is not checked or -* parsed). -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLDTD, status ) ){ - astError( AST__INTER, "InitXmlDTDec: Supplied object type (%d) " - "does not represent an XmlDTDec", status, type ); - } - -/* Initialise the parent XmlObject */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Ensure we have non-NULL pointers. */ - if( !name ) name = ""; - if( !external ) external = ""; - if( !internal ) internal = ""; - -/* Initialise the items specific to this class of structure. */ - new->name = astStore( NULL, name, strlen( name ) + 1 ); - new->external = astStore( NULL, external, strlen( external ) + 1 ); - new->internal = astStore( NULL, internal, strlen( internal ) + 1 ); -} - -static void InitXmlElement( AstXmlElement *new, int type, const char *name, - const char *prefix, int *status ){ -/* -* Name: -* InitXmlElement - -* Purpose: -* Initialise a new XmlElement. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlElement( AstXmlElement *new, int type, const char *name, -* const char *prefix, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlElement -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* name -* The name for the element. -* prefix -* The namespace prefix for the element. May be NULL or blank, in -* which case any prefix at the start of "name" is used. -* status -* Pointer to the inherited status variable. -*/ - -/* Local Variables: */ - const char *colon; /* Pointer to colon within supplied name */ - char *newname; /* Pointer to name string (no prefix) */ - char *newpref; /* Pointer to name string */ - int nc; /* Length of prefix string */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLELEM, status ) ){ - astError( AST__INTER, "InitXmlElement: Supplied object type (%d) " - "does not represent an XmlElement", status, type ); - } - -/* Ensure we have non-NULL pointers. */ - if( !name ) name = ""; - -/* If no prefix was supplied, extract any prefix from the start of the - supplied name. */ - newname = (char *) name; - newpref = (char *) prefix; - colon = NULL; - - if( !prefix || astChrLen( prefix ) == 0 ){ - colon = strchr( name, ':' ); - if( colon ) { - nc = colon - name; - newpref = astStore( NULL, name, nc + 1 ); - newpref[ nc ] = 0; - - nc = strlen( name ) - ( colon - name ) - 1; - newname = astStore( NULL, colon + 1, nc + 1 ); - newname[ nc ] = 0; - } - } - -/* Check the supplied name and prefix are valid XML 'names'. */ - CheckName( newname, "element", "InitXmlElement", 0, status ); - CheckName( newpref, "element", "InitXmlElement", 1, status ); - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Initialise the items specific to this class of structure. */ - new->name = astStore( NULL, newname, strlen( newname ) + 1 ); - new->attrs = NULL; - new->nattr = 0; - new->items = NULL; - new->nitem = 0; - new->defns = NULL; - new->nsprefs = NULL; - new->nnspref = 0; - new->complete = 0; - - new->prefix = NULL; - if( newpref ) { - nc = strlen( newpref ); - if( nc > 0 ) new->prefix = astStore( NULL, newpref, nc + 1 ); - } - -/* Free any name and prefix extracted from the supplied name string */ - if( colon ) { - newname = astFree( newname ); - newpref = astFree( newpref ); - } -} - -static void InitXmlNamespace( AstXmlNamespace *new, int type, const char *prefix, - const char *uri, int *status ){ -/* -* Name: -* InitXmlNamespace - -* Purpose: -* Initialise a new XmlNamespace. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlNamespace( AstXmlNamespace *new, int type, const char *prefix, -* const char *uri, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlNamespace -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* prefix -* Pointer to a null terminated string holding the namespace prefix. -* uri -* Pointer to a null terminated string holding the namespace URI. -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLNAME, status ) ){ - astError( AST__INTER, "InitXmlNamespace: Supplied object type (%d) " - "does not represent an XmlNamespace", status, type ); - } - -/* Ensure we have non-NULL pointers. */ - if( !prefix ) prefix = ""; - if( !uri ) uri = ""; - -/* Check the supplied prefix is a valid XML 'name'. */ - CheckName( prefix, "namespace prefix", "InitXmlNamespace", 0, status ); - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Initialise the items specific to this class of structure. */ - new->prefix = astStore( NULL, prefix, strlen( prefix ) + 1 ); - new->uri = astStore( NULL, uri, strlen( uri ) + 1 ); -} - -static void InitXmlObject( AstXmlObject *new, long int type, int *status ){ -/* -* Name: -* InitXmlObject - -* Purpose: -* Initialise a new XmlObject. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlObject( AstXmlObject *new, long int type, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlObject -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* status -* Pointer to the inherited status variable. -*/ - -/* Local Variables: */ - astDECLARE_GLOBALS /* Pointer to thread-specific global data */ - -/* Check the global error status. */ - if( !astOK ) return; - -/* If needed, get a pointer to the thread specific global data structure. */ - astGET_GLOBALS(NULL); - -/* Check the supplied object type is OK. Report an error if not. */ - if( !CheckType( type, AST__XMLOBJECT, status ) ){ - astError( AST__INTER, "InitXmlObject: Supplied object type (%ld) " - "is not appropriate for an XmlObject", status, type ); - } - -/* This class of structure is the base class for XML objects so it has no - parent class to be initialised. So just initialise the items specific to - this class of structure. */ - new->parent = NULL; - new->type = type; - new->id = next_id++; - -#ifdef DEBUG -/* Add the new XmlObject to the list of all XmlObjects. */ - AddObjectToList( new ); -#endif - -} - -static void InitXmlPI( AstXmlPI *new, int type, const char *target, - const char *text, int *status ){ -/* -* Name: -* InitXmlPI - -* Purpose: -* Initialise a new XmlPI. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlPI( AstXmlPI *new, int type, const char *target, -* const char *text, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlPI -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* target -* Pointer to a null terminated string holding the PI target. -* text -* Pointer to a null terminated string holding the PI text. -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLPI, status ) ){ - astError( AST__INTER, "InitXmlPI: Supplied object type (%d) " - "does not represent an XmlPI", status, type ); - } - -/* Initialise the parent XmlObject component. */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Ensure we have non-NULL pointers. */ - if( !target ) target = ""; - if( !text ) text = ""; - -/* Initialise the items specific to this class of structure. Report an error - if anything is illegal. */ - new->target = NULL; - new->text = NULL; - - if( !Ustrcmp( target, "XML", status ) && astOK ) { - astError( AST__XMLPT, "InitXmlPI(xml): Illegal XML PI target \"%s\"" - " supplied.", status, target ); - } else { - new->target = astStore( NULL, target, strlen( target ) + 1 ); - new->text = astStore( NULL, text, strlen( text ) + 1 ); - } -} - -static void InitXmlPrologue( AstXmlPrologue *new, int type, int *status ){ -/* -* Name: -* InitXmlPrologue - -* Purpose: -* Initialise a new XmlPrologue. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* InitXmlPrologue( AstXmlPrologue *new, int type, int *status ) - -* Description: -* This function initialises supplied memory to hold an XmlPrologue -* structure. - -* Parameters: -* new -* The memory in which to initialise the structure. -* type -* An identifier for the structure type. -* status -* Pointer to the inherited status variable. -*/ - -/* Check the global error status. */ - if( !astOK ) return; - -/* Check the supplied object type is appropriate for the class of - structure being initialised. If not report an error. */ - if( !CheckType( type, AST__XMLPRO, status ) ){ - astError( AST__INTER, "InitXmlPrologue: Supplied object type (%d) " - "does not represent an XmlPrologue", status, type ); - } - -/* Initialise the parent XmlObject */ - InitXmlObject( (AstXmlObject *) new, type, status ); - -/* Initialise the items specific to this class of structure. */ - new->xmldecl = NULL; - new->misc1 = NULL; - new->nmisc1 = 0; - new->dtdec = NULL; - new->misc2 = NULL; - new->nmisc2 = 0; -} - -static int MatchName( AstXmlElement *this, const char *name, int *status ){ -/* -* Name: -* MatchName - -* Purpose: -* Check that an element has a specified name and/or prefix. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* int MatchName( AstXmlElement *this, const char *name, int *status ) - -* Description: -* This function checks that an element has a specified name and/or prefix. - -* Parameters: -* this -* The XmlElement to check. -* name -* The name for the element (may include a namespace prefix). -* status -* Pointer to the inherited status variable. - -* Returned Value: -* One if the supplied element has the supplie dname/prefix. Zero -* otherwise. - -*/ - - -/* Local Variables: */ - const char *colon; /* Pointer to colon within supplied name */ - char *newname; /* Pointer to name string (no prefix) */ - char *newpref; /* Pointer to name string */ - int nc; /* Length of prefix string */ - int result; /* Returned value */ - -/* Initialise */ - result = 0; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* Extract any prefix from the start of the supplied name. */ - newpref = NULL; - newname = (char *) name; - colon = strchr( name, ':' ); - if( colon ) { - nc = colon - name; - newpref = astStore( NULL, name, nc + 1 ); - newpref[ nc ] = 0; - - nc = strlen( name ) - ( colon - name ) - 1; - newname = astStore( NULL, colon + 1, nc + 1 ); - newname[ nc ] = 0; - } - -/* Compare the prefix. */ - if( newpref && this->prefix ) { - result = !strcmp( newpref, this->prefix ); - - } else if( !newpref && !this->prefix ) { - result = 1; - - } else { - result = 0; - } - -/* If the prefixes matches, compare the names */ - if( result ) { - if( newname && this->name ) { - result = !strcmp( newname, this->name ); - - } else if( !newname && !this->name ) { - result = 1; - - } else { - result = 0; - } - } - -/* Free any name and prefix extracted from the supplied name string */ - if( colon ) { - newname = astFree( newname ); - newpref = astFree( newpref ); - } - -/* Return the result. */ - return result; -} - -static AstXmlAttribute *NewAttribute( const char *name, const char *value, - const char *prefix, int *status ){ -/* -* Name: -* NewAttribute - -* Purpose: -* Create a new XmlAttribute. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* AstXmlAttribute *NewAttribute( const char *name, const char *value, -* const char *prefix, int *status ) - -* Description: -* This function creates a new XmlAttribute structure representing an -* XML attribute with the given name, value and namespace prefix. - -* Parameters: -* name -* Pointer to a null terminated string containing the attribute name. -* value -* Pointer to a null terminated string containing the attribute value. -* prefix -* Pointer to a null terminated string containing the attribute -* namespace prefix (may be NULL or blank). -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A pointer to the new structure is returned. - -* Notes: -* - A NULL pointer is returned if the inherited status value -* indicates an error has occurred on entry, or if this function -* should fail for any reason. -*/ - -/* Local Variables: */ - AstXmlAttribute *new; /* The returned pointer */ - -/* Initialise */ - new = NULL; - -/* Check the global error status. */ - if( !astOK ) return new; - -/* Allocate space for the new structure. */ - new = (AstXmlAttribute *) astMalloc( sizeof( AstXmlAttribute ) ); - -/* Initialise it. */ - InitXmlAttribute( new, AST__XMLATTR, name, value, prefix, status ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) new = astXmlDelete( new ); - -/* Return the result. */ - return new; - -} - -static AstXmlDocument *NewDocument( int *status ){ -/* -* Name: -* NewDocument - -* Purpose: -* Create a new empty XmlDocument. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* AstXmlDocument *NewDocument( int *status ) - -* Description: -* This function creates a new empty XmlDocument structure representing -* an entire XML Document. - -* Parameters: -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A pointer to the new structure is returned. - -* Notes: -* - A NULL pointer is returned if the inherited status value -* indicates an error has occurred on entry, or if this function -* should fail for any reason. -*/ - -/* Local Variables: */ - AstXmlDocument *new; /* The returned pointer */ - -/* Initialise */ - new = NULL; - -/* Check the global error status. */ - if( !astOK ) return new; - -/* Allocate space for the new structure. */ - new = (AstXmlDocument *) astMalloc( sizeof( AstXmlDocument ) ); - -/* Initialise it. */ - InitXmlDocument( new, AST__XMLDOC, status ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) new = astXmlDelete( new ); - -/* Return the result. */ - return new; - -} - -static AstXmlNamespace *NewNamespace( const char *prefix, const char *uri, int *status ){ -/* -* Name: -* NewNamespace - -* Purpose: -* Create a new XmlNamespace. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* AstXmlNamespace *NewNamespace( const char *prefix, -* const char *uri, int *status ) - -* Description: -* This function creates a new XmlNamespace structure representing an -* XML namespace with the given prefix and uri. - -* Parameters: -* prefix -* Pointer to a null terminated string containing the namespace prefix. -* uri -* Pointer to a null terminated string containing the associated URI. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A pointer to the new structure is returned. - -* Notes: -* - A NULL pointer is returned if the inherited status value -* indicates an error has occurred on entry, or if this function -* should fail for any reason. -*/ - -/* Local Variables: */ - AstXmlNamespace *new; /* The returned pointer */ - -/* Initialise */ - new = NULL; - -/* Check the global error status. */ - if( !astOK ) return new; - -/* Allocate space for the new structure. */ - new = (AstXmlNamespace *) astMalloc( sizeof( AstXmlNamespace ) ); - -/* Initialise it. */ - InitXmlNamespace( new, AST__XMLNAME, prefix, uri, status ); - -/* If an error occurred, delete the new structure. */ - if( !astOK ) new = astXmlDelete( new ); - -/* Return the result. */ - return new; - -} - -static AstXmlPrologue *NewPrologue( AstXmlDocument *doc, int *status ){ -/* -* Name: -* NewPrologue - -* Purpose: -* Create a new empty XmlPrologue. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* AstXmlPrologue *NewPrologue( AstXmlDocument *doc, int *status ) - -* Description: -* This function creates a new empty XmlPrologue structure representing -* an entire prologue. - -* Parameters: -* doc -* A pointer to the XmlDocument to add the XmlPrologue to, or NULL. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A pointer to the new structure is returned. - -* Notes: -* - A NULL pointer is returned if the inherited status value -* indicates an error has occurred on entry, or if this function -* should fail for any reason. -*/ - -/* Local Variables: */ - AstXmlPrologue *new; /* The returned pointer */ - -/* Initialise */ - new = NULL; - -/* Check the global error status. */ - if( !astOK ) return new; - -/* Allocate space for the new structure. */ - new = (AstXmlPrologue *) astMalloc( sizeof( AstXmlPrologue ) ); - -/* Initialise it. */ - InitXmlPrologue( new, AST__XMLPRO, status ); - -/* Set its parent. */ - ((AstXmlObject *) new )->parent = (AstXmlParent *) doc; - -/* If an error occurred, delete the new structure. */ - if( !astOK ) new = astXmlDelete( new ); - -/* Return the result. */ - return new; - -} - -static char *RemoveEscapes( const char *text, int *status ){ -/* -* Name: -* RemoveEscapes - -* Purpose: -* Replaces entity references by corresponding ascii characters. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* char *RemoveEscapes( const char *text, int *status ) - -* Description: -* This function produces a dynamic copy of the supplied text in which -* occurrences of XML entity references are replaced by the corresponding -* ASCII text. - -* Parameters: -* text -* A pointer to a text string. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A pointer to a dynamically allocated string containing the required -* copy. - -* Notes: -* - NULL is returned if this function is called with the global error -* status set, or if it should fail for any reason. -*/ - -/* Local Variables: */ - char *d; /* Pointer to next returned character */ - char *result; /* Returned pointer */ - char rc; /* Replacement character */ - const char *c; /* Pointer to next supplied character */ - int nc; /* Number of characters to skip */ - -/* Initialise */ - result = NULL; - nc = 0; - -/* Return if the pointer is NULL or if an error has occurred. */ - if( !astOK || !text ) return result; - -/* Allocate memory to hold a copy of the supplied text. */ - result = astMalloc( strlen( text ) + 1 ); - -/* Check the pointer can be used safely. */ - if( astOK ) { - -/* Loop round every character in the supplied text. */ - c = text - 1; - d = result; - while( *(++c) ) { - -/* If this character marks the start of a entity reference, replace it by - the corresponding ascii character and shuffle the remaining text down. */ - if( !strncmp( c, "&", 5 ) ) { - rc = '&'; - nc= 4; - - } else if( !strncmp( c, "<", 4 ) ) { - rc = '<'; - nc= 3; - - } else if( !strncmp( c, ">", 4 ) ) { - rc = '>'; - nc= 3; - - } else if( !strncmp( c, "'", 6 ) ) { - rc = '\''; - nc= 5; - - } else if( !strncmp( c, """, 6 ) ) { - rc = '"'; - nc= 5; - - } else { - rc = 0; - } - - if( rc ) { - *(d++) = rc; - c += nc; - } else { - *(d++) = *c; - } - - } - -/* Terminate the returned string. */ - *d = 0; - -/* Reallocate the string to free up any unused space. */ - result = astRealloc( result, d - result + 1 ); - } - -/* Return the result. */ - return result; -} - -#ifdef DEBUG -static void RemoveObjectFromList( AstXmlObject *obj ){ -/* -* Name: -* RemoveObjectFromList - -* Purpose: -* Removes an XmlObject from a static list of all currently active XmlObjects. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* void RemoveObjectFromList( AstXmlObject *obj ) - -* Description: -* This function removes the supplied pointer from a static list of -* pointers, and decrements the number of elements in the list. This list -* holds pointers to all the XmlObjects which currently exist. If the -* supplied pointer is not found in the list, this function returns -* without action. - -* Parameters: -* this -* A pointer to the XmlObject. - -* Notes: -* - This function attempts to execute even if an error has already -* occurred. -*/ - -/* Local Variavles: */ - int i; - int ii; - -/* Locate the supplied pointer within the list of pointers to all - currently active XmlObjects. */ - ii = -1; - for( i = 0; i < nobj; i++ ){ - if( existing_objects[ i ]->id == obj->id ) { - ii = i; - break; - } - } - -/* Check the pointer was found. */ - if( ii != -1 ) { - -/* Shuffle all higher index pointers down one in the list in order to fill - the gap left by removing the supplied pointer. */ - for( ii++; ii < nobj; ii++ ){ - existing_objects[ ii - 1 ] = existing_objects[ ii ]; - } - -/* Decrement the number of pointers in the list. */ - nobj--; - -/* Nullify the pointer at the end of the list which is no longer used. */ - existing_objects[ nobj ] = NULL; - } -} -#endif - -static const char *ResolvePrefix( const char *prefix, AstXmlElement *elem, int *status ){ -/* -* Name: -* ResolvePrefix - -* Purpose: -* Find the URI associated with a namespace prefix. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* const char *ResolvePrefix( const char *prefix, AstXmlElement *elem, int *status) - -* Description: -* This function searches the namespaces defined within the supplied -* element for a prefix which matches the supplied prefix. If found, -* it returns a pointer to the URI string associated with the prefix. -* If not found, it calls this function recursively on the parent -* element. If there is no parent element, NULL is returned. - -* Parameters: -* prefix -* Pointer to a string holding the namespace prefix. -* elem -* The pointer to the XmlElement. -* status -* Pointer to the inherited status variable. - -* Returned Value: -* Pointer to a string holding the URI, or NULL if not found. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -*/ - -/* Local Variables: */ - AstXmlParent *parent; /* Parent object */ - AstXmlNamespace *ns; /* Next namespace */ - const char *result; /* Returned pointer */ - int i; /* Loop count */ - -/* Initialise */ - result = NULL; - -/* Check the global error status, and the supplied element. */ - if( !astOK || !elem ) return result; - -/* Loop round all the namespace definitions in the element. */ - for( i = 0; i < elem->nnspref; i++ ) { - ns = elem->nsprefs[ i ]; - -/* Compare the namespace prefix with the supplied prefix (case sensitive). - Store a pointer to the associated URI if they match, and leave the - loop. */ - if( !strcmp( ns->prefix, prefix ) ) { - result = ns->uri; - break; - } - } - -/* If no matching namespace was found, attempt to resolve the prefix - within the context of the parent element. */ - if( !result ) { - parent = ((AstXmlObject *) elem )->parent; - if( astXmlCheckType( parent, AST__XMLELEM ) ) { - result = ResolvePrefix( prefix, (AstXmlElement *) parent, status ); - } - } - -/* Return the result. */ - return result; -} - -static int Ustrcmp( const char *a, const char *b, int *status ){ -/* -* Name: -* Ustrncmp - -* Purpose: -* A case blind version of strcmp. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* int Ustrcmp( const char *a, const char *b ) - -* Description: -* Returns 0 if there are no differences between the two strings, and 1 -* otherwise. Comparisons are case blind. - -* Parameters: -* a -* Pointer to first string. -* b -* Pointer to second string. - -* Returned Value: -* Zero if the strings match, otherwise one. - -* Notes: -* - This function does not consider the sign of the difference between -* the two strings, whereas "strcmp" does. -* - This function attempts to execute even if an error has occurred. - -*/ - -/* Local Variables: */ - const char *aa; /* Pointer to next "a" character */ - const char *bb; /* Pointer to next "b" character */ - int ret; /* Returned value */ - -/* Initialise the returned value to indicate that the strings match. */ - ret = 0; - -/* Initialise pointers to the start of each string. */ - aa = a; - bb = b; - -/* Loop round each character. */ - while( 1 ){ - -/* We leave the loop if either of the strings has been exhausted. */ - if( !(*aa ) || !(*bb) ){ - -/* If one of the strings has not been exhausted, indicate that the - strings are different. */ - if( *aa || *bb ) ret = 1; - -/* Break out of the loop. */ - break; - -/* If neither string has been exhausted, convert the next characters to - upper case and compare them, incrementing the pointers to the next - characters at the same time. If they are different, break out of the - loop. */ - } else { - - if( toupper( (int) *(aa++) ) != toupper( (int) *(bb++) ) ){ - ret = 1; - break; - } - - } - - } - -/* Return the result. */ - return ret; - -} - -#ifdef DEBUG -int astXmlTrace( int show ){ -/* -*+ -* Name: -* astXmlTrace - -* Purpose: -* List details of XML objects currently in existence. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* int astXmlTrace( int show ) - -* Description: -* Lists details of XML objects currently in existence. Details are -* written to standard output. - -* Parameters: -* show -* - 0, the ID values of all currently active XmlObjects are -* listed. The objects themselves are unchanged. -* - 1, each object is displayed using astXmlShow unless it has -* already been included in the display of a previous object, and then -* annulled. Consequently, this mode is destructive, and none of the -* displayed XmlObjects will be acessable afterwards. -* - 2, each object is displayed using astXmlShow whether or not it -* has already been included in the display of a previous object. -* The objects are left unchanged. -* - 3, nothing is written to standard output, but the number of -* active XmlObjects is still returned. - -* Returned Value: -* The number of XMLObjects which are in existence on entry to this -* function. - -*- -*/ - -/* Local Variables: */ - AstXmlObject *root; - int i, result, old_status; - - old_status = astStatus; - astClearStatus; - - result = nobj; - - if( show == 0 ) { - printf( "Current list of active XmlObject identifiers: " ); - for( i = 0; i < nobj; i++ ) printf( "%d ", existing_objects[ i ]->id ); - printf("\n"); - - } else if( show ==1 ){ - while( nobj > 0 ) { - root = astXmlGetRoot( existing_objects[0] ); - printf( "ID = %d (type %ld)\n%s\n------------\n", - root->id, root->type, astXmlShow( root ) ); - root = astXmlAnnulTree( root ); - } - - } else if( show == 2 ) { - for( i = 0; i < nobj; i++ ) printf( "%d\n%s\n------------\n", - existing_objects[ i ]->id, - astXmlShow(existing_objects[ i ]) ); - printf("\n"); - } - - astSetStatus( old_status ); - - return result; -} -#endif - -AstXmlElement *astXmlReadDocument_( AstXmlDocument **doc, - int (*is_wanted)( AstXmlElement *, int * ), - int skip, char (*source)( void *, int * ), - void *data, int *status ){ -/* -*+ -* Name: -* astXmlReadDocument - -* Purpose: -* Read and parse an XML document. - -* Type: -* Protected function. - -* Synopsis: -* #include "xml.h" -* AstXmlElement *astXmlReadDocument( AstXmlDocument **doc, -* int (*is_wanted)( AstXmlElement *, int * ), -* int skip, char (*source)( void *, int * ), -* void *data ) - -* Description: -* This function reads and parses text from an XML source. The text is -* obtained by calling the supplied "source" function, which returns -* the next character read from the external source on each invocation. -* -* The reading scheme combines elements of the SAX and DOM schemes in -* an attempt to minimise memory requirements (a potential problem with -* DOM) whilst retaining a simple interface for accessing the XML -* elements of interest to the client (a potential problem for SAX). -* -* When an element start tag is encountered in the source, the client -* is asked to indicate whether the element is of interest. This is -* done by calling the supplied "is_wanted" function. If the client -* indicates that the element is of interest, its contents are read -* and a pointer to a corresponding XmlElement structure is returned. -* Reading stops when the element has been read. If the client -* indicates that the element is not of interest, then (if "skip" is -* non-zero) the contents of the element are skipped over, and reading -* continues following the element end tag. When the next element is -* encountered the client will again be asked to indicate its interest -* in the element. This continues until either the client indicates that -* an element is of interest, or the end of the source is reached. If -* "skip" is zero, then an error is reported if the first element in -* the document is not of interest. -* -* The client has an option to reply that an element is not itself of -* interest, but may possibly contain interesting elements. In this case, -* the sub-elements within the element are read and checked in the same -* way. -* -* This function returns, and no more characters are read from the -* source, once the contents of the first "interesting" element has been -* read. -* -* The function thus returns a pointer to an XmlElement containing the -* entire contents of the first interesting element encountered in the -* source. This function can then be invoked again to read further -* interesting elements from the source. In this case, the XmlDocument -* structure created by the initial invocation (see parameter "doc") -* must be supplied, as this indicates the point in the total document -* structure at which the previous "interesting" element was located. - -* Parameters: -* doc -* Address of a location holding a pointer to an AstXmlDocument -* structure. The AstXmlDocument pointer should be supplied as NULL -* when invoking this function for the first time on a document -* source (i.e. when reading from the beginning of the document). -* In this case a new AstXmlDocument structure will be created and a -* pointer to it stored at the supplied address. This structure -* holds the context which enables subsequent invocations of this -* function to determine the point in the document structure at -* which to store any further text read from the source. It also -* holds the document prologue, root element, and epilogue. -* is_wanted -* Pointer to a function which is called to decide if the client is -* interested in each element start tag which has just been read. -* It has a single argument which is a pointer to the (empty) XmlElement -* corresponding to the element start tag which has just been read. -* It returns an integer: -* -1 : the element is not itself of interest but it may contain -* an interesting element, so look through the content and -* ask the client again about any elements found inside it. -* 0 : the element definately contains nothing of interest to -* the client. kip its content and continue looking for new -* elements. -* 1 : the element is definately of interest to the client so -* read its contents and return a pointer to it. -* If NULL is supplied, a value of "+1" is assumed. -* skip -* Indicates if any uninteresting elements may proceed the first -* element of interest. If zero, then an error is reported if the -* first element read from the source is not of interest to the client. -* If non-zero, then any uninteresting elements are simply skipped -* over until an interesting element is found or the document ends. -* source -* Pointer to a function which is called to return the next -* character from the source. It has a single argument which is -* used to pass any supplied data to it. It should return zero when -* the end of the source is reached. -* data -* Pointer to a structure to pass to the source function. This -* structure may contain any data needed by the source function. - -* Returned Value: -* A pointer to the first element of interest, or NULL if there are no -* interesting elements in the source. The returned element will be a -* descendant of "*doc". For this reason, the returned pointer need not -* be annulled explicitly since it will be freed when the XmlDocument -* is annulled. However, if required (e.g. to save memory) it may be -* annulled before the document is annulled by using astXmlRemoveItem to -* remove it from its parent, and then using astXmlAnnul to annul it. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -* - It is assumed that the read commences outside any tag (i.e. -* in between tags or within character data). -*- -*/ - -/* Local Variables: */ - AstXmlElement *result; - -/* Check any supplied pointer is for an XmlDocument. */ - astXmlCheckDocument( *doc, 1 ); - -/* Read and parse the source text. Indicate that the element being read - *may* contain items of interest to the client. Surround with a mutex - since the supplied functions may not be thread-safe. */ - LOCK_MUTEX1; - result = ReadContent( doc, -1, is_wanted, skip, source, data, 0, status ); - UNLOCK_MUTEX1; - -/* Return the result. */ - return result; -} - - -static AstXmlElement *ReadContent( AstXmlDocument **doc, int wanted, - int (*is_wanted)( AstXmlElement *, int * ), - int skip, char (*source)( void *, int * ), - void *data, int depth, int *status ){ -/* -* Name: -* ReadContent - -* Purpose: -* Read and parse an XML document. - -* Type: -* Private function. - -* Synopsis: -* #include "xml.h" -* AstXmlElement *ReadContent( AstXmlDocument **doc, int wanted, -* int (*is_wanted)( AstXmlElement *, int * ), -* int skip, char (*source)( void *, int * ), -* void *data, int depth, int *status ) - -* Description: -* This function reads and parses text from an XML source. The text is -* obtained by calling the supplied "source" function, which returns -* the next character read from the external source on each invocation. -* -* See astXmlReadDocument for more details. - -* Parameters: -* doc -* Address of a location holding a pointer to an AstXmlDocument -* structure. The AstXmlDocument pointer should be supplied as NULL -* when invoking this function for the first time on a document -* source (i.e. when reading from the beginning of the document). -* In this case a new AstXmlDocument structure will be created and a -* pointer to it stored at the supplied address. This structure -* holds the context which enables subsequent invocations of this -* function to determine the point in the document structure at -* which to store any further text read from the source. It also -* holds the document prologue, root element, and epilogue. -* wanted -* Indicates if the content read from the XML source is of interest -* to the client. If a positive value is supplied, all content read -* from the source (up to the end tag which corresponds to the -* supplied "parent") is added to the "parent" element (if supplied). -* If zero is supplied, then all content read from the source is -* discarded. If a negative value is supplied, then all content up -* to the first element start tag is discarded. When the first -* element start tag is encountered, it is passed back to the client -* by invoking the supplied "is_wanted" function. If this function -* returns a non-zero value, then the contents of the new element -* is read (by calling this function recursively) and a pointer to -* the new element is returned as the function value (reading then -* stops and the function returns). If the "is_wanted" function returns -* zero, then the contents of the new element is skipped over, and -* reading continues until the next element start tag is encountered, -* when the "is_wanted" function is again invoked. -* is_wanted -* Pointer to a function which is called to decide if the client is -* interested in the element start tag which has just been read. -* It has a single argument which is a pointer to the (empty) XmlElement -* corresponding to the element start tag which has just been read. -* It returns an integer: -* -1 : the element is not itself of interest but it may contain -* an interesting element, so look through the content and -* ask the client again about any elements found inside it. -* 0 : the element definately contains nothing of interest to -* the client. kip its content and continue looking for new -* elements. -* 1 : the element is definately of interest to the client so -* read its contents and return a pointer to it. -* If NULL is supplied, a value of "+1" is assumed. -* skip -* Indicates if any uninteresting elements may proceed the first -* element of interest. If zero, then an error is reported if the -* first element read from the source is not of interest to the client. -* If non-zero, then any uninteresting elements are simply skipped -* over until an interesting element is found or the document ends. -* source -* Pointer to a function which is called to return the next -* character from the source. It has a single argument which is -* used to pass any supplied data to it. It should return zero when -* the end of the source is reached. -* data -* Pointer to a structure to pass to the source function. This -* structure may contain any data needed by the source function. -* depth -* Depth of nesting (i.e. zero if this function was invoked from -* astXmlReadDocument, and a positive value if it was invoked -* recursively from within itself). -* status -* Pointer to the inherited status variable. - -* Returned Value: -* A pointer to the first element of interest, or NULL if there are no -* interesting elements in the source. If the first element of -* interest has already been found (as indicated by "wanted" being +1) -* then NULL is returned. The returned element may be a child of a -* parent element containing namespace definitions (which may itself -* have a parent, etc). For this reason, the returned pointer should be -* freed using astXmlAnnulTree rather than astXmlAnnul. - -* Notes: -* - NULL is returned if an error has already occurred, or if this -* function should fail for any reason. -* - It is assumed that the read commences outside any tag (i.e. -* in between tags or within character data). -*/ - -/* Local Variables; */ - AstXmlElement *answer; /* Result of reading a sub-element */ - AstXmlElement *parent; /* Pointer to current parent element */ - AstXmlElement *elem; /* A new element to be read */ - AstXmlElement *result; /* The returned pointer */ - char *cc; /* Pointer to next character */ - char *msg; /* Pointer to message buffer */ - char *text1; /* Pointer to dynamic string */ - char *text2; /* Pointer to another dynamic string */ - char *text3; /* Pointer to another dynamic string */ - char *text4; /* Pointer to another dynamic string */ - char c; /* Current character read from source */ - char lc2; /* Last but one character read */ - char lc; /* Last character read */ - char quoted; /* Character which opened current quote */ - int nc1; /* No. of characters stored in text1 */ - int nc2; /* No. of characters stored in text2 */ - int nc3; /* No. of characters stored in text2 */ - int ncmsg; /* Length of "msg" */ - int newwanted; /* Is the new element wanted? */ - int state; /* Current action being performed */ - int prolog_ok; /* OK for source to start with a prolog? */ - int where; /* Where to add the item within the document */ - -/* Initialise */ - result = NULL; - elem = NULL; - -/* Check the global error status. */ - if( !astOK ) return result; - -/* If no XmlDocument was supplied, assume we are commencing to read a new - document from the begining. Create a new XmlDocument to store the - prologue, root element and epilogue, together with a pointer to the - "current" element, i.e. the element whose content is currently being - read. Also, since we have not yet asked the client if it is interested - in anything, ignore the supplied "wanted" value and use -1 to ensure - that we ask the client when the first element start tag is encountered. */ - if( !*doc ){ - prolog_ok = 1; - *doc = NewDocument( status ); - wanted = -1; - } else { - prolog_ok = 0; - } - -/* Any content read from the source (except for prologue and epilogue) - will be placed into the "parent" element. A pointer to this element is - stored in the XmlDocument structure. The parent element will always be - a descendant of the root element, or the root element itself. */ - parent = (*doc)->current; - -/* If the supplied parent has already been completed (typically because - it was read from an empty element tag), then just return without - action. */ - if( parent && parent->complete ) { - -/* If an error has occurred, or if this invocation of ReadContent was - made recursively (rather than by the client), or if we have something - to return, return. */ - if( !astOK || depth > 0 || result ) { - return result; - -/* Otherwise, returning would result in returning a null pointer to the - client even though the end of the document may not have been reached. - Revert to state 0 and search for further interesting elements. */ - } else { - if( parent != (*doc)->root ) { - (*doc)->current = (AstXmlElement *) ( (AstXmlObject *) parent )->parent; - } else { - (*doc)->current = NULL; - } - parent = (*doc)->current; - state = 0; - } - } - -/* Initialise the previous two characters read. */ - lc = 0; - lc2 = 0; - -/* Initialise pointer to dynamically allocated strings. */ - text1 = NULL; - text2 = NULL; - text3 = NULL; - msg = NULL; - -/* We are not in a quote. */ - quoted = 0; - -/* Initialise the "state" variable which indicates what we are currently - looking for. */ - state = 0; - -/* Loop round reading characters from the source. */ - while( 1 ) { - c = (*source)( data, status ); - -/* Leave the loop if an error occurred whilst reading the character. */ - if( !astOK ) break; - -/* If a parent element has been supplied, (i.e. if we are currently - reading the content of an element), or if we are not in state zero, - report an error and leave the loop if the end of the text has been - reached. If no parent was supplied, just leave the loop. */ - if( !c ) { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): End of XML input text " - "reached whilst reading the content of element %s.", status, - astXmlGetTag( parent, 1 ) ); - - } else if( state > 1 ) { - if( msg ) { - astError( AST__XMLWF, "astRead(XmlChan): End of XML input text " - "reached whilst reading the document epilogue " - "(\"%s\").", status, msg ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): End of XML input text " - "reached whilst reading the document epilogue." , status); - } - } - break; - } - -/* Save text which is not character data for use in error messages. */ - if( state < 2 ) { - if( msg ) msg = astFree( msg ); - } else { - msg = AppendChar( msg, &ncmsg, c, status ); - } - -/* State 0: Use the first character to decide what sort of content item - follows (character data or a tag of some form). */ - if( state == 0 ) { - if( c != '<' ) { - state = 1; - text1 = AppendChar( text1, &nc1, c, status ); - } else { - msg = AppendChar( msg, &ncmsg, '<', status ); - state = 2; - } - -/* State 1: We are reading character data. The character data ends at the - first occurrence of "<", at which point the character data is added to - the parent if required and we continue to state 2.*/ - } else if( state == 1 ) { - if( c != '<' ) { - text1 = AppendChar( text1, &nc1, c, status ); - } else { - msg = AppendChar( msg, &ncmsg, '<', status ); - if( text1 ){ - -/* If we have a parent element, just add it to the element. */ - if( parent ) { - if( wanted > 0 ) { - text4 = RemoveEscapes( text1, status ); - astXmlAddCharData( (AstXmlParent *) parent, 0, text4 ); - text4 = astFree( text4 ); - - -/* If we are not allowed to skip over non-blank content, report an - error if the text is not blank. */ - } else if( !skip ) { - cc = text1 - 1; - while( *(++cc) ) { - if( !isspace( *cc ) ) { - if( parent ) { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data \"%s\" within element %s.", status, - text1, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data: \"%s\".", status, text1 ); - } - break; - } - } - } - -/* Otherwise, add it to the document prologue or epilogue. */ - } else { - if( (*doc)->root ) { - where = 3; - } else if( (*doc)->prolog && (*doc)->prolog->dtdec ){ - where = 2; - } else { - where = 1; - } - - text4 = RemoveEscapes( text1, status ); - astXmlAddCharData( (AstXmlParent *) *doc, where, text4 ); - text4 = astFree( text4 ); - } - - text1 = astFree( text1 ); - } - state = 2; - } - -/* State 2: We are using the character following a "<" to determine what - type of tag is commencing. */ - } else if( state == 2 ) { - -/* If the character is a ">", report an error. */ - if( c == '>' ) { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"<>\" " - "encountered within element %s.", status, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"<>\" " - "encountered." , status); - } - break; - -/* If the character is a "?", this must be a PI tag. */ - } else if( c == '?' ) { - state = 3; - -/* If the character is a "!", it must be a comment or a CDATA section - or a DTD. */ - } else if( c == '!' ) { - state = 4; - -/* If the character is a "/", it must be an element end tag. */ - } else if( c == '/' ) { - state = 5; - -/* Otherwise, this must be an element start tag. Append the character - to "text1". */ - } else { - state = 6; - text1 = AppendChar( text1, &nc1, c, status ); - } - -/* State 3: We are reading the initial text following the opening "<?" string - of a PI tag. The characters between the initial "<?" string and the first - space or closing "?>" string is the target text. */ - } else if( state == 3 ) { - if( c == '>' && lc == '?' ) { - if( text1 ) text1[ --nc1 ] = 0; - state = 100; - } else if( isspace( c ) ) { - state = 7; - } else { - text1 = AppendChar( text1, &nc1, c, status ); - } - -/* State 4: We are using the characters following the opening "<!" text to - determine if the tag is a comment, DTD or CDATA section. */ - } else if( state == 4 ) { - if( c == '-' ) { - state = 8; - } else if( c == 'D' ){ - state = 16; - text1 = astAppendString( text1, &nc1, "<!D" ); - } else if( c == '[' ){ - state = 9; - text1 = astAppendString( text1, &nc1, "<![" ); - } else { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"<!%c...\" encountered within " - "element %s.", status, c, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"<!%c...\" encountered.", status, c ); - } - break; - } - -/* State 5: We are looking for the end of an element end tag. */ - } else if( state == 5 ) { - if( c == '>' ) { - state = 101; - } else { - text1 = AppendChar( text1, &nc1, c, status ); - } - -/* State 6: We are looking for the (prefix:)name combination at the start of - an element start tag. */ - } else if( state == 6 ) { - if( c == '>' ) { - state = ( lc != '/' ) ? 102 : 103; - } else if( isspace( c ) ) { - state = 104; - } else if( c != '/' ){ - text1 = AppendChar( text1, &nc1, c, status ); - } - -/* State 7: We are reading the remaining text in a PI tag following the target - text. */ - } else if( state == 7 ) { - if( c == '>' && lc == '?' ) { - if( text2 ) text2[ --nc2 ] = 0; - state = 100; - } else if( text2 || !isspace( c ) ) { - text2 = AppendChar( text2, &nc2, c, status ); - } - -/* State 8: We are looking for the start of the text within a comment tag. */ - } else if( state == 8 ) { - if( c == '-' ) { - state = 10; - } else { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"<!-%c...\" encountered within " - "element %s.", status, c, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"<!-%c...\" encountered.", status, c ); - } - break; - } - -/* State 9: We are looking for the start of the text within a CDATA tag. */ - } else if( state == 9 ) { - if( c == '[' ) { - if( !strcmp( text1, "<![CDATA" ) ) { - state = 11; - text1 = astFree( text1 ); - } else { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"%s%c...\" encountered within " - "element %s.", status, text1, c, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"%s%c...\" encountered.", status, text1, c ); - } - text1 = astFree( text1 ); - break; - } - - } else if( nc1 < 10 ) { - text1 = AppendChar( text1, &nc1, c, status ); - - } else { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"%s%c...\" encountered within " - "element %s.", status, text1, c, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"%s%c...\" encountered.", status, text1, c ); - } - text1 = astFree( text1 ); - break; - } - -/* State 10: We are reading the remaining text in a comment tag. When the end - ">" is reached, check the previous 2 characters are "--" and then terminate - the text1 string in order to remove these two characters from the comment - text. */ - } else if( state == 10 ) { - if( c == '>' && lc == '-' && lc2 == '-' ) { - text1[ nc1 - 2 ] = 0; - state = 105; - } else { - text1 = AppendChar( text1, &nc1, c, status ); - } - -/* State 11: We are reading the remaining text in a CDATA tag. */ - } else if( state == 11 ) { - if( c == '>' && lc == ']' && lc2 == ']' ) { - text1[ nc1 - 2 ] = 0; - state = 106; - } else { - text1 = AppendChar( text1, &nc1, c, status ); - } - -/* State 12: We are looking for an equals sign marking the end of an - attribute name within an element start tag. */ - } else if( state == 12 ) { - if( c == '=' ) { - state = 13; - - } else if( c == '>' ) { - if( text1 ) { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - " \"%s...\" encountered within element %s.", status, msg, - astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s...\" " - "encountered.", status, msg ); - } - break; - } else { - if( lc == '/' ) { - state = 108; - } else { - state = 200; - } - } - - } else if( text1 || !isspace( c ) ) { - if( c != '/' ) text1 = AppendChar( text1, &nc1, c, status ); - } - -/* State 13: We are looking for a '"' or ''' marking the start of an attribute - value within an element start tag. */ - } else if( state == 13 ) { - if( c == '"' ) { - state = 14; - - } else if( c == '\'' ) { - state = 15; - - } else if( c == '>' ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal value for attribute " - "\"%s\" in XML tag \"%s...\".", status, text1, msg ); - break; - } - -/* State 14: We are looking for a '"' marking the end of an attribute value - within an element start tag. */ - } else if( state == 14 ) { - if( c == '"' ) { - state = 107; - - } else if( c == '>' ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal value for attribute " - "\"%s\" in XML tag \"%s...\".", status, text1, msg ); - break; - - } else { - text2 = AppendChar( text2, &nc2, c, status ); - } - -/* State 15: We are looking for a ''' marking the end of an attribute value - within an element start tag. */ - } else if( state == 15 ) { - if( c == '\'' ) { - state = 107; - - } else if( c == '>' ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal value for attribute " - "\"%s\" in XML tag \"%s...\".", status, text1, msg ); - break; - - } else { - text2 = AppendChar( text2, &nc2, c, status ); - } - -/* State 16: We are looking for the end of a DOCTYPE string. */ - } else if( state == 16 ) { - if( isspace( c ) ) { - if( !strcmp( text1, "<!DOCTYPE" ) ) { - state = 17; - text1 = astFree( text1 ); - } else { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"%s%c...\" encountered within " - "element %s.", status, text1, c, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"%s%c...\" encountered.", status, text1, c ); - } - text1 = astFree( text1 ); - break; - } - - } else if( nc1 < 15 ) { - text1 = AppendChar( text1, &nc1, c, status ); - - } else { - if( parent ) { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"%s%c...\" encountered within " - "element %s.", status, text1, c, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag " - "starting with \"%s%c...\" encountered.", status, text1, c ); - } - text1 = astFree( text1 ); - break; - } - -/* State 17: We are looking for the start of a DOCTYPE name string. */ - } else if( state == 17 ) { - if( !isspace( c ) ) { - text1 = AppendChar( text1, &nc1, c, status ); - state = 18; - } - -/* State 18: We are looking for the end of a DOCTYPE name string. */ - } else if( state == 18 ) { - if( isspace( c ) ) { - state = 19; - } else if( c == '>' ) { - state = 109; - } else { - text1 = AppendChar( text1, &nc1, c, status ); - } - -/* State 19: We are looking for the start of a string following a DOCTYPE - name string. */ - } else if( state == 19 ) { - if( !isspace( c ) ) { - if( c == '[' ) { - state = 20; - } else if( c == '>' ) { - state = 109; - } else { - state = 21; - text2 = AppendChar( text2, &nc2, c, status ); - } - } - -/* State 20: We are looking for the "]" marking the end of the internal - markup of a DOCTYPE element. Avoid the contents of quoted strings (such - as #FIXED attribute values). */ - } else if( state == 20 ) { - text3 = AppendChar( text3, &nc3, c, status ); - if( c == '\'' ) { - if( quoted == '\'' ) { - quoted = 0; - } else if( !quoted ) { - quoted = '\''; - } - - } else if( c == '"' ) { - if( quoted == '"' ) { - quoted = 0; - } else if( !quoted ) { - quoted = '"'; - } - - } else if( !quoted && c == ']' ) { - text3[ --nc3 ] = 0; - state = 22; - } - -/* State 21: We are looking for the start of a DOCTYPE internal section. */ - } else if( state == 21 ) { - if( c == '[' ) { - state = 20; - } else if( c == '>' ) { - state = 109; - } else { - text2 = AppendChar( text2, &nc2, c, status ); - } - -/* State 22: We are looking for the ">" at the end of a DOCTYPE. */ - } else if( state == 22 ) { - if( !isspace( c ) ) { - if( c == '>' ) { - state = 109; - } else { - astError( AST__XMLWF, "astRead(XmlChan): Extra text found " - "at end of XML DOCTYPE tag \"%s\".", status, msg ); - } - } - - } else { - astError( AST__INTER, "ReadContent(xml): Illegal state (%d) encountered " - "(AST internal programming error).", status, state ); - } - -/* The following states perform actions consequent on the decisons made - above, but which must be performed before reading the next character. */ - -/* In most cases there will be no actions to perform. Therefore check for - this first (to avoid the time spent doing all the following usually - irrelevant checks). */ - if( state < 23 ) { - -/* State 100: We have just reached the end of a PI tag. Create a new XmlPI and - store it in the parent (if required). */ - } else if( state == 100 ) { - if( text1 ){ - -/* First deal with XML declaration PI's. These must be the first item in - the source. */ - if( !strcmp( text1, "xml" ) ) { - if( (*doc)->root || (*doc)->prolog || (*doc)->nepi > 0 ) { - astError( AST__XMLWF, "astRead(XmlChan): An XML " - "declaration \"%s\" was encountered within the " - "body of the document.", status, msg ); - } else { - astXmlSetXmlDec( *doc, text2 ); - } - -/* Now deal with other PI's. */ - } else { - -/* If we have a parent element, just add it to the element. */ - if( parent ) { - if( wanted > 0 ) { - astXmlAddPI( (AstXmlParent *) parent, 0, text1, text2 ); - } else if( !skip ) { - if( parent ) { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data \"%s\" within element %s.", status, - msg, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data: \"%s\".", status, msg ); - } - break; - } - -/* Otherwise, add it to the document prologue or epilogue. */ - } else { - if( (*doc)->root ) { - where = 3; - } else if( (*doc)->prolog->dtdec ){ - where = 2; - } else { - where = 1; - } - astXmlAddPI( (AstXmlParent *) *doc, where, text1, text2 ); - - } - } - text1 = astFree( text1 ); - if( text2 ) text2 = astFree( text2 ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s\" " - "encountered.", status, msg ); - break; - } - state = 0; - -/* State 101: We have just reached the end of an element end tag. Check that - the (prefix:)name is legal, and matches that of the current parent, - re-instate the parent's parent as the current element in the document, - and leave the loop if appropriate. */ - } else if( state == 101 ) { - if( text1 ){ - CheckPrefName( text1, "element", "astRead(XmlChan)", status ); - if( parent ) { - if( MatchName( parent, text1, status ) ) { - parent->complete = 1; - if( parent != (*doc)->root ) { - (*doc)->current = (AstXmlElement *) ( (AstXmlObject *) parent )->parent; - } else { - (*doc)->current = NULL; - } - } else { - astError( AST__XMLWF, "astRead(XmlChan): Start tag \"%s\" " - "closed by end tag \"%s\".", status, astXmlGetTag( parent, 1 ), - msg ); - } - - } else { - (*doc)->current = NULL; - astError( AST__XMLWF, "astRead(XmlChan): Unmatched end tag " - "\"%s\" encountered.", status, msg ); - } - - text1 = astFree( text1 ); - - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s\" " - "encountered.", status, msg ); - } - -/* If an error has occurred, or if this invocation of ReadContent was - made recursively (rather tnan by the client), or if we have something - to return, break out of the loop. */ - if( !astOK || depth > 0 || result ) { - break; - -/* Otherwise, breaking would result in returning a null pointer to the - client even though the end of the document may not have been reached. - Revert to state 0 and search for further intersting elements. */ - } else { - parent = (*doc)->current; - state = 0; - } - -/* State 102: We have just got the (prefix:)name for an element start tag, and - the start tag contains no attributes, etc. Create a new XmlElement, adding - it to the supplied parent, and then proceed to state 200 to read the - content of the element. */ - } else if( state == 102 ) { - if( text1 ){ - elem = astXmlAddElement( parent, text1, NULL ); - text1 = astFree( text1 ); - state = 200; - - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s\" " - "encountered.", status, msg ); - break; - } - -/* State 103: We have just got the (prefix:)name for an empty element tag, and - the tag does not contain further attributes, etc. Create a new XmlElement - and store it in the container (if any). Indicate that there is no - content to read, and then go on to state 200. */ - } else if( state == 103 ) { - if( text1 ){ - elem = astXmlAddElement( parent, text1, NULL ); - elem->complete = 1; - text1 = astFree( text1 ); - state = 200; - - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s\" " - "encountered.", status, msg ); - break; - } - -/* State 104: We have just got the (prefix:)name for an element start tag, but - the start tag may contain further attributes, etc. Create a new XmlElement - and store it in the container (if any). Then go to state 12 in which we - look for further attributes, etc. */ - } else if( state == 104 ) { - if( text1 ){ - elem = astXmlAddElement( parent, text1, NULL ); - text1 = astFree( text1 ); - state = 12; - - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s\" " - "encountered.", status, msg ); - break; - } - -/* State 105: We have just reached the end of a comment tag. Create a new - XmlComment and store it in the parent. */ - } else if( state == 105 ) { - if( text1 ){ - -/* If we have a parent element, just add it to the element. */ - if( parent ) { - if( wanted > 0 ) { - astXmlAddComment( (AstXmlParent *) parent, 0, text1 ); - } else if( !skip ) { - if( parent ) { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data \"%s\" within element %s.", status, - msg, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data: \"%s\".", status, msg ); - } - break; - } - -/* Otherwise, add it to the document prologue or epilogue. */ - } else { - if( (*doc)->root ) { - where = 3; - } else if( (*doc)->prolog->dtdec ){ - where = 2; - } else { - where = 1; - } - astXmlAddComment( (AstXmlParent *) *doc, where, text1 ); - } - - text1 = astFree( text1 ); - - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s\" " - "encountered.", status, msg ); - break; - } - state = 0; - -/* State 106: We have just reached the end of a CDATA tag. Create a new - XmlCDATASection and store it in the container (if any). */ - } else if( state == 106 ) { - if( text1 ){ - if( parent && wanted > 0 ) { - astXmlAddCDataSection( parent, text1 ); - } else if( !skip ) { - if( parent ) { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data \"%s\" within element %s.", status, - msg, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data: \"%s\".", status, msg ); - } - break; - } - text1 = astFree( text1 ); - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s\" " - "encountered.", status, msg ); - break; - } - state = 0; - -/* State 107: We have just reached the end of an attribute or namespace - setting. Create a new object and store it in the element created - earlier. */ - } else if( state == 107 ) { - if( text1 ){ - if( !elem ) { - astError( AST__INTER, "ReadContent(xml): Container lost at state " - "107 (AST internal programming error).", status ); - break; - } - - if( !strcmp( text1, "xmlns" ) ) { - astXmlAddURI( elem, NULL, text2 ); - - } else if( !strncmp( text1, "xmlns:", 6 ) ) { - astXmlAddURI( elem, text1+6, text2 ); - - } else { - text4 = RemoveEscapes( text2, status ); - astXmlAddAttr( elem, text1, text4, NULL ); - text4 = astFree( text4 ); - } - - text1 = astFree( text1 ); - text2 = astFree( text2 ); - - } else { - astError( AST__XMLWF, "astRead(XmlChan): Illegal XML tag \"%s\" " - "encountered.", status, msg ); - break; - } - state = 12; - -/* State 108: We have just reached the end of an empty element tag to which - we have been adding attributes, etc. */ - } else if( state == 108 ) { - if( elem ) { - elem->complete = 1; - state = 200; - } else { - astError( AST__INTER, "Parse(xml): No container in state 108 " - "(AST internal programming error).", status ); - break; - } - -/* State 109: We have just reached the end of a DOCTYPE tag. */ - } else if( state == 109 ) { - - if( (*doc)->root ){ - astError( AST__XMLWF, "astRead(XmlChan): An DOCTYPE tag " - "\"%s\" was encountered within the body of the " - "document.", status, msg ); - break; - - } else if( (*doc)->prolog->dtdec ){ - astError( AST__XMLWF, "astRead(XmlChan): Multiple DOCTYPE tags " - "encountered." , status); - break; - - } else { - astXmlSetDTDec( *doc, text1, text2, text3 ); - text1 = astFree( text1 ); - text2 = astFree( text2 ); - text3 = astFree( text3 ); - state = 0; - } - - } else if( state != 200 ) { - astError( AST__INTER, "ReadContent(xml): Illegal state (%d) encountered " - "(AST internal programming error).", status, state ); - } - - - -/* State 200: We now have now read a complete element start tag and have - a corresponding XmlElement ("elem"), with all attributes and namespaces, - etc (but no content). Call the "is_wanted" function to see if the client - is interested in the element. */ - if( state == 200 ) { - -/* If this element is found at the root level of the document, store a - pointer to it as the root element. Report an error if there is already - a root element. */ - if( !parent ) { - if( (*doc)->root ){ - if( astOK ) { - astError( AST__XMLWF, "astRead(XmlChan): Multiple root " - "elements encountered." , status); - elem = astXmlDelete( elem ); - } - break; - } else { - (*doc)->root = elem; - ((AstXmlObject *) elem )->parent = (AstXmlParent *) (*doc); - } - } - -/* If we do not already know, ask the caller if it is interested in this new - element. If no "is_wanted" function was supplied, assume all elements - are interesting. */ - if( wanted == -1 ) { - newwanted = is_wanted ? (*is_wanted)( elem, status ) : 1; - } else { - newwanted = wanted; - } - -/* If it is not interested, report an error if skip is zero. */ - if( newwanted != 1 && !skip ) { - if( parent ) { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data \"%s\" within element %s.", status, - msg, astXmlGetTag( parent, 1 ) ); - } else { - astError( AST__BADIN, "astRead(XmlChan): Cannot interpret " - "the input data: \"%s\".", status, msg ); - } - break; - } - -/* Make the new element the "current" element in the document. */ - (*doc)->current = elem; - -/* Read the contents of the new element from the source. If the client is - interested in the element, the read contents will be added to the - element, otherwise they will be discarded after being read. */ - answer = ReadContent( doc, newwanted, is_wanted, skip, source, - data, depth + 1, status ); - -/* If the first interesting element was found inside "elem", then - return it. If "elem" is not interesting and did not contain anything - of interest, delete it and return the initialised NULL pointer. */ - if( newwanted < 0 ) { - if( answer ) { - result = answer; - } else { - elem = astXmlDelete( elem ); - } - -/* If the elem is of no interest, delete it and return the initialised - NULL pointer. */ - } else if( newwanted == 0 ) { - elem = astXmlDelete( elem ); - -/* Otherwise, "elem" itself is definitely of interest. If "elem" is - the first item of interest, return it. */ - } else if( wanted < 0 ) { - result = elem; - } - -/* If we have an answer to return, leave the loop, otherwise re-instate the - original current element in the document and continue to read any text - following the element. */ - if( result ) { - break; - } else { - (*doc)->current = parent; - state = 0; - } - - } if( state > 22 ) { - astError( AST__INTER, "ReadContent(xml): Illegal state (%d) encountered " - "(AST internal programming error).", status, state ); - } - -/* Remember the previous two character */ - lc2 = lc; - lc = c; - } - -/* Free any dynamic strings */ - text1 = astFree( text1 ); - text2 = astFree( text2 ); - text3 = astFree( text3 ); - if( msg ) msg = astFree( msg ); - -/* Delete the returned object if an error occurred. */ - if( !astOK ) result = astXmlDelete( result ); - -/* Return the result. */ - return result; -} - - - |