Merge commit '4464fd97bf7e813b5badf1937e59f6fb5d2be646' as 'libxml2'

1 files changed, 998 insertions, 0 deletions

diff --git a/libxml2/error.c b/libxml2/error.c
new file mode 100644
index 0000000..9606f13
--- /dev/null
+++ b/libxml2/error.c
@@ -0,0 +1,998 @@
+/*
+ * error.c: module displaying/handling XML parser errors
+ *
+ * See Copyright for the status of this software.
+ *
+ * Daniel Veillard <daniel@veillard.com>
+ */
+
+#define IN_LIBXML
+#include "libxml.h"
+
+#include <string.h>
+#include <stdarg.h>
+#include <libxml/parser.h>
+#include <libxml/xmlerror.h>
+#include <libxml/xmlmemory.h>
+#include <libxml/globals.h>
+
+void XMLCDECL xmlGenericErrorDefaultFunc	(void *ctx ATTRIBUTE_UNUSED,
+				 const char *msg,
+				 ...) LIBXML_ATTR_FORMAT(2,3);
+
+#define XML_GET_VAR_STR(msg, str) {				\
+    int       size, prev_size = -1;				\
+    int       chars;						\
+    char      *larger;						\
+    va_list   ap;						\
+								\
+    str = (char *) xmlMalloc(150);				\
+    if (str != NULL) {						\
+								\
+    size = 150;							\
+								\
+    while (size < 64000) {					\
+	va_start(ap, msg);					\
+	chars = vsnprintf(str, size, msg, ap);			\
+	va_end(ap);						\
+	if ((chars > -1) && (chars < size)) {			\
+	    if (prev_size == chars) {				\
+		break;						\
+	    } else {						\
+		prev_size = chars;				\
+	    }							\
+	}							\
+	if (chars > -1)						\
+	    size += chars + 1;					\
+	else							\
+	    size += 100;					\
+	if ((larger = (char *) xmlRealloc(str, size)) == NULL) {\
+	    break;						\
+	}							\
+	str = larger;						\
+    }}								\
+}
+
+/************************************************************************
+ *									*
+ *			Handling of out of context errors		*
+ *									*
+ ************************************************************************/
+
+/**
+ * xmlGenericErrorDefaultFunc:
+ * @ctx:  an error context
+ * @msg:  the message to display/transmit
+ * @...:  extra parameters for the message display
+ *
+ * Default handler for out of context error messages.
+ */
+void XMLCDECL
+xmlGenericErrorDefaultFunc(void *ctx ATTRIBUTE_UNUSED, const char *msg, ...) {
+    va_list args;
+
+    if (xmlGenericErrorContext == NULL)
+	xmlGenericErrorContext = (void *) stderr;
+
+    va_start(args, msg);
+    vfprintf((FILE *)xmlGenericErrorContext, msg, args);
+    va_end(args);
+}
+
+/**
+ * initGenericErrorDefaultFunc:
+ * @handler:  the handler
+ *
+ * Set or reset (if NULL) the default handler for generic errors
+ * to the builtin error function.
+ */
+void
+initGenericErrorDefaultFunc(xmlGenericErrorFunc * handler)
+{
+    if (handler == NULL)
+        xmlGenericError = xmlGenericErrorDefaultFunc;
+    else
+        xmlGenericError = (*handler);
+}
+
+/**
+ * xmlSetGenericErrorFunc:
+ * @ctx:  the new error handling context
+ * @handler:  the new handler function
+ *
+ * Function to reset the handler and the error context for out of
+ * context error messages.
+ * This simply means that @handler will be called for subsequent
+ * error messages while not parsing nor validating. And @ctx will
+ * be passed as first argument to @handler
+ * One can simply force messages to be emitted to another FILE * than
+ * stderr by setting @ctx to this file handle and @handler to NULL.
+ * For multi-threaded applications, this must be set separately for each thread.
+ */
+void
+xmlSetGenericErrorFunc(void *ctx, xmlGenericErrorFunc handler) {
+    xmlGenericErrorContext = ctx;
+    if (handler != NULL)
+	xmlGenericError = handler;
+    else
+	xmlGenericError = xmlGenericErrorDefaultFunc;
+}
+
+/**
+ * xmlSetStructuredErrorFunc:
+ * @ctx:  the new error handling context
+ * @handler:  the new handler function
+ *
+ * Function to reset the handler and the error context for out of
+ * context structured error messages.
+ * This simply means that @handler will be called for subsequent
+ * error messages while not parsing nor validating. And @ctx will
+ * be passed as first argument to @handler
+ * For multi-threaded applications, this must be set separately for each thread.
+ */
+void
+xmlSetStructuredErrorFunc(void *ctx, xmlStructuredErrorFunc handler) {
+    xmlStructuredErrorContext = ctx;
+    xmlStructuredError = handler;
+}
+
+/************************************************************************
+ *									*
+ *			Handling of parsing errors			*
+ *									*
+ ************************************************************************/
+
+/**
+ * xmlParserPrintFileInfo:
+ * @input:  an xmlParserInputPtr input
+ *
+ * Displays the associated file and line informations for the current input
+ */
+
+void
+xmlParserPrintFileInfo(xmlParserInputPtr input) {
+    if (input != NULL) {
+	if (input->filename)
+	    xmlGenericError(xmlGenericErrorContext,
+		    "%s:%d: ", input->filename,
+		    input->line);
+	else
+	    xmlGenericError(xmlGenericErrorContext,
+		    "Entity: line %d: ", input->line);
+    }
+}
+
+/**
+ * xmlParserPrintFileContext:
+ * @input:  an xmlParserInputPtr input
+ *
+ * Displays current context within the input content for error tracking
+ */
+
+static void
+xmlParserPrintFileContextInternal(xmlParserInputPtr input ,
+		xmlGenericErrorFunc channel, void *data ) {
+    const xmlChar *cur, *base;
+    unsigned int n, col;	/* GCC warns if signed, because compared with sizeof() */
+    xmlChar  content[81]; /* space for 80 chars + line terminator */
+    xmlChar *ctnt;
+
+    if ((input == NULL) || (input->cur == NULL))
+        return;
+
+    cur = input->cur;
+    base = input->base;
+    /* skip backwards over any end-of-lines */
+    while ((cur > base) && ((*(cur) == '\n') || (*(cur) == '\r'))) {
+	cur--;
+    }
+    n = 0;
+    /* search backwards for beginning-of-line (to max buff size) */
+    while ((n++ < (sizeof(content)-1)) && (cur > base) &&
+	   (*(cur) != '\n') && (*(cur) != '\r'))
+        cur--;
+    if ((*(cur) == '\n') || (*(cur) == '\r')) cur++;
+    /* calculate the error position in terms of the current position */
+    col = input->cur - cur;
+    /* search forward for end-of-line (to max buff size) */
+    n = 0;
+    ctnt = content;
+    /* copy selected text to our buffer */
+    while ((*cur != 0) && (*(cur) != '\n') &&
+	   (*(cur) != '\r') && (n < sizeof(content)-1)) {
+		*ctnt++ = *cur++;
+	n++;
+    }
+    *ctnt = 0;
+    /* print out the selected text */
+    channel(data ,"%s\n", content);
+    /* create blank line with problem pointer */
+    n = 0;
+    ctnt = content;
+    /* (leave buffer space for pointer + line terminator) */
+    while ((n<col) && (n++ < sizeof(content)-2) && (*ctnt != 0)) {
+	if (*(ctnt) != '\t')
+	    *(ctnt) = ' ';
+	ctnt++;
+    }
+    *ctnt++ = '^';
+    *ctnt = 0;
+    channel(data ,"%s\n", content);
+}
+
+/**
+ * xmlParserPrintFileContext:
+ * @input:  an xmlParserInputPtr input
+ *
+ * Displays current context within the input content for error tracking
+ */
+void
+xmlParserPrintFileContext(xmlParserInputPtr input) {
+   xmlParserPrintFileContextInternal(input, xmlGenericError,
+                                     xmlGenericErrorContext);
+}
+
+/**
+ * xmlReportError:
+ * @err: the error
+ * @ctx: the parser context or NULL
+ * @str: the formatted error message
+ *
+ * Report an erro with its context, replace the 4 old error/warning
+ * routines.
+ */
+static void
+xmlReportError(xmlErrorPtr err, xmlParserCtxtPtr ctxt, const char *str,
+               xmlGenericErrorFunc channel, void *data)
+{
+    char *file = NULL;
+    int line = 0;
+    int code = -1;
+    int domain;
+    const xmlChar *name = NULL;
+    xmlNodePtr node;
+    xmlErrorLevel level;
+    xmlParserInputPtr input = NULL;
+    xmlParserInputPtr cur = NULL;
+
+    if (err == NULL)
+        return;
+
+    if (channel == NULL) {
+	channel = xmlGenericError;
+	data = xmlGenericErrorContext;
+    }
+    file = err->file;
+    line = err->line;
+    code = err->code;
+    domain = err->domain;
+    level = err->level;
+    node = err->node;
+
+    if (code == XML_ERR_OK)
+        return;
+
+    if ((node != NULL) && (node->type == XML_ELEMENT_NODE))
+        name = node->name;
+
+    /*
+     * Maintain the compatibility with the legacy error handling
+     */
+    if (ctxt != NULL) {
+        input = ctxt->input;
+        if ((input != NULL) && (input->filename == NULL) &&
+            (ctxt->inputNr > 1)) {
+            cur = input;
+            input = ctxt->inputTab[ctxt->inputNr - 2];
+        }
+        if (input != NULL) {
+            if (input->filename)
+                channel(data, "%s:%d: ", input->filename, input->line);
+            else if ((line != 0) && (domain == XML_FROM_PARSER))
+                channel(data, "Entity: line %d: ", input->line);
+        }
+    } else {
+        if (file != NULL)
+            channel(data, "%s:%d: ", file, line);
+        else if ((line != 0) &&
+	         ((domain == XML_FROM_PARSER) || (domain == XML_FROM_SCHEMASV)||
+		  (domain == XML_FROM_SCHEMASP)||(domain == XML_FROM_DTD) ||
+		  (domain == XML_FROM_RELAXNGP)||(domain == XML_FROM_RELAXNGV)))
+            channel(data, "Entity: line %d: ", line);
+    }
+    if (name != NULL) {
+        channel(data, "element %s: ", name);
+    }
+    switch (domain) {
+        case XML_FROM_PARSER:
+            channel(data, "parser ");
+            break;
+        case XML_FROM_NAMESPACE:
+            channel(data, "namespace ");
+            break;
+        case XML_FROM_DTD:
+        case XML_FROM_VALID:
+            channel(data, "validity ");
+            break;
+        case XML_FROM_HTML:
+            channel(data, "HTML parser ");
+            break;
+        case XML_FROM_MEMORY:
+            channel(data, "memory ");
+            break;
+        case XML_FROM_OUTPUT:
+            channel(data, "output ");
+            break;
+        case XML_FROM_IO:
+            channel(data, "I/O ");
+            break;
+        case XML_FROM_XINCLUDE:
+            channel(data, "XInclude ");
+            break;
+        case XML_FROM_XPATH:
+            channel(data, "XPath ");
+            break;
+        case XML_FROM_XPOINTER:
+            channel(data, "parser ");
+            break;
+        case XML_FROM_REGEXP:
+            channel(data, "regexp ");
+            break;
+        case XML_FROM_MODULE:
+            channel(data, "module ");
+            break;
+        case XML_FROM_SCHEMASV:
+            channel(data, "Schemas validity ");
+            break;
+        case XML_FROM_SCHEMASP:
+            channel(data, "Schemas parser ");
+            break;
+        case XML_FROM_RELAXNGP:
+            channel(data, "Relax-NG parser ");
+            break;
+        case XML_FROM_RELAXNGV:
+            channel(data, "Relax-NG validity ");
+            break;
+        case XML_FROM_CATALOG:
+            channel(data, "Catalog ");
+            break;
+        case XML_FROM_C14N:
+            channel(data, "C14N ");
+            break;
+        case XML_FROM_XSLT:
+            channel(data, "XSLT ");
+            break;
+        case XML_FROM_I18N:
+            channel(data, "encoding ");
+            break;
+        case XML_FROM_SCHEMATRONV:
+            channel(data, "schematron ");
+            break;
+        case XML_FROM_BUFFER:
+            channel(data, "internal buffer ");
+            break;
+        case XML_FROM_URI:
+            channel(data, "URI ");
+            break;
+        default:
+            break;
+    }
+    switch (level) {
+        case XML_ERR_NONE:
+            channel(data, ": ");
+            break;
+        case XML_ERR_WARNING:
+            channel(data, "warning : ");
+            break;
+        case XML_ERR_ERROR:
+            channel(data, "error : ");
+            break;
+        case XML_ERR_FATAL:
+            channel(data, "error : ");
+            break;
+    }
+    if (str != NULL) {
+        int len;
+	len = xmlStrlen((const xmlChar *)str);
+	if ((len > 0) && (str[len - 1] != '\n'))
+	    channel(data, "%s\n", str);
+	else
+	    channel(data, "%s", str);
+    } else {
+        channel(data, "%s\n", "out of memory error");
+    }
+
+    if (ctxt != NULL) {
+        xmlParserPrintFileContextInternal(input, channel, data);
+        if (cur != NULL) {
+            if (cur->filename)
+                channel(data, "%s:%d: \n", cur->filename, cur->line);
+            else if ((line != 0) && (domain == XML_FROM_PARSER))
+                channel(data, "Entity: line %d: \n", cur->line);
+            xmlParserPrintFileContextInternal(cur, channel, data);
+        }
+    }
+    if ((domain == XML_FROM_XPATH) && (err->str1 != NULL) &&
+        (err->int1 < 100) &&
+	(err->int1 < xmlStrlen((const xmlChar *)err->str1))) {
+	xmlChar buf[150];
+	int i;
+
+	channel(data, "%s\n", err->str1);
+	for (i=0;i < err->int1;i++)
+	     buf[i] = ' ';
+	buf[i++] = '^';
+	buf[i] = 0;
+	channel(data, "%s\n", buf);
+    }
+}
+
+/**
+ * __xmlRaiseError:
+ * @schannel: the structured callback channel
+ * @channel: the old callback channel
+ * @data: the callback data
+ * @ctx: the parser context or NULL
+ * @ctx: the parser context or NULL
+ * @domain: the domain for the error
+ * @code: the code for the error
+ * @level: the xmlErrorLevel for the error
+ * @file: the file source of the error (or NULL)
+ * @line: the line of the error or 0 if N/A
+ * @str1: extra string info
+ * @str2: extra string info
+ * @str3: extra string info
+ * @int1: extra int info
+ * @col: column number of the error or 0 if N/A
+ * @msg:  the message to display/transmit
+ * @...:  extra parameters for the message display
+ *
+ * Update the appropriate global or contextual error structure,
+ * then forward the error message down the parser or generic
+ * error callback handler
+ */
+void XMLCDECL
+__xmlRaiseError(xmlStructuredErrorFunc schannel,
+              xmlGenericErrorFunc channel, void *data, void *ctx,
+              void *nod, int domain, int code, xmlErrorLevel level,
+              const char *file, int line, const char *str1,
+              const char *str2, const char *str3, int int1, int col,
+	      const char *msg, ...)
+{
+    xmlParserCtxtPtr ctxt = NULL;
+    xmlNodePtr node = (xmlNodePtr) nod;
+    char *str = NULL;
+    xmlParserInputPtr input = NULL;
+    xmlErrorPtr to = &xmlLastError;
+    xmlNodePtr baseptr = NULL;
+
+    if (code == XML_ERR_OK)
+        return;
+    if ((xmlGetWarningsDefaultValue == 0) && (level == XML_ERR_WARNING))
+        return;
+    if ((domain == XML_FROM_PARSER) || (domain == XML_FROM_HTML) ||
+        (domain == XML_FROM_DTD) || (domain == XML_FROM_NAMESPACE) ||
+	(domain == XML_FROM_IO) || (domain == XML_FROM_VALID)) {
+	ctxt = (xmlParserCtxtPtr) ctx;
+	if ((schannel == NULL) && (ctxt != NULL) && (ctxt->sax != NULL) &&
+	    (ctxt->sax->initialized == XML_SAX2_MAGIC) &&
+	    (ctxt->sax->serror != NULL)) {
+	    schannel = ctxt->sax->serror;
+	    data = ctxt->userData;
+	}
+    }
+    /*
+     * Check if structured error handler set
+     */
+    if (schannel == NULL) {
+	schannel = xmlStructuredError;
+	/*
+	 * if user has defined handler, change data ptr to user's choice
+	 */
+	if (schannel != NULL)
+	    data = xmlStructuredErrorContext;
+    }
+    /*
+     * Formatting the message
+     */
+    if (msg == NULL) {
+        str = (char *) xmlStrdup(BAD_CAST "No error message provided");
+    } else {
+        XML_GET_VAR_STR(msg, str);
+    }
+
+    /*
+     * specific processing if a parser context is provided
+     */
+    if (ctxt != NULL) {
+        if (file == NULL) {
+            input = ctxt->input;
+            if ((input != NULL) && (input->filename == NULL) &&
+                (ctxt->inputNr > 1)) {
+                input = ctxt->inputTab[ctxt->inputNr - 2];
+            }
+            if (input != NULL) {
+                file = input->filename;
+                line = input->line;
+                col = input->col;
+            }
+        }
+        to = &ctxt->lastError;
+    } else if ((node != NULL) && (file == NULL)) {
+	int i;
+
+	if ((node->doc != NULL) && (node->doc->URL != NULL)) {
+	    baseptr = node;
+/*	    file = (const char *) node->doc->URL; */
+	}
+	for (i = 0;
+	     ((i < 10) && (node != NULL) && (node->type != XML_ELEMENT_NODE));
+	     i++)
+	     node = node->parent;
+        if ((baseptr == NULL) && (node != NULL) &&
+	    (node->doc != NULL) && (node->doc->URL != NULL))
+	    baseptr = node;
+
+	if ((node != NULL) && (node->type == XML_ELEMENT_NODE))
+	    line = node->line;
+	if ((line == 0) || (line == 65535))
+	    line = xmlGetLineNo(node);
+    }
+
+    /*
+     * Save the information about the error
+     */
+    xmlResetError(to);
+    to->domain = domain;
+    to->code = code;
+    to->message = str;
+    to->level = level;
+    if (file != NULL)
+        to->file = (char *) xmlStrdup((const xmlChar *) file);
+    else if (baseptr != NULL) {
+#ifdef LIBXML_XINCLUDE_ENABLED
+	/*
+	 * We check if the error is within an XInclude section and,
+	 * if so, attempt to print out the href of the XInclude instead
+	 * of the usual "base" (doc->URL) for the node (bug 152623).
+	 */
+        xmlNodePtr prev = baseptr;
+	int inclcount = 0;
+	while (prev != NULL) {
+	    if (prev->prev == NULL)
+	        prev = prev->parent;
+	    else {
+	        prev = prev->prev;
+		if (prev->type == XML_XINCLUDE_START) {
+		    if (--inclcount < 0)
+		        break;
+		} else if (prev->type == XML_XINCLUDE_END)
+		    inclcount++;
+	    }
+	}
+	if (prev != NULL) {
+	    if (prev->type == XML_XINCLUDE_START) {
+		prev->type = XML_ELEMENT_NODE;
+		to->file = (char *) xmlGetProp(prev, BAD_CAST "href");
+		prev->type = XML_XINCLUDE_START;
+	    } else {
+		to->file = (char *) xmlGetProp(prev, BAD_CAST "href");
+	    }
+	} else
+#endif
+	    to->file = (char *) xmlStrdup(baseptr->doc->URL);
+	if ((to->file == NULL) && (node != NULL) && (node->doc != NULL)) {
+	    to->file = (char *) xmlStrdup(node->doc->URL);
+	}
+    }
+    to->line = line;
+    if (str1 != NULL)
+        to->str1 = (char *) xmlStrdup((const xmlChar *) str1);
+    if (str2 != NULL)
+        to->str2 = (char *) xmlStrdup((const xmlChar *) str2);
+    if (str3 != NULL)
+        to->str3 = (char *) xmlStrdup((const xmlChar *) str3);
+    to->int1 = int1;
+    to->int2 = col;
+    to->node = node;
+    to->ctxt = ctx;
+
+    if (to != &xmlLastError)
+        xmlCopyError(to,&xmlLastError);
+
+    if (schannel != NULL) {
+	schannel(data, to);
+	return;
+    }
+
+    /*
+     * Find the callback channel if channel param is NULL
+     */
+    if ((ctxt != NULL) && (channel == NULL) &&
+        (xmlStructuredError == NULL) && (ctxt->sax != NULL)) {
+        if (level == XML_ERR_WARNING)
+	    channel = ctxt->sax->warning;
+        else
+	    channel = ctxt->sax->error;
+	data = ctxt->userData;
+    } else if (channel == NULL) {
+	channel = xmlGenericError;
+	if (ctxt != NULL) {
+	    data = ctxt;
+	} else {
+	    data = xmlGenericErrorContext;
+	}
+    }
+    if (channel == NULL)
+        return;
+
+    if ((channel == xmlParserError) ||
+        (channel == xmlParserWarning) ||
+	(channel == xmlParserValidityError) ||
+	(channel == xmlParserValidityWarning))
+	xmlReportError(to, ctxt, str, NULL, NULL);
+    else if ((channel == (xmlGenericErrorFunc) fprintf) ||
+             (channel == xmlGenericErrorDefaultFunc))
+	xmlReportError(to, ctxt, str, channel, data);
+    else
+	channel(data, "%s", str);
+}
+
+/**
+ * __xmlSimpleError:
+ * @domain: where the error comes from
+ * @code: the error code
+ * @node: the context node
+ * @extra:  extra informations
+ *
+ * Handle an out of memory condition
+ */
+void
+__xmlSimpleError(int domain, int code, xmlNodePtr node,
+                 const char *msg, const char *extra)
+{
+
+    if (code == XML_ERR_NO_MEMORY) {
+	if (extra)
+	    __xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
+			    XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, extra,
+			    NULL, NULL, 0, 0,
+			    "Memory allocation failed : %s\n", extra);
+	else
+	    __xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
+			    XML_ERR_NO_MEMORY, XML_ERR_FATAL, NULL, 0, NULL,
+			    NULL, NULL, 0, 0, "Memory allocation failed\n");
+    } else {
+	__xmlRaiseError(NULL, NULL, NULL, NULL, node, domain,
+			code, XML_ERR_ERROR, NULL, 0, extra,
+			NULL, NULL, 0, 0, msg, extra);
+    }
+}
+/**
+ * xmlParserError:
+ * @ctx:  an XML parser context
+ * @msg:  the message to display/transmit
+ * @...:  extra parameters for the message display
+ *
+ * Display and format an error messages, gives file, line, position and
+ * extra parameters.
+ */
+void XMLCDECL
+xmlParserError(void *ctx, const char *msg, ...)
+{
+    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
+    xmlParserInputPtr input = NULL;
+    xmlParserInputPtr cur = NULL;
+    char * str;
+
+    if (ctxt != NULL) {
+	input = ctxt->input;
+	if ((input != NULL) && (input->filename == NULL) &&
+	    (ctxt->inputNr > 1)) {
+	    cur = input;
+	    input = ctxt->inputTab[ctxt->inputNr - 2];
+	}
+	xmlParserPrintFileInfo(input);
+    }
+
+    xmlGenericError(xmlGenericErrorContext, "error: ");
+    XML_GET_VAR_STR(msg, str);
+    xmlGenericError(xmlGenericErrorContext, "%s", str);
+    if (str != NULL)
+	xmlFree(str);
+
+    if (ctxt != NULL) {
+	xmlParserPrintFileContext(input);
+	if (cur != NULL) {
+	    xmlParserPrintFileInfo(cur);
+	    xmlGenericError(xmlGenericErrorContext, "\n");
+	    xmlParserPrintFileContext(cur);
+	}
+    }
+}
+
+/**
+ * xmlParserWarning:
+ * @ctx:  an XML parser context
+ * @msg:  the message to display/transmit
+ * @...:  extra parameters for the message display
+ *
+ * Display and format a warning messages, gives file, line, position and
+ * extra parameters.
+ */
+void XMLCDECL
+xmlParserWarning(void *ctx, const char *msg, ...)
+{
+    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
+    xmlParserInputPtr input = NULL;
+    xmlParserInputPtr cur = NULL;
+    char * str;
+
+    if (ctxt != NULL) {
+	input = ctxt->input;
+	if ((input != NULL) && (input->filename == NULL) &&
+	    (ctxt->inputNr > 1)) {
+	    cur = input;
+	    input = ctxt->inputTab[ctxt->inputNr - 2];
+	}
+	xmlParserPrintFileInfo(input);
+    }
+
+    xmlGenericError(xmlGenericErrorContext, "warning: ");
+    XML_GET_VAR_STR(msg, str);
+    xmlGenericError(xmlGenericErrorContext, "%s", str);
+    if (str != NULL)
+	xmlFree(str);
+
+    if (ctxt != NULL) {
+	xmlParserPrintFileContext(input);
+	if (cur != NULL) {
+	    xmlParserPrintFileInfo(cur);
+	    xmlGenericError(xmlGenericErrorContext, "\n");
+	    xmlParserPrintFileContext(cur);
+	}
+    }
+}
+
+/************************************************************************
+ *									*
+ *			Handling of validation errors			*
+ *									*
+ ************************************************************************/
+
+/**
+ * xmlParserValidityError:
+ * @ctx:  an XML parser context
+ * @msg:  the message to display/transmit
+ * @...:  extra parameters for the message display
+ *
+ * Display and format an validity error messages, gives file,
+ * line, position and extra parameters.
+ */
+void XMLCDECL
+xmlParserValidityError(void *ctx, const char *msg, ...)
+{
+    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
+    xmlParserInputPtr input = NULL;
+    char * str;
+    int len = xmlStrlen((const xmlChar *) msg);
+    static int had_info = 0;
+
+    if ((len > 1) && (msg[len - 2] != ':')) {
+	if (ctxt != NULL) {
+	    input = ctxt->input;
+	    if ((input->filename == NULL) && (ctxt->inputNr > 1))
+		input = ctxt->inputTab[ctxt->inputNr - 2];
+
+	    if (had_info == 0) {
+		xmlParserPrintFileInfo(input);
+	    }
+	}
+	xmlGenericError(xmlGenericErrorContext, "validity error: ");
+	had_info = 0;
+    } else {
+	had_info = 1;
+    }
+
+    XML_GET_VAR_STR(msg, str);
+    xmlGenericError(xmlGenericErrorContext, "%s", str);
+    if (str != NULL)
+	xmlFree(str);
+
+    if ((ctxt != NULL) && (input != NULL)) {
+	xmlParserPrintFileContext(input);
+    }
+}
+
+/**
+ * xmlParserValidityWarning:
+ * @ctx:  an XML parser context
+ * @msg:  the message to display/transmit
+ * @...:  extra parameters for the message display
+ *
+ * Display and format a validity warning messages, gives file, line,
+ * position and extra parameters.
+ */
+void XMLCDECL
+xmlParserValidityWarning(void *ctx, const char *msg, ...)
+{
+    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
+    xmlParserInputPtr input = NULL;
+    char * str;
+    int len = xmlStrlen((const xmlChar *) msg);
+
+    if ((ctxt != NULL) && (len != 0) && (msg[len - 1] != ':')) {
+	input = ctxt->input;
+	if ((input->filename == NULL) && (ctxt->inputNr > 1))
+	    input = ctxt->inputTab[ctxt->inputNr - 2];
+
+	xmlParserPrintFileInfo(input);
+    }
+
+    xmlGenericError(xmlGenericErrorContext, "validity warning: ");
+    XML_GET_VAR_STR(msg, str);
+    xmlGenericError(xmlGenericErrorContext, "%s", str);
+    if (str != NULL)
+	xmlFree(str);
+
+    if (ctxt != NULL) {
+	xmlParserPrintFileContext(input);
+    }
+}
+
+
+/************************************************************************
+ *									*
+ *			Extended Error Handling				*
+ *									*
+ ************************************************************************/
+
+/**
+ * xmlGetLastError:
+ *
+ * Get the last global error registered. This is per thread if compiled
+ * with thread support.
+ *
+ * Returns NULL if no error occured or a pointer to the error
+ */
+xmlErrorPtr
+xmlGetLastError(void)
+{
+    if (xmlLastError.code == XML_ERR_OK)
+        return (NULL);
+    return (&xmlLastError);
+}
+
+/**
+ * xmlResetError:
+ * @err: pointer to the error.
+ *
+ * Cleanup the error.
+ */
+void
+xmlResetError(xmlErrorPtr err)
+{
+    if (err == NULL)
+        return;
+    if (err->code == XML_ERR_OK)
+        return;
+    if (err->message != NULL)
+        xmlFree(err->message);
+    if (err->file != NULL)
+        xmlFree(err->file);
+    if (err->str1 != NULL)
+        xmlFree(err->str1);
+    if (err->str2 != NULL)
+        xmlFree(err->str2);
+    if (err->str3 != NULL)
+        xmlFree(err->str3);
+    memset(err, 0, sizeof(xmlError));
+    err->code = XML_ERR_OK;
+}
+
+/**
+ * xmlResetLastError:
+ *
+ * Cleanup the last global error registered. For parsing error
+ * this does not change the well-formedness result.
+ */
+void
+xmlResetLastError(void)
+{
+    if (xmlLastError.code == XML_ERR_OK)
+        return;
+    xmlResetError(&xmlLastError);
+}
+
+/**
+ * xmlCtxtGetLastError:
+ * @ctx:  an XML parser context
+ *
+ * Get the last parsing error registered.
+ *
+ * Returns NULL if no error occured or a pointer to the error
+ */
+xmlErrorPtr
+xmlCtxtGetLastError(void *ctx)
+{
+    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
+
+    if (ctxt == NULL)
+        return (NULL);
+    if (ctxt->lastError.code == XML_ERR_OK)
+        return (NULL);
+    return (&ctxt->lastError);
+}
+
+/**
+ * xmlCtxtResetLastError:
+ * @ctx:  an XML parser context
+ *
+ * Cleanup the last global error registered. For parsing error
+ * this does not change the well-formedness result.
+ */
+void
+xmlCtxtResetLastError(void *ctx)
+{
+    xmlParserCtxtPtr ctxt = (xmlParserCtxtPtr) ctx;
+
+    if (ctxt == NULL)
+        return;
+    ctxt->errNo = XML_ERR_OK;
+    if (ctxt->lastError.code == XML_ERR_OK)
+        return;
+    xmlResetError(&ctxt->lastError);
+}
+
+/**
+ * xmlCopyError:
+ * @from:  a source error
+ * @to:  a target error
+ *
+ * Save the original error to the new place.
+ *
+ * Returns 0 in case of success and -1 in case of error.
+ */
+int
+xmlCopyError(xmlErrorPtr from, xmlErrorPtr to) {
+    char *message, *file, *str1, *str2, *str3;
+
+    if ((from == NULL) || (to == NULL))
+        return(-1);
+
+    message = (char *) xmlStrdup((xmlChar *) from->message);
+    file = (char *) xmlStrdup ((xmlChar *) from->file);
+    str1 = (char *) xmlStrdup ((xmlChar *) from->str1);
+    str2 = (char *) xmlStrdup ((xmlChar *) from->str2);
+    str3 = (char *) xmlStrdup ((xmlChar *) from->str3);
+
+    if (to->message != NULL)
+        xmlFree(to->message);
+    if (to->file != NULL)
+        xmlFree(to->file);
+    if (to->str1 != NULL)
+        xmlFree(to->str1);
+    if (to->str2 != NULL)
+        xmlFree(to->str2);
+    if (to->str3 != NULL)
+        xmlFree(to->str3);
+    to->domain = from->domain;
+    to->code = from->code;
+    to->level = from->level;
+    to->line = from->line;
+    to->node = from->node;
+    to->int1 = from->int1;
+    to->int2 = from->int2;
+    to->node = from->node;
+    to->ctxt = from->ctxt;
+    to->message = message;
+    to->file = file;
+    to->str1 = str1;
+    to->str2 = str2;
+    to->str3 = str3;
+
+    return 0;
+}
+
+#define bottom_error
+#include "elfgcchack.h"