Merge commit '574585fa78070b0cc6b5ad22543e21a3502a122b' as 'libxml2'

1 files changed, 2624 insertions, 0 deletions

diff --git a/libxml2/xinclude.c b/libxml2/xinclude.c
new file mode 100644
index 0000000..e3bb43e
--- /dev/null
+++ b/libxml2/xinclude.c
@@ -0,0 +1,2624 @@
+/*
+ * xinclude.c : Code to implement XInclude processing
+ *
+ * World Wide Web Consortium W3C Last Call Working Draft 10 November 2003
+ * http://www.w3.org/TR/2003/WD-xinclude-20031110
+ *
+ * See Copyright for the status of this software.
+ *
+ * daniel@veillard.com
+ */
+
+#define IN_LIBXML
+#include "libxml.h"
+
+#include <string.h>
+#include <libxml/xmlmemory.h>
+#include <libxml/tree.h>
+#include <libxml/parser.h>
+#include <libxml/uri.h>
+#include <libxml/xpath.h>
+#include <libxml/xpointer.h>
+#include <libxml/parserInternals.h>
+#include <libxml/xmlerror.h>
+#include <libxml/encoding.h>
+#include <libxml/globals.h>
+
+#ifdef LIBXML_XINCLUDE_ENABLED
+#include <libxml/xinclude.h>
+
+#include "buf.h"
+
+#define XINCLUDE_MAX_DEPTH 40
+
+/* #define DEBUG_XINCLUDE */
+#ifdef DEBUG_XINCLUDE
+#ifdef LIBXML_DEBUG_ENABLED
+#include <libxml/debugXML.h>
+#endif
+#endif
+
+/************************************************************************
+ *									*
+ *			XInclude context handling			*
+ *									*
+ ************************************************************************/
+
+/*
+ * An XInclude context
+ */
+typedef xmlChar *xmlURL;
+
+typedef struct _xmlXIncludeRef xmlXIncludeRef;
+typedef xmlXIncludeRef *xmlXIncludeRefPtr;
+struct _xmlXIncludeRef {
+    xmlChar              *URI; /* the fully resolved resource URL */
+    xmlChar         *fragment; /* the fragment in the URI */
+    xmlDocPtr		  doc; /* the parsed document */
+    xmlNodePtr            ref; /* the node making the reference in the source */
+    xmlNodePtr            inc; /* the included copy */
+    int                   xml; /* xml or txt */
+    int                 count; /* how many refs use that specific doc */
+    xmlXPathObjectPtr    xptr; /* the xpointer if needed */
+    int		      emptyFb; /* flag to show fallback empty */
+};
+
+struct _xmlXIncludeCtxt {
+    xmlDocPtr             doc; /* the source document */
+    int               incBase; /* the first include for this document */
+    int                 incNr; /* number of includes */
+    int                incMax; /* size of includes tab */
+    xmlXIncludeRefPtr *incTab; /* array of included references */
+
+    int                 txtNr; /* number of unparsed documents */
+    int                txtMax; /* size of unparsed documents tab */
+    xmlNodePtr        *txtTab; /* array of unparsed text nodes */
+    xmlURL         *txturlTab; /* array of unparsed text URLs */
+
+    xmlChar *             url; /* the current URL processed */
+    int                 urlNr; /* number of URLs stacked */
+    int                urlMax; /* size of URL stack */
+    xmlChar *         *urlTab; /* URL stack */
+
+    int              nbErrors; /* the number of errors detected */
+    int                legacy; /* using XINCLUDE_OLD_NS */
+    int            parseFlags; /* the flags used for parsing XML documents */
+    xmlChar *		 base; /* the current xml:base */
+
+    void            *_private; /* application data */
+};
+
+static int
+xmlXIncludeDoProcess(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc, xmlNodePtr tree);
+
+
+/************************************************************************
+ *									*
+ *			XInclude error handler				*
+ *									*
+ ************************************************************************/
+
+/**
+ * xmlXIncludeErrMemory:
+ * @extra:  extra information
+ *
+ * Handle an out of memory condition
+ */
+static void
+xmlXIncludeErrMemory(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node,
+                     const char *extra)
+{
+    if (ctxt != NULL)
+	ctxt->nbErrors++;
+    __xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
+                    XML_ERR_NO_MEMORY, XML_ERR_ERROR, NULL, 0,
+		    extra, NULL, NULL, 0, 0,
+		    "Memory allocation failed : %s\n", extra);
+}
+
+/**
+ * xmlXIncludeErr:
+ * @ctxt: the XInclude context
+ * @node: the context node
+ * @msg:  the error message
+ * @extra:  extra information
+ *
+ * Handle an XInclude error
+ */
+static void LIBXML_ATTR_FORMAT(4,0)
+xmlXIncludeErr(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node, int error,
+               const char *msg, const xmlChar *extra)
+{
+    if (ctxt != NULL)
+	ctxt->nbErrors++;
+    __xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
+                    error, XML_ERR_ERROR, NULL, 0,
+		    (const char *) extra, NULL, NULL, 0, 0,
+		    msg, (const char *) extra);
+}
+
+#if 0
+/**
+ * xmlXIncludeWarn:
+ * @ctxt: the XInclude context
+ * @node: the context node
+ * @msg:  the error message
+ * @extra:  extra information
+ *
+ * Emit an XInclude warning.
+ */
+static void LIBXML_ATTR_FORMAT(4,0)
+xmlXIncludeWarn(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node, int error,
+               const char *msg, const xmlChar *extra)
+{
+    __xmlRaiseError(NULL, NULL, NULL, ctxt, node, XML_FROM_XINCLUDE,
+                    error, XML_ERR_WARNING, NULL, 0,
+		    (const char *) extra, NULL, NULL, 0, 0,
+		    msg, (const char *) extra);
+}
+#endif
+
+/**
+ * xmlXIncludeGetProp:
+ * @ctxt:  the XInclude context
+ * @cur:  the node
+ * @name:  the attribute name
+ *
+ * Get an XInclude attribute
+ *
+ * Returns the value (to be freed) or NULL if not found
+ */
+static xmlChar *
+xmlXIncludeGetProp(xmlXIncludeCtxtPtr ctxt, xmlNodePtr cur,
+                   const xmlChar *name) {
+    xmlChar *ret;
+
+    ret = xmlGetNsProp(cur, XINCLUDE_NS, name);
+    if (ret != NULL)
+        return(ret);
+    if (ctxt->legacy != 0) {
+	ret = xmlGetNsProp(cur, XINCLUDE_OLD_NS, name);
+	if (ret != NULL)
+	    return(ret);
+    }
+    ret = xmlGetProp(cur, name);
+    return(ret);
+}
+/**
+ * xmlXIncludeFreeRef:
+ * @ref: the XInclude reference
+ *
+ * Free an XInclude reference
+ */
+static void
+xmlXIncludeFreeRef(xmlXIncludeRefPtr ref) {
+    if (ref == NULL)
+	return;
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "Freeing ref\n");
+#endif
+    if (ref->doc != NULL) {
+#ifdef DEBUG_XINCLUDE
+	xmlGenericError(xmlGenericErrorContext, "Freeing doc %s\n", ref->URI);
+#endif
+	xmlFreeDoc(ref->doc);
+    }
+    if (ref->URI != NULL)
+	xmlFree(ref->URI);
+    if (ref->fragment != NULL)
+	xmlFree(ref->fragment);
+    if (ref->xptr != NULL)
+	xmlXPathFreeObject(ref->xptr);
+    xmlFree(ref);
+}
+
+/**
+ * xmlXIncludeNewRef:
+ * @ctxt: the XInclude context
+ * @URI:  the resource URI
+ *
+ * Creates a new reference within an XInclude context
+ *
+ * Returns the new set
+ */
+static xmlXIncludeRefPtr
+xmlXIncludeNewRef(xmlXIncludeCtxtPtr ctxt, const xmlChar *URI,
+	          xmlNodePtr ref) {
+    xmlXIncludeRefPtr ret;
+
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "New ref %s\n", URI);
+#endif
+    ret = (xmlXIncludeRefPtr) xmlMalloc(sizeof(xmlXIncludeRef));
+    if (ret == NULL) {
+        xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
+	return(NULL);
+    }
+    memset(ret, 0, sizeof(xmlXIncludeRef));
+    if (URI == NULL)
+	ret->URI = NULL;
+    else
+	ret->URI = xmlStrdup(URI);
+    ret->fragment = NULL;
+    ret->ref = ref;
+    ret->doc = NULL;
+    ret->count = 0;
+    ret->xml = 0;
+    ret->inc = NULL;
+    if (ctxt->incMax == 0) {
+	ctxt->incMax = 4;
+        ctxt->incTab = (xmlXIncludeRefPtr *) xmlMalloc(ctxt->incMax *
+					      sizeof(ctxt->incTab[0]));
+        if (ctxt->incTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
+	    xmlXIncludeFreeRef(ret);
+	    return(NULL);
+	}
+    }
+    if (ctxt->incNr >= ctxt->incMax) {
+	ctxt->incMax *= 2;
+        ctxt->incTab = (xmlXIncludeRefPtr *) xmlRealloc(ctxt->incTab,
+	             ctxt->incMax * sizeof(ctxt->incTab[0]));
+        if (ctxt->incTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, ref, "growing XInclude context");
+	    xmlXIncludeFreeRef(ret);
+	    return(NULL);
+	}
+    }
+    ctxt->incTab[ctxt->incNr++] = ret;
+    return(ret);
+}
+
+/**
+ * xmlXIncludeNewContext:
+ * @doc:  an XML Document
+ *
+ * Creates a new XInclude context
+ *
+ * Returns the new set
+ */
+xmlXIncludeCtxtPtr
+xmlXIncludeNewContext(xmlDocPtr doc) {
+    xmlXIncludeCtxtPtr ret;
+
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "New context\n");
+#endif
+    if (doc == NULL)
+	return(NULL);
+    ret = (xmlXIncludeCtxtPtr) xmlMalloc(sizeof(xmlXIncludeCtxt));
+    if (ret == NULL) {
+	xmlXIncludeErrMemory(NULL, (xmlNodePtr) doc,
+	                     "creating XInclude context");
+	return(NULL);
+    }
+    memset(ret, 0, sizeof(xmlXIncludeCtxt));
+    ret->doc = doc;
+    ret->incNr = 0;
+    ret->incBase = 0;
+    ret->incMax = 0;
+    ret->incTab = NULL;
+    ret->nbErrors = 0;
+    return(ret);
+}
+
+/**
+ * xmlXIncludeURLPush:
+ * @ctxt:  the parser context
+ * @value:  the url
+ *
+ * Pushes a new url on top of the url stack
+ *
+ * Returns -1 in case of error, the index in the stack otherwise
+ */
+static int
+xmlXIncludeURLPush(xmlXIncludeCtxtPtr ctxt,
+	           const xmlChar *value)
+{
+    if (ctxt->urlNr > XINCLUDE_MAX_DEPTH) {
+	xmlXIncludeErr(ctxt, NULL, XML_XINCLUDE_RECURSION,
+	               "detected a recursion in %s\n", value);
+	return(-1);
+    }
+    if (ctxt->urlTab == NULL) {
+	ctxt->urlMax = 4;
+	ctxt->urlNr = 0;
+	ctxt->urlTab = (xmlChar * *) xmlMalloc(
+		        ctxt->urlMax * sizeof(ctxt->urlTab[0]));
+        if (ctxt->urlTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, NULL, "adding URL");
+            return (-1);
+        }
+    }
+    if (ctxt->urlNr >= ctxt->urlMax) {
+        ctxt->urlMax *= 2;
+        ctxt->urlTab =
+            (xmlChar * *) xmlRealloc(ctxt->urlTab,
+                                      ctxt->urlMax *
+                                      sizeof(ctxt->urlTab[0]));
+        if (ctxt->urlTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, NULL, "adding URL");
+            return (-1);
+        }
+    }
+    ctxt->url = ctxt->urlTab[ctxt->urlNr] = xmlStrdup(value);
+    return (ctxt->urlNr++);
+}
+
+/**
+ * xmlXIncludeURLPop:
+ * @ctxt: the parser context
+ *
+ * Pops the top URL from the URL stack
+ */
+static void
+xmlXIncludeURLPop(xmlXIncludeCtxtPtr ctxt)
+{
+    xmlChar * ret;
+
+    if (ctxt->urlNr <= 0)
+        return;
+    ctxt->urlNr--;
+    if (ctxt->urlNr > 0)
+        ctxt->url = ctxt->urlTab[ctxt->urlNr - 1];
+    else
+        ctxt->url = NULL;
+    ret = ctxt->urlTab[ctxt->urlNr];
+    ctxt->urlTab[ctxt->urlNr] = NULL;
+    if (ret != NULL)
+	xmlFree(ret);
+}
+
+/**
+ * xmlXIncludeFreeContext:
+ * @ctxt: the XInclude context
+ *
+ * Free an XInclude context
+ */
+void
+xmlXIncludeFreeContext(xmlXIncludeCtxtPtr ctxt) {
+    int i;
+
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "Freeing context\n");
+#endif
+    if (ctxt == NULL)
+	return;
+    while (ctxt->urlNr > 0)
+	xmlXIncludeURLPop(ctxt);
+    if (ctxt->urlTab != NULL)
+	xmlFree(ctxt->urlTab);
+    for (i = 0;i < ctxt->incNr;i++) {
+	if (ctxt->incTab[i] != NULL)
+	    xmlXIncludeFreeRef(ctxt->incTab[i]);
+    }
+    if (ctxt->txturlTab != NULL) {
+	for (i = 0;i < ctxt->txtNr;i++) {
+	    if (ctxt->txturlTab[i] != NULL)
+		xmlFree(ctxt->txturlTab[i]);
+	}
+    }
+    if (ctxt->incTab != NULL)
+	xmlFree(ctxt->incTab);
+    if (ctxt->txtTab != NULL)
+	xmlFree(ctxt->txtTab);
+    if (ctxt->txturlTab != NULL)
+	xmlFree(ctxt->txturlTab);
+    if (ctxt->base != NULL) {
+        xmlFree(ctxt->base);
+    }
+    xmlFree(ctxt);
+}
+
+/**
+ * xmlXIncludeParseFile:
+ * @ctxt:  the XInclude context
+ * @URL:  the URL or file path
+ *
+ * parse a document for XInclude
+ */
+static xmlDocPtr
+xmlXIncludeParseFile(xmlXIncludeCtxtPtr ctxt, const char *URL) {
+    xmlDocPtr ret;
+    xmlParserCtxtPtr pctxt;
+    xmlParserInputPtr inputStream;
+
+    xmlInitParser();
+
+    pctxt = xmlNewParserCtxt();
+    if (pctxt == NULL) {
+	xmlXIncludeErrMemory(ctxt, NULL, "cannot allocate parser context");
+	return(NULL);
+    }
+
+    /*
+     * pass in the application data to the parser context.
+     */
+    pctxt->_private = ctxt->_private;
+
+    /*
+     * try to ensure that new documents included are actually
+     * built with the same dictionary as the including document.
+     */
+    if ((ctxt->doc != NULL) && (ctxt->doc->dict != NULL)) {
+       if (pctxt->dict != NULL)
+            xmlDictFree(pctxt->dict);
+	pctxt->dict = ctxt->doc->dict;
+	xmlDictReference(pctxt->dict);
+    }
+
+    xmlCtxtUseOptions(pctxt, ctxt->parseFlags | XML_PARSE_DTDLOAD);
+
+    inputStream = xmlLoadExternalEntity(URL, NULL, pctxt);
+    if (inputStream == NULL) {
+	xmlFreeParserCtxt(pctxt);
+	return(NULL);
+    }
+
+    inputPush(pctxt, inputStream);
+
+    if (pctxt->directory == NULL)
+        pctxt->directory = xmlParserGetDirectory(URL);
+
+    pctxt->loadsubset |= XML_DETECT_IDS;
+
+    xmlParseDocument(pctxt);
+
+    if (pctxt->wellFormed) {
+        ret = pctxt->myDoc;
+    }
+    else {
+        ret = NULL;
+	if (pctxt->myDoc != NULL)
+	    xmlFreeDoc(pctxt->myDoc);
+        pctxt->myDoc = NULL;
+    }
+    xmlFreeParserCtxt(pctxt);
+
+    return(ret);
+}
+
+/**
+ * xmlXIncludeAddNode:
+ * @ctxt:  the XInclude context
+ * @cur:  the new node
+ *
+ * Add a new node to process to an XInclude context
+ */
+static int
+xmlXIncludeAddNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr cur) {
+    xmlXIncludeRefPtr ref;
+    xmlURIPtr uri;
+    xmlChar *URL;
+    xmlChar *fragment = NULL;
+    xmlChar *href;
+    xmlChar *parse;
+    xmlChar *base;
+    xmlChar *URI;
+    int xml = 1, i; /* default Issue 64 */
+    int local = 0;
+
+
+    if (ctxt == NULL)
+	return(-1);
+    if (cur == NULL)
+	return(-1);
+
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "Add node\n");
+#endif
+    /*
+     * read the attributes
+     */
+    href = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_HREF);
+    if (href == NULL) {
+	href = xmlStrdup(BAD_CAST ""); /* @@@@ href is now optional */
+	if (href == NULL)
+	    return(-1);
+    }
+    if ((href[0] == '#') || (href[0] == 0))
+	local = 1;
+    parse = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE);
+    if (parse != NULL) {
+	if (xmlStrEqual(parse, XINCLUDE_PARSE_XML))
+	    xml = 1;
+	else if (xmlStrEqual(parse, XINCLUDE_PARSE_TEXT))
+	    xml = 0;
+	else {
+	    xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_PARSE_VALUE,
+	                   "invalid value %s for 'parse'\n", parse);
+	    if (href != NULL)
+		xmlFree(href);
+	    if (parse != NULL)
+		xmlFree(parse);
+	    return(-1);
+	}
+    }
+
+    /*
+     * compute the URI
+     */
+    base = xmlNodeGetBase(ctxt->doc, cur);
+    if (base == NULL) {
+	URI = xmlBuildURI(href, ctxt->doc->URL);
+    } else {
+	URI = xmlBuildURI(href, base);
+    }
+    if (URI == NULL) {
+	xmlChar *escbase;
+	xmlChar *eschref;
+	/*
+	 * Some escaping may be needed
+	 */
+	escbase = xmlURIEscape(base);
+	eschref = xmlURIEscape(href);
+	URI = xmlBuildURI(eschref, escbase);
+	if (escbase != NULL)
+	    xmlFree(escbase);
+	if (eschref != NULL)
+	    xmlFree(eschref);
+    }
+    if (parse != NULL)
+	xmlFree(parse);
+    if (href != NULL)
+	xmlFree(href);
+    if (base != NULL)
+	xmlFree(base);
+    if (URI == NULL) {
+	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
+	               "failed build URL\n", NULL);
+	return(-1);
+    }
+    fragment = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE_XPOINTER);
+
+    /*
+     * Check the URL and remove any fragment identifier
+     */
+    uri = xmlParseURI((const char *)URI);
+    if (uri == NULL) {
+	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
+	               "invalid value URI %s\n", URI);
+	if (fragment != NULL)
+	    xmlFree(fragment);
+	xmlFree(URI);
+	return(-1);
+    }
+
+    if (uri->fragment != NULL) {
+        if (ctxt->legacy != 0) {
+	    if (fragment == NULL) {
+		fragment = (xmlChar *) uri->fragment;
+	    } else {
+		xmlFree(uri->fragment);
+	    }
+	} else {
+	    xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_FRAGMENT_ID,
+       "Invalid fragment identifier in URI %s use the xpointer attribute\n",
+                           URI);
+	    if (fragment != NULL)
+	        xmlFree(fragment);
+	    xmlFreeURI(uri);
+	    xmlFree(URI);
+	    return(-1);
+	}
+	uri->fragment = NULL;
+    }
+    URL = xmlSaveUri(uri);
+    xmlFreeURI(uri);
+    xmlFree(URI);
+    if (URL == NULL) {
+	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_HREF_URI,
+	               "invalid value URI %s\n", URI);
+	if (fragment != NULL)
+	    xmlFree(fragment);
+	return(-1);
+    }
+
+    /*
+     * If local and xml then we need a fragment
+     */
+    if ((local == 1) && (xml == 1) &&
+        ((fragment == NULL) || (fragment[0] == 0))) {
+	xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_RECURSION,
+	               "detected a local recursion with no xpointer in %s\n",
+		       URL);
+	if (fragment != NULL)
+	    xmlFree(fragment);
+	return(-1);
+    }
+
+    /*
+     * Check the URL against the stack for recursions
+     */
+    if ((!local) && (xml == 1)) {
+	for (i = 0;i < ctxt->urlNr;i++) {
+	    if (xmlStrEqual(URL, ctxt->urlTab[i])) {
+		xmlXIncludeErr(ctxt, cur, XML_XINCLUDE_RECURSION,
+		               "detected a recursion in %s\n", URL);
+		return(-1);
+	    }
+	}
+    }
+
+    ref = xmlXIncludeNewRef(ctxt, URL, cur);
+    if (ref == NULL) {
+	return(-1);
+    }
+    ref->fragment = fragment;
+    ref->doc = NULL;
+    ref->xml = xml;
+    ref->count = 1;
+    xmlFree(URL);
+    return(0);
+}
+
+/**
+ * xmlXIncludeRecurseDoc:
+ * @ctxt:  the XInclude context
+ * @doc:  the new document
+ * @url:  the associated URL
+ *
+ * The XInclude recursive nature is handled at this point.
+ */
+static void
+xmlXIncludeRecurseDoc(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc,
+	              const xmlURL url ATTRIBUTE_UNUSED) {
+    xmlXIncludeCtxtPtr newctxt;
+    int i;
+
+    /*
+     * Avoid recursion in already substitued resources
+    for (i = 0;i < ctxt->urlNr;i++) {
+	if (xmlStrEqual(doc->URL, ctxt->urlTab[i]))
+	    return;
+    }
+     */
+
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "Recursing in doc %s\n", doc->URL);
+#endif
+    /*
+     * Handle recursion here.
+     */
+
+    newctxt = xmlXIncludeNewContext(doc);
+    if (newctxt != NULL) {
+	/*
+	 * Copy the private user data
+	 */
+	newctxt->_private = ctxt->_private;
+	/*
+	 * Copy the existing document set
+	 */
+	newctxt->incMax = ctxt->incMax;
+	newctxt->incNr = ctxt->incNr;
+        newctxt->incTab = (xmlXIncludeRefPtr *) xmlMalloc(newctxt->incMax *
+		                          sizeof(newctxt->incTab[0]));
+        if (newctxt->incTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, (xmlNodePtr) doc, "processing doc");
+	    xmlFree(newctxt);
+	    return;
+	}
+	/*
+	 * copy the urlTab
+	 */
+	newctxt->urlMax = ctxt->urlMax;
+	newctxt->urlNr = ctxt->urlNr;
+	newctxt->urlTab = ctxt->urlTab;
+
+	/*
+	 * Inherit the existing base
+	 */
+	newctxt->base = xmlStrdup(ctxt->base);
+
+	/*
+	 * Inherit the documents already in use by other includes
+	 */
+	newctxt->incBase = ctxt->incNr;
+	for (i = 0;i < ctxt->incNr;i++) {
+	    newctxt->incTab[i] = ctxt->incTab[i];
+	    newctxt->incTab[i]->count++; /* prevent the recursion from
+					    freeing it */
+	}
+	/*
+	 * The new context should also inherit the Parse Flags
+	 * (bug 132597)
+	 */
+	newctxt->parseFlags = ctxt->parseFlags;
+	xmlXIncludeDoProcess(newctxt, doc, xmlDocGetRootElement(doc));
+	for (i = 0;i < ctxt->incNr;i++) {
+	    newctxt->incTab[i]->count--;
+	    newctxt->incTab[i] = NULL;
+	}
+
+	/* urlTab may have been reallocated */
+	ctxt->urlTab = newctxt->urlTab;
+	ctxt->urlMax = newctxt->urlMax;
+
+	newctxt->urlMax = 0;
+	newctxt->urlNr = 0;
+	newctxt->urlTab = NULL;
+
+	xmlXIncludeFreeContext(newctxt);
+    }
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "Done recursing in doc %s\n", url);
+#endif
+}
+
+/**
+ * xmlXIncludeAddTxt:
+ * @ctxt:  the XInclude context
+ * @txt:  the new text node
+ * @url:  the associated URL
+ *
+ * Add a new txtument to the list
+ */
+static void
+xmlXIncludeAddTxt(xmlXIncludeCtxtPtr ctxt, xmlNodePtr txt, const xmlURL url) {
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "Adding text %s\n", url);
+#endif
+    if (ctxt->txtMax == 0) {
+	ctxt->txtMax = 4;
+        ctxt->txtTab = (xmlNodePtr *) xmlMalloc(ctxt->txtMax *
+		                          sizeof(ctxt->txtTab[0]));
+        if (ctxt->txtTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, NULL, "processing text");
+	    return;
+	}
+        ctxt->txturlTab = (xmlURL *) xmlMalloc(ctxt->txtMax *
+		                          sizeof(ctxt->txturlTab[0]));
+        if (ctxt->txturlTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, NULL, "processing text");
+	    return;
+	}
+    }
+    if (ctxt->txtNr >= ctxt->txtMax) {
+	ctxt->txtMax *= 2;
+        ctxt->txtTab = (xmlNodePtr *) xmlRealloc(ctxt->txtTab,
+	             ctxt->txtMax * sizeof(ctxt->txtTab[0]));
+        if (ctxt->txtTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, NULL, "processing text");
+	    return;
+	}
+        ctxt->txturlTab = (xmlURL *) xmlRealloc(ctxt->txturlTab,
+	             ctxt->txtMax * sizeof(ctxt->txturlTab[0]));
+        if (ctxt->txturlTab == NULL) {
+	    xmlXIncludeErrMemory(ctxt, NULL, "processing text");
+	    return;
+	}
+    }
+    ctxt->txtTab[ctxt->txtNr] = txt;
+    ctxt->txturlTab[ctxt->txtNr] = xmlStrdup(url);
+    ctxt->txtNr++;
+}
+
+/************************************************************************
+ *									*
+ *			Node copy with specific semantic		*
+ *									*
+ ************************************************************************/
+
+static xmlNodePtr
+xmlXIncludeCopyNodeList(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
+	                xmlDocPtr source, xmlNodePtr elem);
+
+/**
+ * xmlXIncludeCopyNode:
+ * @ctxt:  the XInclude context
+ * @target:  the document target
+ * @source:  the document source
+ * @elem:  the element
+ *
+ * Make a copy of the node while preserving the XInclude semantic
+ * of the Infoset copy
+ */
+static xmlNodePtr
+xmlXIncludeCopyNode(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
+	            xmlDocPtr source, xmlNodePtr elem) {
+    xmlNodePtr result = NULL;
+
+    if ((ctxt == NULL) || (target == NULL) || (source == NULL) ||
+	(elem == NULL))
+	return(NULL);
+    if (elem->type == XML_DTD_NODE)
+	return(NULL);
+    if (elem->type == XML_DOCUMENT_NODE)
+	result = xmlXIncludeCopyNodeList(ctxt, target, source, elem->children);
+    else
+        result = xmlDocCopyNode(elem, target, 1);
+    return(result);
+}
+
+/**
+ * xmlXIncludeCopyNodeList:
+ * @ctxt:  the XInclude context
+ * @target:  the document target
+ * @source:  the document source
+ * @elem:  the element list
+ *
+ * Make a copy of the node list while preserving the XInclude semantic
+ * of the Infoset copy
+ */
+static xmlNodePtr
+xmlXIncludeCopyNodeList(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
+	                xmlDocPtr source, xmlNodePtr elem) {
+    xmlNodePtr cur, res, result = NULL, last = NULL;
+
+    if ((ctxt == NULL) || (target == NULL) || (source == NULL) ||
+	(elem == NULL))
+	return(NULL);
+    cur = elem;
+    while (cur != NULL) {
+	res = xmlXIncludeCopyNode(ctxt, target, source, cur);
+	if (res != NULL) {
+	    if (result == NULL) {
+		result = last = res;
+	    } else {
+		last->next = res;
+		res->prev = last;
+		last = res;
+	    }
+	}
+	cur = cur->next;
+    }
+    return(result);
+}
+
+/**
+ * xmlXIncludeGetNthChild:
+ * @cur:  the node
+ * @no:  the child number
+ *
+ * Returns the @n'th element child of @cur or NULL
+ */
+static xmlNodePtr
+xmlXIncludeGetNthChild(xmlNodePtr cur, int no) {
+    int i;
+    if ((cur == NULL) || (cur->type == XML_NAMESPACE_DECL))
+        return(NULL);
+    cur = cur->children;
+    for (i = 0;i <= no;cur = cur->next) {
+	if (cur == NULL)
+	    return(cur);
+	if ((cur->type == XML_ELEMENT_NODE) ||
+	    (cur->type == XML_DOCUMENT_NODE) ||
+	    (cur->type == XML_HTML_DOCUMENT_NODE)) {
+	    i++;
+	    if (i == no)
+		break;
+	}
+    }
+    return(cur);
+}
+
+xmlNodePtr xmlXPtrAdvanceNode(xmlNodePtr cur, int *level); /* in xpointer.c */
+/**
+ * xmlXIncludeCopyRange:
+ * @ctxt:  the XInclude context
+ * @target:  the document target
+ * @source:  the document source
+ * @obj:  the XPointer result from the evaluation.
+ *
+ * Build a node list tree copy of the XPointer result.
+ *
+ * Returns an xmlNodePtr list or NULL.
+ *         The caller has to free the node tree.
+ */
+static xmlNodePtr
+xmlXIncludeCopyRange(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
+	                xmlDocPtr source, xmlXPathObjectPtr range) {
+    /* pointers to generated nodes */
+    xmlNodePtr list = NULL, last = NULL, listParent = NULL;
+    xmlNodePtr tmp, tmp2;
+    /* pointers to traversal nodes */
+    xmlNodePtr start, cur, end;
+    int index1, index2;
+    int level = 0, lastLevel = 0, endLevel = 0, endFlag = 0;
+
+    if ((ctxt == NULL) || (target == NULL) || (source == NULL) ||
+	(range == NULL))
+	return(NULL);
+    if (range->type != XPATH_RANGE)
+	return(NULL);
+    start = (xmlNodePtr) range->user;
+
+    if ((start == NULL) || (start->type == XML_NAMESPACE_DECL))
+	return(NULL);
+    end = range->user2;
+    if (end == NULL)
+	return(xmlDocCopyNode(start, target, 1));
+    if (end->type == XML_NAMESPACE_DECL)
+        return(NULL);
+
+    cur = start;
+    index1 = range->index;
+    index2 = range->index2;
+    /*
+     * level is depth of the current node under consideration
+     * list is the pointer to the root of the output tree
+     * listParent is a pointer to the parent of output tree (within
+       the included file) in case we need to add another level
+     * last is a pointer to the last node added to the output tree
+     * lastLevel is the depth of last (relative to the root)
+     */
+    while (cur != NULL) {
+	/*
+	 * Check if our output tree needs a parent
+	 */
+	if (level < 0) {
+	    while (level < 0) {
+	        /* copy must include namespaces and properties */
+	        tmp2 = xmlDocCopyNode(listParent, target, 2);
+	        xmlAddChild(tmp2, list);
+	        list = tmp2;
+	        listParent = listParent->parent;
+	        level++;
+	    }
+	    last = list;
+	    lastLevel = 0;
+	}
+	/*
+	 * Check whether we need to change our insertion point
+	 */
+	while (level < lastLevel) {
+	    last = last->parent;
+	    lastLevel --;
+	}
+	if (cur == end) {	/* Are we at the end of the range? */
+	    if (cur->type == XML_TEXT_NODE) {
+		const xmlChar *content = cur->content;
+		int len;
+
+		if (content == NULL) {
+		    tmp = xmlNewTextLen(NULL, 0);
+		} else {
+		    len = index2;
+		    if ((cur == start) && (index1 > 1)) {
+			content += (index1 - 1);
+			len -= (index1 - 1);
+		    } else {
+			len = index2;
+		    }
+		    tmp = xmlNewTextLen(content, len);
+		}
+		/* single sub text node selection */
+		if (list == NULL)
+		    return(tmp);
+		/* prune and return full set */
+		if (level == lastLevel)
+		    xmlAddNextSibling(last, tmp);
+		else
+		    xmlAddChild(last, tmp);
+		return(list);
+	    } else {	/* ending node not a text node */
+	        endLevel = level;	/* remember the level of the end node */
+		endFlag = 1;
+		/* last node - need to take care of properties + namespaces */
+		tmp = xmlDocCopyNode(cur, target, 2);
+		if (list == NULL) {
+		    list = tmp;
+		    listParent = cur->parent;
+		} else {
+		    if (level == lastLevel)
+			xmlAddNextSibling(last, tmp);
+		    else {
+			xmlAddChild(last, tmp);
+			lastLevel = level;
+		    }
+		}
+		last = tmp;
+
+		if (index2 > 1) {
+		    end = xmlXIncludeGetNthChild(cur, index2 - 1);
+		    index2 = 0;
+		}
+		if ((cur == start) && (index1 > 1)) {
+		    cur = xmlXIncludeGetNthChild(cur, index1 - 1);
+		    index1 = 0;
+		}  else {
+		    cur = cur->children;
+		}
+		level++;	/* increment level to show change */
+		/*
+		 * Now gather the remaining nodes from cur to end
+		 */
+		continue;	/* while */
+	    }
+	} else if (cur == start) {	/* Not at the end, are we at start? */
+	    if ((cur->type == XML_TEXT_NODE) ||
+		(cur->type == XML_CDATA_SECTION_NODE)) {
+		const xmlChar *content = cur->content;
+
+		if (content == NULL) {
+		    tmp = xmlNewTextLen(NULL, 0);
+		} else {
+		    if (index1 > 1) {
+			content += (index1 - 1);
+			index1 = 0;
+		    }
+		    tmp = xmlNewText(content);
+		}
+		last = list = tmp;
+		listParent = cur->parent;
+	    } else {		/* Not text node */
+	        /*
+		 * start of the range - need to take care of
+		 * properties and namespaces
+		 */
+		tmp = xmlDocCopyNode(cur, target, 2);
+		list = last = tmp;
+		listParent = cur->parent;
+		if (index1 > 1) {	/* Do we need to position? */
+		    cur = xmlXIncludeGetNthChild(cur, index1 - 1);
+		    level = lastLevel = 1;
+		    index1 = 0;
+		    /*
+		     * Now gather the remaining nodes from cur to end
+		     */
+		    continue; /* while */
+		}
+	    }
+	} else {
+	    tmp = NULL;
+	    switch (cur->type) {
+		case XML_DTD_NODE:
+		case XML_ELEMENT_DECL:
+		case XML_ATTRIBUTE_DECL:
+		case XML_ENTITY_NODE:
+		    /* Do not copy DTD informations */
+		    break;
+		case XML_ENTITY_DECL:
+		    /* handle crossing entities -> stack needed */
+		    break;
+		case XML_XINCLUDE_START:
+		case XML_XINCLUDE_END:
+		    /* don't consider it part of the tree content */
+		    break;
+		case XML_ATTRIBUTE_NODE:
+		    /* Humm, should not happen ! */
+		    break;
+		default:
+		    /*
+		     * Middle of the range - need to take care of
+		     * properties and namespaces
+		     */
+		    tmp = xmlDocCopyNode(cur, target, 2);
+		    break;
+	    }
+	    if (tmp != NULL) {
+		if (level == lastLevel)
+		    xmlAddNextSibling(last, tmp);
+		else {
+		    xmlAddChild(last, tmp);
+		    lastLevel = level;
+		}
+		last = tmp;
+	    }
+	}
+	/*
+	 * Skip to next node in document order
+	 */
+	cur = xmlXPtrAdvanceNode(cur, &level);
+	if (endFlag && (level >= endLevel))
+	    break;
+    }
+    return(list);
+}
+
+/**
+ * xmlXIncludeBuildNodeList:
+ * @ctxt:  the XInclude context
+ * @target:  the document target
+ * @source:  the document source
+ * @obj:  the XPointer result from the evaluation.
+ *
+ * Build a node list tree copy of the XPointer result.
+ * This will drop Attributes and Namespace declarations.
+ *
+ * Returns an xmlNodePtr list or NULL.
+ *         the caller has to free the node tree.
+ */
+static xmlNodePtr
+xmlXIncludeCopyXPointer(xmlXIncludeCtxtPtr ctxt, xmlDocPtr target,
+	                xmlDocPtr source, xmlXPathObjectPtr obj) {
+    xmlNodePtr list = NULL, last = NULL;
+    int i;
+
+    if (source == NULL)
+	source = ctxt->doc;
+    if ((ctxt == NULL) || (target == NULL) || (source == NULL) ||
+	(obj == NULL))
+	return(NULL);
+    switch (obj->type) {
+        case XPATH_NODESET: {
+	    xmlNodeSetPtr set = obj->nodesetval;
+	    if (set == NULL)
+		return(NULL);
+	    for (i = 0;i < set->nodeNr;i++) {
+		if (set->nodeTab[i] == NULL)
+		    continue;
+		switch (set->nodeTab[i]->type) {
+		    case XML_TEXT_NODE:
+		    case XML_CDATA_SECTION_NODE:
+		    case XML_ELEMENT_NODE:
+		    case XML_ENTITY_REF_NODE:
+		    case XML_ENTITY_NODE:
+		    case XML_PI_NODE:
+		    case XML_COMMENT_NODE:
+		    case XML_DOCUMENT_NODE:
+		    case XML_HTML_DOCUMENT_NODE:
+#ifdef LIBXML_DOCB_ENABLED
+		    case XML_DOCB_DOCUMENT_NODE:
+#endif
+		    case XML_XINCLUDE_END:
+			break;
+		    case XML_XINCLUDE_START: {
+	                xmlNodePtr tmp, cur = set->nodeTab[i];
+
+			cur = cur->next;
+			while (cur != NULL) {
+			    switch(cur->type) {
+				case XML_TEXT_NODE:
+				case XML_CDATA_SECTION_NODE:
+				case XML_ELEMENT_NODE:
+				case XML_ENTITY_REF_NODE:
+				case XML_ENTITY_NODE:
+				case XML_PI_NODE:
+				case XML_COMMENT_NODE:
+				    tmp = xmlXIncludeCopyNode(ctxt, target,
+							      source, cur);
+				    if (last == NULL) {
+					list = last = tmp;
+				    } else {
+					xmlAddNextSibling(last, tmp);
+					last = tmp;
+				    }
+				    cur = cur->next;
+				    continue;
+				default:
+				    break;
+			    }
+			    break;
+			}
+			continue;
+		    }
+		    case XML_ATTRIBUTE_NODE:
+		    case XML_NAMESPACE_DECL:
+		    case XML_DOCUMENT_TYPE_NODE:
+		    case XML_DOCUMENT_FRAG_NODE:
+		    case XML_NOTATION_NODE:
+		    case XML_DTD_NODE:
+		    case XML_ELEMENT_DECL:
+		    case XML_ATTRIBUTE_DECL:
+		    case XML_ENTITY_DECL:
+			continue; /* for */
+		}
+		if (last == NULL)
+		    list = last = xmlXIncludeCopyNode(ctxt, target, source,
+			                              set->nodeTab[i]);
+		else {
+		    xmlAddNextSibling(last,
+			    xmlXIncludeCopyNode(ctxt, target, source,
+				                set->nodeTab[i]));
+		    if (last->next != NULL)
+			last = last->next;
+		}
+	    }
+	    break;
+	}
+#ifdef LIBXML_XPTR_ENABLED
+	case XPATH_LOCATIONSET: {
+	    xmlLocationSetPtr set = (xmlLocationSetPtr) obj->user;
+	    if (set == NULL)
+		return(NULL);
+	    for (i = 0;i < set->locNr;i++) {
+		if (last == NULL)
+		    list = last = xmlXIncludeCopyXPointer(ctxt, target, source,
+			                                  set->locTab[i]);
+		else
+		    xmlAddNextSibling(last,
+			    xmlXIncludeCopyXPointer(ctxt, target, source,
+				                    set->locTab[i]));
+		if (last != NULL) {
+		    while (last->next != NULL)
+			last = last->next;
+		}
+	    }
+	    break;
+	}
+	case XPATH_RANGE:
+	    return(xmlXIncludeCopyRange(ctxt, target, source, obj));
+#endif
+	case XPATH_POINT:
+	    /* points are ignored in XInclude */
+	    break;
+	default:
+	    break;
+    }
+    return(list);
+}
+/************************************************************************
+ *									*
+ *			XInclude I/O handling				*
+ *									*
+ ************************************************************************/
+
+typedef struct _xmlXIncludeMergeData xmlXIncludeMergeData;
+typedef xmlXIncludeMergeData *xmlXIncludeMergeDataPtr;
+struct _xmlXIncludeMergeData {
+    xmlDocPtr doc;
+    xmlXIncludeCtxtPtr ctxt;
+};
+
+/**
+ * xmlXIncludeMergeOneEntity:
+ * @ent: the entity
+ * @doc:  the including doc
+ * @nr: the entity name
+ *
+ * Inplements the merge of one entity
+ */
+static void
+xmlXIncludeMergeEntity(xmlEntityPtr ent, xmlXIncludeMergeDataPtr data,
+	               xmlChar *name ATTRIBUTE_UNUSED) {
+    xmlEntityPtr ret, prev;
+    xmlDocPtr doc;
+    xmlXIncludeCtxtPtr ctxt;
+
+    if ((ent == NULL) || (data == NULL))
+	return;
+    ctxt = data->ctxt;
+    doc = data->doc;
+    if ((ctxt == NULL) || (doc == NULL))
+	return;
+    switch (ent->etype) {
+        case XML_INTERNAL_PARAMETER_ENTITY:
+        case XML_EXTERNAL_PARAMETER_ENTITY:
+        case XML_INTERNAL_PREDEFINED_ENTITY:
+	    return;
+        case XML_INTERNAL_GENERAL_ENTITY:
+        case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
+        case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
+	    break;
+    }
+    ret = xmlAddDocEntity(doc, ent->name, ent->etype, ent->ExternalID,
+			  ent->SystemID, ent->content);
+    if (ret != NULL) {
+	if (ent->URI != NULL)
+	    ret->URI = xmlStrdup(ent->URI);
+    } else {
+	prev = xmlGetDocEntity(doc, ent->name);
+	if (prev != NULL) {
+	    if (ent->etype != prev->etype)
+		goto error;
+
+	    if ((ent->SystemID != NULL) && (prev->SystemID != NULL)) {
+		if (!xmlStrEqual(ent->SystemID, prev->SystemID))
+		    goto error;
+	    } else if ((ent->ExternalID != NULL) &&
+		       (prev->ExternalID != NULL)) {
+		if (!xmlStrEqual(ent->ExternalID, prev->ExternalID))
+		    goto error;
+	    } else if ((ent->content != NULL) && (prev->content != NULL)) {
+		if (!xmlStrEqual(ent->content, prev->content))
+		    goto error;
+	    } else {
+		goto error;
+	    }
+
+	}
+    }
+    return;
+error:
+    switch (ent->etype) {
+        case XML_INTERNAL_PARAMETER_ENTITY:
+        case XML_EXTERNAL_PARAMETER_ENTITY:
+        case XML_INTERNAL_PREDEFINED_ENTITY:
+        case XML_INTERNAL_GENERAL_ENTITY:
+        case XML_EXTERNAL_GENERAL_PARSED_ENTITY:
+	    return;
+        case XML_EXTERNAL_GENERAL_UNPARSED_ENTITY:
+	    break;
+    }
+    xmlXIncludeErr(ctxt, (xmlNodePtr) ent, XML_XINCLUDE_ENTITY_DEF_MISMATCH,
+                   "mismatch in redefinition of entity %s\n",
+		   ent->name);
+}
+
+/**
+ * xmlXIncludeMergeEntities:
+ * @ctxt: an XInclude context
+ * @doc:  the including doc
+ * @from:  the included doc
+ *
+ * Inplements the entity merge
+ *
+ * Returns 0 if merge succeeded, -1 if some processing failed
+ */
+static int
+xmlXIncludeMergeEntities(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc,
+	                 xmlDocPtr from) {
+    xmlNodePtr cur;
+    xmlDtdPtr target, source;
+
+    if (ctxt == NULL)
+	return(-1);
+
+    if ((from == NULL) || (from->intSubset == NULL))
+	return(0);
+
+    target = doc->intSubset;
+    if (target == NULL) {
+	cur = xmlDocGetRootElement(doc);
+	if (cur == NULL)
+	    return(-1);
+        target = xmlCreateIntSubset(doc, cur->name, NULL, NULL);
+	if (target == NULL)
+	    return(-1);
+    }
+
+    source = from->intSubset;
+    if ((source != NULL) && (source->entities != NULL)) {
+	xmlXIncludeMergeData data;
+
+	data.ctxt = ctxt;
+	data.doc = doc;
+
+	xmlHashScan((xmlHashTablePtr) source->entities,
+		    (xmlHashScanner) xmlXIncludeMergeEntity, &data);
+    }
+    source = from->extSubset;
+    if ((source != NULL) && (source->entities != NULL)) {
+	xmlXIncludeMergeData data;
+
+	data.ctxt = ctxt;
+	data.doc = doc;
+
+	/*
+	 * don't duplicate existing stuff when external subsets are the same
+	 */
+	if ((!xmlStrEqual(target->ExternalID, source->ExternalID)) &&
+	    (!xmlStrEqual(target->SystemID, source->SystemID))) {
+	    xmlHashScan((xmlHashTablePtr) source->entities,
+			(xmlHashScanner) xmlXIncludeMergeEntity, &data);
+	}
+    }
+    return(0);
+}
+
+/**
+ * xmlXIncludeLoadDoc:
+ * @ctxt:  the XInclude context
+ * @url:  the associated URL
+ * @nr:  the xinclude node number
+ *
+ * Load the document, and store the result in the XInclude context
+ *
+ * Returns 0 in case of success, -1 in case of failure
+ */
+static int
+xmlXIncludeLoadDoc(xmlXIncludeCtxtPtr ctxt, const xmlChar *url, int nr) {
+    xmlDocPtr doc;
+    xmlURIPtr uri;
+    xmlChar *URL;
+    xmlChar *fragment = NULL;
+    int i = 0;
+#ifdef LIBXML_XPTR_ENABLED
+    int saveFlags;
+#endif
+
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "Loading doc %s:%d\n", url, nr);
+#endif
+    /*
+     * Check the URL and remove any fragment identifier
+     */
+    uri = xmlParseURI((const char *)url);
+    if (uri == NULL) {
+	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	               XML_XINCLUDE_HREF_URI,
+		       "invalid value URI %s\n", url);
+	return(-1);
+    }
+    if (uri->fragment != NULL) {
+	fragment = (xmlChar *) uri->fragment;
+	uri->fragment = NULL;
+    }
+    if ((ctxt->incTab != NULL) && (ctxt->incTab[nr] != NULL) &&
+        (ctxt->incTab[nr]->fragment != NULL)) {
+	if (fragment != NULL) xmlFree(fragment);
+	fragment = xmlStrdup(ctxt->incTab[nr]->fragment);
+    }
+    URL = xmlSaveUri(uri);
+    xmlFreeURI(uri);
+    if (URL == NULL) {
+        if (ctxt->incTab != NULL)
+	    xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+			   XML_XINCLUDE_HREF_URI,
+			   "invalid value URI %s\n", url);
+	else
+	    xmlXIncludeErr(ctxt, NULL,
+			   XML_XINCLUDE_HREF_URI,
+			   "invalid value URI %s\n", url);
+	if (fragment != NULL)
+	    xmlFree(fragment);
+	return(-1);
+    }
+
+    /*
+     * Handling of references to the local document are done
+     * directly through ctxt->doc.
+     */
+    if ((URL[0] == 0) || (URL[0] == '#') ||
+	((ctxt->doc != NULL) && (xmlStrEqual(URL, ctxt->doc->URL)))) {
+	doc = NULL;
+        goto loaded;
+    }
+
+    /*
+     * Prevent reloading twice the document.
+     */
+    for (i = 0; i < ctxt->incNr; i++) {
+	if ((xmlStrEqual(URL, ctxt->incTab[i]->URI)) &&
+	    (ctxt->incTab[i]->doc != NULL)) {
+	    doc = ctxt->incTab[i]->doc;
+#ifdef DEBUG_XINCLUDE
+	    printf("Already loaded %s\n", URL);
+#endif
+	    goto loaded;
+	}
+    }
+
+    /*
+     * Load it.
+     */
+#ifdef DEBUG_XINCLUDE
+    printf("loading %s\n", URL);
+#endif
+#ifdef LIBXML_XPTR_ENABLED
+    /*
+     * If this is an XPointer evaluation, we want to assure that
+     * all entities have been resolved prior to processing the
+     * referenced document
+     */
+    saveFlags = ctxt->parseFlags;
+    if (fragment != NULL) {	/* if this is an XPointer eval */
+	ctxt->parseFlags |= XML_PARSE_NOENT;
+    }
+#endif
+
+    doc = xmlXIncludeParseFile(ctxt, (const char *)URL);
+#ifdef LIBXML_XPTR_ENABLED
+    ctxt->parseFlags = saveFlags;
+#endif
+    if (doc == NULL) {
+	xmlFree(URL);
+	if (fragment != NULL)
+	    xmlFree(fragment);
+	return(-1);
+    }
+    ctxt->incTab[nr]->doc = doc;
+    /*
+     * It's possible that the requested URL has been mapped to a
+     * completely different location (e.g. through a catalog entry).
+     * To check for this, we compare the URL with that of the doc
+     * and change it if they disagree (bug 146988).
+     */
+   if (!xmlStrEqual(URL, doc->URL)) {
+       xmlFree(URL);
+       URL = xmlStrdup(doc->URL);
+   }
+    for (i = nr + 1; i < ctxt->incNr; i++) {
+	if (xmlStrEqual(URL, ctxt->incTab[i]->URI)) {
+	    ctxt->incTab[nr]->count++;
+#ifdef DEBUG_XINCLUDE
+	    printf("Increasing %s count since reused\n", URL);
+#endif
+            break;
+	}
+    }
+
+    /*
+     * Make sure we have all entities fixed up
+     */
+    xmlXIncludeMergeEntities(ctxt, ctxt->doc, doc);
+
+    /*
+     * We don't need the DTD anymore, free up space
+    if (doc->intSubset != NULL) {
+	xmlUnlinkNode((xmlNodePtr) doc->intSubset);
+	xmlFreeNode((xmlNodePtr) doc->intSubset);
+	doc->intSubset = NULL;
+    }
+    if (doc->extSubset != NULL) {
+	xmlUnlinkNode((xmlNodePtr) doc->extSubset);
+	xmlFreeNode((xmlNodePtr) doc->extSubset);
+	doc->extSubset = NULL;
+    }
+     */
+    xmlXIncludeRecurseDoc(ctxt, doc, URL);
+
+loaded:
+    if (fragment == NULL) {
+	/*
+	 * Add the top children list as the replacement copy.
+	 */
+	if (doc == NULL)
+	{
+	    /* Hopefully a DTD declaration won't be copied from
+	     * the same document */
+	    ctxt->incTab[nr]->inc = xmlCopyNodeList(ctxt->doc->children);
+	} else {
+	    ctxt->incTab[nr]->inc = xmlXIncludeCopyNodeList(ctxt, ctxt->doc,
+		                                       doc, doc->children);
+	}
+    }
+#ifdef LIBXML_XPTR_ENABLED
+    else {
+	/*
+	 * Computes the XPointer expression and make a copy used
+	 * as the replacement copy.
+	 */
+	xmlXPathObjectPtr xptr;
+	xmlXPathContextPtr xptrctxt;
+	xmlNodeSetPtr set;
+
+	if (doc == NULL) {
+	    xptrctxt = xmlXPtrNewContext(ctxt->doc, ctxt->incTab[nr]->ref,
+		                         NULL);
+	} else {
+	    xptrctxt = xmlXPtrNewContext(doc, NULL, NULL);
+	}
+	if (xptrctxt == NULL) {
+	    xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	                   XML_XINCLUDE_XPTR_FAILED,
+			   "could not create XPointer context\n", NULL);
+	    xmlFree(URL);
+	    xmlFree(fragment);
+	    return(-1);
+	}
+	xptr = xmlXPtrEval(fragment, xptrctxt);
+	if (xptr == NULL) {
+	    xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	                   XML_XINCLUDE_XPTR_FAILED,
+			   "XPointer evaluation failed: #%s\n",
+			   fragment);
+	    xmlXPathFreeContext(xptrctxt);
+	    xmlFree(URL);
+	    xmlFree(fragment);
+	    return(-1);
+	}
+	switch (xptr->type) {
+	    case XPATH_UNDEFINED:
+	    case XPATH_BOOLEAN:
+	    case XPATH_NUMBER:
+	    case XPATH_STRING:
+	    case XPATH_POINT:
+	    case XPATH_USERS:
+	    case XPATH_XSLT_TREE:
+		xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+		               XML_XINCLUDE_XPTR_RESULT,
+			       "XPointer is not a range: #%s\n",
+			       fragment);
+		xmlXPathFreeContext(xptrctxt);
+		xmlFree(URL);
+		xmlFree(fragment);
+		return(-1);
+	    case XPATH_NODESET:
+	        if ((xptr->nodesetval == NULL) ||
+		    (xptr->nodesetval->nodeNr <= 0)) {
+		    xmlXPathFreeContext(xptrctxt);
+		    xmlFree(URL);
+		    xmlFree(fragment);
+		    return(-1);
+		}
+
+	    case XPATH_RANGE:
+	    case XPATH_LOCATIONSET:
+		break;
+	}
+	set = xptr->nodesetval;
+	if (set != NULL) {
+	    for (i = 0;i < set->nodeNr;i++) {
+		if (set->nodeTab[i] == NULL)
+		    continue;
+		switch (set->nodeTab[i]->type) {
+		    case XML_ELEMENT_NODE:
+		    case XML_TEXT_NODE:
+		    case XML_CDATA_SECTION_NODE:
+		    case XML_ENTITY_REF_NODE:
+		    case XML_ENTITY_NODE:
+		    case XML_PI_NODE:
+		    case XML_COMMENT_NODE:
+		    case XML_DOCUMENT_NODE:
+		    case XML_HTML_DOCUMENT_NODE:
+#ifdef LIBXML_DOCB_ENABLED
+		    case XML_DOCB_DOCUMENT_NODE:
+#endif
+			continue;
+
+		    case XML_ATTRIBUTE_NODE:
+			xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+			               XML_XINCLUDE_XPTR_RESULT,
+				       "XPointer selects an attribute: #%s\n",
+				       fragment);
+			set->nodeTab[i] = NULL;
+			continue;
+		    case XML_NAMESPACE_DECL:
+			xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+			               XML_XINCLUDE_XPTR_RESULT,
+				       "XPointer selects a namespace: #%s\n",
+				       fragment);
+			set->nodeTab[i] = NULL;
+			continue;
+		    case XML_DOCUMENT_TYPE_NODE:
+		    case XML_DOCUMENT_FRAG_NODE:
+		    case XML_NOTATION_NODE:
+		    case XML_DTD_NODE:
+		    case XML_ELEMENT_DECL:
+		    case XML_ATTRIBUTE_DECL:
+		    case XML_ENTITY_DECL:
+		    case XML_XINCLUDE_START:
+		    case XML_XINCLUDE_END:
+			xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+			               XML_XINCLUDE_XPTR_RESULT,
+				   "XPointer selects unexpected nodes: #%s\n",
+				       fragment);
+			set->nodeTab[i] = NULL;
+			set->nodeTab[i] = NULL;
+			continue; /* for */
+		}
+	    }
+	}
+	if (doc == NULL) {
+	    ctxt->incTab[nr]->xptr = xptr;
+	    ctxt->incTab[nr]->inc = NULL;
+	} else {
+	    ctxt->incTab[nr]->inc =
+		xmlXIncludeCopyXPointer(ctxt, ctxt->doc, doc, xptr);
+	    xmlXPathFreeObject(xptr);
+	}
+	xmlXPathFreeContext(xptrctxt);
+	xmlFree(fragment);
+    }
+#endif
+
+    /*
+     * Do the xml:base fixup if needed
+     */
+    if ((doc != NULL) && (URL != NULL) &&
+        (!(ctxt->parseFlags & XML_PARSE_NOBASEFIX)) &&
+	(!(doc->parseFlags & XML_PARSE_NOBASEFIX))) {
+	xmlNodePtr node;
+	xmlChar *base;
+	xmlChar *curBase;
+
+	/*
+	 * The base is only adjusted if "necessary", i.e. if the xinclude node
+	 * has a base specified, or the URL is relative
+	 */
+	base = xmlGetNsProp(ctxt->incTab[nr]->ref, BAD_CAST "base",
+			XML_XML_NAMESPACE);
+	if (base == NULL) {
+	    /*
+	     * No xml:base on the xinclude node, so we check whether the
+	     * URI base is different than (relative to) the context base
+	     */
+	    curBase = xmlBuildRelativeURI(URL, ctxt->base);
+	    if (curBase == NULL) {	/* Error return */
+	        xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	               XML_XINCLUDE_HREF_URI,
+		       "trying to build relative URI from %s\n", URL);
+	    } else {
+		/* If the URI doesn't contain a slash, it's not relative */
+	        if (!xmlStrchr(curBase, (xmlChar) '/'))
+		    xmlFree(curBase);
+		else
+		    base = curBase;
+	    }
+	}
+	if (base != NULL) {	/* Adjustment may be needed */
+	    node = ctxt->incTab[nr]->inc;
+	    while (node != NULL) {
+		/* Only work on element nodes */
+		if (node->type == XML_ELEMENT_NODE) {
+		    curBase = xmlNodeGetBase(node->doc, node);
+		    /* If no current base, set it */
+		    if (curBase == NULL) {
+			xmlNodeSetBase(node, base);
+		    } else {
+			/*
+			 * If the current base is the same as the
+			 * URL of the document, then reset it to be
+			 * the specified xml:base or the relative URI
+			 */
+			if (xmlStrEqual(curBase, node->doc->URL)) {
+			    xmlNodeSetBase(node, base);
+			} else {
+			    /*
+			     * If the element already has an xml:base
+			     * set, then relativise it if necessary
+			     */
+			    xmlChar *xmlBase;
+			    xmlBase = xmlGetNsProp(node,
+					    BAD_CAST "base",
+					    XML_XML_NAMESPACE);
+			    if (xmlBase != NULL) {
+				xmlChar *relBase;
+				relBase = xmlBuildURI(xmlBase, base);
+				if (relBase == NULL) { /* error */
+				    xmlXIncludeErr(ctxt,
+						ctxt->incTab[nr]->ref,
+						XML_XINCLUDE_HREF_URI,
+					"trying to rebuild base from %s\n",
+						xmlBase);
+				} else {
+				    xmlNodeSetBase(node, relBase);
+				    xmlFree(relBase);
+				}
+				xmlFree(xmlBase);
+			    }
+			}
+			xmlFree(curBase);
+		    }
+		}
+	        node = node->next;
+	    }
+	    xmlFree(base);
+	}
+    }
+    if ((nr < ctxt->incNr) && (ctxt->incTab[nr]->doc != NULL) &&
+	(ctxt->incTab[nr]->count <= 1)) {
+#ifdef DEBUG_XINCLUDE
+        printf("freeing %s\n", ctxt->incTab[nr]->doc->URL);
+#endif
+	xmlFreeDoc(ctxt->incTab[nr]->doc);
+	ctxt->incTab[nr]->doc = NULL;
+    }
+    xmlFree(URL);
+    return(0);
+}
+
+/**
+ * xmlXIncludeLoadTxt:
+ * @ctxt:  the XInclude context
+ * @url:  the associated URL
+ * @nr:  the xinclude node number
+ *
+ * Load the content, and store the result in the XInclude context
+ *
+ * Returns 0 in case of success, -1 in case of failure
+ */
+static int
+xmlXIncludeLoadTxt(xmlXIncludeCtxtPtr ctxt, const xmlChar *url, int nr) {
+    xmlParserInputBufferPtr buf;
+    xmlNodePtr node;
+    xmlURIPtr uri;
+    xmlChar *URL;
+    int i;
+    xmlChar *encoding = NULL;
+    xmlCharEncoding enc = (xmlCharEncoding) 0;
+    xmlParserCtxtPtr pctxt;
+    xmlParserInputPtr inputStream;
+    int xinclude_multibyte_fallback_used = 0;
+
+    /*
+     * Check the URL and remove any fragment identifier
+     */
+    uri = xmlParseURI((const char *)url);
+    if (uri == NULL) {
+	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_HREF_URI,
+	               "invalid value URI %s\n", url);
+	return(-1);
+    }
+    if (uri->fragment != NULL) {
+	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_TEXT_FRAGMENT,
+	               "fragment identifier forbidden for text: %s\n",
+		       (const xmlChar *) uri->fragment);
+	xmlFreeURI(uri);
+	return(-1);
+    }
+    URL = xmlSaveUri(uri);
+    xmlFreeURI(uri);
+    if (URL == NULL) {
+	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref, XML_XINCLUDE_HREF_URI,
+	               "invalid value URI %s\n", url);
+	return(-1);
+    }
+
+    /*
+     * Handling of references to the local document are done
+     * directly through ctxt->doc.
+     */
+    if (URL[0] == 0) {
+	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	               XML_XINCLUDE_TEXT_DOCUMENT,
+		       "text serialization of document not available\n", NULL);
+	xmlFree(URL);
+	return(-1);
+    }
+
+    /*
+     * Prevent reloading twice the document.
+     */
+    for (i = 0; i < ctxt->txtNr; i++) {
+	if (xmlStrEqual(URL, ctxt->txturlTab[i])) {
+	    node = xmlCopyNode(ctxt->txtTab[i], 1);
+	    goto loaded;
+	}
+    }
+    /*
+     * Try to get the encoding if available
+     */
+    if ((ctxt->incTab[nr] != NULL) && (ctxt->incTab[nr]->ref != NULL)) {
+	encoding = xmlGetProp(ctxt->incTab[nr]->ref, XINCLUDE_PARSE_ENCODING);
+    }
+    if (encoding != NULL) {
+	/*
+	 * TODO: we should not have to remap to the xmlCharEncoding
+	 *       predefined set, a better interface than
+	 *       xmlParserInputBufferCreateFilename should allow any
+	 *       encoding supported by iconv
+	 */
+        enc = xmlParseCharEncoding((const char *) encoding);
+	if (enc == XML_CHAR_ENCODING_ERROR) {
+	    xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	                   XML_XINCLUDE_UNKNOWN_ENCODING,
+			   "encoding %s not supported\n", encoding);
+	    xmlFree(encoding);
+	    xmlFree(URL);
+	    return(-1);
+	}
+	xmlFree(encoding);
+    }
+
+    /*
+     * Load it.
+     */
+    pctxt = xmlNewParserCtxt();
+    inputStream = xmlLoadExternalEntity((const char*)URL, NULL, pctxt);
+    if(inputStream == NULL) {
+	xmlFreeParserCtxt(pctxt);
+	xmlFree(URL);
+	return(-1);
+    }
+    buf = inputStream->buf;
+    if (buf == NULL) {
+	xmlFreeInputStream (inputStream);
+	xmlFreeParserCtxt(pctxt);
+	xmlFree(URL);
+	return(-1);
+    }
+    if (buf->encoder)
+	xmlCharEncCloseFunc(buf->encoder);
+    buf->encoder = xmlGetCharEncodingHandler(enc);
+    node = xmlNewText(NULL);
+
+    /*
+     * Scan all chars from the resource and add the to the node
+     */
+xinclude_multibyte_fallback:
+    while (xmlParserInputBufferRead(buf, 128) > 0) {
+	int len;
+	const xmlChar *content;
+
+	content = xmlBufContent(buf->buffer);
+	len = xmlBufLength(buf->buffer);
+	for (i = 0;i < len;) {
+	    int cur;
+	    int l;
+
+	    cur = xmlStringCurrentChar(NULL, &content[i], &l);
+	    if (!IS_CHAR(cur)) {
+		/* Handle splitted multibyte char at buffer boundary */
+		if (((len - i) < 4) && (!xinclude_multibyte_fallback_used)) {
+		    xinclude_multibyte_fallback_used = 1;
+		    xmlBufShrink(buf->buffer, i);
+		    goto xinclude_multibyte_fallback;
+		} else {
+		    xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+				   XML_XINCLUDE_INVALID_CHAR,
+				   "%s contains invalid char\n", URL);
+		    xmlFreeParserInputBuffer(buf);
+		    xmlFree(URL);
+		    return(-1);
+		}
+	    } else {
+		xinclude_multibyte_fallback_used = 0;
+		xmlNodeAddContentLen(node, &content[i], l);
+	    }
+	    i += l;
+	}
+	xmlBufShrink(buf->buffer, len);
+    }
+    xmlFreeParserCtxt(pctxt);
+    xmlXIncludeAddTxt(ctxt, node, URL);
+    xmlFreeInputStream(inputStream);
+
+loaded:
+    /*
+     * Add the element as the replacement copy.
+     */
+    ctxt->incTab[nr]->inc = node;
+    xmlFree(URL);
+    return(0);
+}
+
+/**
+ * xmlXIncludeLoadFallback:
+ * @ctxt:  the XInclude context
+ * @fallback:  the fallback node
+ * @nr:  the xinclude node number
+ *
+ * Load the content of the fallback node, and store the result
+ * in the XInclude context
+ *
+ * Returns 0 in case of success, -1 in case of failure
+ */
+static int
+xmlXIncludeLoadFallback(xmlXIncludeCtxtPtr ctxt, xmlNodePtr fallback, int nr) {
+    xmlXIncludeCtxtPtr newctxt;
+    int ret = 0;
+
+    if ((fallback == NULL) || (fallback->type == XML_NAMESPACE_DECL) ||
+        (ctxt == NULL))
+	return(-1);
+    if (fallback->children != NULL) {
+	/*
+	 * It's possible that the fallback also has 'includes'
+	 * (Bug 129969), so we re-process the fallback just in case
+	 */
+	newctxt = xmlXIncludeNewContext(ctxt->doc);
+	if (newctxt == NULL)
+	    return (-1);
+	newctxt->_private = ctxt->_private;
+	newctxt->base = xmlStrdup(ctxt->base);	/* Inherit the base from the existing context */
+	xmlXIncludeSetFlags(newctxt, ctxt->parseFlags);
+	ret = xmlXIncludeDoProcess(newctxt, ctxt->doc, fallback->children);
+	if (ctxt->nbErrors > 0)
+	    ret = -1;
+	else if (ret > 0)
+	    ret = 0;	/* xmlXIncludeDoProcess can return +ve number */
+	xmlXIncludeFreeContext(newctxt);
+
+	ctxt->incTab[nr]->inc = xmlDocCopyNodeList(ctxt->doc,
+	                                           fallback->children);
+    } else {
+        ctxt->incTab[nr]->inc = NULL;
+	ctxt->incTab[nr]->emptyFb = 1;	/* flag empty callback */
+    }
+    return(ret);
+}
+
+/************************************************************************
+ *									*
+ *			XInclude Processing				*
+ *									*
+ ************************************************************************/
+
+/**
+ * xmlXIncludePreProcessNode:
+ * @ctxt: an XInclude context
+ * @node: an XInclude node
+ *
+ * Implement the XInclude preprocessing, currently just adding the element
+ * for further processing.
+ *
+ * Returns the result list or NULL in case of error
+ */
+static xmlNodePtr
+xmlXIncludePreProcessNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
+    xmlXIncludeAddNode(ctxt, node);
+    return(NULL);
+}
+
+/**
+ * xmlXIncludeLoadNode:
+ * @ctxt: an XInclude context
+ * @nr: the node number
+ *
+ * Find and load the infoset replacement for the given node.
+ *
+ * Returns 0 if substitution succeeded, -1 if some processing failed
+ */
+static int
+xmlXIncludeLoadNode(xmlXIncludeCtxtPtr ctxt, int nr) {
+    xmlNodePtr cur;
+    xmlChar *href;
+    xmlChar *parse;
+    xmlChar *base;
+    xmlChar *oldBase;
+    xmlChar *URI;
+    int xml = 1; /* default Issue 64 */
+    int ret;
+
+    if (ctxt == NULL)
+	return(-1);
+    if ((nr < 0) || (nr >= ctxt->incNr))
+	return(-1);
+    cur = ctxt->incTab[nr]->ref;
+    if (cur == NULL)
+	return(-1);
+
+    /*
+     * read the attributes
+     */
+    href = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_HREF);
+    if (href == NULL) {
+	href = xmlStrdup(BAD_CAST ""); /* @@@@ href is now optional */
+	if (href == NULL)
+	    return(-1);
+    }
+    parse = xmlXIncludeGetProp(ctxt, cur, XINCLUDE_PARSE);
+    if (parse != NULL) {
+	if (xmlStrEqual(parse, XINCLUDE_PARSE_XML))
+	    xml = 1;
+	else if (xmlStrEqual(parse, XINCLUDE_PARSE_TEXT))
+	    xml = 0;
+	else {
+	    xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	                   XML_XINCLUDE_PARSE_VALUE,
+			   "invalid value %s for 'parse'\n", parse);
+	    if (href != NULL)
+		xmlFree(href);
+	    if (parse != NULL)
+		xmlFree(parse);
+	    return(-1);
+	}
+    }
+
+    /*
+     * compute the URI
+     */
+    base = xmlNodeGetBase(ctxt->doc, cur);
+    if (base == NULL) {
+	URI = xmlBuildURI(href, ctxt->doc->URL);
+    } else {
+	URI = xmlBuildURI(href, base);
+    }
+    if (URI == NULL) {
+	xmlChar *escbase;
+	xmlChar *eschref;
+	/*
+	 * Some escaping may be needed
+	 */
+	escbase = xmlURIEscape(base);
+	eschref = xmlURIEscape(href);
+	URI = xmlBuildURI(eschref, escbase);
+	if (escbase != NULL)
+	    xmlFree(escbase);
+	if (eschref != NULL)
+	    xmlFree(eschref);
+    }
+    if (URI == NULL) {
+	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	               XML_XINCLUDE_HREF_URI, "failed build URL\n", NULL);
+	if (parse != NULL)
+	    xmlFree(parse);
+	if (href != NULL)
+	    xmlFree(href);
+	if (base != NULL)
+	    xmlFree(base);
+	return(-1);
+    }
+#ifdef DEBUG_XINCLUDE
+    xmlGenericError(xmlGenericErrorContext, "parse: %s\n",
+	    xml ? "xml": "text");
+    xmlGenericError(xmlGenericErrorContext, "URI: %s\n", URI);
+#endif
+
+    /*
+     * Save the base for this include (saving the current one)
+     */
+    oldBase = ctxt->base;
+    ctxt->base = base;
+
+    if (xml) {
+	ret = xmlXIncludeLoadDoc(ctxt, URI, nr);
+	/* xmlXIncludeGetFragment(ctxt, cur, URI); */
+    } else {
+	ret = xmlXIncludeLoadTxt(ctxt, URI, nr);
+    }
+
+    /*
+     * Restore the original base before checking for fallback
+     */
+    ctxt->base = oldBase;
+
+    if (ret < 0) {
+	xmlNodePtr children;
+
+	/*
+	 * Time to try a fallback if availble
+	 */
+#ifdef DEBUG_XINCLUDE
+	xmlGenericError(xmlGenericErrorContext, "error looking for fallback\n");
+#endif
+	children = cur->children;
+	while (children != NULL) {
+	    if ((children->type == XML_ELEMENT_NODE) &&
+		(children->ns != NULL) &&
+		(xmlStrEqual(children->name, XINCLUDE_FALLBACK)) &&
+		((xmlStrEqual(children->ns->href, XINCLUDE_NS)) ||
+		 (xmlStrEqual(children->ns->href, XINCLUDE_OLD_NS)))) {
+		ret = xmlXIncludeLoadFallback(ctxt, children, nr);
+		if (ret == 0)
+		    break;
+	    }
+	    children = children->next;
+	}
+    }
+    if (ret < 0) {
+	xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	               XML_XINCLUDE_NO_FALLBACK,
+		       "could not load %s, and no fallback was found\n",
+		       URI);
+    }
+
+    /*
+     * Cleanup
+     */
+    if (URI != NULL)
+	xmlFree(URI);
+    if (parse != NULL)
+	xmlFree(parse);
+    if (href != NULL)
+	xmlFree(href);
+    if (base != NULL)
+	xmlFree(base);
+    return(0);
+}
+
+/**
+ * xmlXIncludeIncludeNode:
+ * @ctxt: an XInclude context
+ * @nr: the node number
+ *
+ * Inplement the infoset replacement for the given node
+ *
+ * Returns 0 if substitution succeeded, -1 if some processing failed
+ */
+static int
+xmlXIncludeIncludeNode(xmlXIncludeCtxtPtr ctxt, int nr) {
+    xmlNodePtr cur, end, list, tmp;
+
+    if (ctxt == NULL)
+	return(-1);
+    if ((nr < 0) || (nr >= ctxt->incNr))
+	return(-1);
+    cur = ctxt->incTab[nr]->ref;
+    if ((cur == NULL) || (cur->type == XML_NAMESPACE_DECL))
+	return(-1);
+
+    /*
+     * If we stored an XPointer a late computation may be needed
+     */
+    if ((ctxt->incTab[nr]->inc == NULL) &&
+	(ctxt->incTab[nr]->xptr != NULL)) {
+	ctxt->incTab[nr]->inc =
+	    xmlXIncludeCopyXPointer(ctxt, ctxt->doc, ctxt->doc,
+		                    ctxt->incTab[nr]->xptr);
+	xmlXPathFreeObject(ctxt->incTab[nr]->xptr);
+	ctxt->incTab[nr]->xptr = NULL;
+    }
+    list = ctxt->incTab[nr]->inc;
+    ctxt->incTab[nr]->inc = NULL;
+
+    /*
+     * Check against the risk of generating a multi-rooted document
+     */
+    if ((cur->parent != NULL) &&
+	(cur->parent->type != XML_ELEMENT_NODE)) {
+	int nb_elem = 0;
+
+	tmp = list;
+	while (tmp != NULL) {
+	    if (tmp->type == XML_ELEMENT_NODE)
+		nb_elem++;
+	    tmp = tmp->next;
+	}
+	if (nb_elem > 1) {
+	    xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	                   XML_XINCLUDE_MULTIPLE_ROOT,
+		       "XInclude error: would result in multiple root nodes\n",
+			   NULL);
+	    return(-1);
+	}
+    }
+
+    if (ctxt->parseFlags & XML_PARSE_NOXINCNODE) {
+	/*
+	 * Add the list of nodes
+	 */
+	while (list != NULL) {
+	    end = list;
+	    list = list->next;
+
+	    xmlAddPrevSibling(cur, end);
+	}
+	xmlUnlinkNode(cur);
+	xmlFreeNode(cur);
+    } else {
+	/*
+	 * Change the current node as an XInclude start one, and add an
+	 * XInclude end one
+	 */
+	cur->type = XML_XINCLUDE_START;
+	end = xmlNewDocNode(cur->doc, cur->ns, cur->name, NULL);
+	if (end == NULL) {
+	    xmlXIncludeErr(ctxt, ctxt->incTab[nr]->ref,
+	                   XML_XINCLUDE_BUILD_FAILED,
+			   "failed to build node\n", NULL);
+	    return(-1);
+	}
+	end->type = XML_XINCLUDE_END;
+	xmlAddNextSibling(cur, end);
+
+	/*
+	 * Add the list of nodes
+	 */
+	while (list != NULL) {
+	    cur = list;
+	    list = list->next;
+
+	    xmlAddPrevSibling(end, cur);
+	}
+    }
+
+
+    return(0);
+}
+
+/**
+ * xmlXIncludeTestNode:
+ * @ctxt: the XInclude processing context
+ * @node: an XInclude node
+ *
+ * test if the node is an XInclude node
+ *
+ * Returns 1 true, 0 otherwise
+ */
+static int
+xmlXIncludeTestNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
+    if (node == NULL)
+	return(0);
+    if (node->type != XML_ELEMENT_NODE)
+	return(0);
+    if (node->ns == NULL)
+	return(0);
+    if ((xmlStrEqual(node->ns->href, XINCLUDE_NS)) ||
+        (xmlStrEqual(node->ns->href, XINCLUDE_OLD_NS))) {
+	if (xmlStrEqual(node->ns->href, XINCLUDE_OLD_NS)) {
+	    if (ctxt->legacy == 0) {
+#if 0 /* wait for the XML Core Working Group to get something stable ! */
+		xmlXIncludeWarn(ctxt, node, XML_XINCLUDE_DEPRECATED_NS,
+	               "Deprecated XInclude namespace found, use %s",
+		                XINCLUDE_NS);
+#endif
+	        ctxt->legacy = 1;
+	    }
+	}
+	if (xmlStrEqual(node->name, XINCLUDE_NODE)) {
+	    xmlNodePtr child = node->children;
+	    int nb_fallback = 0;
+
+	    while (child != NULL) {
+		if ((child->type == XML_ELEMENT_NODE) &&
+		    (child->ns != NULL) &&
+		    ((xmlStrEqual(child->ns->href, XINCLUDE_NS)) ||
+		     (xmlStrEqual(child->ns->href, XINCLUDE_OLD_NS)))) {
+		    if (xmlStrEqual(child->name, XINCLUDE_NODE)) {
+			xmlXIncludeErr(ctxt, node,
+			               XML_XINCLUDE_INCLUDE_IN_INCLUDE,
+				       "%s has an 'include' child\n",
+				       XINCLUDE_NODE);
+			return(0);
+		    }
+		    if (xmlStrEqual(child->name, XINCLUDE_FALLBACK)) {
+			nb_fallback++;
+		    }
+		}
+		child = child->next;
+	    }
+	    if (nb_fallback > 1) {
+		xmlXIncludeErr(ctxt, node, XML_XINCLUDE_FALLBACKS_IN_INCLUDE,
+			       "%s has multiple fallback children\n",
+		               XINCLUDE_NODE);
+		return(0);
+	    }
+	    return(1);
+	}
+	if (xmlStrEqual(node->name, XINCLUDE_FALLBACK)) {
+	    if ((node->parent == NULL) ||
+		(node->parent->type != XML_ELEMENT_NODE) ||
+		(node->parent->ns == NULL) ||
+		((!xmlStrEqual(node->parent->ns->href, XINCLUDE_NS)) &&
+		 (!xmlStrEqual(node->parent->ns->href, XINCLUDE_OLD_NS))) ||
+		(!xmlStrEqual(node->parent->name, XINCLUDE_NODE))) {
+		xmlXIncludeErr(ctxt, node,
+		               XML_XINCLUDE_FALLBACK_NOT_IN_INCLUDE,
+			       "%s is not the child of an 'include'\n",
+			       XINCLUDE_FALLBACK);
+	    }
+	}
+    }
+    return(0);
+}
+
+/**
+ * xmlXIncludeDoProcess:
+ * @ctxt: the XInclude processing context
+ * @doc: an XML document
+ * @tree: the top of the tree to process
+ *
+ * Implement the XInclude substitution on the XML document @doc
+ *
+ * Returns 0 if no substitution were done, -1 if some processing failed
+ *    or the number of substitutions done.
+ */
+static int
+xmlXIncludeDoProcess(xmlXIncludeCtxtPtr ctxt, xmlDocPtr doc, xmlNodePtr tree) {
+    xmlNodePtr cur;
+    int ret = 0;
+    int i, start;
+
+    if ((doc == NULL) || (tree == NULL) || (tree->type == XML_NAMESPACE_DECL))
+	return(-1);
+    if (ctxt == NULL)
+	return(-1);
+
+    if (doc->URL != NULL) {
+	ret = xmlXIncludeURLPush(ctxt, doc->URL);
+	if (ret < 0)
+	    return(-1);
+    }
+    start = ctxt->incNr;
+
+    /*
+     * First phase: lookup the elements in the document
+     */
+    cur = tree;
+    if (xmlXIncludeTestNode(ctxt, cur) == 1)
+	xmlXIncludePreProcessNode(ctxt, cur);
+    while ((cur != NULL) && (cur != tree->parent)) {
+	/* TODO: need to work on entities -> stack */
+	if ((cur->children != NULL) &&
+	    (cur->children->type != XML_ENTITY_DECL) &&
+	    (cur->children->type != XML_XINCLUDE_START) &&
+	    (cur->children->type != XML_XINCLUDE_END)) {
+	    cur = cur->children;
+	    if (xmlXIncludeTestNode(ctxt, cur))
+		xmlXIncludePreProcessNode(ctxt, cur);
+	} else if (cur->next != NULL) {
+	    cur = cur->next;
+	    if (xmlXIncludeTestNode(ctxt, cur))
+		xmlXIncludePreProcessNode(ctxt, cur);
+	} else {
+	    if (cur == tree)
+	        break;
+	    do {
+		cur = cur->parent;
+		if ((cur == NULL) || (cur == tree->parent))
+		    break; /* do */
+		if (cur->next != NULL) {
+		    cur = cur->next;
+		    if (xmlXIncludeTestNode(ctxt, cur))
+			xmlXIncludePreProcessNode(ctxt, cur);
+		    break; /* do */
+		}
+	    } while (cur != NULL);
+	}
+    }
+
+    /*
+     * Second Phase : collect the infosets fragments
+     */
+    for (i = start;i < ctxt->incNr; i++) {
+        xmlXIncludeLoadNode(ctxt, i);
+	ret++;
+    }
+
+    /*
+     * Third phase: extend the original document infoset.
+     *
+     * Originally we bypassed the inclusion if there were any errors
+     * encountered on any of the XIncludes.  A bug was raised (bug
+     * 132588) requesting that we output the XIncludes without error,
+     * so the check for inc!=NULL || xptr!=NULL was put in.  This may
+     * give some other problems in the future, but for now it seems to
+     * work ok.
+     *
+     */
+    for (i = ctxt->incBase;i < ctxt->incNr; i++) {
+	if ((ctxt->incTab[i]->inc != NULL) ||
+		(ctxt->incTab[i]->xptr != NULL) ||
+		(ctxt->incTab[i]->emptyFb != 0))	/* (empty fallback) */
+	    xmlXIncludeIncludeNode(ctxt, i);
+    }
+
+    if (doc->URL != NULL)
+	xmlXIncludeURLPop(ctxt);
+    return(ret);
+}
+
+/**
+ * xmlXIncludeSetFlags:
+ * @ctxt:  an XInclude processing context
+ * @flags: a set of xmlParserOption used for parsing XML includes
+ *
+ * Set the flags used for further processing of XML resources.
+ *
+ * Returns 0 in case of success and -1 in case of error.
+ */
+int
+xmlXIncludeSetFlags(xmlXIncludeCtxtPtr ctxt, int flags) {
+    if (ctxt == NULL)
+        return(-1);
+    ctxt->parseFlags = flags;
+    return(0);
+}
+
+/**
+ * xmlXIncludeProcessTreeFlagsData:
+ * @tree: an XML node
+ * @flags: a set of xmlParserOption used for parsing XML includes
+ * @data: application data that will be passed to the parser context
+ *        in the _private field of the parser context(s)
+ *
+ * Implement the XInclude substitution on the XML node @tree
+ *
+ * Returns 0 if no substitution were done, -1 if some processing failed
+ *    or the number of substitutions done.
+ */
+
+int
+xmlXIncludeProcessTreeFlagsData(xmlNodePtr tree, int flags, void *data) {
+    xmlXIncludeCtxtPtr ctxt;
+    int ret = 0;
+
+    if ((tree == NULL) || (tree->type == XML_NAMESPACE_DECL) ||
+        (tree->doc == NULL))
+        return(-1);
+
+    ctxt = xmlXIncludeNewContext(tree->doc);
+    if (ctxt == NULL)
+        return(-1);
+    ctxt->_private = data;
+    ctxt->base = xmlStrdup((xmlChar *)tree->doc->URL);
+    xmlXIncludeSetFlags(ctxt, flags);
+    ret = xmlXIncludeDoProcess(ctxt, tree->doc, tree);
+    if ((ret >= 0) && (ctxt->nbErrors > 0))
+        ret = -1;
+
+    xmlXIncludeFreeContext(ctxt);
+    return(ret);
+}
+
+/**
+ * xmlXIncludeProcessFlagsData:
+ * @doc: an XML document
+ * @flags: a set of xmlParserOption used for parsing XML includes
+ * @data: application data that will be passed to the parser context
+ *        in the _private field of the parser context(s)
+ *
+ * Implement the XInclude substitution on the XML document @doc
+ *
+ * Returns 0 if no substitution were done, -1 if some processing failed
+ *    or the number of substitutions done.
+ */
+int
+xmlXIncludeProcessFlagsData(xmlDocPtr doc, int flags, void *data) {
+    xmlNodePtr tree;
+
+    if (doc == NULL)
+	return(-1);
+    tree = xmlDocGetRootElement(doc);
+    if (tree == NULL)
+	return(-1);
+    return(xmlXIncludeProcessTreeFlagsData(tree, flags, data));
+}
+
+/**
+ * xmlXIncludeProcessFlags:
+ * @doc: an XML document
+ * @flags: a set of xmlParserOption used for parsing XML includes
+ *
+ * Implement the XInclude substitution on the XML document @doc
+ *
+ * Returns 0 if no substitution were done, -1 if some processing failed
+ *    or the number of substitutions done.
+ */
+int
+xmlXIncludeProcessFlags(xmlDocPtr doc, int flags) {
+    return xmlXIncludeProcessFlagsData(doc, flags, NULL);
+}
+
+/**
+ * xmlXIncludeProcess:
+ * @doc: an XML document
+ *
+ * Implement the XInclude substitution on the XML document @doc
+ *
+ * Returns 0 if no substitution were done, -1 if some processing failed
+ *    or the number of substitutions done.
+ */
+int
+xmlXIncludeProcess(xmlDocPtr doc) {
+    return(xmlXIncludeProcessFlags(doc, 0));
+}
+
+/**
+ * xmlXIncludeProcessTreeFlags:
+ * @tree: a node in an XML document
+ * @flags: a set of xmlParserOption used for parsing XML includes
+ *
+ * Implement the XInclude substitution for the given subtree
+ *
+ * Returns 0 if no substitution were done, -1 if some processing failed
+ *    or the number of substitutions done.
+ */
+int
+xmlXIncludeProcessTreeFlags(xmlNodePtr tree, int flags) {
+    xmlXIncludeCtxtPtr ctxt;
+    int ret = 0;
+
+    if ((tree == NULL) || (tree->type == XML_NAMESPACE_DECL) ||
+        (tree->doc == NULL))
+	return(-1);
+    ctxt = xmlXIncludeNewContext(tree->doc);
+    if (ctxt == NULL)
+	return(-1);
+    ctxt->base = xmlNodeGetBase(tree->doc, tree);
+    xmlXIncludeSetFlags(ctxt, flags);
+    ret = xmlXIncludeDoProcess(ctxt, tree->doc, tree);
+    if ((ret >= 0) && (ctxt->nbErrors > 0))
+	ret = -1;
+
+    xmlXIncludeFreeContext(ctxt);
+    return(ret);
+}
+
+/**
+ * xmlXIncludeProcessTree:
+ * @tree: a node in an XML document
+ *
+ * Implement the XInclude substitution for the given subtree
+ *
+ * Returns 0 if no substitution were done, -1 if some processing failed
+ *    or the number of substitutions done.
+ */
+int
+xmlXIncludeProcessTree(xmlNodePtr tree) {
+    return(xmlXIncludeProcessTreeFlags(tree, 0));
+}
+
+/**
+ * xmlXIncludeProcessNode:
+ * @ctxt: an existing XInclude context
+ * @node: a node in an XML document
+ *
+ * Implement the XInclude substitution for the given subtree reusing
+ * the informations and data coming from the given context.
+ *
+ * Returns 0 if no substitution were done, -1 if some processing failed
+ *    or the number of substitutions done.
+ */
+int
+xmlXIncludeProcessNode(xmlXIncludeCtxtPtr ctxt, xmlNodePtr node) {
+    int ret = 0;
+
+    if ((node == NULL) || (node->type == XML_NAMESPACE_DECL) ||
+        (node->doc == NULL) || (ctxt == NULL))
+	return(-1);
+    ret = xmlXIncludeDoProcess(ctxt, node->doc, node);
+    if ((ret >= 0) && (ctxt->nbErrors > 0))
+	ret = -1;
+    return(ret);
+}
+
+#else /* !LIBXML_XINCLUDE_ENABLED */
+#endif
+#define bottom_xinclude
+#include "elfgcchack.h"