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-<?xml version="1.0" encoding="iso-8859-1"?>
-<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
- "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
-<html>
-<head>
-<!-- Copyright 1999,2000 Clark Cooper <coopercc@netheaven.com>
- All rights reserved.
- This is free software. You may distribute or modify according to
- the terms of the MIT/X License -->
- <title>Expat XML Parser</title>
- <meta name="author" content="Clark Cooper, coopercc@netheaven.com" />
- <meta http-equiv="Content-Style-Type" content="text/css" />
- <link href="style.css" rel="stylesheet" type="text/css" />
-</head>
-<body>
-<h1>Expat XML Parser</h1>
-
-<p>Expat is a library, written in C, for parsing XML documents. It's
-the underlying XML parser for the open source Mozilla project, Perl's
-<code>XML::Parser</code>, Python's <code>xml.parsers.expat</code>, and
-other open-source XML parsers.</p>
-
-<p>This library is the creation of James Clark, who's also given us
-groff (an nroff look-alike), Jade (an implemention of ISO's DSSSL
-stylesheet language for SGML), XP (a Java XML parser package), XT (a
-Java XSL engine). James was also the technical lead on the XML
-Working Group at W3C that produced the XML specification.</p>
-
-<p>This is free software, licensed under the <a
-href="../COPYING">MIT/X Consortium license</a>. You may download it
-from <a href="http://www.libexpat.org/">the Expat home page</a>.
-</p>
-
-<p>The bulk of this document was originally commissioned as an article by
-<a href="http://www.xml.com/">XML.com</a>. They graciously allowed
-Clark Cooper to retain copyright and to distribute it with Expat.</p>
-
-<hr />
-<h2>Table of Contents</h2>
-<ul>
- <li><a href="#overview">Overview</a></li>
- <li><a href="#building">Building and Installing</a></li>
- <li><a href="#using">Using Expat</a></li>
- <li><a href="#reference">Reference</a>
- <ul>
- <li><a href="#creation">Parser Creation Functions</a>
- <ul>
- <li><a href="#XML_ParserCreate">XML_ParserCreate</a></li>
- <li><a href="#XML_ParserCreateNS">XML_ParserCreateNS</a></li>
- <li><a href="#XML_ParserCreate_MM">XML_ParserCreate_MM</a></li>
- <li><a href="#XML_ExternalEntityParserCreate">XML_ExternalEntityParserCreate</a></li>
- <li><a href="#XML_ParserFree">XML_ParserFree</a></li>
- <li><a href="#XML_ParserReset">XML_ParserReset</a></li>
- </ul>
- </li>
- <li><a href="#parsing">Parsing Functions</a>
- <ul>
- <li><a href="#XML_Parse">XML_Parse</a></li>
- <li><a href="#XML_ParseBuffer">XML_ParseBuffer</a></li>
- <li><a href="#XML_GetBuffer">XML_GetBuffer</a></li>
- </ul>
- </li>
- <li><a href="#setting">Handler Setting Functions</a>
- <ul>
- <li><a href="#XML_SetStartElementHandler">XML_SetStartElementHandler</a></li>
- <li><a href="#XML_SetEndElementHandler">XML_SetEndElementHandler</a></li>
- <li><a href="#XML_SetElementHandler">XML_SetElementHandler</a></li>
- <li><a href="#XML_SetCharacterDataHandler">XML_SetCharacterDataHandler</a></li>
- <li><a href="#XML_SetProcessingInstructionHandler">XML_SetProcessingInstructionHandler</a></li>
- <li><a href="#XML_SetCommentHandler">XML_SetCommentHandler</a></li>
- <li><a href="#XML_SetStartCdataSectionHandler">XML_SetStartCdataSectionHandler</a></li>
- <li><a href="#XML_SetEndCdataSectionHandler">XML_SetEndCdataSectionHandler</a></li>
- <li><a href="#XML_SetCdataSectionHandler">XML_SetCdataSectionHandler</a></li>
- <li><a href="#XML_SetDefaultHandler">XML_SetDefaultHandler</a></li>
- <li><a href="#XML_SetDefaultHandlerExpand">XML_SetDefaultHandlerExpand</a></li>
- <li><a href="#XML_SetExternalEntityRefHandler">XML_SetExternalEntityRefHandler</a></li>
- <li><a href="#XML_SetExternalEntityRefHandlerArg">XML_SetExternalEntityRefHandlerArg</a></li>
- <li><a href="#XML_SetSkippedEntityHandler">XML_SetSkippedEntityHandler</a></li>
- <li><a href="#XML_SetUnknownEncodingHandler">XML_SetUnknownEncodingHandler</a></li>
- <li><a href="#XML_SetStartNamespaceDeclHandler">XML_SetStartNamespaceDeclHandler</a></li>
- <li><a href="#XML_SetEndNamespaceDeclHandler">XML_SetEndNamespaceDeclHandler</a></li>
- <li><a href="#XML_SetNamespaceDeclHandler">XML_SetNamespaceDeclHandler</a></li>
- <li><a href="#XML_SetXmlDeclHandler">XML_SetXmlDeclHandler</a></li>
- <li><a href="#XML_SetStartDoctypeDeclHandler">XML_SetStartDoctypeDeclHandler</a></li>
- <li><a href="#XML_SetEndDoctypeDeclHandler">XML_SetEndDoctypeDeclHandler</a></li>
- <li><a href="#XML_SetDoctypeDeclHandler">XML_SetDoctypeDeclHandler</a></li>
- <li><a href="#XML_SetElementDeclHandler">XML_SetElementDeclHandler</a></li>
- <li><a href="#XML_SetAttlistDeclHandler">XML_SetAttlistDeclHandler</a></li>
- <li><a href="#XML_SetEntityDeclHandler">XML_SetEntityDeclHandler</a></li>
- <li><a href="#XML_SetUnparsedEntityDeclHandler">XML_SetUnparsedEntityDeclHandler</a></li>
- <li><a href="#XML_SetNotationDeclHandler">XML_SetNotationDeclHandler</a></li>
- <li><a href="#XML_SetNotStandaloneHandler">XML_SetNotStandaloneHandler</a></li>
- </ul>
- </li>
- <li><a href="#position">Parse Position and Error Reporting Functions</a>
- <ul>
- <li><a href="#XML_GetErrorCode">XML_GetErrorCode</a></li>
- <li><a href="#XML_ErrorString">XML_ErrorString</a></li>
- <li><a href="#XML_GetCurrentByteIndex">XML_GetCurrentByteIndex</a></li>
- <li><a href="#XML_GetCurrentLineNumber">XML_GetCurrentLineNumber</a></li>
- <li><a href="#XML_GetCurrentColumnNumber">XML_GetCurrentColumnNumber</a></li>
- <li><a href="#XML_GetCurrentByteCount">XML_GetCurrentByteCount</a></li>
- <li><a href="#XML_GetInputContext">XML_GetInputContext</a></li>
- </ul>
- </li>
- <li><a href="#miscellaneous">Miscellaneous Functions</a>
- <ul>
- <li><a href="#XML_SetUserData">XML_SetUserData</a></li>
- <li><a href="#XML_GetUserData">XML_GetUserData</a></li>
- <li><a href="#XML_UseParserAsHandlerArg">XML_UseParserAsHandlerArg</a></li>
- <li><a href="#XML_SetBase">XML_SetBase</a></li>
- <li><a href="#XML_GetBase">XML_GetBase</a></li>
- <li><a href="#XML_GetSpecifiedAttributeCount">XML_GetSpecifiedAttributeCount</a></li>
- <li><a href="#XML_GetIdAttributeIndex">XML_GetIdAttributeIndex</a></li>
- <li><a href="#XML_SetEncoding">XML_SetEncoding</a></li>
- <li><a href="#XML_SetParamEntityParsing">XML_SetParamEntityParsing</a></li>
- <li><a href="#XML_UseForeignDTD">XML_UseForeignDTD</a></li>
- <li><a href="#XML_SetReturnNSTriplet">XML_SetReturnNSTriplet</a></li>
- <li><a href="#XML_DefaultCurrent">XML_DefaultCurrent</a></li>
- <li><a href="#XML_ExpatVersion">XML_ExpatVersion</a></li>
- <li><a href="#XML_ExpatVersionInfo">XML_ExpatVersionInfo</a></li>
- <li><a href="#XML_GetFeatureList">XML_GetFeatureList</a></li>
- <li><a href="#XML_FreeContentModel">XML_FreeContentModel</a></li>
- <li><a href="#XML_MemMalloc">XML_MemMalloc</a></li>
- <li><a href="#XML_MemRealloc">XML_MemRealloc</a></li>
- <li><a href="#XML_MemFree">XML_MemFree</a></li>
- </ul>
- </li>
- </ul>
- </li>
-</ul>
-
-<hr />
-<h2><a name="overview">Overview</a></h2>
-
-<p>Expat is a stream-oriented parser. You register callback (or
-handler) functions with the parser and then start feeding it the
-document. As the parser recognizes parts of the document, it will
-call the appropriate handler for that part (if you've registered one.)
-The document is fed to the parser in pieces, so you can start parsing
-before you have all the document. This also allows you to parse really
-huge documents that won't fit into memory.</p>
-
-<p>Expat can be intimidating due to the many kinds of handlers and
-options you can set. But you only need to learn four functions in
-order to do 90% of what you'll want to do with it:</p>
-
-<dl>
-
-<dt><code><a href= "#XML_ParserCreate"
- >XML_ParserCreate</a></code></dt>
- <dd>Create a new parser object.</dd>
-
-<dt><code><a href= "#XML_SetElementHandler"
- >XML_SetElementHandler</a></code></dt>
- <dd>Set handlers for start and end tags.</dd>
-
-<dt><code><a href= "#XML_SetCharacterDataHandler"
- >XML_SetCharacterDataHandler</a></code></dt>
- <dd>Set handler for text.</dd>
-
-<dt><code><a href= "#XML_Parse"
- >XML_Parse</a></code></dt>
- <dd>Pass a buffer full of document to the parser</dd>
-</dl>
-
-<p>These functions and others are described in the <a
-href="#reference">reference</a> part of this document. The reference
-section also describes in detail the parameters passed to the
-different types of handlers.</p>
-
-<p>Let's look at a very simple example program that only uses 3 of the
-above functions (it doesn't need to set a character handler.) The
-program <a href="../examples/outline.c">outline.c</a> prints an
-element outline, indenting child elements to distinguish them from the
-parent element that contains them. The start handler does all the
-work. It prints two indenting spaces for every level of ancestor
-elements, then it prints the element and attribute
-information. Finally it increments the global <code>Depth</code>
-variable.</p>
-
-<pre class="eg">
-int Depth;
-
-void
-start(void *data, const char *el, const char **attr) {
- int i;
-
- for (i = 0; i &lt; Depth; i++)
- printf(" ");
-
- printf("%s", el);
-
- for (i = 0; attr[i]; i += 2) {
- printf(" %s='%s'", attr[i], attr[i + 1]);
- }
-
- printf("\n");
- Depth++;
-} /* End of start handler */
-</pre>
-
-<p>The end tag simply does the bookkeeping work of decrementing
-<code>Depth</code>.</p>
-<pre class="eg">
-void
-end(void *data, const char *el) {
- Depth--;
-} /* End of end handler */
-</pre>
-
-<p>After creating the parser, the main program just has the job of
-shoveling the document to the parser so that it can do its work.</p>
-
-<hr />
-<h2><a name="building">Building and Installing Expat</a></h2>
-
-<p>The Expat distribution comes as a compressed (with GNU gzip) tar
-file. You may download the latest version from <a href=
-"http://sourceforge.net/projects/expat/" >Source Forge</a>. After
-unpacking this, cd into the directory. Then follow either the Win32
-directions or Unix directions below.</p>
-
-<h3>Building under Win32</h3>
-
-<p>If you're using the GNU compiler under cygwin, follow the Unix
-directions in the next section. Otherwise if you have Microsoft's
-Developer Studio installed, then from Windows Explorer double-click on
-"expat.dsp" in the lib directory and build and install in the usual
-manner.</p>
-
-<p>Alternatively, you may download the Win32 binary package that
-contains the "expat.h" include file and a pre-built DLL.</p>
-
-<h3>Building under Unix (or GNU)</h3>
-
-<p>First you'll need to run the configure shell script in order to
-configure the Makefiles and headers for your system.</p>
-
-<p>If you're happy with all the defaults that configure picks for you,
-and you have permission on your system to install into /usr/local, you
-can install Expat with this sequence of commands:</p>
-
-<pre class="eg">
- ./configure
- make
- make install
-</pre>
-
-<p>There are some options that you can provide to this script, but the
-only one we'll mention here is the <code>--prefix</code> option. You
-can find out all the options available by running configure with just
-the <code>--help</code> option.</p>
-
-<p>By default, the configure script sets things up so that the library
-gets installed in <code>/usr/local/lib</code> and the associated
-header file in <code>/usr/local/include</code>. But if you were to
-give the option, <code>--prefix=/home/me/mystuff</code>, then the
-library and header would get installed in
-<code>/home/me/mystuff/lib</code> and
-<code>/home/me/mystuff/include</code> respectively.</p>
-
-<hr />
-<h2><a name="using">Using Expat</a></h2>
-
-<h3>Compiling and Linking Against Expat</h3>
-
-<p>Unless you installed Expat in a location not expected by your
-compiler and linker, all you have to do to use Expat in your programs
-is to include the Expat header (<code>#include &lt;expat.h&gt;</code>)
-in your files that make calls to it and to tell the linker that it
-needs to link against the Expat library. On Unix systems, this would
-usually be done with the <code>-lexpat</code> argument. Otherwise,
-you'll need to tell the compiler where to look for the Expat header
-and the linker where to find the Expat library. You may also need to
-take steps to tell the operating system where to find this libary at
-run time.</p>
-
-<p>On a Unix-based system, here's what a Makefile might look like when
-Expat is installed in a standard location:</p>
-
-<pre class="eg">
-CC=cc
-LDFLAGS=
-LIBS= -lexpat
-xmlapp: xmlapp.o
- $(CC) $(LDFLAGS) -o xmlapp xmlapp.o $(LIBS)
-</pre>
-
-<p>If you installed Expat in, say, <code>/home/me/mystuff</code>, then
-the Makefile would look like this:</p>
-
-<pre class="eg">
-CC=cc
-CFLAGS= -I/home/me/mystuff/include
-LDFLAGS=
-LIBS= -L/home/me/mystuff/lib -lexpat
-xmlapp: xmlapp.o
- $(CC) $(LDFLAGS) -o xmlapp xmlapp.o $(LIBS)
-</pre>
-
-<p>You'd also have to set the environment variable
-<code>LD_LIBRARY_PATH</code> to <code>/home/me/mystuff/lib</code> (or
-to <code>${LD_LIBRARY_PATH}:/home/me/mystuff/lib</code> if
-LD_LIBRARY_PATH already has some directories in it) in order to run
-your application.</p>
-
-<h3>Expat Basics</h3>
-
-<p>As we saw in the example in the overview, the first step in parsing
-an XML document with Expat is to create a parser object. There are <a
-href="#creation">three functions</a> in the Expat API for creating a
-parser object. However, only two of these (<code><a href=
-"#XML_ParserCreate" >XML_ParserCreate</a></code> and <code><a href=
-"#XML_ParserCreateNS" >XML_ParserCreateNS</a></code>) can be used for
-constructing a parser for a top-level document. The object returned
-by these functions is an opaque pointer (i.e. "expat.h" declares it as
-void *) to data with further internal structure. In order to free the
-memory associated with this object you must call <code><a href=
-"#XML_ParserFree" >XML_ParserFree</a></code>. Note that if you have
-provided any <a href="userdata">user data</a> that gets stored in the
-parser, then your application is responsible for freeing it prior to
-calling <code>XML_ParserFree</code>.</p>
-
-<p>The objects returned by the parser creation functions are good for
-parsing only one XML document or external parsed entity. If your
-application needs to parse many XML documents, then it needs to create
-a parser object for each one. The best way to deal with this is to
-create a higher level object that contains all the default
-initialization you want for your parser objects.</p>
-
-<p>Walking through a document hierarchy with a stream oriented parser
-will require a good stack mechanism in order to keep track of current
-context. For instance, to answer the simple question, "What element
-does this text belong to?" requires a stack, since the parser may have
-descended into other elements that are children of the current one and
-has encountered this text on the way out.</p>
-
-<p>The things you're likely to want to keep on a stack are the
-currently opened element and it's attributes. You push this
-information onto the stack in the start handler and you pop it off in
-the end handler.</p>
-
-<p>For some tasks, it is sufficient to just keep information on what
-the depth of the stack is (or would be if you had one.) The outline
-program shown above presents one example. Another such task would be
-skipping over a complete element. When you see the start tag for the
-element you want to skip, you set a skip flag and record the depth at
-which the element started. When the end tag handler encounters the
-same depth, the skipped element has ended and the flag may be
-cleared. If you follow the convention that the root element starts at
-1, then you can use the same variable for skip flag and skip
-depth.</p>
-
-<pre class="eg">
-void
-init_info(Parseinfo *info) {
- info->skip = 0;
- info->depth = 1;
- /* Other initializations here */
-} /* End of init_info */
-
-void
-rawstart(void *data, const char *el, const char **attr) {
- Parseinfo *inf = (Parseinfo *) data;
-
- if (! inf->skip) {
- if (should_skip(inf, el, attr)) {
- inf->skip = inf->depth;
- }
- else
- start(inf, el, attr); /* This does rest of start handling */
- }
-
- inf->depth++;
-} /* End of rawstart */
-
-void
-rawend(void *data, const char *el) {
- Parseinfo *inf = (Parseinfo *) data;
-
- inf->depth--;
-
- if (! inf->skip)
- end(inf, el); /* This does rest of end handling */
-
- if (inf->skip == inf->depth)
- inf->skip = 0;
-} /* End rawend */
-</pre>
-
-<p>Notice in the above example the difference in how depth is
-manipulated in the start and end handlers. The end tag handler should
-be the mirror image of the start tag handler. This is necessary to
-properly model containment. Since, in the start tag handler, we
-incremented depth <em>after</em> the main body of start tag code, then
-in the end handler, we need to manipulate it <em>before</em> the main
-body. If we'd decided to increment it first thing in the start
-handler, then we'd have had to decrement it last thing in the end
-handler.</p>
-
-<h3 id="userdata">Communicating between handlers</h3>
-
-<p>In order to be able to pass information between different handlers
-without using globals, you'll need to define a data structure to hold
-the shared variables. You can then tell Expat (with the <code><a href=
-"#XML_SetUserData" >XML_SetUserData</a></code> function) to pass a
-pointer to this structure to the handlers. This is typically the first
-argument received by most handlers.</p>
-
-<h3>XML Version</h3>
-
-<p>Expat is an XML 1.0 parser, and as such never complains based on
-the value of the <code>version</code> pseudo-attribute in the XML
-declaration, if present.</p>
-
-<p>If an application needs to check the version number (to support
-alternate processing), it should use the <code><a href=
-"#XML_SetXmlDeclHandler" >XML_SetXmlDeclHandler</a></code> function to
-set a handler that uses the information in the XML declaration to
-determine what to do. This example shows how to check that only a
-version number of <code>"1.0"</code> is accepted:</p>
-
-<pre class="eg">
-static int wrong_version;
-static XML_Parser parser;
-
-static void
-xmldecl_handler(void *userData,
- const XML_Char *version,
- const XML_Char *encoding,
- int standalone)
-{
- static const XML_Char Version_1_0[] = {'1', '.', '0', 0};
-
- int i;
-
- for (i = 0; i &lt; (sizeof(Version_1_0) / sizeof(Version_1_0[0])); ++i) {
- if (version[i] != Version_1_0[i]) {
- wrong_version = 1;
- /* also clear all other handlers: */
- XML_SetCharacterDataHandler(parser, NULL);
- ...
- return;
- }
- }
- ...
-}
-</pre>
-
-<h3>Namespace Processing</h3>
-
-<p>When the parser is created using the <code><a href=
-"#XML_ParserCreateNS" >XML_ParserCreateNS</a></code>, function, Expat
-performs namespace processing. Under namespace processing, Expat
-consumes <code>xmlns</code> and <code>xmlns:...</code> attributes,
-which declare namespaces for the scope of the element in which they
-occur. This means that your start handler will not see these
-attributes. Your application can still be informed of these
-declarations by setting namespace declaration handlers with <a href=
-"#XML_SetNamespaceDeclHandler"
-><code>XML_SetNamespaceDeclHandler</code></a>.</p>
-
-<p>Element type and attribute names that belong to a given namespace
-are passed to the appropriate handler in expanded form. By default
-this expanded form is a concatenation of the namespace URI, the
-separator character (which is the 2nd argument to <code><a href=
-"#XML_ParserCreateNS" >XML_ParserCreateNS</a></code>), and the local
-name (i.e. the part after the colon). Names with undeclared prefixes
-are passed through to the handlers unchanged, with the prefix and
-colon still attached. Unprefixed attribute names are never expanded,
-and unprefixed element names are only expanded when they are in the
-scope of a default namespace.</p>
-
-<p>However if <code><a href= "XML_SetReturnNSTriplet"
->XML_SetReturnNSTriplet</a></code> has been called with a non-zero
-<code>do_nst</code> parameter, then the expanded form for names with
-an explicit prefix is a concatenation of: URI, separator, local name,
-separator, prefix.</p>
-
-<p>You can set handlers for the start of a namespace declaration and
-for the end of a scope of a declaration with the <code><a href=
-"#XML_SetNamespaceDeclHandler" >XML_SetNamespaceDeclHandler</a></code>
-function. The StartNamespaceDeclHandler is called prior to the start
-tag handler and the EndNamespaceDeclHandler is called before the
-corresponding end tag that ends the namespace's scope. The namespace
-start handler gets passed the prefix and URI for the namespace. For a
-default namespace declaration (xmlns='...'), the prefix will be null.
-The URI will be null for the case where the default namespace is being
-unset. The namespace end handler just gets the prefix for the closing
-scope.</p>
-
-<p>These handlers are called for each declaration. So if, for
-instance, a start tag had three namespace declarations, then the
-StartNamespaceDeclHandler would be called three times before the start
-tag handler is called, once for each declaration.</p>
-
-<h3>Character Encodings</h3>
-
-<p>While XML is based on Unicode, and every XML processor is required
-to recognized UTF-8 and UTF-16 (1 and 2 byte encodings of Unicode),
-other encodings may be declared in XML documents or entities. For the
-main document, an XML declaration may contain an encoding
-declaration:</p>
-<pre>
-&lt;?xml version="1.0" encoding="ISO-8859-2"?&gt;
-</pre>
-
-<p>External parsed entities may begin with a text declaration, which
-looks like an XML declaration with just an encoding declaration:</p>
-<pre>
-&lt;?xml encoding="Big5"?&gt;
-</pre>
-
-<p>With Expat, you may also specify an encoding at the time of
-creating a parser. This is useful when the encoding information may
-come from a source outside the document itself (like a higher level
-protocol.)</p>
-
-<p><a name="builtin_encodings"></a>There are four built-in encodings
-in Expat:</p>
-<ul>
-<li>UTF-8</li>
-<li>UTF-16</li>
-<li>ISO-8859-1</li>
-<li>US-ASCII</li>
-</ul>
-
-<p>Anything else discovered in an encoding declaration or in the
-protocol encoding specified in the parser constructor, triggers a call
-to the <code>UnknownEncodingHandler</code>. This handler gets passed
-the encoding name and a pointer to an <code>XML_Encoding</code> data
-structure. Your handler must fill in this structure and return
-<code>XML_STATUS_OK</code> if it knows how to deal with the
-encoding. Otherwise the handler should return
-<code>XML_STATUS_ERROR</code>. The handler also gets passed a pointer
-to an optional application data structure that you may indicate when
-you set the handler.</p>
-
-<p>Expat places restrictions on character encodings that it can
-support by filling in the <code>XML_Encoding</code> structure.
-include file:</p>
-<ol>
-<li>Every ASCII character that can appear in a well-formed XML document
-must be represented by a single byte, and that byte must correspond to
-it's ASCII encoding (except for the characters $@\^'{}~)</li>
-<li>Characters must be encoded in 4 bytes or less.</li>
-<li>All characters encoded must have Unicode scalar values less than or
-equal to 65535 (0xFFFF)<em>This does not apply to the built-in support
-for UTF-16 and UTF-8</em></li>
-<li>No character may be encoded by more that one distinct sequence of
-bytes</li>
-</ol>
-
-<p><code>XML_Encoding</code> contains an array of integers that
-correspond to the 1st byte of an encoding sequence. If the value in
-the array for a byte is zero or positive, then the byte is a single
-byte encoding that encodes the Unicode scalar value contained in the
-array. A -1 in this array indicates a malformed byte. If the value is
--2, -3, or -4, then the byte is the beginning of a 2, 3, or 4 byte
-sequence respectively. Multi-byte sequences are sent to the convert
-function pointed at in the <code>XML_Encoding</code> structure. This
-function should return the Unicode scalar value for the sequence or -1
-if the sequence is malformed.</p>
-
-<p>One pitfall that novice Expat users are likely to fall into is that
-although Expat may accept input in various encodings, the strings that
-it passes to the handlers are always encoded in UTF-8 or UTF-16
-(depending on how Expat was compiled). Your application is responsible
-for any translation of these strings into other encodings.</p>
-
-<h3>Handling External Entity References</h3>
-
-<p>Expat does not read or parse external entities directly. Note that
-any external DTD is a special case of an external entity. If you've
-set no <code>ExternalEntityRefHandler</code>, then external entity
-references are silently ignored. Otherwise, it calls your handler with
-the information needed to read and parse the external entity.</p>
-
-<p>Your handler isn't actually responsible for parsing the entity, but
-it is responsible for creating a subsidiary parser with <code><a href=
-"#XML_ExternalEntityParserCreate"
->XML_ExternalEntityParserCreate</a></code> that will do the job. This
-returns an instance of <code>XML_Parser</code> that has handlers and
-other data structures initialized from the parent parser. You may then
-use <code><a href= "#XML_Parse" >XML_Parse</a></code> or <code><a
-href= "#XML_ParseBuffer">XML_ParseBuffer</a></code> calls against this
-parser. Since external entities my refer to other external entities,
-your handler should be prepared to be called recursively.</p>
-
-<h3>Parsing DTDs</h3>
-
-<p>In order to parse parameter entities, before starting the parse,
-you must call <code><a href= "#XML_SetParamEntityParsing"
->XML_SetParamEntityParsing</a></code> with one of the following
-arguments:</p>
-<dl>
-<dt><code>XML_PARAM_ENTITY_PARSING_NEVER</code></dt>
-<dd>Don't parse parameter entities or the external subset</dd>
-<dt><code>XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE</code></dt>
-<dd>Parse parameter entites and the external subset unless
-<code>standalone</code> was set to "yes" in the XML declaration.</dd>
-<dt><code>XML_PARAM_ENTITY_PARSING_ALWAYS</code></dt>
-<dd>Always parse parameter entities and the external subset</dd>
-</dl>
-
-<p>In order to read an external DTD, you also have to set an external
-entity reference handler as described above.</p>
-
-<hr />
-<!-- ================================================================ -->
-
-<h2><a name="reference">Expat Reference</a></h2>
-
-<h3><a name="creation">Parser Creation</a></h3>
-
-<pre class="fcndec" id="XML_ParserCreate">
-XML_Parser
-XML_ParserCreate(const XML_Char *encoding);
-</pre>
-<div class="fcndef">
-Construct a new parser. If encoding is non-null, it specifies a
-character encoding to use for the document. This overrides the document
-encoding declaration. There are four built-in encodings:
-<ul>
-<li>US-ASCII</li>
-<li>UTF-8</li>
-<li>UTF-16</li>
-<li>ISO-8859-1</li>
-</ul>
-Any other value will invoke a call to the UnknownEncodingHandler.
-</div>
-
-<pre class="fcndec" id="XML_ParserCreateNS">
-XML_Parser
-XML_ParserCreateNS(const XML_Char *encoding,
- XML_Char sep);
-</pre>
-<div class="fcndef">
-Constructs a new parser that has namespace processing in effect. Namespace
-expanded element names and attribute names are returned as a concatenation
-of the namespace URI, <em>sep</em>, and the local part of the name. This
-means that you should pick a character for <em>sep</em> that can't be
-part of a legal URI.</div>
-
-<pre class="fcndec" id="XML_ParserCreate_MM">
-XML_Parser
-XML_ParserCreate_MM(const XML_Char *encoding,
- const XML_Memory_Handling_Suite *ms,
- const XML_Char *sep);
-</pre>
-<pre class="signature">
-typedef struct {
- void *(*malloc_fcn)(size_t size);
- void *(*realloc_fcn)(void *ptr, size_t size);
- void (*free_fcn)(void *ptr);
-} XML_Memory_Handling_Suite;
-</pre>
-<div class="fcndef">
-<p>Construct a new parser using the suite of memory handling functions
-specified in <code>ms</code>. If <code>ms</code> is NULL, then use the
-standard set of memory management functions. If <code>sep</code> is
-non NULL, then namespace processing is enabled in the created parser
-and the character pointed at by sep is used as the separator between
-the namespace URI and the local part of the name.</p>
-</div>
-
-<pre class="fcndec" id="XML_ExternalEntityParserCreate">
-XML_Parser
-XML_ExternalEntityParserCreate(XML_Parser p,
- const XML_Char *context,
- const XML_Char *encoding);
-</pre>
-<div class="fcndef">
-Construct a new <code>XML_Parser</code> object for parsing an external
-general entity. Context is the context argument passed in a call to a
-ExternalEntityRefHandler. Other state information such as handlers,
-user data, namespace processing is inherited from the parser passed as
-the 1st argument. So you shouldn't need to call any of the behavior
-changing functions on this parser (unless you want it to act
-differently than the parent parser).
-</div>
-
-<pre class="fcndec" id="XML_ParserFree">
-void
-XML_ParserFree(XML_Parser p);
-</pre>
-<div class="fcndef">
-Free memory used by the parser. Your application is responsible for
-freeing any memory associated with <a href="#userdata">user data</a>.
-</div>
-
-<pre class="fcndec" id="XML_ParserReset">
-XML_Bool
-XML_ParserReset(XML_Parser p);
-</pre>
-<div class="fcndef">
-Clean up the memory structures maintained by the parser so that it may
-be used again. After this has been called, <code>parser</code> is
-ready to start parsing a new document. This function may not be used
-on a parser created using <code><a href=
-"#XML_ExternalEntityParserCreate" >XML_ExternalEntityParserCreate</a
-></code>; it will return <code>XML_FALSE</code> in that case. Returns
-<code>XML_TRUE</code> on success. Your application is responsible for
-dealing with any memory associated with <a href="#userdata">user data</a>.
-</div>
-
-<h3><a name="parsing">Parsing</a></h3>
-
-<p>To state the obvious: the three parsing functions <code><a href=
-"#XML_Parse" >XML_Parse</a></code>, <code><a href= "#XML_ParseBuffer"
->XML_ParseBuffer</a></code> and <code><a href= "#XML_GetBuffer"
->>XML_GetBuffer</a></code> must not be
-called from within a handler unless they operate on a separate parser
-instance, that is, one that did not call the handler. For example, it
-is OK to call the parsing functions from within an
-<code>XML_ExternalEntityRefHandler</code>, if they apply to the parser
-created by <code><a href= "#XML_ExternalEntityParserCreate"
->XML_ExternalEntityParserCreate</a></code>.</p>
-
-<pre class="fcndec" id="XML_Parse">
-XML_Status
-XML_Parse(XML_Parser p,
- const char *s,
- int len,
- int isFinal);
-</pre>
-<pre class="signature">
-enum XML_Status {
- XML_STATUS_ERROR = 0,
- XML_STATUS_OK = 1
-};
-</pre>
-<div class="fcndef">
-Parse some more of the document. The string <code>s</code> is a buffer
-containing part (or perhaps all) of the document. The number of bytes of s
-that are part of the document is indicated by <code>len</code>. This means
-that <code>s</code> doesn't have to be null terminated. It also means that
-if <code>len</code> is larger than the number of bytes in the block of
-memory that <code>s</code> points at, then a memory fault is likely. The
-<code>isFinal</code> parameter informs the parser that this is the last
-piece of the document. Frequently, the last piece is empty (i.e.
-<code>len</code> is zero.)
-If a parse error occurred, it returns <code>XML_STATUS_ERROR</code>.
-Otherwise it returns <code>XML_STATUS_OK</code> value.
-</div>
-
-<pre class="fcndec" id="XML_ParseBuffer">
-XML_Status
-XML_ParseBuffer(XML_Parser p,
- int len,
- int isFinal);
-</pre>
-<div class="fcndef">
-This is just like <code><a href= "#XML_Parse" >XML_Parse</a></code>,
-except in this case Expat provides the buffer. By obtaining the
-buffer from Expat with the <code><a href= "#XML_GetBuffer"
->XML_GetBuffer</a></code> function, the application can avoid double
-copying of the input.
-</div>
-
-<pre class="fcndec" id="XML_GetBuffer">
-void *
-XML_GetBuffer(XML_Parser p,
- int len);
-</pre>
-<div class="fcndef">
-Obtain a buffer of size <code>len</code> to read a piece of the document
-into. A NULL value is returned if Expat can't allocate enough memory for
-this buffer. This has to be called prior to every call to
-<code><a href= "#XML_ParseBuffer" >XML_ParseBuffer</a></code>. A
-typical use would look like this:
-
-<pre class="eg">
-for (;;) {
- int bytes_read;
- void *buff = XML_GetBuffer(p, BUFF_SIZE);
- if (buff == NULL) {
- /* handle error */
- }
-
- bytes_read = read(docfd, buff, BUFF_SIZE);
- if (bytes_read &lt; 0) {
- /* handle error */
- }
-
- if (! XML_ParseBuffer(p, bytes_read, bytes_read == 0)) {
- /* handle parse error */
- }
-
- if (bytes_read == 0)
- break;
-}
-</pre>
-</div>
-
-<h3><a name="setting">Handler Setting</a></h3>
-
-<p>Although handlers are typically set prior to parsing and left alone, an
-application may choose to set or change the handler for a parsing event
-while the parse is in progress. For instance, your application may choose
-to ignore all text not descended from a <code>para</code> element. One
-way it could do this is to set the character handler when a para start tag
-is seen, and unset it for the corresponding end tag.</p>
-
-<p>A handler may be <em>unset</em> by providing a NULL pointer to the
-appropriate handler setter. None of the handler setting functions have
-a return value.</p>
-
-<p>Your handlers will be receiving strings in arrays of type
-<code>XML_Char</code>. This type is defined in expat.h as <code>char
-*</code> and contains bytes encoding UTF-8. Note that you'll receive
-them in this form independent of the original encoding of the
-document.</p>
-
-<div class="handler">
-<pre class="setter" id="XML_SetStartElementHandler">
-XML_SetStartElementHandler(XML_Parser p,
- XML_StartElementHandler start);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_StartElementHandler)(void *userData,
- const XML_Char *name,
- const XML_Char **atts);
-</pre>
-<p>Set handler for start (and empty) tags. Attributes are passed to the start
-handler as a pointer to a vector of char pointers. Each attribute seen in
-a start (or empty) tag occupies 2 consecutive places in this vector: the
-attribute name followed by the attribute value. These pairs are terminated
-by a null pointer.</p>
-<p>Note that an empty tag generates a call to both start and end handlers
-(in that order).</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetEndElementHandler">
-XML_SetEndElementHandler(XML_Parser p,
- XML_EndElementHandler);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_EndElementHandler)(void *userData,
- const XML_Char *name);
-</pre>
-<p>Set handler for end (and empty) tags. As noted above, an empty tag
-generates a call to both start and end handlers.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetElementHandler">
-XML_SetElementHandler(XML_Parser p,
- XML_StartElementHandler start,
- XML_EndElementHandler end);
-</pre>
-<p>Set handlers for start and end tags with one call.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetCharacterDataHandler">
-XML_SetCharacterDataHandler(XML_Parser p,
- XML_CharacterDataHandler charhndl)
-</pre>
-<pre class="signature">
-typedef void
-(*XML_CharacterDataHandler)(void *userData,
- const XML_Char *s,
- int len);
-</pre>
-<p>Set a text handler. The string your handler receives
-is <em>NOT nul-terminated</em>. You have to use the length argument
-to deal with the end of the string. A single block of contiguous text
-free of markup may still result in a sequence of calls to this handler.
-In other words, if you're searching for a pattern in the text, it may
-be split across calls to this handler.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetProcessingInstructionHandler">
-XML_SetProcessingInstructionHandler(XML_Parser p,
- XML_ProcessingInstructionHandler proc)
-</pre>
-<pre class="signature">
-typedef void
-(*XML_ProcessingInstructionHandler)(void *userData,
- const XML_Char *target,
- const XML_Char *data);
-
-</pre>
-<p>Set a handler for processing instructions. The target is the first word
-in the processing instruction. The data is the rest of the characters in
-it after skipping all whitespace after the initial word.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetCommentHandler">
-XML_SetCommentHandler(XML_Parser p,
- XML_CommentHandler cmnt)
-</pre>
-<pre class="signature">
-typedef void
-(*XML_CommentHandler)(void *userData,
- const XML_Char *data);
-</pre>
-<p>Set a handler for comments. The data is all text inside the comment
-delimiters.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetStartCdataSectionHandler">
-XML_SetStartCdataSectionHandler(XML_Parser p,
- XML_StartCdataSectionHandler start);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_StartCdataSectionHandler)(void *userData);
-</pre>
-<p>Set a handler that gets called at the beginning of a CDATA section.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetEndCdataSectionHandler">
-XML_SetEndCdataSectionHandler(XML_Parser p,
- XML_EndCdataSectionHandler end);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_EndCdataSectionHandler)(void *userData);
-</pre>
-<p>Set a handler that gets called at the end of a CDATA section.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetCdataSectionHandler">
-XML_SetCdataSectionHandler(XML_Parser p,
- XML_StartCdataSectionHandler start,
- XML_EndCdataSectionHandler end)
-</pre>
-<p>Sets both CDATA section handlers with one call.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetDefaultHandler">
-XML_SetDefaultHandler(XML_Parser p,
- XML_DefaultHandler hndl)
-</pre>
-<pre class="signature">
-typedef void
-(*XML_DefaultHandler)(void *userData,
- const XML_Char *s,
- int len);
-</pre>
-
-<p>Sets a handler for any characters in the document which wouldn't
-otherwise be handled. This includes both data for which no handlers
-can be set (like some kinds of DTD declarations) and data which could
-be reported but which currently has no handler set. The characters
-are passed exactly as they were present in the XML document except
-that they will be encoded in UTF-8 or UTF-16. Line boundaries are not
-normalized. Note that a byte order mark character is not passed to the
-default handler. There are no guarantees about how characters are
-divided between calls to the default handler: for example, a comment
-might be split between multiple calls. Setting the handler with
-this call has the side effect of turning off expansion of references
-to internally defined general entities. Instead these references are
-passed to the default handler.</p>
-
-<p>See also <code><a
-href="#XML_DefaultCurrent">XML_DefaultCurrent</a></code>.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetDefaultHandlerExpand">
-XML_SetDefaultHandlerExpand(XML_Parser p,
- XML_DefaultHandler hndl)
-</pre>
-<pre class="signature">
-typedef void
-(*XML_DefaultHandler)(void *userData,
- const XML_Char *s,
- int len);
-</pre>
-<p>This sets a default handler, but doesn't inhibit the expansion of
-internal entity references. The entity reference will not be passed
-to the default handler.</p>
-
-<p>See also <code><a
-href="#XML_DefaultCurrent">XML_DefaultCurrent</a></code>.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetExternalEntityRefHandler">
-XML_SetExternalEntityRefHandler(XML_Parser p,
- XML_ExternalEntityRefHandler hndl)
-</pre>
-<pre class="signature">
-typedef int
-(*XML_ExternalEntityRefHandler)(XML_Parser p,
- const XML_Char *context,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId);
-</pre>
-<p>Set an external entity reference handler. This handler is also
-called for processing an external DTD subset if parameter entity parsing
-is in effect. (See <a href="#XML_SetParamEntityParsing">
-<code>XML_SetParamEntityParsing</code></a>.)</p>
-
-<p>The <code>context</code> parameter specifies the parsing context in
-the format expected by the <code>context</code> argument to <code><a
-href="#XML_ExternalEntityParserCreate"
->XML_ExternalEntityParserCreate</a></code>. <code>code</code> is
-valid only until the handler returns, so if the referenced entity is
-to be parsed later, it must be copied. <code>context</code> is NULL
-only when the entity is a parameter entity, which is how one can
-differentiate between general and parameter entities.</p>
-
-<p>The <code>base</code> parameter is the base to use for relative
-system identifiers. It is set by <code><a
-href="#XML_SetBase">XML_SetBase</a></code> and may be NULL. The
-<code>publicId</code> parameter is the public id given in the entity
-declaration and may be NULL. <code>systemId</code> is the system
-identifier specified in the entity declaration and is never NULL.</p>
-
-<p>There are a couple of ways in which this handler differs from
-others. First, this handler returns a status indicator (an
-integer). <code>XML_STATUS_OK</code> should be returned for successful
-handling of the external entity reference. Returning
-<code>XML_STATUS_ERROR</code> indicates failure, and causes the
-calling parser to return an
-<code>XML_ERROR_EXTERNAL_ENTITY_HANDLING</code> error.</p>
-
-<p>Second, instead of having the user data as its first argument, it
-receives the parser that encountered the entity reference. This, along
-with the context parameter, may be used as arguments to a call to
-<code><a href= "#XML_ExternalEntityParserCreate"
->XML_ExternalEntityParserCreate</a></code>. Using the returned
-parser, the body of the external entity can be recursively parsed.</p>
-
-<p>Since this handler may be called recursively, it should not be saving
-information into global or static variables.</p>
-</div>
-
-<pre class="fcndec" id="XML_SetExternalEntityRefHandlerArg">
-XML_SetExternalEntityRefHandlerArg(XML_Parser p,
- void *arg)
-</pre>
-<div class="fcndef">
-<p>Set the argument passed to the ExternalEntityRefHandler. If
-<code>arg</code> is not NULL, it is the new value passed to the
-handler set using <code><a href="#XML_SetExternalEntityRefHandler"
->XML_SetExternalEntityRefHandler</a></code>; if <code>arg</code> is
-NULL, the argument passed to the handler function will be the parser
-object itself.</p>
-
-<p><strong>Note:</strong>
-The type of <code>arg</code> and the type of the first argument to the
-ExternalEntityRefHandler do not match. This function takes a
-<code>void *</code> to be passed to the handler, while the handler
-accepts an <code>XML_Parser</code>. This is a historical accident,
-but will not be corrected before Expat 2.0 (at the earliest) to avoid
-causing compiler warnings for code that's known to work with this
-API. It is the responsibility of the application code to know the
-actual type of the argument passed to the handler and to manage it
-properly.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetSkippedEntityHandler">
-XML_SetSkippedEntityHandler(XML_Parser p,
- XML_SkippedEntityHandler handler)
-</pre>
-<pre class="signature">
-typedef void
-(*XML_SkippedEntityHandler)(void *userData,
- const XML_Char *entityName,
- int is_parameter_entity);
-</pre>
-<p>Set a skipped entity handler. This is called in two situations:</p>
-<ol>
- <li>An entity reference is encountered for which no declaration
- has been read <em>and</em> this is not an error.</li>
- <li>An internal entity reference is read, but not expanded, because
- <a href="#XML_SetDefaultHandler"><code>XML_SetDefaultHandler</code></a>
- has been called.</li>
-</ol>
-<p>The <code>is_parameter_entity</code> argument will be non-zero for
-a parameter entity and zero for a general entity.</p> <p>Note: skipped
-parameter entities in declarations and skipped general entities in
-attribute values cannot be reported, because the event would be out of
-sync with the reporting of the declarations or attribute values</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetUnknownEncodingHandler">
-XML_SetUnknownEncodingHandler(XML_Parser p,
- XML_UnknownEncodingHandler enchandler,
- void *encodingHandlerData)
-</pre>
-<pre class="signature">
-typedef int
-(*XML_UnknownEncodingHandler)(void *encodingHandlerData,
- const XML_Char *name,
- XML_Encoding *info);
-
-typedef struct {
- int map[256];
- void *data;
- int (*convert)(void *data, const char *s);
- void (*release)(void *data);
-} XML_Encoding;
-</pre>
-<p>Set a handler to deal with encodings other than the <a
-href="#builtin_encodings">built in set</a>. This should be done before
-<code><a href= "#XML_Parse" >XML_Parse</a></code> or <code><a href=
-"#XML_ParseBuffer" >XML_ParseBuffer</a></code> have been called on the
-given parser.</p> <p>If the handler knows how to deal with an encoding
-with the given name, it should fill in the <code>info</code> data
-structure and return <code>XML_STATUS_ERROR</code>. Otherwise it
-should return <code>XML_STATUS_OK</code>. The handler will be called
-at most once per parsed (external) entity. The optional application
-data pointer <code>encodingHandlerData</code> will be passed back to
-the handler.</p>
-
-<p>The map array contains information for every possible possible leading
-byte in a byte sequence. If the corresponding value is &gt;= 0, then it's
-a single byte sequence and the byte encodes that Unicode value. If the
-value is -1, then that byte is invalid as the initial byte in a sequence.
-If the value is -n, where n is an integer &gt; 1, then n is the number of
-bytes in the sequence and the actual conversion is accomplished by a
-call to the function pointed at by convert. This function may return -1
-if the sequence itself is invalid. The convert pointer may be null if
-there are only single byte codes. The data parameter passed to the convert
-function is the data pointer from <code>XML_Encoding</code>. The
-string s is <em>NOT</em> nul-terminated and points at the sequence of
-bytes to be converted.</p>
-
-<p>The function pointed at by <code>release</code> is called by the
-parser when it is finished with the encoding. It may be NULL.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetStartNamespaceDeclHandler">
-XML_SetStartNamespaceDeclHandler(XML_Parser p,
- XML_StartNamespaceDeclHandler start);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_StartNamespaceDeclHandler)(void *userData,
- const XML_Char *prefix,
- const XML_Char *uri);
-</pre>
-<p>Set a handler to be called when a namespace is declared. Namespace
-declarations occur inside start tags. But the namespace declaration start
-handler is called before the start tag handler for each namespace declared
-in that start tag.</p>
-
-<p><strong>Note:</strong>
-Due to limitations of the implementation, the
-StartNamespaceDeclHandler is not called unless the StartElementHandler
-is also set. The specific value of the StartElementHandler is allowed
-to change freely, so long as it is not NULL.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetEndNamespaceDeclHandler">
-XML_SetEndNamespaceDeclHandler(XML_Parser p,
- XML_EndNamespaceDeclHandler end);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_EndNamespaceDeclHandler)(void *userData,
- const XML_Char *prefix);
-</pre>
-<p>Set a handler to be called when leaving the scope of a namespace
-declaration. This will be called, for each namespace declaration,
-after the handler for the end tag of the element in which the
-namespace was declared.</p>
-
-<p><strong>Note:</strong>
-Due to limitations of the implementation, the EndNamespaceDeclHandler
-is not called unless the StartElementHandler is also set. The
-specific value of the StartElementHandler is allowed to change freely,
-so long as it is not NULL.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetNamespaceDeclHandler">
-XML_SetNamespaceDeclHandler(XML_Parser p,
- XML_StartNamespaceDeclHandler start,
- XML_EndNamespaceDeclHandler end)
-</pre>
-<p>Sets both namespace declaration handlers with a single call.</p>
-
-<p><strong>Note:</strong>
-Due to limitations of the implementation, the
-StartNamespaceDeclHandler and EndNamespaceDeclHandler are not called
-unless the StartElementHandler is also set. The specific value of the
-StartElementHandler is allowed to change freely, so long as it is not
-NULL.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetXmlDeclHandler">
-XML_SetXmlDeclHandler(XML_Parser p,
- XML_XmlDeclHandler xmldecl);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_XmlDeclHandler) (void *userData,
- const XML_Char *version,
- const XML_Char *encoding,
- int standalone);
-</pre>
-<p>Sets a handler that is called for XML declarations and also for
-text declarations discovered in external entities. The way to
-distinguish is that the <code>version</code> parameter will be NULL
-for text declarations. The <code>encoding</code> parameter may be NULL
-for an XML declaration. The <code>standalone</code> argument will
-contain -1, 0, or 1 indicating respectively that there was no
-standalone parameter in the declaration, that it was given as no, or
-that it was given as yes.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetStartDoctypeDeclHandler">
-XML_SetStartDoctypeDeclHandler(XML_Parser p,
- XML_StartDoctypeDeclHandler start);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_StartDoctypeDeclHandler)(void *userData,
- const XML_Char *doctypeName,
- const XML_Char *sysid,
- const XML_Char *pubid,
- int has_internal_subset);
-</pre>
-<p>Set a handler that is called at the start of a DOCTYPE declaration,
-before any external or internal subset is parsed. Both <code>sysid</code>
-and <code>pubid</code> may be NULL. The <code>has_internal_subset</code>
-will be non-zero if the DOCTYPE declaration has an internal subset.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetEndDoctypeDeclHandler">
-XML_SetEndDoctypeDeclHandler(XML_Parser p,
- XML_EndDoctypeDeclHandler end);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_EndDoctypeDeclHandler)(void *userData);
-</pre>
-<p>Set a handler that is called at the end of a DOCTYPE declaration,
-after parsing any external subset.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetDoctypeDeclHandler">
-XML_SetDoctypeDeclHandler(XML_Parser p,
- XML_StartDoctypeDeclHandler start,
- XML_EndDoctypeDeclHandler end);
-</pre>
-<p>Set both doctype handlers with one call.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetElementDeclHandler">
-XML_SetElementDeclHandler(XML_Parser p,
- XML_ElementDeclHandler eldecl);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_ElementDeclHandler)(void *userData,
- const XML_Char *name,
- XML_Content *model);
-</pre>
-<pre class="signature">
-enum XML_Content_Type {
- XML_CTYPE_EMPTY = 1,
- XML_CTYPE_ANY,
- XML_CTYPE_MIXED,
- XML_CTYPE_NAME,
- XML_CTYPE_CHOICE,
- XML_CTYPE_SEQ
-};
-
-enum XML_Content_Quant {
- XML_CQUANT_NONE,
- XML_CQUANT_OPT,
- XML_CQUANT_REP,
- XML_CQUANT_PLUS
-};
-
-typedef struct XML_cp XML_Content;
-
-struct XML_cp {
- enum XML_Content_Type type;
- enum XML_Content_Quant quant;
- const XML_Char * name;
- unsigned int numchildren;
- XML_Content * children;
-};
-</pre>
-<p>Sets a handler for element declarations in a DTD. The handler gets
-called with the name of the element in the declaration and a pointer
-to a structure that contains the element model. It is the
-application's responsibility to free this data structure using
-<code><a href="#XML_FreeContentModel"
->XML_FreeContentModel</a></code>.</p>
-
-<p>The <code>model</code> argument is the root of a tree of
-<code>XML_Content</code> nodes. If <code>type</code> equals
-<code>XML_CTYPE_EMPTY</code> or <code>XML_CTYPE_ANY</code>, then
-<code>quant</code> will be <code>XML_CQUANT_NONE</code>, and the other
-fields will be zero or NULL. If <code>type</code> is
-<code>XML_CTYPE_MIXED</code>, then <code>quant</code> will be
-<code>XML_CQUANT_NONE</code> or <code>XML_CQUANT_REP</code> and
-<code>numchildren</code> will contain the number of elements that are
-allowed to be mixed in and <code>children</code> points to an array of
-<code>XML_Content</code> structures that will all have type
-XML_CTYPE_NAME with no quantification. Only the root node can be type
-<code>XML_CTYPE_EMPTY</code>, <code>XML_CTYPE_ANY</code>, or
-<code>XML_CTYPE_MIXED</code>.</p>
-
-<p>For type <code>XML_CTYPE_NAME</code>, the <code>name</code> field
-points to the name and the <code>numchildren</code> and
-<code>children</code> fields will be zero and NULL. The
-<code>quant</code> field will indicate any quantifiers placed on the
-name.</p>
-
-<p>Types <code>XML_CTYPE_CHOICE</code> and <code>XML_CTYPE_SEQ</code>
-indicate a choice or sequence respectively. The
-<code>numchildren</code> field indicates how many nodes in the choice
-or sequence and <code>children</code> points to the nodes.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetAttlistDeclHandler">
-XML_SetAttlistDeclHandler(XML_Parser p,
- XML_AttlistDeclHandler attdecl);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_AttlistDeclHandler) (void *userData,
- const XML_Char *elname,
- const XML_Char *attname,
- const XML_Char *att_type,
- const XML_Char *dflt,
- int isrequired);
-</pre>
-<p>Set a handler for attlist declarations in the DTD. This handler is
-called for <em>each</em> attribute. So a single attlist declaration
-with multiple attributes declared will generate multiple calls to this
-handler. The <code>elname</code> parameter returns the name of the
-element for which the attribute is being declared. The attribute name
-is in the <code>attname</code> parameter. The attribute type is in the
-<code>att_type</code> parameter. It is the string representing the
-type in the declaration with whitespace removed.</p>
-
-<p>The <code>dflt</code> parameter holds the default value. It will be
-NULL in the case of "#IMPLIED" or "#REQUIRED" attributes. You can
-distinguish these two cases by checking the <code>isrequired</code>
-parameter, which will be true in the case of "#REQUIRED" attributes.
-Attributes which are "#FIXED" will have also have a true
-<code>isrequired</code>, but they will have the non-NULL fixed value
-in the <code>dflt</code> parameter.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetEntityDeclHandler">
-XML_SetEntityDeclHandler(XML_Parser p,
- XML_EntityDeclHandler handler);
-</pre>
-<pre class="signature">
-typedef void
-(*XML_EntityDeclHandler) (void *userData,
- const XML_Char *entityName,
- int is_parameter_entity,
- const XML_Char *value,
- int value_length,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId,
- const XML_Char *notationName);
-</pre>
-<p>Sets a handler that will be called for all entity declarations.
-The <code>is_parameter_entity</code> argument will be non-zero in the
-case of parameter entities and zero otherwise.</p>
-
-<p>For internal entities (<code>&lt;!ENTITY foo "bar"&gt;</code>),
-<code>value</code> will be non-NULL and <code>systemId</code>,
-<code>publicId</code>, and <code>notationName</code> will all be NULL.
-The value string is <em>not</em> NULL terminated; the length is
-provided in the <code>value_length</code> parameter. Do not use
-<code>value_length</code> to test for internal entities, since it is
-legal to have zero-length values. Instead check for whether or not
-<code>value</code> is NULL.</p> <p>The <code>notationName</code>
-argument will have a non-NULL value only for unparsed entity
-declarations.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetUnparsedEntityDeclHandler">
-XML_SetUnparsedEntityDeclHandler(XML_Parser p,
- XML_UnparsedEntityDeclHandler h)
-</pre>
-<pre class="signature">
-typedef void
-(*XML_UnparsedEntityDeclHandler)(void *userData,
- const XML_Char *entityName,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId,
- const XML_Char *notationName);
-</pre>
-<p>Set a handler that receives declarations of unparsed entities. These
-are entity declarations that have a notation (NDATA) field:</p>
-
-<div id="eg"><pre>
-&lt;!ENTITY logo SYSTEM "images/logo.gif" NDATA gif&gt;
-</pre></div>
-<p>This handler is obsolete and is provided for backwards
-compatibility. Use instead <a href= "#XML_SetEntityDeclHandler"
->XML_SetEntityDeclHandler</a>.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetNotationDeclHandler">
-XML_SetNotationDeclHandler(XML_Parser p,
- XML_NotationDeclHandler h)
-</pre>
-<pre class="signature">
-typedef void
-(*XML_NotationDeclHandler)(void *userData,
- const XML_Char *notationName,
- const XML_Char *base,
- const XML_Char *systemId,
- const XML_Char *publicId);
-</pre>
-<p>Set a handler that receives notation declarations.</p>
-</div>
-
-<div class="handler">
-<pre class="setter" id="XML_SetNotStandaloneHandler">
-XML_SetNotStandaloneHandler(XML_Parser p,
- XML_NotStandaloneHandler h)
-</pre>
-<pre class="signature">
-typedef int
-(*XML_NotStandaloneHandler)(void *userData);
-</pre>
-<p>Set a handler that is called if the document is not "standalone".
-This happens when there is an external subset or a reference to a
-parameter entity, but does not have standalone set to "yes" in an XML
-declaration. If this handler returns <code>XML_STATUS_ERROR</code>,
-then the parser will throw an <code>XML_ERROR_NOT_STANDALONE</code>
-error.</p>
-</div>
-
-<h3><a name="position">Parse position and error reporting functions</a></h3>
-
-<p>These are the functions you'll want to call when the parse
-functions return <code>XML_STATUS_ERROR</code> (a parse error has
-ocurred), although the position reporting functions are useful outside
-of errors. The position reported is the byte position (in the original
-document or entity encoding) of the first of the sequence of
-characters that generated the current event (or the error that caused
-the parse functions to return <code>XML_STATUS_ERROR</code>.)</p>
-
-<p>The position reporting functions are accurate only outside of the
-DTD. In other words, they usually return bogus information when
-called from within a DTD declaration handler.</p>
-
-<pre class="fcndec" id="XML_GetErrorCode">
-enum XML_Error
-XML_GetErrorCode(XML_Parser p);
-</pre>
-<div class="fcndef">
-Return what type of error has occurred.
-</div>
-
-<pre class="fcndec" id="XML_ErrorString">
-const XML_LChar *
-XML_ErrorString(int code);
-</pre>
-<div class="fcndef">
-Return a string describing the error corresponding to code.
-The code should be one of the enums that can be returned from
-<code><a href= "#XML_GetErrorCode" >XML_GetErrorCode</a></code>.
-</div>
-
-<pre class="fcndec" id="XML_GetCurrentByteIndex">
-long
-XML_GetCurrentByteIndex(XML_Parser p);
-</pre>
-<div class="fcndef">
-Return the byte offset of the position.
-</div>
-
-<pre class="fcndec" id="XML_GetCurrentLineNumber">
-int
-XML_GetCurrentLineNumber(XML_Parser p);
-</pre>
-<div class="fcndef">
-Return the line number of the position.
-</div>
-
-<pre class="fcndec" id="XML_GetCurrentColumnNumber">
-int
-XML_GetCurrentColumnNumber(XML_Parser p);
-</pre>
-<div class="fcndef">
-Return the offset, from the beginning of the current line, of
-the position.
-</div>
-
-<pre class="fcndec" id="XML_GetCurrentByteCount">
-int
-XML_GetCurrentByteCount(XML_Parser p);
-</pre>
-<div class="fcndef">
-Return the number of bytes in the current event. Returns
-<code>0</code> if the event is inside a reference to an internal
-entity and for the end-tag event for empty element tags (the later can
-be used to distinguish empty-element tags from empty elements using
-separate start and end tags).
-</div>
-
-<pre class="fcndec" id="XML_GetInputContext">
-const char *
-XML_GetInputContext(XML_Parser p,
- int *offset,
- int *size);
-</pre>
-<div class="fcndef">
-
-<p>Returns the parser's input buffer, sets the integer pointed at by
-<code>offset</code> to the offset within this buffer of the current
-parse position, and set the integer pointed at by <code>size</code> to
-the size of the returned buffer.</p>
-
-<p>This should only be called from within a handler during an active
-parse and the returned buffer should only be referred to from within
-the handler that made the call. This input buffer contains the
-untranslated bytes of the input.</p>
-
-<p>Only a limited amount of context is kept, so if the event
-triggering a call spans over a very large amount of input, the actual
-parse position may be before the beginning of the buffer.</p>
-</div>
-
-<h3><a name="miscellaneous">Miscellaneous functions</a></h3>
-
-<p>The functions in this section either obtain state information from
-the parser or can be used to dynamicly set parser options.</p>
-
-<pre class="fcndec" id="XML_SetUserData">
-void
-XML_SetUserData(XML_Parser p,
- void *userData);
-</pre>
-<div class="fcndef">
-This sets the user data pointer that gets passed to handlers. It
-overwrites any previous value for this pointer. Note that the
-application is responsible for freeing the memory associated with
-<code>userData</code> when it is finished with the parser. So if you
-call this when there's already a pointer there, and you haven't freed
-the memory associated with it, then you've probably just leaked
-memory.
-</div>
-
-<pre class="fcndec" id="XML_GetUserData">
-void *
-XML_GetUserData(XML_Parser p);
-</pre>
-<div class="fcndef">
-This returns the user data pointer that gets passed to handlers.
-It is actually implemented as a macro.
-</div>
-
-<pre class="fcndec" id="XML_UseParserAsHandlerArg">
-void
-XML_UseParserAsHandlerArg(XML_Parser p);
-</pre>
-<div class="fcndef">
-After this is called, handlers receive the parser in their
-<code>userData</code> arguments. The user data can still be obtained
-using the <code><a href= "#XML_GetUserData"
->XML_GetUserData</a></code> function.
-</div>
-
-<pre class="fcndec" id="XML_SetBase">
-enum XML_Status
-XML_SetBase(XML_Parser p,
- const XML_Char *base);
-</pre>
-<div class="fcndef">
-Set the base to be used for resolving relative URIs in system
-identifiers. The return value is <code>XML_STATUS_ERROR</code> if
-there's no memory to store base, otherwise it's
-<code>XML_STATUS_OK</code>.
-</div>
-
-<pre class="fcndec" id="XML_GetBase">
-const XML_Char *
-XML_GetBase(XML_Parser p);
-</pre>
-<div class="fcndef">
-Return the base for resolving relative URIs.
-</div>
-
-<pre class="fcndec" id="XML_GetSpecifiedAttributeCount">
-int
-XML_GetSpecifiedAttributeCount(XML_Parser p);
-</pre>
-<div class="fcndef">
-When attributes are reported to the start handler in the atts vector,
-attributes that were explicitly set in the element occur before any
-attributes that receive their value from default information in an
-ATTLIST declaration. This function returns the number of attributes
-that were explicitly set times two, thus giving the offset in the
-<code>atts</code> array passed to the start tag handler of the first
-attribute set due to defaults. It supplies information for the last
-call to a start handler. If called inside a start handler, then that
-means the current call.
-</div>
-
-<pre class="fcndec" id="XML_GetIdAttributeIndex">
-int
-XML_GetIdAttributeIndex(XML_Parser p);
-</pre>
-<div class="fcndef">
-Returns the index of the ID attribute passed in the atts array in the
-last call to <code><a href= "#XML_StartElementHandler"
->XML_StartElementHandler</a></code>, or -1 if there is no ID
-attribute. If called inside a start handler, then that means the
-current call.
-</div>
-
-<pre class="fcndec" id="XML_SetEncoding">
-enum XML_Status
-XML_SetEncoding(XML_Parser p,
- const XML_Char *encoding);
-</pre>
-<div class="fcndef">
-Set the encoding to be used by the parser. It is equivalent to
-passing a non-null encoding argument to the parser creation functions.
-It must not be called after <code><a href= "#XML_Parse"
->XML_Parse</a></code> or <code><a href= "#XML_ParseBuffer"
->XML_ParseBuffer</a></code> have been called on the given parser.
-Returns <code>XML_STATUS_OK</code> on success or
-<code>XML_STATUS_ERROR</code> on error.
-</div>
-
-<pre class="fcndec" id="XML_SetParamEntityParsing">
-int
-XML_SetParamEntityParsing(XML_Parser p,
- enum XML_ParamEntityParsing code);
-</pre>
-<div class="fcndef">
-This enables parsing of parameter entities, including the external
-parameter entity that is the external DTD subset, according to
-<code>code</code>.
-The choices for <code>code</code> are:
-<ul>
-<li><code>XML_PARAM_ENTITY_PARSING_NEVER</code></li>
-<li><code>XML_PARAM_ENTITY_PARSING_UNLESS_STANDALONE</code></li>
-<li><code>XML_PARAM_ENTITY_PARSING_ALWAYS</code></li>
-</ul>
-</div>
-
-<pre class="fcndec" id="XML_UseForeignDTD">
-enum XML_Error
-XML_UseForeignDTD(XML_Parser parser, XML_Bool useDTD);
-</pre>
-<div class="fcndef">
-<p>This function allows an application to provide an external subset
-for the document type declaration for documents which do not specify
-an external subset of their own. For documents which specify an
-external subset in their DOCTYPE declaration, the application-provided
-subset will be ignored. If the document does not contain a DOCTYPE
-declaration at all and <code>useDTD</code> is true, the
-application-provided subset will be parsed, but the
-<code>startDoctypeDeclHandler</code> and
-<code>endDoctypeDeclHandler</code> functions, if set, will not be
-called. The setting of parameter entity parsing, controlled using
-<code><a href= "#XML_SetParamEntityParsing"
->XML_SetParamEntityParsing</a></code>, will be honored.</p>
-
-<p>The application-provided external subset is read by calling the
-external entity reference handler set via <code><a href=
-"#XML_SetExternalEntityRefHandler"
->XML_SetExternalEntityRefHandler</a></code> with both
-<code>publicId</code> and <code>systemId</code> set to NULL.</p>
-
-<p>If this function is called after parsing has begun, it returns
-<code>XML_ERROR_CANT_CHANGE_FEATURE_ONCE_PARSING</code> and ignores
-<code>useDTD</code>. If called when Expat has been compiled without
-DTD support, it returns
-<code>XML_ERROR_FEATURE_REQUIRES_XML_DTD</code>. Otherwise, it
-returns <code>XML_ERROR_NONE</code>.</p>
-</div>
-
-<pre class="fcndec" id="XML_SetReturnNSTriplet">
-void
-XML_SetReturnNSTriplet(XML_Parser parser,
- int do_nst);
-</pre>
-<div class="fcndef">
-<p>
-This function only has an effect when using a parser created with
-<code><a href= "#XML_ParserCreateNS" >XML_ParserCreateNS</a></code>,
-i.e. when namespace processing is in effect. The <code>do_nst</code>
-sets whether or not prefixes are returned with names qualified with a
-namespace prefix. If this function is called with <code>do_nst</code>
-non-zero, then afterwards namespace qualified names (that is qualified
-with a prefix as opposed to belonging to a default namespace) are
-returned as a triplet with the three parts separated by the namespace
-separator specified when the parser was created. The order of
-returned parts is URI, local name, and prefix.</p> <p>If
-<code>do_nst</code> is zero, then namespaces are reported in the
-default manner, URI then local_name separated by the namespace
-separator.</p>
-</div>
-
-<pre class="fcndec" id="XML_DefaultCurrent">
-void
-XML_DefaultCurrent(XML_Parser parser);
-</pre>
-<div class="fcndef">
-This can be called within a handler for a start element, end element,
-processing instruction or character data. It causes the corresponding
-markup to be passed to the default handler set by <code><a
-href="#XML_SetDefaultHandler" >XML_SetDefaultHandler</a></code> or
-<code><a href="#XML_SetDefaultHandlerExpand"
->XML_SetDefaultHandlerExpand</a></code>. It does nothing if there is
-not a default handler.
-</div>
-
-<pre class="fcndec" id="XML_ExpatVersion">
-XML_LChar *
-XML_ExpatVersion();
-</pre>
-<div class="fcndef">
-Return the library version as a string (e.g. <code>"expat_1.95.1"</code>).
-</div>
-
-<pre class="fcndec" id="XML_ExpatVersionInfo">
-struct XML_Expat_Version
-XML_ExpatVersionInfo();
-</pre>
-<pre class="signature">
-typedef struct {
- int major;
- int minor;
- int micro;
-} XML_Expat_Version;
-</pre>
-<div class="fcndef">
-Return the library version information as a structure.
-Some macros are also defined that support compile-time tests of the
-library version:
-<ul>
-<li><code>XML_MAJOR_VERSION</code></li>
-<li><code>XML_MINOR_VERSION</code></li>
-<li><code>XML_MICRO_VERSION</code></li>
-</ul>
-Testing these constants is currently the best way to determine if
-particular parts of the Expat API are available.
-</div>
-
-<pre class="fcndec" id="XML_GetFeatureList">
-const XML_Feature *
-XML_GetFeatureList();
-</pre>
-<pre class="signature">
-enum XML_FeatureEnum {
- XML_FEATURE_END = 0,
- XML_FEATURE_UNICODE,
- XML_FEATURE_UNICODE_WCHAR_T,
- XML_FEATURE_DTD,
- XML_FEATURE_CONTEXT_BYTES,
- XML_FEATURE_MIN_SIZE,
- XML_FEATURE_SIZEOF_XML_CHAR,
- XML_FEATURE_SIZEOF_XML_LCHAR
-};
-
-typedef struct {
- enum XML_FeatureEnum feature;
- XML_LChar *name;
- long int value;
-} XML_Feature;
-</pre>
-<div class="fcndef">
-<p>Returns a list of "feature" records, providing details on how
-Expat was configured at compile time. Most applications should not
-need to worry about this, but this information is otherwise not
-available from Expat. This function allows code that does need to
-check these features to do so at runtime.</p>
-
-<p>The return value is an array of <code>XML_Feature</code>,
-terminated by a record with a <code>feature</code> of
-<code>XML_FEATURE_END</code> and <code>name</code> of NULL,
-identifying the feature-test macros Expat was compiled with. Since an
-application that requires this kind of information needs to determine
-the type of character the <code>name</code> points to, records for the
-<code>XML_FEATURE_SIZEOF_XML_CHAR</code> and
-<code>XML_FEATURE_SIZEOF_XML_LCHAR</code> will be located at the
-beginning of the list, followed by <code>XML_FEATURE_UNICODE</code>
-and <code>XML_FEATURE_UNICODE_WCHAR_T</code>, if they are present at
-all.</p>
-
-<p>Some features have an associated value. If there isn't an
-associated value, the <code>value</code> field is set to 0. At this
-time, the following features have been defined to have values:</p>
-
-<dl>
- <dt><code>XML_FEATURE_SIZEOF_XML_CHAR</code></dt>
- <dd>The number of bytes occupied by one <code>XML_Char</code>
- character.</dd>
- <dt><code>XML_FEATURE_SIZEOF_XML_LCHAR</code></dt>
- <dd>The number of bytes occupied by one <code>XML_LChar</code>
- character.</dd>
- <dt><code>XML_FEATURE_CONTEXT_BYTES</code></dt>
- <dd>The maximum number of characters of context which can be
- reported by <code><a href= "#XML_GetInputContext"
- >XML_GetInputContext</a></code>.</dd>
-</dl>
-</div>
-
-<pre class="fcndec" id="XML_FreeContentModel">
-void
-XML_FreeContentModel(XML_Parser parser, XML_Content *model);
-</pre>
-<div class="fcndef">
-Function to deallocate the <code>model</code> argument passed to the
-<code>XML_ElementDeclHandler</code> callback set using <code><a
-href="#XML_SetElementDeclHandler" >XML_ElementDeclHandler</a></code>.
-This function should not be used for any other purpose.
-</div>
-
-<p>The following functions allow external code to share the memory
-allocator an <code>XML_Parser</code> has been configured to use. This
-is especially useful for third-party libraries that interact with a
-parser object created by application code, or heavily layered
-applications. This can be essential when using dynamically loaded
-libraries which use different C standard libraries (this can happen on
-Windows, at least).</p>
-
-<pre class="fcndec" id="XML_MemMalloc">
-void *
-XML_MemMalloc(XML_Parser parser, size_t size);
-</pre>
-<div class="fcndef">
-Allocate <code>size</code> bytes of memory using the allocator the
-<code>parser</code> object has been configured to use. Returns a
-pointer to the memory or NULL on failure. Memory allocated in this
-way must be freed using <code><a href="#XML_MemFree"
->XML_MemFree</a></code>.
-</div>
-
-<pre class="fcndec" id="XML_MemRealloc">
-void *
-XML_MemRealloc(XML_Parser parser, void *ptr, size_t size);
-</pre>
-<div class="fcndef">
-Allocate <code>size</code> bytes of memory using the allocator the
-<code>parser</code> object has been configured to use.
-<code>ptr</code> must point to a block of memory allocated by <code><a
-href="#XML_MemMalloc" >XML_MemMalloc</a></code> or
-<code>XML_MemRealloc</code>, or be NULL. This function tries to
-expand the block pointed to by <code>ptr</code> if possible. Returns
-a pointer to the memory or NULL on failure. On success, the original
-block has either been expanded or freed. On failure, the original
-block has not been freed; the caller is responsible for freeing the
-original block. Memory allocated in this way must be freed using
-<code><a href="#XML_MemFree"
->XML_MemFree</a></code>.
-</div>
-
-<pre class="fcndec" id="XML_MemFree">
-void
-XML_MemFree(XML_Parser parser, void *ptr);
-</pre>
-<div class="fcndef">
-Free a block of memory pointed to by <code>ptr</code>. The block must
-have been allocated by <code><a href="#XML_MemMalloc"
->XML_MemMalloc</a></code> or <code>XML_MemRealloc</code>, or be NULL.
-</div>
-
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