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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<HTML>
<HEAD>
<TITLE>Mini-XML Programmers Manual, Version 2.3</TITLE>
<META NAME="author" CONTENT="Michael R. Sweet">
<META NAME="copyright" CONTENT="Copyright 2003-2007">
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=iso-iso-8859-1">
<STYLE TYPE="text/css"><!--
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H2 { font-family: sans-serif }
H3 { font-family: sans-serif }
H4 { font-family: sans-serif }
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SUP { font-size: smaller }
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A { text-decoration: none }
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</HEAD>
<BODY>
<H1 ALIGN="CENTER"><A NAME="CONTENTS">Table of Contents</A></H1>
<BR>
<BR><B><A HREF="#INTRO">Introduction</A></B>
<UL>
<LI><A HREF="#1_1">Organization of This Document</A></LI>
<LI><A HREF="#1_2">Notation Conventions</A></LI>
<LI><A HREF="#1_3">Abbreviations</A></LI>
<LI><A HREF="#1_4">Other References</A></LI>
<LI><A HREF="#1_5">Legal Stuff</A></LI>
</UL>
<B><A HREF="#INSTALL">Building, Installing, and Packaging Mini-XML</A></B>
<UL>
<LI><A HREF="#2_1">Compiling Mini-XML</A>
<UL>
<LI><A HREF="#2_1_1">Compiling with Visual C++</A></LI>
<LI><A HREF="#2_1_2">Compiling with Command-Line Tools</A></LI>
</UL>
</LI>
<LI><A HREF="#2_2">Installing Mini-XML</A></LI>
<LI><A HREF="#2_3">Creating Mini-XML Packages</A></LI>
</UL>
<B><A HREF="#BASICS">Getting Started with Mini-XML</A></B>
<UL>
<LI><A HREF="#3_1">The Basics</A></LI>
<LI><A HREF="#3_2">Nodes</A></LI>
<LI><A HREF="#3_3">Creating XML Documents</A></LI>
<LI><A HREF="#3_4">Loading XML</A></LI>
<LI><A HREF="#3_5">Saving XML</A>
<UL>
<LI><A HREF="#3_5_1">Controlling Line Wrapping</A></LI>
</UL>
</LI>
<LI><A HREF="#3_6">Finding and Iterating Nodes</A></LI>
</UL>
<B><A HREF="#ADVANCED">More Mini-XML Programming Techniques</A></B>
<UL>
<LI><A HREF="#LOAD_CALLBACKS">Load Callbacks</A></LI>
<LI><A HREF="#SAVE_CALLBACKS">Save Callbacks</A></LI>
<LI><A HREF="#4_3">Custom Data Types</A></LI>
<LI><A HREF="#4_4">Changing Node Values</A></LI>
<LI><A HREF="#4_5">Formatted Text</A></LI>
<LI><A HREF="#4_6">Indexing</A></LI>
<LI><A HREF="#4_7">SAX (Stream) Loading of Documents</A></LI>
</UL>
<B><A HREF="#MXMLDOC">Using the mxmldoc Utility</A></B>
<UL>
<LI><A HREF="#5_1">The Basics</A></LI>
<LI><A HREF="#5_2">Commenting Your Code</A></LI>
<LI><A HREF="#5_3">Creating HTML Documentation</A></LI>
<LI><A HREF="#5_4">Creating Man Pages</A></LI>
<LI><A HREF="#5_5">The XML Schema</A></LI>
</UL>
<B><A HREF="#LICENSE">Mini-XML License</A></B>
<BR>
<BR><B><A HREF="#RELNOTES">Release Notes</A></B>
<UL></UL>
<B><A HREF="#REFERENCE">Library Reference</A></B>
<UL>
<LI><A HREF="#8_1">Contents</A></LI>
<LI><A HREF="#ENUMERATIONS">Enumerations</A>
<UL>
<LI><A HREF="#mxml_sax_event_e">mxml_sax_event_e</A></LI>
<LI><A HREF="#mxml_type_e">mxml_type_e</A></LI>
</UL>
</LI>
<LI><A HREF="#FUNCTIONS">Functions</A>
<UL>
<LI><A HREF="#mxmlAdd">mxmlAdd()</A></LI>
<LI><A HREF="#mxmlDelete">mxmlDelete()</A></LI>
<LI><A HREF="#mxmlElementGetAttr">mxmlElementGetAttr()</A></LI>
<LI><A HREF="#mxmlElementSetAttr">mxmlElementSetAttr()</A></LI>
<LI><A HREF="#8_3_5">mxmlElementSetAttrf()</A></LI>
<LI><A HREF="#mxmlEntityAddCallback">mxmlEntityAddCallback()</A></LI>
<LI><A HREF="#mxmlEntityGetName">mxmlEntityGetName()</A></LI>
<LI><A HREF="#mxmlEntityGetValue">mxmlEntityGetValue()</A></LI>
<LI><A HREF="#mxmlEntityRemoveCallback">mxmlEntityRemoveCallback()</A></LI>
<LI><A HREF="#mxmlFindElement">mxmlFindElement()</A></LI>
<LI><A HREF="#mxmlIndexDelete">mxmlIndexDelete()</A></LI>
<LI><A HREF="#mxmlIndexEnum">mxmlIndexEnum()</A></LI>
<LI><A HREF="#mxmlIndexFind">mxmlIndexFind()</A></LI>
<LI><A HREF="#mxmlIndexNew">mxmlIndexNew()</A></LI>
<LI><A HREF="#mxmlIndexReset">mxmlIndexReset()</A></LI>
<LI><A HREF="#mxmlLoadFd">mxmlLoadFd()</A></LI>
<LI><A HREF="#mxmlLoadFile">mxmlLoadFile()</A></LI>
<LI><A HREF="#mxmlLoadString">mxmlLoadString()</A></LI>
<LI><A HREF="#8_3_19">mxmlNewCDATA()</A></LI>
<LI><A HREF="#8_3_20">mxmlNewCustom()</A></LI>
<LI><A HREF="#mxmlNewElement">mxmlNewElement()</A></LI>
<LI><A HREF="#mxmlNewInteger">mxmlNewInteger()</A></LI>
<LI><A HREF="#mxmlNewOpaque">mxmlNewOpaque()</A></LI>
<LI><A HREF="#mxmlNewReal">mxmlNewReal()</A></LI>
<LI><A HREF="#mxmlNewText">mxmlNewText()</A></LI>
<LI><A HREF="#mxmlNewTextf">mxmlNewTextf()</A></LI>
<LI><A HREF="#8_3_27">mxmlNewXML()</A></LI>
<LI><A HREF="#8_3_28">mxmlRelease()</A></LI>
<LI><A HREF="#mxmlRemove">mxmlRemove()</A></LI>
<LI><A HREF="#8_3_30">mxmlRetain()</A></LI>
<LI><A HREF="#8_3_31">mxmlSAXLoadFd()</A></LI>
<LI><A HREF="#8_3_32">mxmlSAXLoadFile()</A></LI>
<LI><A HREF="#8_3_33">mxmlSAXLoadString()</A></LI>
<LI><A HREF="#mxmlSaveAllocString">mxmlSaveAllocString()</A></LI>
<LI><A HREF="#mxmlSaveFd">mxmlSaveFd()</A></LI>
<LI><A HREF="#mxmlSaveFile">mxmlSaveFile()</A></LI>
<LI><A HREF="#mxmlSaveString">mxmlSaveString()</A></LI>
<LI><A HREF="#8_3_38">mxmlSetCDATA()</A></LI>
<LI><A HREF="#8_3_39">mxmlSetCustom()</A></LI>
<LI><A HREF="#mxmlSetCustomHandlers">mxmlSetCustomHandlers()</A></LI>
<LI><A HREF="#mxmlSetElement">mxmlSetElement()</A></LI>
<LI><A HREF="#mxmlSetErrorCallback">mxmlSetErrorCallback()</A></LI>
<LI><A HREF="#mxmlSetInteger">mxmlSetInteger()</A></LI>
<LI><A HREF="#mxmlSetOpaque">mxmlSetOpaque()</A></LI>
<LI><A HREF="#mxmlSetReal">mxmlSetReal()</A></LI>
<LI><A HREF="#mxmlSetText">mxmlSetText()</A></LI>
<LI><A HREF="#mxmlSetTextf">mxmlSetTextf()</A></LI>
<LI><A HREF="#8_3_48">mxmlSetWrapMargin()</A></LI>
<LI><A HREF="#mxmlWalkNext">mxmlWalkNext()</A></LI>
<LI><A HREF="#mxmlWalkPrev">mxmlWalkPrev()</A></LI>
</UL>
</LI>
<LI><A HREF="#STRUCTURES">Structures</A>
<UL>
<LI><A HREF="#mxml_attr_s">mxml_attr_s</A></LI>
<LI><A HREF="#8_4_2">mxml_custom_s</A></LI>
<LI><A HREF="#mxml_element_s">mxml_element_s</A></LI>
<LI><A HREF="#mxml_index_s">mxml_index_s</A></LI>
<LI><A HREF="#mxml_node_s">mxml_node_s</A></LI>
<LI><A HREF="#mxml_text_s">mxml_text_s</A></LI>
</UL>
</LI>
<LI><A HREF="#TYPES">Types</A>
<UL>
<LI><A HREF="#mxml_attr_t">mxml_attr_t</A></LI>
<LI><A HREF="#mxml_custom_destroy_cb_t">mxml_custom_destroy_cb_t</A></LI>
<LI><A HREF="#mxml_custom_load_cb_t">mxml_custom_load_cb_t</A></LI>
<LI><A HREF="#mxml_custom_save_cb_t">mxml_custom_save_cb_t</A></LI>
<LI><A HREF="#8_5_5">mxml_custom_t</A></LI>
<LI><A HREF="#mxml_element_t">mxml_element_t</A></LI>
<LI><A HREF="#mxml_error_cb_t">mxml_error_cb_t</A></LI>
<LI><A HREF="#mxml_index_t">mxml_index_t</A></LI>
<LI><A HREF="#mxml_load_cb_t">mxml_load_cb_t</A></LI>
<LI><A HREF="#mxml_node_t">mxml_node_t</A></LI>
<LI><A HREF="#mxml_save_cb_t">mxml_save_cb_t</A></LI>
<LI><A HREF="#mxml_sax_cb_t">mxml_sax_cb_t</A></LI>
<LI><A HREF="#mxml_sax_event_t">mxml_sax_event_t</A></LI>
<LI><A HREF="#mxml_text_t">mxml_text_t</A></LI>
<LI><A HREF="#mxml_value_t">mxml_value_t</A></LI>
</UL>
</LI>
<LI><A HREF="#UNIONS">Unions</A>
<UL>
<LI><A HREF="#mxml_value_u">mxml_value_u</A></LI>
</UL>
</LI>
</UL>
<HR NOSHADE>
<H1 align="right"><A name="INTRO"><IMG align="right" alt="0" height="100"
hspace="10" src="0.gif" width="100"></A>Introduction</H1>
<P>This programmers manual describes Mini-XML version 2.3, a small XML
parsing library that you can use to read and write XML data files in
your C and C++ applications.</P>
<P>Mini-XML was initially developed for the <A href="http://gutenprint.sf.net/">
Gutenprint</A> project to replace the rather large and unwieldy <TT>
libxml2</TT> library with something substantially smaller and
easier-to-use. It all began one morning in June of 2003 when Robert
posted the following sentence to the developer's list:</P>
<BLOCKQUOTE><EM>It's bad enough that we require libxml2, but rolling our
own XML parser is a bit more than we can handle.</EM></BLOCKQUOTE>
<P>I then replied with:</P>
<BLOCKQUOTE><EM>Given the limited scope of what you use in XML, it
should be trivial to code a mini-XML API in a few hundred lines of
code.</EM></BLOCKQUOTE>
<P>I took my own challenge and coded furiously for two days to produced
the initial public release of Mini-XML, total lines of code: 696.
Robert promptly integrated Mini-XML into Gutenprint and removed
libxml2.</P>
<P>Thanks to lots of feedback and support from various developers,
Mini-XML has evolved since then to provide a more complete XML
implementation and now stands at a whopping 3,441 lines of code,
compared to 103,893 lines of code for libxml2 version 2.6.9.</P>
<P>Aside from Gutenprint, Mini-XML is used for the following
projects/software applications:</P>
<UL>
<LI><A href="http://www.cups.org/">Common UNIX Printing System</A></LI>
<LI><A href="http://www.cups.org/ddk/">CUPS Driver Development Kit</A></LI>
<LI><A href="http://www.easysw.com/printpro/">ESP Print Pro</A></LI>
<LI><A href="http://zynaddsubfx.sourceforge.net">ZynAddSubFX</A></LI>
</UL>
<P>Please email me (mxml @ easysw . com) if you would like your project
added or removed from this list, or if you have any comments/quotes you
would like me to publish about your experiences with Mini-XML.</P>
<H2><A NAME="1_1">Organization of This Document</A></H2>
<P>This manual is organized into the following chapters and appendices:</P>
<UL>
<LI>Chapter 1, &quot;<A href="#INSTALL">Building, Installing, and Packaging
Mini-XML</A>&quot;, provides compilation, installation, and packaging
instructions for Mini-XML.</LI>
<LI>Chapter 2, &quot;<A href="#BASICS">Getting Started with Mini-XML</A>&quot;,
shows how to use the Mini-XML library in your programs.</LI>
<LI>Chapter 3, &quot;<A href="#ADVANCED">More Mini-XML Programming Techniques</A>
&quot;, shows additional ways to use the Mini-XML library.</LI>
<LI>Chapter 4, &quot;<A href="#MXMLDOC">Using the mxmldoc Utility</A>&quot;,
describes how to use the <TT>mxmldoc(1)</TT> program to generate
software documentation.</LI>
<LI>Appendix A, &quot;<A href="#LICENSE">Mini-XML License</A>&quot;, provides the
terms and conditions for using and distributing Mini-XML.</LI>
<LI>Appendix B, &quot;<A href="#RELNOTES">Release Notes</A>&quot;, lists the
changes in each release of Mini-XML.</LI>
<LI>Appendix C, &quot;<A href="#REFERENCE">Library Reference</A>&quot;, contains a
complete reference for Mini-XML, generated by <TT>mxmldoc</TT>.</LI>
</UL>
<!-- NEED 10 -->
<H2><A NAME="1_2">Notation Conventions</A></H2>
<P>Various font and syntax conventions are used in this guide. Examples
and their meanings and uses are explained below:</P>
<DL>
<DT><CODE>lpstat</CODE>
<BR> <CODE>lpstat(1)</CODE></DT>
<DD>The names of commands; the first mention of a command or function in
a chapter is followed by a manual page section number.
<BR>
<BR></DD>
<DT><VAR>/var</VAR>
<BR><VAR> /usr/share/cups/data/testprint.ps</VAR></DT>
<DD>File and directory names.
<BR>
<BR></DD>
<DT><TT>Request ID is Printer-123</TT></DT>
<DD>Screen output.
<BR>
<BR></DD>
<DT><KBD>lp -d printer filename ENTER</KBD></DT>
<DD>Literal user input; special keys like <KBD>ENTER</KBD> are in ALL
CAPS.
<BR>
<BR></DD>
<DT>12.3</DT>
<DD>Numbers in the text are written using the period (.) to indicate the
decimal point.
<BR>
<BR></DD>
</DL>
<!-- NEED 10 -->
<H2><A NAME="1_3">Abbreviations</A></H2>
<P>The following abbreviations are used throughout this manual:</P>
<DL>
<DT>Gb</DT>
<DD>Gigabytes, or 1073741824 bytes
<BR>
<BR></DD>
<DT>kb</DT>
<DD>Kilobytes, or 1024 bytes
<BR>
<BR></DD>
<DT>Mb</DT>
<DD>Megabytes, or 1048576 bytes
<BR>
<BR></DD>
<DT>UTF-8, UTF-16</DT>
<DD>Unicode Transformation Format, 8-bit or 16-bit
<BR>
<BR></DD>
<DT>W3C</DT>
<DD>World Wide Web Consortium
<BR>
<BR></DD>
<DT>XML</DT>
<DD>Extensible Markup Language
<BR>
<BR></DD>
</DL>
<!-- NEED 12 -->
<H2><A NAME="1_4">Other References</A></H2>
<DL>
<DT>The Unicode Standard, Version 4.0, Addison-Wesley, ISBN
0-321-18578-1</DT>
<DD>The definition of the Unicode character set which is used for XML.
<BR>
<BR></DD>
<DT><A href="http://www.w3.org/TR/2004/REC-xml-20040204/">Extensible
Markup Language (XML) 1.0 (Third Edition)</A></DT>
<DD>The XML specification from the World Wide Web Consortium (W3C)
<BR>
<BR></DD>
</DL>
<!-- NEED 6 -->
<H2><A NAME="1_5">Legal Stuff</A></H2>
<P>The Mini-XML library is copyright 2003-2007 by Michael Sweet.</P>
<P>This library is free software; you can redistribute it and/or modify
it under the terms of the <A href="#LICENSE">GNU Library General Public
License</A> as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.</P>
<P>This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.</P>
<HR NOSHADE>
<H1 align="right"><A name="INSTALL"><IMG align="right" alt="1" height="100"
hspace="10" src="1.gif" width="100"></A>Building, Installing, and
Packaging Mini-XML</H1>
<P>This chapter describes how to build, install, and package Mini-XML on
your system from the source archive. You will need an ANSI/ISO-C
compatible compiler to build Mini-XML - GCC works, as do most vendors'
C compilers. If you are building Mini-XML on Windows, we recommend
using the Visual C++ environment with the supplied solution file. For
other operating systems, you'll need a POSIX-compatible shell and <TT>
make</TT> program in addition to the C compiler.</P>
<H2><A NAME="2_1">Compiling Mini-XML</A></H2>
<P>Mini-XML comes with both an autoconf-based configure script and a
Visual C++ solution that can be used to compile the library and
associated tools.</P>
<H3><A NAME="2_1_1">Compiling with Visual C++</A></H3>
<P>Open the<VAR> mxml.sln</VAR> solution in the<VAR> vcnet</VAR> folder.
Choose the desired build configuration, &quot;Debug&quot; (the default) or
&quot;Release&quot;, and then choose<VAR> Build Solution</VAR> from the<VAR>
Build</VAR> menu.</P>
<H3><A NAME="2_1_2">Compiling with Command-Line Tools</A></H3>
<P>Type the following command to configure the Mini-XML source code for
your system:</P>
<PRE>
<KBD>./configure ENTER</KBD>
</PRE>
<P>The default install prefix is<VAR> /usr/local</VAR>, which can be
overridden using the <KBD>--prefix</KBD> option:</P>
<PRE>
<KBD>./configure --prefix=/foo ENTER</KBD>
</PRE>
<P>Other configure options can be found using the <KBD>--help</KBD>
option:</P>
<PRE>
<KBD>./configure --help ENTER</KBD>
</PRE>
<P>Once you have configured the software, use the <TT>make(1)</TT>
program to do the build and run the test program to verify that things
are working, as follows:</P>
<PRE>
<KBD>make ENTER</KBD>
</PRE>
<H2><A NAME="2_2">Installing Mini-XML</A></H2>
<P>If you are using Visual C++, copy the<VAR> mxml.lib</VAR> and and<VAR>
mxml.h</VAR> files to the Visual C++<VAR> lib</VAR> and<VAR> include<VAR>
directories, respectively.</VAR></VAR></P>
<P>Otherwise, use the <TT>make</TT> command with the <KBD>install</KBD>
target to install Mini-XML in the configured directories:</P>
<PRE>
<KBD>make install ENTER</KBD>
</PRE>
<H2><A NAME="2_3">Creating Mini-XML Packages</A></H2>
<P>Mini-XML includes two files that can be used to create binary
packages. The first file is<VAR> mxml.spec</VAR> which is used by the <TT>
rpmbuild(8)</TT> software to create Red Hat Package Manager (&quot;RPM&quot;)
packages which are commonly used on Linux. Since <TT>rpmbuild</TT>
wants to compile the software on its own, you can provide it with the
Mini-XML tar file to build the package:</P>
<PRE>
<KBD>rpmbuild -ta mxml-<I>version</I>.tar.gz ENTER</KBD>
</PRE>
<P>The second file is<VAR> mxml.list</VAR> which is used by the <TT>
epm(1)</TT> program to create software packages in a variety of formats.
The <TT>epm</TT> program is available from the following URL:</P>
<PRE>
<A href="http://www.easysw.com/epm/">http://www.easysw.com/epm/</A>
</PRE>
<P>Use the <TT>make</TT> command with the <KBD>epm</KBD> target to
create portable and native packages for your system:</P>
<PRE>
<KBD>make epm ENTER</KBD>
</PRE>
<P>The packages are stored in a subdirectory named<VAR> dist</VAR> for
your convenience. The portable packages utilize scripts and tar files
to install the software on the target system. After extracting the
package archive, use the<VAR> mxml.install</VAR> script to install the
software.</P>
<P>The native packages will be in the local OS's native format: RPM for
Red Hat Linux, DPKG for Debian Linux, PKG for Solaris, and so forth.
Use the corresponding commands to install the native packages.</P>
<HR NOSHADE>
<H1 align="right"><A name="BASICS"><IMG align="right" alt="2" height="100"
hspace="10" src="2.gif" width="100"></A>Getting Started with Mini-XML</H1>
<P>This chapter describes how to write programs that use Mini-XML to
access data in an XML file. Mini-XML provides the following
functionality:</P>
<UL>
<LI>Functions for creating and managing XML documents in memory.</LI>
<LI>Reading of UTF-8 and UTF-16 encoded XML files and strings.</LI>
<LI>Writing of UTF-8 encoded XML files and strings.</LI>
<LI>Support for arbitrary element names, attributes, and attribute
values with no preset limits, just available memory.</LI>
<LI>Support for integer, real, opaque (&quot;cdata&quot;), and text data types in
&quot;leaf&quot; nodes.</LI>
<LI>&quot;Find&quot;, &quot;index&quot;, and &quot;walk&quot; functions for easily accessing data in
an XML document.</LI>
</UL>
<P>Mini-XML doesn't do validation or other types of processing on the
data based upon schema files or other sources of definition
information, nor does it support character entities other than those
required by the XML specification.</P>
<H2><A NAME="3_1">The Basics</A></H2>
<P>Mini-XML provides a single header file which you include:</P>
<PRE>
#include &lt;mxml.h&gt;
</PRE>
<P>The Mini-XML library is included with your program using the <KBD>
-lmxml</KBD> option:</P>
<PRE>
<KBD>gcc -o myprogram myprogram.c -lmxml ENTER</KBD>
</PRE>
<P>If you have the <TT>pkg-config(1)</TT> software installed, you can
use it to determine the proper compiler and linker options for your
installation:</P>
<PRE>
<KBD>pkg-config --cflags mxml ENTER</KBD>
<KBD>pkg-config --libs mxml ENTER</KBD>
</PRE>
<H2><A NAME="3_2">Nodes</A></H2>
<P>Every piece of information in an XML file (elements, text, numbers)
is stored in memory in &quot;nodes&quot;. Nodes are defined by the <A href="#mxml_node_t">
<TT>mxml_node_t</TT></A> structure. The <A href="#mxml_type_t"><TT>type</TT>
</A> member defines the node type (element, integer, opaque, real, or
text) which determines which value you want to look at in the <A href="#mxml_value_t">
<TT>value</TT></A> union.</P>
<!-- NEED 10 -->
<CENTER>
<TABLE border="1" cellpadding="5" cellspacing="0" summary="Mini-XML Node Value Members"
width="80%"><CAPTION align="bottom"><I> Table 2-1: Mini-XML Node Value
Members</I></CAPTION>
<TR bgcolor="#cccccc"><TH>Value</TH><TH>Type</TH><TH>Node member</TH></TR>
<TR><TD>Custom</TD><TD><TT>void *</TT></TD><TD><TT>
node-&gt;value.custom.data</TT></TD></TR>
<TR><TD>Element</TD><TD><TT>char *</TT></TD><TD><TT>
node-&gt;value.element.name</TT></TD></TR>
<TR><TD>Integer</TD><TD><TT>int</TT></TD><TD><TT>node-&gt;value.integer</TT>
</TD></TR>
<TR><TD>Opaque (string)</TD><TD><TT>char *</TT></TD><TD><TT>
node-&gt;value.opaque</TT></TD></TR>
<TR><TD>Real</TD><TD><TT>double</TT></TD><TD><TT>node-&gt;value.real</TT></TD>
</TR>
<TR><TD>Text</TD><TD><TT>char *</TT></TD><TD><TT>node-&gt;value.text.string</TT>
</TD></TR>
</TABLE>
</CENTER>
<P>Each node also has a <TT>user_data</TT> member which allows you to
associate application-specific data with each node as needed.</P>
<P>New nodes are created using the <A href="#mxmlNewElement"><TT>
mxmlNewElement</TT></A>, <A href="#mxmlNewInteger"><TT>mxmlNewInteger</TT>
</A>, <A href="#mxmlNewOpaque"><TT>mxmlNewOpaque</TT></A>, <A href="#mxmlNewReal">
<TT>mxmlNewReal</TT></A>, <A href="#mxmlNewText"><TT>mxmlNewText</TT></A>
<A href="#mxmlNewTextf"><TT>mxmlNewTextf</TT></A> <A href="#mxmlNewXML">
<TT>mxmlNewXML</TT></A> functions. Only elements can have child nodes,
and the top node must be an element, usually the <TT>&lt;?xml
version=&quot;1.0&quot;?&gt;</TT> node created by <TT>mxmlNewXML()</TT>.</P>
<P>Nodes have pointers to the node above (<TT>parent</TT>), below (<TT>
child</TT>), left (<TT>prev</TT>), and right (<TT>next</TT>) of the
current node. If you have an XML file like the following:</P>
<PRE>
&lt;?xml version=&quot;1.0&quot;?&gt;
&lt;data&gt;
&lt;node&gt;val1&lt;/node&gt;
&lt;node&gt;val2&lt;/node&gt;
&lt;node&gt;val3&lt;/node&gt;
&lt;group&gt;
&lt;node&gt;val4&lt;/node&gt;
&lt;node&gt;val5&lt;/node&gt;
&lt;node&gt;val6&lt;/node&gt;
&lt;/group&gt;
&lt;node&gt;val7&lt;/node&gt;
&lt;node&gt;val8&lt;/node&gt;
&lt;/data&gt;
</PRE>
<P>the node tree for the file would look like the following in memory:</P>
<PRE>
?xml
|
data
|
node - node - node - group - node - node
| | | | | |
val1 val2 val3 | val7 val8
|
node - node - node
| | |
val4 val5 val6
</PRE>
<P>where &quot;-&quot; is a pointer to the next node and &quot;|&quot; is a pointer to the
first child node.</P>
<P>Once you are done with the XML data, use the <A href="#mxmlDelete"><TT>
mxmlDelete</TT></A> function to recursively free the memory that is used
for a particular node or the entire tree:</P>
<PRE>
mxmlDelete(tree);
</PRE>
<!-- NEW PAGE -->
<H2><A NAME="3_3">Creating XML Documents</A></H2>
<P>You can create and update XML documents in memory using the various <TT>
mxmlNew</TT> functions. The following code will create the XML document
described in the previous section:</P>
<PRE>
mxml_node_t *xml; /* &lt;?xml ... ?&gt; */
mxml_node_t *data; /* &lt;data&gt; */
mxml_node_t *node; /* &lt;node&gt; */
mxml_node_t *group; /* &lt;group&gt; */
xml = mxmlNewXML(&quot;1.0&quot;);
data = mxmlNewElement(xml, &quot;data&quot;);
node = mxmlNewElement(data, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val1&quot;);
node = mxmlNewElement(data, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val2&quot;);
node = mxmlNewElement(data, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val3&quot;);
group = mxmlNewElement(data, &quot;group&quot;);
node = mxmlNewElement(group, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val4&quot;);
node = mxmlNewElement(group, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val5&quot;);
node = mxmlNewElement(group, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val6&quot;);
node = mxmlNewElement(data, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val7&quot;);
node = mxmlNewElement(data, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val8&quot;);
</PRE>
<P>We start by creating the <TT>&lt;?xml version=&quot;1.0&quot;?&gt;</TT> node common
to all XML files using the <A href="#mxmlNewXML"><TT>mxmlNewXML</TT></A>
function:</P>
<PRE>
xml = mxmlNewXML(&quot;1.0&quot;);
</PRE>
<P>We then create the <TT>&lt;data&gt;</TT> node used for this document using
the <A href="#mxmlNewElement"><TT>mxmlNewElement</TT></A> function. The
first argument specifies the parent node (<TT>xml</TT>) while the
second specifies the element name (<TT>data</TT>):</P>
<PRE>
data = mxmlNewElement(xml, &quot;data&quot;);
</PRE>
<P>Each <TT>&lt;node&gt;...&lt;/node&gt;</TT> in the file is created using the <TT>
mxmlNewElement</TT> and <A href="#mxmlNewText"><TT>mxmlNewText</TT></A>
functions. The first argument of <TT>mxmlNewText</TT> specifies the
parent node (<TT>node</TT>). The second argument specifies whether
whitespace appears before the text - 0 or false in this case. The last
argument specifies the actual text to add:</P>
<PRE>
node = mxmlNewElement(data, &quot;node&quot;);
mxmlNewText(node, 0, &quot;val1&quot;);
</PRE>
<P>The resulting in-memory XML document can then be saved or processed
just like one loaded from disk or a string.</P>
<!-- NEW PAGE -->
<H2><A NAME="3_4">Loading XML</A></H2>
<P>You load an XML file using the <A href="#mxmlLoadFile"><TT>
mxmlLoadFile</TT></A> function:</P>
<PRE>
FILE *fp;
mxml_node_t *tree;
fp = fopen(&quot;filename.xml&quot;, &quot;r&quot;);
tree = mxmlLoadFile(NULL, fp,
MXML_TEXT_CALLBACK);
fclose(fp);
</PRE>
<P>The first argument specifies an existing XML parent node, if any.
Normally you will pass <TT>NULL</TT> for this argument unless you are
combining multiple XML sources. The XML file must contain a complete
XML document including the <TT>?xml</TT> element if the parent node is <TT>
NULL</TT>.</P>
<P>The second argument specifies the stdio file to read from, as opened
by <TT>fopen()</TT> or <TT>popen()</TT>. You can also use <TT>stdin</TT>
if you are implementing an XML filter program.</P>
<P>The third argument specifies a callback function which returns the
value type of the immediate children for a new element node: <TT>
MXML_CUSTOM</TT>, <TT>MXML_IGNORE</TT>, <TT>MXML_INTEGER</TT>, <TT>
MXML_OPAQUE</TT>, <TT>MXML_REAL</TT>, or <TT>MXML_TEXT</TT>. Load
callbacks are described in detail in <A href="#LOAD_CALLBACKS">Chapter
3</A>. The example code uses the <TT>MXML_TEXT_CALLBACK</TT> constant
which specifies that all data nodes in the document contain
whitespace-separated text values. Other standard callbacks include <TT>
MXML_IGNORE_CALLBACK</TT>, <TT>MXML_INTEGER_CALLBACK</TT>, <TT>
MXML_OPAQUE_CALLBACK</TT>, and <TT>MXML_REAL_CALLBACK</TT>.</P>
<P>The <A href="#mxmlLoadString"><TT>mxmlLoadString</TT></A> function
loads XML node trees from a string:</P>
<!-- NEED 10 -->
<PRE>
char buffer[8192];
mxml_node_t *tree;
...
tree = mxmlLoadString(NULL, buffer,
MXML_TEXT_CALLBACK);
</PRE>
<P>The first and third arguments are the same as used for <TT>
mxmlLoadFile()</TT>. The second argument specifies the string or
character buffer to load and must be a complete XML document including
the <TT>?xml</TT> element if the parent node is <TT>NULL</TT>.</P>
<!-- NEW PAGE -->
<H2><A NAME="3_5">Saving XML</A></H2>
<P>You save an XML file using the <A href="#mxmlSaveFile"><TT>
mxmlSaveFile</TT></A> function:</P>
<PRE>
FILE *fp;
mxml_node_t *tree;
fp = fopen(&quot;filename.xml&quot;, &quot;w&quot;);
mxmlSaveFile(tree, fp, MXML_NO_CALLBACK);
fclose(fp);
</PRE>
<P>The first argument is the XML node tree to save. It should normally
be a pointer to the top-level <TT>?xml</TT> node in your XML document.</P>
<P>The second argument is the stdio file to write to, as opened by <TT>
fopen()</TT> or <TT>popen()</TT>. You can also use <TT>stdout</TT> if
you are implementing an XML filter program.</P>
<P>The third argument is the whitespace callback to use when saving the
file. Whitespace callbacks are covered in detail in <A href="SAVE_CALLBACKS">
Chapter 3</A>. The previous example code uses the <TT>MXML_NO_CALLBACK</TT>
constant to specify that no special whitespace handling is required.</P>
<P>The <A href="#mxmlSaveAllocString"><TT>mxmlSaveAllocString</TT></A>,
and <A href="#mxmlSaveString"><TT>mxmlSaveString</TT></A> functions
save XML node trees to strings:</P>
<PRE>
char buffer[8192];
char *ptr;
mxml_node_t *tree;
...
mxmlSaveString(tree, buffer, sizeof(buffer),
MXML_NO_CALLBACK);
...
ptr = mxmlSaveAllocString(tree, MXML_NO_CALLBACK);
</PRE>
<P>The first and last arguments are the same as used for <TT>
mxmlSaveFile()</TT>. The <TT>mxmlSaveString</TT> function takes pointer
and size arguments for saving the XML document to a fixed-size buffer,
while <TT>mxmlSaveAllocString()</TT> returns a string buffer that was
allocated using <TT>malloc()</TT>.</P>
<H3><A NAME="3_5_1">Controlling Line Wrapping</A></H3>
<P>When saving XML documents, Mini-XML normally wraps output lines at
column 75 so that the text is readable in terminal windows. The <A href="#mxmlSetWrapMargin">
<TT>mxmlSetWrapMargin</TT></A> function overrides the default wrap
margin:</P>
<PRE>
/* Set the margin to 132 columns */
mxmlSetWrapMargin(132);
/* Disable wrapping */
mxmlSetWrapMargin(0);
</PRE>
<!-- NEW PAGE-->
<H2><A NAME="3_6">Finding and Iterating Nodes</A></H2>
<P>The <A href="#mxmlWalkPrev"><TT>mxmlWalkPrev</TT></A> and <A href="#mxmlWalkNext">
<TT>mxmlWalkNext</TT></A>functions can be used to iterate through the
XML node tree:</P>
<PRE>
mxml_node_t *node;
node = mxmlWalkPrev(current, tree,
MXML_DESCEND);
node = mxmlWalkNext(current, tree,
MXML_DESCEND);
</PRE>
<P>In addition, you can find a named element/node using the <A href="#mxmlFindElement">
<TT>mxmlFindElement</TT></A> function:</P>
<PRE>
mxml_node_t *node;
node = mxmlFindElement(tree, tree, &quot;name&quot;,
&quot;attr&quot;, &quot;value&quot;,
MXML_DESCEND);
</PRE>
<P>The <TT>name</TT>, <TT>attr</TT>, and <TT>value</TT> arguments can be
passed as <TT>NULL</TT> to act as wildcards, e.g.:</P>
<!-- NEED 4 -->
<PRE>
/* Find the first &quot;a&quot; element */
node = mxmlFindElement(tree, tree, &quot;a&quot;,
NULL, NULL,
MXML_DESCEND);
</PRE>
<!-- NEED 5 -->
<PRE>
/* Find the first &quot;a&quot; element with &quot;href&quot;
attribute */
node = mxmlFindElement(tree, tree, &quot;a&quot;,
&quot;href&quot;, NULL,
MXML_DESCEND);
</PRE>
<!-- NEED 6 -->
<PRE>
/* Find the first &quot;a&quot; element with &quot;href&quot;
to a URL */
node = mxmlFindElement(tree, tree, &quot;a&quot;,
&quot;href&quot;,
&quot;http://www.easysw.com/&quot;,
MXML_DESCEND);
</PRE>
<!-- NEED 5 -->
<PRE>
/* Find the first element with a &quot;src&quot;
attribute */
node = mxmlFindElement(tree, tree, NULL,
&quot;src&quot;, NULL,
MXML_DESCEND);
</PRE>
<!-- NEED 5 -->
<PRE>
/* Find the first element with a &quot;src&quot;
= &quot;foo.jpg&quot; */
node = mxmlFindElement(tree, tree, NULL,
&quot;src&quot;, &quot;foo.jpg&quot;,
MXML_DESCEND);
</PRE>
<P>You can also iterate with the same function:</P>
<PRE>
mxml_node_t *node;
for (node = mxmlFindElement(tree, tree,
&quot;name&quot;,
NULL, NULL,
MXML_DESCEND);
node != NULL;
node = mxmlFindElement(node, tree,
&quot;name&quot;,
NULL, NULL,
MXML_DESCEND))
{
... do something ...
}
</PRE>
<!-- NEED 10 -->
<P>The <TT>MXML_DESCEND</TT> argument can actually be one of three
constants:</P>
<UL>
<LI><TT>MXML_NO_DESCEND</TT> means to not to look at any child nodes in
the element hierarchy, just look at siblings at the same level or
parent nodes until the top node or top-of-tree is reached.
<P>The previous node from &quot;group&quot; would be the &quot;node&quot; element to the
left, while the next node from &quot;group&quot; would be the &quot;node&quot; element to
the right.
<BR>
<BR></P>
</LI>
<LI><TT>MXML_DESCEND_FIRST</TT> means that it is OK to descend to the
first child of a node, but not to descend further when searching.
You'll normally use this when iterating through direct children of a
parent node, e.g. all of the &quot;node&quot; and &quot;group&quot; elements under the
&quot;?xml&quot; parent node in the example above.
<P>This mode is only applicable to the search function; the walk
functions treat this as <TT>MXML_DESCEND</TT> since every call is a
first time.
<BR>
<BR></P>
</LI>
<LI><TT>MXML_DESCEND</TT> means to keep descending until you hit the
bottom of the tree. The previous node from &quot;group&quot; would be the &quot;val3&quot;
node and the next node would be the first node element under &quot;group&quot;.
<P>If you were to walk from the root node &quot;?xml&quot; to the end of the tree
with <TT>mxmlWalkNext()</TT>, the order would be:</P>
<P><TT>?xml data node val1 node val2 node val3 group node val4 node val5
node val6 node val7 node val8</TT></P>
<P>If you started at &quot;val8&quot; and walked using <TT>mxmlWalkPrev()</TT>,
the order would be reversed, ending at &quot;?xml&quot;.</P>
</LI>
</UL>
<HR NOSHADE>
<H1 align="right"><A name="ADVANCED"><IMG align="right" alt="3" height="100"
hspace="10" src="3.gif" width="100"></A>More Mini-XML Programming
Techniques</H1>
<P>This chapter shows additional ways to use the Mini-XML library in
your programs.</P>
<H2><A name="LOAD_CALLBACKS">Load Callbacks</A></H2>
<P><A href="#LOAD_XML">Chapter 2</A> introduced the <A href="#mxmlLoadFile">
<TT>mxmlLoadFile()</TT></A> and <A href="#mxmlLoadString"><TT>
mxmlLoadString()</TT></A> functions. The last argument to these
functions is a callback function which is used to determine the value
type of each data node in an XML document.</P>
<P>Mini-XML defines several standard callbacks for simple XML data
files:</P>
<UL>
<LI><TT>MXML_INTEGER_CALLBACK</TT> - All data nodes contain
whitespace-separated integers.</LI>
<LI><TT>MXML_OPAQUE_CALLBACK</TT> - All data nodes contain opaque
strings (&quot;CDATA&quot;).</LI>
<LI><TT>MXML_REAL_CALLBACK</TT> - All data nodes contain
whitespace-separated floating-point numbers.</LI>
<LI><TT>MXML_TEXT_CALLBACK</TT> - All data nodes contain
whitespace-separated strings.</LI>
</UL>
<P>You can provide your own callback functions for more complex XML
documents. Your callback function will receive a pointer to the current
element node and must return the value type of the immediate children
for that element node: <TT>MXML_INTEGER</TT>, <TT>MXML_OPAQUE</TT>, <TT>
MXML_REAL</TT>, or <TT>MXML_TEXT</TT>. The function is called<I> after</I>
the element and its attributes have been read, so you can look at the
element name, attributes, and attribute values to determine the proper
value type to return.</P>
<!-- NEED 2in -->
<P>The following callback function looks for an attribute named &quot;type&quot;
or the element name to determine the value type for its child nodes:</P>
<PRE>
mxml_type_t
type_cb(mxml_node_t *node)
{
const char *type;
/*
* You can lookup attributes and/or use the
* element name, hierarchy, etc...
*/
type = mxmlElementGetAttr(node, &quot;type&quot;);
if (type == NULL)
type = node-&gt;value.element.name;
if (!strcmp(type, &quot;integer&quot;))
return (MXML_INTEGER);
else if (!strcmp(type, &quot;opaque&quot;))
return (MXML_OPAQUE);
else if (!strcmp(type, &quot;real&quot;))
return (MXML_REAL);
else
return (MXML_TEXT);
}
</PRE>
<P>To use this callback function, simply use the name when you call any
of the load functions:</P>
<PRE>
FILE *fp;
mxml_node_t *tree;
fp = fopen(&quot;filename.xml&quot;, &quot;r&quot;);
tree = mxmlLoadFile(NULL, fp, <B>type_cb</B>);
fclose(fp);
</PRE>
<H2><A name="SAVE_CALLBACKS">Save Callbacks</A></H2>
<P><A href="#LOAD_XML">Chapter 2</A> also introduced the <A href="#mxmlSaveFile">
<TT>mxmlSaveFile()</TT></A>, <A href="#mxmlSaveString"><TT>
mxmlSaveString()</TT></A>, and <A href="#mxmlSaveAllocString"><TT>
mxmlSaveAllocString()</TT></A> functions. The last argument to these
functions is a callback function which is used to automatically insert
whitespace in an XML document.</P>
<P>Your callback function will be called up to four times for each
element node with a pointer to the node and a &quot;where&quot; value of <TT>
MXML_WS_BEFORE_OPEN</TT>, <TT>MXML_WS_AFTER_OPEN</TT>, <TT>
MXML_WS_BEFORE_CLOSE</TT>, or <TT>MXML_WS_AFTER_CLOSE</TT>. The callback
function should return <TT>NULL</TT> if no whitespace should be added
and the string to insert (spaces, tabs, carriage returns, and newlines)
otherwise.</P>
<P>The following whitespace callback can be used to add whitespace to
XHTML output to make it more readable in a standard text editor:</P>
<PRE>
const char *
whitespace_cb(mxml_node_t *node,
int where)
{
const char *name;
/*
* We can conditionally break to a new line
* before or after any element. These are
* just common HTML elements...
*/
name = node-&gt;value.element.name;
if (!strcmp(name, &quot;html&quot;) ||
!strcmp(name, &quot;head&quot;) ||
!strcmp(name, &quot;body&quot;) ||
!strcmp(name, &quot;pre&quot;) ||
!strcmp(name, &quot;p&quot;) ||
!strcmp(name, &quot;h1&quot;) ||
!strcmp(name, &quot;h2&quot;) ||
!strcmp(name, &quot;h3&quot;) ||
!strcmp(name, &quot;h4&quot;) ||
!strcmp(name, &quot;h5&quot;) ||
!strcmp(name, &quot;h6&quot;))
{
/*
* Newlines before open and after
* close...
*/
if (where == MXML_WS_BEFORE_OPEN ||
where == MXML_WS_AFTER_CLOSE)
return (&quot;\n&quot;);
}
else if (!strcmp(name, &quot;dl&quot;) ||
!strcmp(name, &quot;ol&quot;) ||
!strcmp(name, &quot;ul&quot;))
{
/*
* Put a newline before and after list
* elements...
*/
return (&quot;\n&quot;);
}
else if (!strcmp(name, &quot;dd&quot;) ||
!strcmp(name, &quot;dt&quot;) ||
!strcmp(name, &quot;li&quot;))
{
/*
* Put a tab before &lt;li&gt;'s, * &lt;dd&gt;'s,
* and &lt;dt&gt;'s, and a newline after them...
*/
if (where == MXML_WS_BEFORE_OPEN)
return (&quot;\t&quot;);
else if (where == MXML_WS_AFTER_CLOSE)
return (&quot;\n&quot;);
}
/*
* Return NULL for no added whitespace...
*/
return (NULL);
}
</PRE>
<P>To use this callback function, simply use the name when you call any
of the save functions:</P>
<PRE>
FILE *fp;
mxml_node_t *tree;
fp = fopen(&quot;filename.xml&quot;, &quot;w&quot;);
mxmlSaveFile(tree, fp, <B>whitespace_cb</B>);
fclose(fp);
</PRE>
<!-- NEED 10 -->
<H2><A NAME="4_3">Custom Data Types</A></H2>
<P>Mini-XML supports custom data types via global load and save
callbacks. Only a single set of callbacks can be active at any time,
however your callbacks can store additional information in order to
support multiple custom data types as needed. The <TT>MXML_CUSTOM</TT>
node type identifies custom data nodes.</P>
<P>The load callback receives a pointer to the current data node and a
string of opaque character data from the XML source with character
entities converted to the corresponding UTF-8 characters. For example,
if we wanted to support a custom date/time type whose value is encoded
as &quot;yyyy-mm-ddThh:mm:ssZ&quot; (ISO format), the load callback would look
like the following:</P>
<PRE>
typedef struct
{
unsigned year, /* Year */
month, /* Month */
day, /* Day */
hour, /* Hour */
minute, /* Minute */
second; /* Second */
time_t unix; /* UNIX time */
} iso_date_time_t;
int
load_custom(mxml_node_t *node,
const char *data)
{
iso_date_time_t *dt;
struct tm tmdata;
/*
* Allocate data structure...
*/
dt = calloc(1, sizeof(iso_date_time_t));
/*
* Try reading 6 unsigned integers from the
* data string...
*/
if (sscanf(data, &quot;%u-%u-%uT%u:%u:%uZ&quot;,
&amp;(dt-&gt;year), &amp;(dt-&gt;month),
&amp;(dt-&gt;day), &amp;(dt-&gt;hour),
&amp;(dt-&gt;minute),
&amp;(dt-&gt;second)) != 6)
{
/*
* Unable to read numbers, free the data
* structure and return an error...
*/
free(dt);
return (-1);
}
/*
* Range check values...
*/
if (dt-&gt;month &lt;1 || dt-&gt;month &gt; 12 ||
dt-&gt;day &lt;1 || dt-&gt;day &gt; 31 ||
dt-&gt;hour &lt;0 || dt-&gt;hour &gt; 23 ||
dt-&gt;minute &lt;0 || dt-&gt;minute &gt; 59 ||
dt-&gt;second &lt;0 || dt-&gt;second &gt; 59)
{
/*
* Date information is out of range...
*/
free(dt);
return (-1);
}
/*
* Convert ISO time to UNIX time in
* seconds...
*/
tmdata.tm_year = dt-&gt;year - 1900;
tmdata.tm_mon = dt-&gt;month - 1;
tmdata.tm_day = dt-&gt;day;
tmdata.tm_hour = dt-&gt;hour;
tmdata.tm_min = dt-&gt;minute;
tmdata.tm_sec = dt-&gt;second;
dt-&gt;unix = gmtime(&amp;tmdata);
/*
* Assign custom node data and destroy
* function pointers...
*/
node-&gt;value.custom.data = dt;
node-&gt;value.custom.destroy = free;
/*
* Return with no errors...
*/
return (0);
}
</PRE>
<P>The function itself can return 0 on success or -1 if it is unable to
decode the custom data or the data contains an error. Custom data nodes
contain a <TT>void</TT> pointer to the allocated custom data for the
node and a pointer to a destructor function which will free the custom
data when the node is deleted.</P>
<P>The save callback receives the node pointer and returns an allocated
string containing the custom data value. The following save callback
could be used for our ISO date/time type:</P>
<PRE>
char *
save_custom(mxml_node_t *node)
{
char data[255];
iso_date_time_t *dt;
dt = (iso_date_time_t *)node-&gt;custom.data;
snprintf(data, sizeof(data),
&quot;%04u-%02u-%02uT%02u:%02u:%02uZ&quot;,
dt-&gt;year, dt-&gt;month, dt-&gt;day,
dt-&gt;hour, dt-&gt;minute, dt-&gt;second);
return (strdup(data));
}
</PRE>
<P>You register the callback functions using the <A href="#mxmlSetCustomHandlers">
<TT>mxmlSetCustomHandlers()</TT></A> function:</P>
<PRE>
mxmlSetCustomHandlers(<B>load_custom</B>,
<B>save_custom</B>);
</PRE>
<!-- NEED 20 -->
<H2><A NAME="4_4">Changing Node Values</A></H2>
<P>All of the examples so far have concentrated on creating and loading
new XML data nodes. Many applications, however, need to manipulate or
change the nodes during their operation, so Mini-XML provides functions
to change node values safely and without leaking memory.</P>
<P>Existing nodes can be changed using the <A href="#mxmlSetElement"><TT>
mxmlSetElement()</TT></A>, <A href="#mxmlSetInteger"><TT>
mxmlSetInteger()</TT></A>, <A href="#mxmlSetOpaque"><TT>mxmlSetOpaque()</TT>
</A>, <A href="#mxmlSetReal"><TT>mxmlSetReal()</TT></A>, <A href="#mxmlSetText">
<TT>mxmlSetText()</TT></A>, and <A href="#mxmlSetTextf"><TT>
mxmlSetTextf()</TT></A> functions. For example, use the following
function call to change a text node to contain the text &quot;new&quot; with
leading whitespace:</P>
<PRE>
mxml_node_t *node;
mxmlSetText(node, 1, &quot;new&quot;);
</PRE>
<H2><A NAME="4_5">Formatted Text</A></H2>
<P>The <A href="#mxmlNewTextf"><TT>mxmlNewTextf()</TT></A> and <A href="#mxmlSetTextf">
<TT>mxmlSetTextf()</TT></A> functions create and change text nodes,
respectively, using <TT>printf</TT>-style format strings and arguments.
For example, use the following function call to create a new text node
containing a constructed filename:</P>
<PRE>
mxml_node_t *node;
node = mxmlNewTextf(node, 1, &quot;%s/%s&quot;,
path, filename);
</PRE>
<H2><A NAME="4_6">Indexing</A></H2>
<P>Mini-XML provides functions for managing indices of nodes. The
current implementation provides the same functionality as <A href="#mxmlFindElement">
<TT>mxmlFindElement()</TT></A>. The advantage of using an index is that
searching and enumeration of elements is significantly faster. The only
disadvantage is that each index is a static snapshot of the XML
document, so indices are not well suited to XML data that is updated
more often than it is searched. The overhead of creating an index is
approximately equal to walking the XML document tree. Nodes in the
index are sorted by element name and attribute value.</P>
<P>Indices are stored in <A href="#mxml_index_t"><TT>mxml_index_t</TT></A>
structures. The <A href="#mxmlIndexNew"><TT>mxmlIndexNew()</TT></A>
function creates a new index:</P>
<PRE>
mxml_node_t *tree;
mxml_index_t *ind;
ind = mxmlIndexNew(tree, &quot;element&quot;,
&quot;attribute&quot;);
</PRE>
<P>The first argument is the XML node tree to index. Normally this will
be a pointer to the <TT>?xml</TT> element.</P>
<P>The second argument contains the element to index; passing <TT>NULL</TT>
indexes all element nodes alphabetically.</P>
<P>The third argument contains the attribute to index; passing <TT>NULL</TT>
causes only the element name to be indexed.</P>
<P>Once the index is created, the <A href="#mxmlIndexEnum"><TT>
mxmlIndexEnum()</TT></A>, <A href="#mxmlIndexFind"><TT>mxmlIndexFind()</TT>
</A>, and <A href="#mxmlIndexReset"><TT>mxmlIndexReset()</TT></A>
functions are used to access the nodes in the index. The <A href="#mxmlIndexReset">
<TT>mxmlIndexReset()</TT></A> function resets the &quot;current&quot; node pointer
in the index, allowing you to do new searches and enumerations on the
same index. Typically you will call this function prior to your calls
to <A href="#mxmlIndexEnum"><TT>mxmlIndexEnum()</TT></A> and <A href="#mxmlIndexFind">
<TT>mxmlIndexFind()</TT></A>.</P>
<P>The <A href="#mxmlIndexEnum"><TT>mxmlIndexEnum()</TT></A> function
enumerates each of the nodes in the index and can be used in a loop as
follows:</P>
<PRE>
mxml_node_t *node;
mxmlIndexReset(ind);
while ((node = mxmlIndexEnum(ind)) != NULL)
{
// do something with node
}
</PRE>
<P>The <A href="#mxmlIndexFind"><TT>mxmlIndexFind()</TT></A> function
locates the next occurrence of the named element and attribute value in
the index. It can be used to find all matching elements in an index, as
follows:</P>
<PRE>
mxml_node_t *node;
mxmlIndexReset(ind);
while ((node = mxmlIndexFind(ind, &quot;element&quot;,
&quot;attr-value&quot;))
!= NULL)
{
// do something with node
}
</PRE>
<P>The second and third arguments represent the element name and
attribute value, respectively. A <TT>NULL</TT> pointer is used to
return all elements or attributes in the index. Passing <TT>NULL</TT>
for both the element name and attribute value is equivalent to calling <TT>
mxmlIndexEnum</TT>.</P>
<P>When you are done using the index, delete it using the <A href="#mxmlIndexDelete()">
<TT>mxmlIndexDelete()</TT></A> function:</P>
<PRE>
mxmlIndexDelete(ind);
</PRE>
<H2><A NAME="4_7">SAX (Stream) Loading of Documents</A></H2>
<P>Mini-XML supports an implementation of the Simple API for XML (SAX)
which allows you to load and process an XML document as a stream of
nodes. Aside from allowing you to process XML documents of any size,
the Mini-XML implementation also allows you to retain portions of the
document in memory for later processing.</P>
<P>The <A href="#mxmlSAXLoad"><TT>mxmlSAXLoadFd</TT></A>, <A href="#mxmlSAXLoadFile">
<TT>mxmlSAXLoadFile</TT></A>, and <A href="#mxmlSAXLoadString"><TT>
mxmlSAXLoadString</TT></A> functions provide the SAX loading APIs. Each
function works like the corresponding <TT>mxmlLoad</TT> function but
uses a callback to process each node as it is read.</P>
<P>The callback function receives the node, an event code, and a user
data pointer you supply:</P>
<PRE>
void
sax_cb(mxml_node_t *node,
mxml_sax_event_t event,
void *data)
{
... do something ...
}
</PRE>
<P>The event will be one of the following:</P>
<UL>
<LI><TT>MXML_SAX_CDATA</TT> - CDATA was just read</LI>
<LI><TT>MXML_SAX_COMMENT</TT> - A comment was just read</LI>
<LI><TT>MXML_SAX_DATA</TT> - Data (custom, integer, opaque, real, or
text) was just read</LI>
<LI><TT>MXML_SAX_DIRECTIVE</TT> - A processing directive was just read</LI>
<LI><TT>MXML_SAX_ELEMENT_CLOSE</TT> - An open element was just read (<TT>
&lt;element&gt;</TT>)</LI>
<LI><TT>MXML_SAX_ELEMENT_OPEN</TT> - A close element was just read (<TT>
&lt;/element&gt;</TT>)</LI>
</UL>
<P>Elements are<EM> released</EM> after the close element is processed.
All other nodes are released after they are processed. The SAX callback
can<EM> retain</EM> the node using the <A href="#mxmlRetain"><TT>
mxmlRetain</TT></A> function. For example, the following SAX callback
will retain all nodes, effectively simulating a normal in-memory load:</P>
<PRE>
void
sax_cb(mxml_node_t *node,
mxml_sax_event_t event,
void *data)
{
if (event != MXML_SAX_ELEMENT_CLOSE)
mxmlRetain(node);
}
</PRE>
<P>More typically the SAX callback will only retain a small portion of
the document that is needed for post-processing. For example, the
following SAX callback will retain the title and headings in an XHTML
file. It also retains the (parent) elements like <TT>&lt;html&gt;</TT>, <TT>
&lt;head&gt;</TT>, and <TT>&lt;body&gt;</TT>, and processing directives like <TT>
&lt;?xml ... ?&gt;</TT> and <TT>&lt;!DOCTYPE ... &gt;</TT>:</P>
<!-- NEED 10 -->
<PRE>
void
sax_cb(mxml_node_t *node,
mxml_sax_event_t event,
void *data)
{
if (event == MXML_SAX_ELEMENT_OPEN)
{
/*
* Retain headings and titles...
*/
char *name = node-&gt;value.element.name;
if (!strcmp(name, &quot;html&quot;) ||
!strcmp(name, &quot;head&quot;) ||
!strcmp(name, &quot;title&quot;) ||
!strcmp(name, &quot;body&quot;) ||
!strcmp(name, &quot;h1&quot;) ||
!strcmp(name, &quot;h2&quot;) ||
!strcmp(name, &quot;h3&quot;) ||
!strcmp(name, &quot;h4&quot;) ||
!strcmp(name, &quot;h5&quot;) ||
!strcmp(name, &quot;h6&quot;))
mxmlRetain(node);
}
else if (event == MXML_SAX_DIRECTIVE)
mxmlRetain(node);
else if (event == MXML_SAX_DATA &amp;&amp;
node-&gt;parent-&gt;ref_count &gt; 1)
{
/*
* If the parent was retained, then retain
* this data node as well.
*/
mxmlRetain(node);
}
}
</PRE>
<P>The resulting skeleton document tree can then be searched just like
one loaded using the <TT>mxmlLoad</TT> functions. For example, a filter
that reads an XHTML document from stdin and then shows the title and
headings in the document would look like:</P>
<PRE>
mxml_node_t *doc, *title, *body, *heading;
doc = mxmlSAXLoadFd(NULL, 0,
MXML_TEXT_CALLBACK,
<B>sax_cb</B>, NULL);
title = mxmlFindElement(doc, doc, &quot;title&quot;,
NULL, NULL,
MXML_DESCEND);
if (title)
print_children(title);
body = mxmlFindElement(doc, doc, &quot;body&quot;,
NULL, NULL,
MXML_DESCEND);
if (body)
{
for (heading = body-&gt;child;
heading;
heading = heading-&gt;next)
print_children(heading);
}
</PRE>
<HR NOSHADE>
<H1 align="right"><A name="MXMLDOC"><IMG align="right" alt="4" height="100"
hspace="10" src="4.gif" width="100"></A>Using the mxmldoc Utility</H1>
<H2><A NAME="5_1">The Basics</A></H2>
<P>Originally developed to generate the Mini-XML and CUPS API
documentation, the <TT>mxmldoc(1)</TT> program converts C and C++
source files into an intermediate XML format and uses in-line comments
rather than comment headers to annotate functions, types, and
constants.</P>
<P></P>
<H2><A NAME="5_2">Commenting Your Code</A></H2>
<H2><A NAME="5_3">Creating HTML Documentation</A></H2>
<H2><A NAME="5_4">Creating Man Pages</A></H2>
<H2><A NAME="5_5">The XML Schema</A></H2>
<P><I>mxmldoc</I> scans the specified C and C++ source files to produce
an XML representation of globally accessible classes, constants,
enumerations, functions, structures, typedefs, unions, and variables.
The XML file is updated as necessary and a HTML representation of the
XML file is written to the standard output. If no source files are
specified then the current XML file is converted to HTML on the
standard output.</P>
<P>In general, any C or C++ source code is handled by<I> mxmldoc</I>,
however it was specifically written to handle code with documentation
that is formatted according to the CUPS Configuration Management Plan
which is available at &quot;http://www.cups.org/documentation.php&quot;.</P>
<HR NOSHADE>
<H1 align="right"><A name="LICENSE"><IMG align="right" alt="A" height="100"
hspace="10" src="A.gif" width="100"></A>Mini-XML License</H1>
<P>The Mini-XML library and included programs are provided under the
terms of the GNU Library General Public License (LGPL) with the
following exceptions:</P>
<OL>
<LI>Static linking of applications to the Mini-XML library does not
constitute a derivative work and does not require the author to provide
source code for the application, use the shared Mini-XML libraries, or
link their applications against a user-supplied version of Mini-XML.
<P><I>If you link the application to a modified version of Mini-XML,
then the changes to Mini-XML must be provided under the terms of the
LGPL in sections 1, 2, and 4.</I></P>
</LI>
<LI>You do not have to provide a copy of the Mini-XML license with
programs that are linked to the Mini-XML library, nor do you have to
identify the Mini-XML license in your program or documentation as
required by section 6 of the LGPL.</LI>
</OL>
<P align="center"><B>GNU LIBRARY GENERAL PUBLIC LICENSE</B></P>
<P align="center">Version 2, June 1991
<BR> Copyright (C) 1991 Free Software Foundation, Inc.
<BR> 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
<BR> Everyone is permitted to copy and distribute verbatim copies of
this license document, but changing it is not allowed.
<BR> [This is the first released version of the library GPL. It is
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Library by all those who receive copies directly or indirectly through
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be to refrain entirely from distribution of the Library.</P>
<P>If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
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<P>It is not the purpose of this section to induce you to infringe any
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choice.</P>
<P>This section is intended to make thoroughly clear what is believed to
be a consequence of the rest of this License.</P>
<P><STRONG>12.</STRONG> If the distribution and/or use of the Library is
restricted in certain countries either by patents or by copyrighted
interfaces, the original copyright holder who places the Library under
this License may add an explicit geographical distribution limitation
excluding those countries, so that distribution is permitted only in or
among countries not thus excluded. In such case, this License
incorporates the limitation as if written in the body of this License.</P>
<P><STRONG>13.</STRONG> The Free Software Foundation may publish revised
and/or new versions of the Library General Public License from time to
time. Such new versions will be similar in spirit to the present
version, but may differ in detail to address new problems or concerns.</P>
<P>Each version is given a distinguishing version number. If the Library
specifies a version number of this License which applies to it and &quot;any
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conditions either of that version or of any later version published by
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<P><STRONG>14.</STRONG> If you wish to incorporate parts of the Library
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<P align="center"><B>NO WARRANTY</B></P>
<P><STRONG>15.</STRONG> BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE,
THERE IS NO WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY
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<P align="center"><B>END OF TERMS AND CONDITIONS</B></P>
<P><B>How to Apply These Terms to Your New Libraries</B></P>
<P>If you develop a new library, and you want it to be of the greatest
possible use to the public, we recommend making it free software that
everyone can redistribute and change. You can do so by permitting
redistribution under these terms (or, alternatively, under the terms of
the ordinary General Public License).</P>
<P>To apply these terms, attach the following notices to the library. It
is safest to attach them to the start of each source file to most
effectively convey the exclusion of warranty; and each file should have
at least the &quot;copyright&quot; line and a pointer to where the full notice is
found.</P>
<UL>
<P><VAR>one line to give the library's name and an idea of what it does.</VAR>
<BR> Copyright (C)<VAR> year</VAR><VAR> name of author</VAR></P>
<P>This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as
published by the Free Software Foundation; either version 2.1 of the
License, or (at your option) any later version.</P>
<P>This library is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
General Public License for more details.</P>
<P>You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</P>
</UL>
<P>Also add information on how to contact you by electronic and paper
mail.</P>
<P>You should also get your employer (if you work as a programmer) or
your school, if any, to sign a &quot;copyright disclaimer&quot; for the library,
if necessary. Here is a sample; alter the names:</P>
<UL>
<P>Yoyodyne, Inc., hereby disclaims all copyright interest in the
library `Frob' (a library for tweaking knobs) written by James Random
Hacker.</P>
<P><VAR>signature of Ty Coon</VAR>, 1 April 1990 Ty Coon, President of
Vice</P>
</UL>
<P>That's all there is to it!</P>
<HR NOSHADE>
<H1 align="right"><A name="RELNOTES"><IMG align="right" alt="B" height="100"
hspace="10" src="B.gif" width="100"></A>Release Notes</H1>
<H2><A NAME="7_1">Changes in Mini-XML 2.3</A></H2>
<UL>
<LI>Added two exceptions to the LGPL to support static linking of
applications against Mini-XML</LI>
<LI>The mxmldoc utility can now generate man pages, too.</LI>
<LI>Added a mxmlNewXML() function</LI>
<LI>Added a mxmlElementSetAttrf() function (STR #43)</LI>
<LI>Added a snprintf() emulation function for the test program (STR #32)</LI>
<LI>Added the _CRT_SECURE_NO_DEPRECATE definition when building on VC++
2005 (STR #36)</LI>
<LI>mxmlLoad*() did not detect missing &gt; characters in elements (STR
#41)</LI>
<LI>mxmlLoad*() did not detect missing close tags at the end of an XML
document (STR #45)</LI>
<LI>Added user_data and ref_count members to mxml_node_t structure</LI>
<LI>Added mxmlReleaseNode() and mxmlRetainNode() APIs for
reference-counted nodes</LI>
<LI>Added mxmlSetWrapMargin() to control the wrapping of XML output</LI>
<LI>Added conditional check for EINTR error code for certain Windows
compilers that do not define it (STR #33)</LI>
<LI>The mxmldoc program now generates correct HTML 4.0 output -
previously it generated invalid XHTML</LI>
<LI>The mxmldoc program now supports &quot;@deprecated@, &quot;@private@&quot;, and
&quot;@since version@&quot; comments</LI>
<LI>Fixed function and enumeration type bugs in mxmldoc</LI>
<LI>Fixed the XML schema for mxmldoc</LI>
<LI>The mxmldoc program now supports --intro, --section, and --title
options</LI>
<LI>The mxmlLoad*() functions could leak a node on an error (STR #27)</LI>
<LI>The mxml_vsnprintf() function could get in an infinite loop on a
buffer overflow (STR #25)</LI>
<LI>Added new mxmlNewCDATA() and mxmlSetCDATA() functions to create and
set CDATA nodes, which are really just special element nodes</LI>
<LI>Added new MXML_IGNORE type and MXML_IGNORE_CB callback to ignore
non-element nodes, e.g. whitespace</LI>
<LI>mxmlLoad*() did not treat custom data as opaque, so whitespace
characters would be lost</LI>
</UL>
<H2><A NAME="7_2">Changes in Mini-XML 2.2.2</A></H2>
<UL>
<LI>mxmlLoad*() did not treat custom data as opaque, so whitespace
characters would be lost.</LI>
</UL>
<H2><A NAME="7_3">Changes in Mini-XML 2.2.1</A></H2>
<UL>
<LI>mxmlLoadFd(), mxmlLoadFile(), and mxmlLoadString() now correctly
return NULL on error (STR #21)</LI>
<LI>mxmlNewInteger(), mxmlNewOpaque(), mxmlNewReal(), mxmlNewText(), and
mxmlNewTextf() incorrectly required a parent node (STR #22)</LI>
<LI>Fixed an XML output bug in mxmldoc.</LI>
<LI>The &quot;make install&quot; target now uses the install command to set the
proper permissions on UNIX/Linux/OSX.</LI>
<LI>Fixed a MingW/Cygwin compilation problem (STR #18)</LI>
</UL>
<H2><A NAME="7_4">Changes in Mini-XML 2.2</A></H2>
<UL>
<LI>Added shared library support (STR #17)</LI>
<LI>mxmlLoad*() now returns an error when an XML stream contains illegal
control characters (STR #10)</LI>
<LI>mxmlLoad*() now returns an error when an element contains two
attributes with the same name in conformance with the XML spec (STR
#16)</LI>
<LI>Added support for CDATA (STR #14, STR #15)</LI>
<LI>Updated comment and processing instruction handling - no entity
support per XML specification.</LI>
<LI>Added checking for invalid comment termination (&quot;---&gt;&quot; is not
allowed)</LI>
</UL>
<H2><A NAME="7_5">Changes in Mini-XML 2.1</A></H2>
<UL>
<LI>Added support for custom data nodes (STR #6)</LI>
<LI>Now treat UTF-8 sequences which are longer than necessary as an
error (STR #4)</LI>
<LI>Fixed entity number support (STR #8)</LI>
<LI>Fixed mxmlLoadString() bug with UTF-8 (STR #7)</LI>
<LI>Fixed entity lookup bug (STR #5)</LI>
<LI>Added mxmlLoadFd() and mxmlSaveFd() functions.</LI>
<LI>Fixed multi-word UTF-16 handling.</LI>
</UL>
<H2><A NAME="7_6">Changes in Mini-XML 2.0</A></H2>
<UL>
<LI>New programmers manual.</LI>
<LI>Added Visual C++ project files for Microsoft Windows users.</LI>
<LI>Added optimizations to mxmldoc, mxmlSaveFile(), and mxmlIndexNew()
(STR #2)</LI>
<LI>mxmlEntityAddCallback() now returns an integer status (STR #2)</LI>
<LI>Added UTF-16 support (input only; all output is UTF-8)</LI>
<LI>Added index functions to build a searchable index of XML nodes.</LI>
<LI>Added character entity callback interface to support additional
character entities beyond those defined in the XHTML specification.</LI>
<LI>Added support for XHTML character entities.</LI>
<LI>The mxmldoc utility now produces XML output which conforms to an
updated XML schema, described in the file &quot;doc/mxmldoc.xsd&quot;.</LI>
<LI>Changed the whitespace callback interface to return strings instead
of a single character, allowing for greater control over the formatting
of XML files written using Mini-XML. THIS CHANGE WILL REQUIRE CHANGES
TO YOUR 1.x CODE IF YOU USE WHITESPACE CALLBACKS.</LI>
<LI>The mxmldoc utility now produces XML output which conforms to an
updated XML schema, described in the file &quot;doc/mxmldoc.xsd&quot;.</LI>
<LI>Changed the whitespace callback interface to return strings instead
of a single character, allowing for greater control over the formatting
of XML files written using Mini-XML. THIS CHANGE WILL REQUIRE CHANGES
TO YOUR 1.x CODE IF YOU USE WHITESPACE CALLBACKS.</LI>
<LI>The mxmldoc utility is now capable of documenting C++ classes,
functions, and structures, and correctly handles C++ comments.</LI>
<LI>Added new modular tests for mxmldoc.</LI>
<LI>Updated the mxmldoc output to be more compatible with embedding in
manuals produced with HTMLDOC.</LI>
<LI>The makefile incorrectly included a &quot;/&quot; separator between the
destination path and install path. This caused problems when building
and installing with MingW.</LI>
</UL>
<H2><A NAME="7_7">Changes in Mini-XML 1.3</A></H2>
<UL>
<LI>Fixes for mxmldoc.</LI>
<LI>Added support for reading standard HTML entity names.</LI>
<LI>mxmlLoadString/File() did not decode character entities in element
names, attribute names, or attribute values.</LI>
<LI>mxmlLoadString/File() would crash when loading non- conformant XML
data under an existing parent (top) node.</LI>
<LI>Fixed several bugs in the mxmldoc utility.</LI>
<LI>Added new error callback function to catch a variety of errors and
log them to someplace other than stderr.</LI>
<LI>The mxmlElementSetAttr() function now allows for NULL attribute
values.</LI>
<LI>The load and save functions now properly handle quoted element and
attribute name strings properly, e.g. for !DOCTYPE declarations.</LI>
</UL>
<H2><A NAME="7_8">Changes in Mini-XML 1.2</A></H2>
<UL>
<LI>Added new &quot;set&quot; methods to set the value of a node.</LI>
<LI>Added new formatted text methods mxmlNewTextf() and mxmlSetTextf()
to create/set a text node value using printf-style formats.</LI>
<LI>Added new standard callbacks for use with the mxmlLoad functions.</LI>
<LI>Updated the HTML documentation to include examples of the walk and
load function output.</LI>
<LI>Added --with/without-ansi configure option to control the strdup()
function check.</LI>
<LI>Added --with/without-snprintf configure option to control the
snprintf() and vsnprintf() function checks.</LI>
</UL>
<H2><A NAME="7_9">Changes in Mini-XML 1.1.2</A></H2>
<UL>
<LI>The mxml(3) man page wasn't updated for the string functions.</LI>
<LI>mxmlSaveString() returned the wrong number of characters.</LI>
<LI>mxml_add_char() updated the buffer pointer in the wrong place.</LI>
</UL>
<H2><A NAME="7_10">Changes in Mini-XML 1.1.1</A></H2>
<UL>
<LI>The private mxml_add_ch() function did not update the
start-of-buffer pointer which could cause a crash when using
mxmlSaveString().</LI>
<LI>The private mxml_write_ws() function called putc() instead of using
the proper callback which could cause a crash when using
mxmlSaveString().</LI>
<LI>Added a mxmlSaveAllocString() convenience function for saving an XML
node tree to an allocated string.</LI>
</UL>
<H2><A NAME="7_11">Changes in Mini-XML 1.1</A></H2>
<UL>
<LI>The mxmlLoadFile() function now uses dynamically allocated string
buffers for element names, attribute names, and attribute values.
Previously they were capped at 16383, 255, and 255 bytes, respectively.</LI>
<LI>Added a new mxmlLoadString() function for loading an XML node tree
from a string.</LI>
<LI>Added a new mxmlSaveString() function for saving an XML node tree to
a string.</LI>
<LI>Add emulation of strdup() if the local platform does not provide the
function.</LI>
</UL>
<H2><A NAME="7_12">Changes in Mini-XML 1.0</A></H2>
<UL>
<LI>The mxmldoc program now handles function arguments, structures,
unions, enumerations, classes, and typedefs properly.</LI>
<LI>Documentation provided via mxmldoc and more in-line comments in the
code.</LI>
<LI>Added man pages and packaging files.</LI>
</UL>
<H2><A NAME="7_13">Changes in Mini-XML 0.93</A></H2>
<UL>
<LI>New mxmldoc example program that is also used to create and update
code documentation using XML and produce HTML reference pages.</LI>
<LI>Added mxmlAdd() and mxmlRemove() functions to add and remove nodes
from a tree. This provides more flexibility over where the nodes are
inserted and allows nodes to be moved within the tree as needed.</LI>
<LI>mxmlLoadFile() now correctly handles comments.</LI>
<LI>mxmlLoadFile() now supports the required &quot;gt&quot;, &quot;quot&quot;, and &quot;nbsp&quot;
character entities.</LI>
<LI>mxmlSaveFile() now uses newlines as whitespace when valid to do so.</LI>
<LI>mxmlFindElement() now also takes attribute name and attribute value
string arguments to limit the search to specific elements with
attributes and/or values.</LI>
NULL pointers can be used as &quot;wildcards&quot;.
<LI>Added uninstall target to makefile, and auto-reconfig if Makefile.in
or configure.in are changed.</LI>
<LI>mxmlFindElement(), mxmlWalkNext(), and mxmlWalkPrev() now all
provide &quot;descend&quot; arguments to control whether they descend into child
nodes in the tree.</LI>
<LI>Fixed some whitespace issues in mxmlLoadFile().</LI>
<LI>Fixed Unicode output and whitespace issues in mxmlSaveFile().</LI>
<LI>mxmlSaveFile() now supports a whitespace callback to provide more
human-readable XML output under program control.</LI>
</UL>
<H2><A NAME="7_14">Changes in Mini-XML 0.92</A></H2>
<UL>
<LI>mxmlSaveFile() didn't return a value on success.</LI>
</UL>
<H2><A NAME="7_15">Changes in Mini-XML 0.91</A></H2>
<UL>
<LI>mxmlWalkNext() would go into an infinite loop.</LI>
</UL>
<H2><A NAME="7_16">Changes in Mini-XML 0.9</A></H2>
<UL>
<LI>Initial public release.</LI>
</UL>
<HR NOSHADE>
<H1 align="right"><A name="REFERENCE"><IMG align="right" alt="C" height="100"
hspace="10" src="C.gif" width="100"></A>Library Reference</H1>
<H2 class="title"><A NAME="8_1">Contents</A></H2>
<UL>
<LI><A href="#ENUMERATIONS">Enumerations</A></LI>
<LI><A href="#FUNCTIONS">Functions</A></LI>
<LI><A href="#STRUCTURES">Structures</A></LI>
<LI><A href="#TYPES">Types</A></LI>
<LI><A href="#UNIONS">Unions</A></LI>
</UL>
<!-- NEW PAGE -->
<H2 class="title"><A name="ENUMERATIONS">Enumerations</A></H2>
<UL>
<LI><A href="#mxml_sax_event_e"><TT>mxml_sax_event_e</TT></A></LI>
<LI><A href="#mxml_type_e"><TT>mxml_type_e</TT></A></LI>
</UL>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_sax_event_e">mxml_sax_event_e</A></H3>
<H4>Description</H4>
<P>SAX event type.</P>
<H4>Values</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Values" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>MXML_SAX_CDATA</TT></TD><TD>CDATA node</TD></TR>
<TR><TD><TT>MXML_SAX_COMMENT</TT></TD><TD>Comment node</TD></TR>
<TR><TD><TT>MXML_SAX_DATA</TT></TD><TD>Data node</TD></TR>
<TR><TD><TT>MXML_SAX_DIRECTIVE</TT></TD><TD>Processing directive node</TD>
</TR>
<TR><TD><TT>MXML_SAX_ELEMENT_CLOSE</TT></TD><TD>Element closed</TD></TR>
<TR><TD><TT>MXML_SAX_ELEMENT_OPEN</TT></TD><TD>Element opened</TD></TR>
</TABLE>
</DIV>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_type_e">mxml_type_e</A></H3>
<H4>Description</H4>
<P>The XML node type.</P>
<H4>Values</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Values" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>MXML_CUSTOM</TT>
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;</TD><TD>Custom data</TD></TR>
<TR><TD><TT>MXML_ELEMENT</TT></TD><TD>XML element with attributes</TD></TR>
<TR><TD><TT>MXML_IGNORE</TT>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</TD><TD>Ignore/throw away node</TD></TR>
<TR><TD><TT>MXML_INTEGER</TT></TD><TD>Integer value</TD></TR>
<TR><TD><TT>MXML_OPAQUE</TT></TD><TD>Opaque string</TD></TR>
<TR><TD><TT>MXML_REAL</TT></TD><TD>Real value</TD></TR>
<TR><TD><TT>MXML_TEXT</TT></TD><TD>Text fragment</TD></TR>
</TABLE>
</DIV>
<!-- NEW PAGE -->
<H2 class="title"><A name="FUNCTIONS">Functions</A></H2>
<UL>
<LI><A href="#mxmlAdd"><TT>mxmlAdd()</TT></A></LI>
<LI><A href="#mxmlDelete"><TT>mxmlDelete()</TT></A></LI>
<LI><A href="#mxmlElementGetAttr"><TT>mxmlElementGetAttr()</TT></A></LI>
<LI><A href="#mxmlElementSetAttr"><TT>mxmlElementSetAttr()</TT></A></LI>
<LI><A href="#mxmlElementSetAttrf"><TT>mxmlElementSetAttrf()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlEntityAddCallback"><TT>mxmlEntityAddCallback()</TT></A>
</LI>
<LI><A href="#mxmlEntityGetName"><TT>mxmlEntityGetName()</TT></A></LI>
<LI><A href="#mxmlEntityGetValue"><TT>mxmlEntityGetValue()</TT></A></LI>
<LI><A href="#mxmlEntityRemoveCallback"><TT>mxmlEntityRemoveCallback()</TT>
</A></LI>
<LI><A href="#mxmlFindElement"><TT>mxmlFindElement()</TT></A></LI>
<LI><A href="#mxmlIndexDelete"><TT>mxmlIndexDelete()</TT></A></LI>
<LI><A href="#mxmlIndexEnum"><TT>mxmlIndexEnum()</TT></A></LI>
<LI><A href="#mxmlIndexFind"><TT>mxmlIndexFind()</TT></A></LI>
<LI><A href="#mxmlIndexNew"><TT>mxmlIndexNew()</TT></A></LI>
<LI><A href="#mxmlIndexReset"><TT>mxmlIndexReset()</TT></A></LI>
<LI><A href="#mxmlLoadFd"><TT>mxmlLoadFd()</TT></A></LI>
<LI><A href="#mxmlLoadFile"><TT>mxmlLoadFile()</TT></A></LI>
<LI><A href="#mxmlLoadString"><TT>mxmlLoadString()</TT></A></LI>
<LI><A href="#mxmlNewCDATA"><TT>mxmlNewCDATA()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlNewCustom"><TT>mxmlNewCustom()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;</LI>
<LI><A href="#mxmlNewElement"><TT>mxmlNewElement()</TT></A></LI>
<LI><A href="#mxmlNewInteger"><TT>mxmlNewInteger()</TT></A></LI>
<LI><A href="#mxmlNewOpaque"><TT>mxmlNewOpaque()</TT></A></LI>
<LI><A href="#mxmlNewReal"><TT>mxmlNewReal()</TT></A></LI>
<LI><A href="#mxmlNewText"><TT>mxmlNewText()</TT></A></LI>
<LI><A href="#mxmlNewTextf"><TT>mxmlNewTextf()</TT></A></LI>
<LI><A href="#mxmlNewXML"><TT>mxmlNewXML()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlRelease"><TT>mxmlRelease()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlRemove"><TT>mxmlRemove()</TT></A></LI>
<LI><A href="#mxmlRetain"><TT>mxmlRetain()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlSAXLoadFd"><TT>mxmlSAXLoadFd()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlSAXLoadFile"><TT>mxmlSAXLoadFile()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlSAXLoadString"><TT>mxmlSAXLoadString()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlSaveAllocString"><TT>mxmlSaveAllocString()</TT></A></LI>
<LI><A href="#mxmlSaveFd"><TT>mxmlSaveFd()</TT></A></LI>
<LI><A href="#mxmlSaveFile"><TT>mxmlSaveFile()</TT></A></LI>
<LI><A href="#mxmlSaveString"><TT>mxmlSaveString()</TT></A></LI>
<LI><A href="#mxmlSetCDATA"><TT>mxmlSetCDATA()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlSetCustom"><TT>mxmlSetCustom()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;</LI>
<LI><A href="#mxmlSetCustomHandlers"><TT>mxmlSetCustomHandlers()</TT></A>
</LI>
<LI><A href="#mxmlSetElement"><TT>mxmlSetElement()</TT></A></LI>
<LI><A href="#mxmlSetErrorCallback"><TT>mxmlSetErrorCallback()</TT></A></LI>
<LI><A href="#mxmlSetInteger"><TT>mxmlSetInteger()</TT></A></LI>
<LI><A href="#mxmlSetOpaque"><TT>mxmlSetOpaque()</TT></A></LI>
<LI><A href="#mxmlSetReal"><TT>mxmlSetReal()</TT></A></LI>
<LI><A href="#mxmlSetText"><TT>mxmlSetText()</TT></A></LI>
<LI><A href="#mxmlSetTextf"><TT>mxmlSetTextf()</TT></A></LI>
<LI><A href="#mxmlSetWrapMargin"><TT>mxmlSetWrapMargin()</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;</LI>
<LI><A href="#mxmlWalkNext"><TT>mxmlWalkNext()</TT></A></LI>
<LI><A href="#mxmlWalkPrev"><TT>mxmlWalkPrev()</TT></A></LI>
</UL>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlAdd">mxmlAdd()</A></H3>
<H4>Description</H4>
<P>Add a node to a tree.</P>
<P>Adds the specified node to the parent. If the child argument is not
NULL, puts the new node before or after the specified child depending
on the value of the where argument. If the child argument is NULL, puts
the new node at the beginning of the child list (MXML_ADD_BEFORE) or at
the end of the child list (MXML_ADD_AFTER). The constant
MXML_ADD_TO_PARENT can be used to specify a NULL child pointer.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlAdd( <A href="#mxml_node_t">mxml_node_t</A> * parent, int
where, <A href="#mxml_node_t">mxml_node_t</A> * child, <A href="#mxml_node_t">
mxml_node_t</A> * node);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node</TD></TR>
<TR><TD><TT>where</TT></TD><TD>Where to add, MXML_ADD_BEFORE or
MXML_ADD_AFTER</TD></TR>
<TR><TD><TT>child</TT></TD><TD>Child node for where or
MXML_ADD_TO_PARENT</TD></TR>
<TR><TD><TT>node</TT></TD><TD>Node to add</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlDelete">mxmlDelete()</A></H3>
<H4>Description</H4>
<P>Delete a node and all of its children.</P>
<P>If the specified node has a parent, this function first removes the
node from its parent using the mxmlRemove() function.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlDelete( <A href="#mxml_node_t">mxml_node_t</A> * node);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to delete</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlElementGetAttr">mxmlElementGetAttr()</A></H3>
<H4>Description</H4>
<P>Get an attribute.</P>
<P>This function returns NULL if the node is not an element or the named
attribute does not exist.</P>
<H4>Syntax</H4>
<P> <TT>const char *
<BR> mxmlElementGetAttr( <A href="#mxml_node_t">mxml_node_t</A> * node,
const char * name);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Element node</TD></TR>
<TR><TD><TT>name</TT></TD><TD>Name of attribute</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Attribute value or NULL</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlElementSetAttr">mxmlElementSetAttr()</A></H3>
<H4>Description</H4>
<P>Set an attribute.</P>
<P>If the named attribute already exists, the value of the attribute is
replaced by the new string value. The string value is copied into the
element node. This function does nothing if the node is not an element.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlElementSetAttr( <A href="#mxml_node_t">mxml_node_t</A> * node,
const char * name, const char * value);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Element node</TD></TR>
<TR><TD><TT>name</TT></TD><TD>Name of attribute</TD></TR>
<TR><TD><TT>value</TT></TD><TD>Attribute value</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_5">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlElementSetAttrf">mxmlElementSetAttrf()</A></A>
</H3>
<H4>Description</H4>
<P>Set an attribute with a formatted value.</P>
<P>If the named attribute already exists, the value of the attribute is
replaced by the new formatted string. The formatted string value is
copied into the element node. This function does nothing if the node is
not an element.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlElementSetAttrf( <A href="#mxml_node_t">mxml_node_t</A> * node,
const char * name, const char * format, ...);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Element node</TD></TR>
<TR><TD><TT>name</TT></TD><TD>Name of attribute</TD></TR>
<TR><TD><TT>format</TT></TD><TD>Printf-style attribute value</TD></TR>
<TR><TD><TT>...</TT></TD><TD>Additional arguments as needed</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlEntityAddCallback">
mxmlEntityAddCallback()</A></H3>
<H4>Description</H4>
<P>Add a callback to convert entities to Unicode.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlEntityAddCallback(void);</TT></P>
<H4>Arguments</H4>
<P>None.</P>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlEntityGetName">mxmlEntityGetName()</A></H3>
<H4>Description</H4>
<P>Get the name that corresponds to the character value.</P>
<P>If val does not need to be represented by a named entity, NULL is
returned.</P>
<H4>Syntax</H4>
<P> <TT>const char *
<BR> mxmlEntityGetName( int val);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>val</TT></TD><TD>Character value</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Entity name or NULL</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlEntityGetValue">mxmlEntityGetValue()</A></H3>
<H4>Description</H4>
<P>Get the character corresponding to a named entity.</P>
<P>The entity name can also be a numeric constant. -1 is returned if the
name is not known.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlEntityGetValue( const char * name);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>name</TT></TD><TD>Entity name</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Character value or -1 on error</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlEntityRemoveCallback">
mxmlEntityRemoveCallback()</A></H3>
<H4>Description</H4>
<P>Remove a callback.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlEntityRemoveCallback(void);</TT></P>
<H4>Arguments</H4>
<P>None.</P>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlFindElement">mxmlFindElement()</A></H3>
<H4>Description</H4>
<P>Find the named element.</P>
<P>The search is constrained by the name, attribute name, and value; any
NULL names or values are treated as wildcards, so different kinds of
searches can be implemented by looking for all elements of a given name
or all elements with a specific attribute. The descend argument
determines whether the search descends into child nodes; normally you
will use MXML_DESCEND_FIRST for the initial search and MXML_NO_DESCEND
to find additional direct descendents of the node. The top node
argument constrains the search to a particular node's children.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlFindElement( <A href="#mxml_node_t">mxml_node_t</A> * node, <A href="#mxml_node_t">
mxml_node_t</A> * top, const char * name, const char * attr, const char
* value, int descend);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Current node</TD></TR>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>name</TT></TD><TD>Element name or NULL for any</TD></TR>
<TR><TD><TT>attr</TT></TD><TD>Attribute name, or NULL for none</TD></TR>
<TR><TD><TT>value</TT></TD><TD>Attribute value, or NULL for any</TD></TR>
<TR><TD><TT>descend</TT></TD><TD>Descend into tree - MXML_DESCEND,
MXML_NO_DESCEND, or MXML_DESCEND_FIRST</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Element node or NULL</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlIndexDelete">mxmlIndexDelete()</A></H3>
<H4>Description</H4>
<P>Delete an index.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlIndexDelete( <A href="#mxml_index_t">mxml_index_t</A> * ind);</TT>
</P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>ind</TT></TD><TD>Index to delete</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlIndexEnum">mxmlIndexEnum()</A></H3>
<H4>Description</H4>
<P>Return the next node in the index.</P>
<P>Nodes are returned in the sorted order of the index.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlIndexEnum( <A href="#mxml_index_t">mxml_index_t</A> * ind);</TT>
</P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>ind</TT></TD><TD>Index to enumerate</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Next node or NULL if there is none</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlIndexFind">mxmlIndexFind()</A></H3>
<H4>Description</H4>
<P>Find the next matching node.</P>
<P>You should call mxmlIndexReset() prior to using this function for the
first time with a particular set of &quot;element&quot; and &quot;value&quot; strings.
Passing NULL for both &quot;element&quot; and &quot;value&quot; is equivalent to calling
mxmlIndexEnum().</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlIndexFind( <A href="#mxml_index_t">mxml_index_t</A> * ind,
const char * element, const char * value);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>ind</TT></TD><TD>Index to search</TD></TR>
<TR><TD><TT>element</TT></TD><TD>Element name to find, if any</TD></TR>
<TR><TD><TT>value</TT></TD><TD>Attribute value, if any</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Node or NULL if none found</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlIndexNew">mxmlIndexNew()</A></H3>
<H4>Description</H4>
<P>Create a new index.</P>
<P>The index will contain all nodes that contain the named element
and/or attribute. If both &quot;element&quot; and &quot;attr&quot; are NULL, then the index
will contain a sorted list of the elements in the node tree. Nodes are
sorted by element name and optionally by attribute value if the &quot;attr&quot;
argument is not NULL.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_index_t">mxml_index_t</A> *
<BR> mxmlIndexNew( <A href="#mxml_node_t">mxml_node_t</A> * node, const
char * element, const char * attr);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>XML node tree</TD></TR>
<TR><TD><TT>element</TT></TD><TD>Element to index or NULL for all</TD></TR>
<TR><TD><TT>attr</TT></TD><TD>Attribute to index or NULL for none</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New index</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlIndexReset">mxmlIndexReset()</A></H3>
<H4>Description</H4>
<P>Reset the enumeration/find pointer in the index and return the first
node in the index.</P>
<P>This function should be called prior to using mxmlIndexEnum() or
mxmlIndexFind() for the first time.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlIndexReset( <A href="#mxml_index_t">mxml_index_t</A> * ind);</TT>
</P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>ind</TT></TD><TD>Index to reset</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>First node or NULL if there is none</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlLoadFd">mxmlLoadFd()</A></H3>
<H4>Description</H4>
<P>Load a file descriptor into an XML node tree.</P>
<P>The nodes in the specified file are added to the specified top node.
If no top node is provided, the XML file MUST be well-formed with a
single parent node like &lt;?xml&gt; for the entire file. The callback
function returns the value type that should be used for child nodes. If
MXML_NO_CALLBACK is specified then all child nodes will be either
MXML_ELEMENT or MXML_TEXT nodes.</P>
<P>The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
child nodes of the specified type.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlLoadFd( <A href="#mxml_node_t">mxml_node_t</A> * top, int fd, <A
href="#mxml_load_cb_t">mxml_load_cb_t</A> cb);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>fd</TT></TD><TD>File descriptor to read from</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Callback function or MXML_NO_CALLBACK</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>First node or NULL if the file could not be read.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlLoadFile">mxmlLoadFile()</A></H3>
<H4>Description</H4>
<P>Load a file into an XML node tree.</P>
<P>The nodes in the specified file are added to the specified top node.
If no top node is provided, the XML file MUST be well-formed with a
single parent node like &lt;?xml&gt; for the entire file. The callback
function returns the value type that should be used for child nodes. If
MXML_NO_CALLBACK is specified then all child nodes will be either
MXML_ELEMENT or MXML_TEXT nodes.</P>
<P>The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
child nodes of the specified type.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlLoadFile( <A href="#mxml_node_t">mxml_node_t</A> * top, FILE *
fp, <A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>fp</TT></TD><TD>File to read from</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Callback function or MXML_NO_CALLBACK</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>First node or NULL if the file could not be read.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlLoadString">mxmlLoadString()</A></H3>
<H4>Description</H4>
<P>Load a string into an XML node tree.</P>
<P>The nodes in the specified string are added to the specified top
node. If no top node is provided, the XML string MUST be well-formed
with a single parent node like &lt;?xml&gt; for the entire string. The
callback function returns the value type that should be used for child
nodes. If MXML_NO_CALLBACK is specified then all child nodes will be
either MXML_ELEMENT or MXML_TEXT nodes.</P>
<P>The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
child nodes of the specified type.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlLoadString( <A href="#mxml_node_t">mxml_node_t</A> * top, const
char * s, <A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>s</TT></TD><TD>String to load</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Callback function or MXML_NO_CALLBACK</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>First node or NULL if the string has errors.</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_19">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlNewCDATA">mxmlNewCDATA()</A></A></H3>
<H4>Description</H4>
<P>Create a new CDATA node.</P>
<P>The new CDATA node is added to the end of the specified parent's
child list. The constant MXML_NO_PARENT can be used to specify that the
new CDATA node has no parent. The data string must be nul-terminated
and is copied into the new node. CDATA nodes use the MXML_ELEMENT type.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewCDATA( <A href="#mxml_node_t">mxml_node_t</A> * parent,
const char * data);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node or MXML_NO_PARENT</TD></TR>
<TR><TD><TT>data</TT></TD><TD>Data string</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New node</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_20">
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;<A name="mxmlNewCustom">mxmlNewCustom()</A></A></H3>
<H4>Description</H4>
<P>Create a new custom data node.</P>
<P>The new custom node is added to the end of the specified parent's
child list. The constant MXML_NO_PARENT can be used to specify that the
new element node has no parent. NULL can be passed when the data in the
node is not dynamically allocated or is separately managed.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewCustom( <A href="#mxml_node_t">mxml_node_t</A> * parent,
void * data, <A href="#mxml_custom_destroy_cb_t">
mxml_custom_destroy_cb_t</A> destroy);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node or MXML_NO_PARENT</TD></TR>
<TR><TD><TT>data</TT></TD><TD>Pointer to data</TD></TR>
<TR><TD><TT>destroy</TT></TD><TD>Function to destroy data</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New node</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlNewElement">mxmlNewElement()</A></H3>
<H4>Description</H4>
<P>Create a new element node.</P>
<P>The new element node is added to the end of the specified parent's
child list. The constant MXML_NO_PARENT can be used to specify that the
new element node has no parent.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewElement( <A href="#mxml_node_t">mxml_node_t</A> * parent,
const char * name);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node or MXML_NO_PARENT</TD></TR>
<TR><TD><TT>name</TT></TD><TD>Name of element</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New node</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlNewInteger">mxmlNewInteger()</A></H3>
<H4>Description</H4>
<P>Create a new integer node.</P>
<P>The new integer node is added to the end of the specified parent's
child list. The constant MXML_NO_PARENT can be used to specify that the
new integer node has no parent.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewInteger( <A href="#mxml_node_t">mxml_node_t</A> * parent,
int integer);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node or MXML_NO_PARENT</TD></TR>
<TR><TD><TT>integer</TT></TD><TD>Integer value</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New node</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlNewOpaque">mxmlNewOpaque()</A></H3>
<H4>Description</H4>
<P>Create a new opaque string.</P>
<P>The new opaque node is added to the end of the specified parent's
child list. The constant MXML_NO_PARENT can be used to specify that the
new opaque node has no parent. The opaque string must be nul-terminated
and is copied into the new node.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewOpaque( <A href="#mxml_node_t">mxml_node_t</A> * parent,
const char * opaque);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node or MXML_NO_PARENT</TD></TR>
<TR><TD><TT>opaque</TT></TD><TD>Opaque string</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New node</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlNewReal">mxmlNewReal()</A></H3>
<H4>Description</H4>
<P>Create a new real number node.</P>
<P>The new real number node is added to the end of the specified
parent's child list. The constant MXML_NO_PARENT can be used to specify
that the new real number node has no parent.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewReal( <A href="#mxml_node_t">mxml_node_t</A> * parent,
double real);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node or MXML_NO_PARENT</TD></TR>
<TR><TD><TT>real</TT></TD><TD>Real number value</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New node</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlNewText">mxmlNewText()</A></H3>
<H4>Description</H4>
<P>Create a new text fragment node.</P>
<P>The new text node is added to the end of the specified parent's child
list. The constant MXML_NO_PARENT can be used to specify that the new
text node has no parent. The whitespace parameter is used to specify
whether leading whitespace is present before the node. The text string
must be nul-terminated and is copied into the new node.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewText( <A href="#mxml_node_t">mxml_node_t</A> * parent, int
whitespace, const char * string);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node or MXML_NO_PARENT</TD></TR>
<TR><TD><TT>whitespace</TT></TD><TD>1 = leading whitespace, 0 = no
whitespace</TD></TR>
<TR><TD><TT>string</TT></TD><TD>String</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New node</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlNewTextf">mxmlNewTextf()</A></H3>
<H4>Description</H4>
<P>Create a new formatted text fragment node.</P>
<P>The new text node is added to the end of the specified parent's child
list. The constant MXML_NO_PARENT can be used to specify that the new
text node has no parent. The whitespace parameter is used to specify
whether leading whitespace is present before the node. The format
string must be nul-terminated and is formatted into the new node.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewTextf( <A href="#mxml_node_t">mxml_node_t</A> * parent, int
whitespace, const char * format, ...);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>parent</TT></TD><TD>Parent node or MXML_NO_PARENT</TD></TR>
<TR><TD><TT>whitespace</TT></TD><TD>1 = leading whitespace, 0 = no
whitespace</TD></TR>
<TR><TD><TT>format</TT></TD><TD>Printf-style frmat string</TD></TR>
<TR><TD><TT>...</TT></TD><TD>Additional args as needed</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New node</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_27">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlNewXML">mxmlNewXML()</A></A></H3>
<H4>Description</H4>
<P>Create a new XML document tree.</P>
<P>The &quot;version&quot; argument specifies the version number to put in the
?xml element node. If NULL, version 1.0 is assumed.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlNewXML( const char * version);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>version</TT></TD><TD>Version number to use</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New ?xml node</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_28">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlRelease">mxmlRelease()</A></A></H3>
<H4>Description</H4>
<P>Release a node.</P>
<P>When the reference count reaches zero, the node (and any children) is
deleted via mxmlDelete().</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlRelease( <A href="#mxml_node_t">mxml_node_t</A> * node);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New reference count</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlRemove">mxmlRemove()</A></H3>
<H4>Description</H4>
<P>Remove a node from its parent.</P>
<P>Does not free memory used by the node - use mxmlDelete() for that.
This function does nothing if the node has no parent.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlRemove( <A href="#mxml_node_t">mxml_node_t</A> * node);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to remove</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_30">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlRetain">mxmlRetain()</A></A></H3>
<H4>Description</H4>
<P>Retain a node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlRetain( <A href="#mxml_node_t">mxml_node_t</A> * node);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>New reference count</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_31">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSAXLoadFd">mxmlSAXLoadFd()</A></A></H3>
<H4>Description</H4>
<P>Load a file descriptor into an XML node tree using a SAX callback.</P>
<P>The nodes in the specified file are added to the specified top node.
If no top node is provided, the XML file MUST be well-formed with a
single parent node like &lt;?xml&gt; for the entire file. The callback
function returns the value type that should be used for child nodes. If
MXML_NO_CALLBACK is specified then all child nodes will be either
MXML_ELEMENT or MXML_TEXT nodes.</P>
<P>The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
child nodes of the specified type.</P>
<P>The SAX callback must call mxmlRetain() for any nodes that need to be
kept for later use. Otherwise, nodes are deleted when the parent node
is closed or after each data, comment, CDATA, or directive node.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlSAXLoadFd( <A href="#mxml_node_t">mxml_node_t</A> * top, int
fd, <A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb, <A href="#mxml_sax_cb_t">
mxml_sax_cb_t</A> sax_cb, void * sax_data);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>fd</TT></TD><TD>File descriptor to read from</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Callback function or MXML_NO_CALLBACK</TD></TR>
<TR><TD><TT>sax_cb</TT></TD><TD>SAX callback or MXML_NO_CALLBACK</TD></TR>
<TR><TD><TT>sax_data</TT></TD><TD>SAX user data</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>First node or NULL if the file could not be read.</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_32">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSAXLoadFile">mxmlSAXLoadFile()</A></A></H3>
<H4>Description</H4>
<P>Load a file into an XML node tree using a SAX callback.</P>
<P>The nodes in the specified file are added to the specified top node.
If no top node is provided, the XML file MUST be well-formed with a
single parent node like &lt;?xml&gt; for the entire file. The callback
function returns the value type that should be used for child nodes. If
MXML_NO_CALLBACK is specified then all child nodes will be either
MXML_ELEMENT or MXML_TEXT nodes.</P>
<P>The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
child nodes of the specified type.</P>
<P>The SAX callback must call mxmlRetain() for any nodes that need to be
kept for later use. Otherwise, nodes are deleted when the parent node
is closed or after each data, comment, CDATA, or directive node.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlSAXLoadFile( <A href="#mxml_node_t">mxml_node_t</A> * top, FILE
* fp, <A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb, <A href="#mxml_sax_cb_t">
mxml_sax_cb_t</A> sax_cb, void * sax_data);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>fp</TT></TD><TD>File to read from</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Callback function or MXML_NO_CALLBACK</TD></TR>
<TR><TD><TT>sax_cb</TT></TD><TD>SAX callback or MXML_NO_CALLBACK</TD></TR>
<TR><TD><TT>sax_data</TT></TD><TD>SAX user data</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>First node or NULL if the file could not be read.</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_33">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSAXLoadString">mxmlSAXLoadString()</A></A></H3>
<H4>Description</H4>
<P>Load a string into an XML node tree using a SAX callback.</P>
<P>The nodes in the specified string are added to the specified top
node. If no top node is provided, the XML string MUST be well-formed
with a single parent node like &lt;?xml&gt; for the entire string. The
callback function returns the value type that should be used for child
nodes. If MXML_NO_CALLBACK is specified then all child nodes will be
either MXML_ELEMENT or MXML_TEXT nodes.</P>
<P>The constants MXML_INTEGER_CALLBACK, MXML_OPAQUE_CALLBACK,
MXML_REAL_CALLBACK, and MXML_TEXT_CALLBACK are defined for loading
child nodes of the specified type.</P>
<P>The SAX callback must call mxmlRetain() for any nodes that need to be
kept for later use. Otherwise, nodes are deleted when the parent node
is closed or after each data, comment, CDATA, or directive node.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlSAXLoadString( <A href="#mxml_node_t">mxml_node_t</A> * top,
const char * s, <A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb, <A href="#mxml_sax_cb_t">
mxml_sax_cb_t</A> sax_cb, void * sax_data);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>s</TT></TD><TD>String to load</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Callback function or MXML_NO_CALLBACK</TD></TR>
<TR><TD><TT>sax_cb</TT></TD><TD>SAX callback or MXML_NO_CALLBACK</TD></TR>
<TR><TD><TT>sax_data</TT></TD><TD>SAX user data</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>First node or NULL if the string has errors.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSaveAllocString">mxmlSaveAllocString()</A>
</H3>
<H4>Description</H4>
<P>Save an XML node tree to an allocated string.</P>
<P>This function returns a pointer to a string containing the textual
representation of the XML node tree. The string should be freed using
the free() function when you are done with it. NULL is returned if the
node would produce an empty string or if the string cannot be
allocated.</P>
<P>The callback argument specifies a function that returns a whitespace
string or NULL before and after each element. If MXML_NO_CALLBACK is
specified, whitespace will only be added before MXML_TEXT nodes with
leading whitespace and before attribute names inside opening element
tags.</P>
<H4>Syntax</H4>
<P> <TT>char *
<BR> mxmlSaveAllocString( <A href="#mxml_node_t">mxml_node_t</A> * node,
<A href="#mxml_save_cb_t">mxml_save_cb_t</A> cb);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to write</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Whitespace callback or MXML_NO_CALLBACK</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Allocated string or NULL</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSaveFd">mxmlSaveFd()</A></H3>
<H4>Description</H4>
<P>Save an XML tree to a file descriptor.</P>
<P>The callback argument specifies a function that returns a whitespace
string or NULL before and after each element. If MXML_NO_CALLBACK is
specified, whitespace will only be added before MXML_TEXT nodes with
leading whitespace and before attribute names inside opening element
tags.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSaveFd( <A href="#mxml_node_t">mxml_node_t</A> * node, int fd, <A
href="#mxml_save_cb_t">mxml_save_cb_t</A> cb);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to write</TD></TR>
<TR><TD><TT>fd</TT></TD><TD>File descriptor to write to</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Whitespace callback or MXML_NO_CALLBACK</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on error.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSaveFile">mxmlSaveFile()</A></H3>
<H4>Description</H4>
<P>Save an XML tree to a file.</P>
<P>The callback argument specifies a function that returns a whitespace
string or NULL before and after each element. If MXML_NO_CALLBACK is
specified, whitespace will only be added before MXML_TEXT nodes with
leading whitespace and before attribute names inside opening element
tags.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSaveFile( <A href="#mxml_node_t">mxml_node_t</A> * node, FILE *
fp, <A href="#mxml_save_cb_t">mxml_save_cb_t</A> cb);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to write</TD></TR>
<TR><TD><TT>fp</TT></TD><TD>File to write to</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Whitespace callback or MXML_NO_CALLBACK</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on error.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSaveString">mxmlSaveString()</A></H3>
<H4>Description</H4>
<P>Save an XML node tree to a string.</P>
<P>This function returns the total number of bytes that would be
required for the string but only copies (bufsize - 1) characters into
the specified buffer.</P>
<P>The callback argument specifies a function that returns a whitespace
string or NULL before and after each element. If MXML_NO_CALLBACK is
specified, whitespace will only be added before MXML_TEXT nodes with
leading whitespace and before attribute names inside opening element
tags.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSaveString( <A href="#mxml_node_t">mxml_node_t</A> * node, char
* buffer, int bufsize, <A href="#mxml_save_cb_t">mxml_save_cb_t</A>
cb);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to write</TD></TR>
<TR><TD><TT>buffer</TT></TD><TD>String buffer</TD></TR>
<TR><TD><TT>bufsize</TT></TD><TD>Size of string buffer</TD></TR>
<TR><TD><TT>cb</TT></TD><TD>Whitespace callback or MXML_NO_CALLBACK</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Size of string</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_38">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSetCDATA">mxmlSetCDATA()</A></A></H3>
<H4>Description</H4>
<P>Set the element name of a CDATA node.</P>
<P>The node is not changed if it is not a CDATA element node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSetCDATA( <A href="#mxml_node_t">mxml_node_t</A> * node, const
char * data);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to set</TD></TR>
<TR><TD><TT>data</TT></TD><TD>New data string</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_39">
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;<A name="mxmlSetCustom">mxmlSetCustom()</A></A></H3>
<H4>Description</H4>
<P>Set the data and destructor of a custom data node.</P>
<P>The node is not changed if it is not a custom node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSetCustom( <A href="#mxml_node_t">mxml_node_t</A> * node, void
* data, <A href="#mxml_custom_destroy_cb_t">mxml_custom_destroy_cb_t</A>
destroy);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to set</TD></TR>
<TR><TD><TT>data</TT></TD><TD>New data pointer</TD></TR>
<TR><TD><TT>destroy</TT></TD><TD>New destructor function</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSetCustomHandlers">
mxmlSetCustomHandlers()</A></H3>
<H4>Description</H4>
<P>Set the handling functions for custom data.</P>
<P>The load function accepts a node pointer and a data string and must
return 0 on success and non-zero on error.</P>
<P>The save function accepts a node pointer and must return a malloc'd
string on success and NULL on error.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlSetCustomHandlers( <A href="#mxml_custom_load_cb_t">
mxml_custom_load_cb_t</A> load, <A href="#mxml_custom_save_cb_t">
mxml_custom_save_cb_t</A> save);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>load</TT></TD><TD>Load function</TD></TR>
<TR><TD><TT>save</TT></TD><TD>Save function</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSetElement">mxmlSetElement()</A></H3>
<H4>Description</H4>
<P>Set the name of an element node.</P>
<P>The node is not changed if it is not an element node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSetElement( <A href="#mxml_node_t">mxml_node_t</A> * node,
const char * name);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to set</TD></TR>
<TR><TD><TT>name</TT></TD><TD>New name string</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSetErrorCallback">mxmlSetErrorCallback()</A>
</H3>
<H4>Description</H4>
<P>Set the error message callback.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlSetErrorCallback( <A href="#mxml_error_cb_t">mxml_error_cb_t</A>
cb);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>cb</TT></TD><TD>Error callback function</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSetInteger">mxmlSetInteger()</A></H3>
<H4>Description</H4>
<P>Set the value of an integer node.</P>
<P>The node is not changed if it is not an integer node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSetInteger( <A href="#mxml_node_t">mxml_node_t</A> * node, int
integer);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to set</TD></TR>
<TR><TD><TT>integer</TT></TD><TD>Integer value</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSetOpaque">mxmlSetOpaque()</A></H3>
<H4>Description</H4>
<P>Set the value of an opaque node.</P>
<P>The node is not changed if it is not an opaque node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSetOpaque( <A href="#mxml_node_t">mxml_node_t</A> * node, const
char * opaque);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to set</TD></TR>
<TR><TD><TT>opaque</TT></TD><TD>Opaque string</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSetReal">mxmlSetReal()</A></H3>
<H4>Description</H4>
<P>Set the value of a real number node.</P>
<P>The node is not changed if it is not a real number node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSetReal( <A href="#mxml_node_t">mxml_node_t</A> * node, double
real);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to set</TD></TR>
<TR><TD><TT>real</TT></TD><TD>Real number value</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSetText">mxmlSetText()</A></H3>
<H4>Description</H4>
<P>Set the value of a text node.</P>
<P>The node is not changed if it is not a text node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSetText( <A href="#mxml_node_t">mxml_node_t</A> * node, int
whitespace, const char * string);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to set</TD></TR>
<TR><TD><TT>whitespace</TT></TD><TD>1 = leading whitespace, 0 = no
whitespace</TD></TR>
<TR><TD><TT>string</TT></TD><TD>String</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlSetTextf">mxmlSetTextf()</A></H3>
<H4>Description</H4>
<P>Set the value of a text node to a formatted string.</P>
<P>The node is not changed if it is not a text node.</P>
<H4>Syntax</H4>
<P> <TT>int
<BR> mxmlSetTextf( <A href="#mxml_node_t">mxml_node_t</A> * node, int
whitespace, const char * format, ...);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Node to set</TD></TR>
<TR><TD><TT>whitespace</TT></TD><TD>1 = leading whitespace, 0 = no
whitespace</TD></TR>
<TR><TD><TT>format</TT></TD><TD>Printf-style format string</TD></TR>
<TR><TD><TT>...</TT></TD><TD>Additional arguments as needed</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>0 on success, -1 on failure</P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_3_48">
<!--span class='info'-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSetWrapMargin">mxmlSetWrapMargin()</A></A></H3>
<H4>Description</H4>
<P>Set the the wrap margin when saving XML data.</P>
<P>Wrapping is disabled when &quot;column&quot; is &lt;= 0.</P>
<H4>Syntax</H4>
<P> <TT>void
<BR> mxmlSetWrapMargin( int column);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>column</TT></TD><TD>Column for wrapping</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Nothing.</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlWalkNext">mxmlWalkNext()</A></H3>
<H4>Description</H4>
<P>Walk to the next logical node in the tree.</P>
<P>The descend argument controls whether the first child is considered
to be the next node. The top node argument constrains the walk to the
node's children.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlWalkNext( <A href="#mxml_node_t">mxml_node_t</A> * node, <A href="#mxml_node_t">
mxml_node_t</A> * top, int descend);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Current node</TD></TR>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>descend</TT></TD><TD>Descend into tree - MXML_DESCEND,
MXML_NO_DESCEND, or MXML_DESCEND_FIRST</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Next node or NULL</P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxmlWalkPrev">mxmlWalkPrev()</A></H3>
<H4>Description</H4>
<P>Walk to the previous logical node in the tree.</P>
<P>The descend argument controls whether the previous node's last child
is considered to be the previous node. The top node argument constrains
the walk to the node's children.</P>
<H4>Syntax</H4>
<P> <TT><A href="#mxml_node_t">mxml_node_t</A> *
<BR> mxmlWalkPrev( <A href="#mxml_node_t">mxml_node_t</A> * node, <A href="#mxml_node_t">
mxml_node_t</A> * top, int descend);</TT></P>
<H4>Arguments</H4>
<DIV class="table">
<TABLE align="center" border="1" cellpadding="5" cellspacing="0" summary="Arguments"
width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>node</TT></TD><TD>Current node</TD></TR>
<TR><TD><TT>top</TT></TD><TD>Top node</TD></TR>
<TR><TD><TT>descend</TT></TD><TD>Descend into tree - MXML_DESCEND,
MXML_NO_DESCEND, or MXML_DESCEND_FIRST</TD></TR>
</TABLE>
</DIV>
<H4>Returns</H4>
<P>Previous node or NULL</P>
<!-- NEW PAGE -->
<H2 class="title"><A name="STRUCTURES">Structures</A></H2>
<UL>
<LI><A href="#mxml_attr_s"><TT>mxml_attr_s</TT></A></LI>
<LI><A href="#mxml_custom_s"><TT>mxml_custom_s</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;</LI>
<LI><A href="#mxml_element_s"><TT>mxml_element_s</TT></A></LI>
<LI><A href="#mxml_index_s"><TT>mxml_index_s</TT></A></LI>
<LI><A href="#mxml_node_s"><TT>mxml_node_s</TT></A></LI>
<LI><A href="#mxml_text_s"><TT>mxml_text_s</TT></A></LI>
</UL>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_attr_s">mxml_attr_s</A></H3>
<H4>Description</H4>
<P>Data types...</P>
<H4>Definition</H4>
<P> <TT>struct mxml_attr_s
<BR> {
<BR> &nbsp;&nbsp;char * name;
<BR> &nbsp;&nbsp;char * value;
<BR> };</TT></P>
<H4>Members</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Members" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>name</TT></TD><TD>Attribute name</TD></TR>
<TR><TD><TT>value</TT></TD><TD>Attribute value</TD></TR>
</TABLE>
</DIV>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_4_2">
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;<A name="mxml_custom_s">mxml_custom_s</A></A></H3>
<H4>Description</H4>
<P>An XML custom value.</P>
<H4>Definition</H4>
<P> <TT>struct mxml_custom_s
<BR> {
<BR> &nbsp;&nbsp;void * data;
<BR> &nbsp;&nbsp;<A href="#mxml_custom_destroy_cb_t">mxml_custom_destroy_cb_t</A>
destroy;
<BR> };</TT></P>
<H4>Members</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Members" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>data</TT></TD><TD>Pointer to (allocated) custom data</TD></TR>
<TR><TD><TT>destroy</TT></TD><TD>Pointer to destructor function</TD></TR>
</TABLE>
</DIV>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_element_s">mxml_element_s</A></H3>
<H4>Description</H4>
<P>An XML element value.</P>
<H4>Definition</H4>
<P> <TT>struct mxml_element_s
<BR> {
<BR> &nbsp;&nbsp;<A href="#mxml_attr_t">mxml_attr_t</A> * attrs;
<BR> &nbsp;&nbsp;char * name;
<BR> &nbsp;&nbsp;int num_attrs;
<BR> };</TT></P>
<H4>Members</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Members" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>attrs</TT></TD><TD>Attributes</TD></TR>
<TR><TD><TT>name</TT></TD><TD>Name of element</TD></TR>
<TR><TD><TT>num_attrs</TT></TD><TD>Number of attributes</TD></TR>
</TABLE>
</DIV>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_index_s">mxml_index_s</A></H3>
<H4>Description</H4>
<P>An XML node index.</P>
<H4>Definition</H4>
<P> <TT>struct mxml_index_s
<BR> {
<BR> &nbsp;&nbsp;int alloc_nodes;
<BR> &nbsp;&nbsp;char * attr;
<BR> &nbsp;&nbsp;int cur_node;
<BR> &nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> ** nodes;
<BR> &nbsp;&nbsp;int num_nodes;
<BR> };</TT></P>
<H4>Members</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Members" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>alloc_nodes</TT></TD><TD>Allocated nodes in index</TD></TR>
<TR><TD><TT>attr</TT></TD><TD>Attribute used for indexing or NULL</TD></TR>
<TR><TD><TT>cur_node</TT></TD><TD>Current node</TD></TR>
<TR><TD><TT>nodes</TT></TD><TD>Node array</TD></TR>
<TR><TD><TT>num_nodes</TT></TD><TD>Number of nodes in index</TD></TR>
</TABLE>
</DIV>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_node_s">mxml_node_s</A></H3>
<H4>Description</H4>
<P>An XML node.</P>
<H4>Definition</H4>
<P> <TT>struct mxml_node_s
<BR> {
<BR> &nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> * child;
<BR> &nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> * last_child;
<BR> &nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> * next;
<BR> &nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> * parent;
<BR> &nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> * prev;
<BR> &nbsp;&nbsp;int ref_count;
<BR> &nbsp;&nbsp;mxml_type_t type;
<BR> &nbsp;&nbsp;void * user_data;
<BR> &nbsp;&nbsp;<A href="#mxml_value_t">mxml_value_t</A> value;
<BR> };</TT></P>
<H4>Members</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Members" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>child</TT></TD><TD>First child node</TD></TR>
<TR><TD><TT>last_child</TT></TD><TD>Last child node</TD></TR>
<TR><TD><TT>next</TT></TD><TD>Next node under same parent</TD></TR>
<TR><TD><TT>parent</TT></TD><TD>Parent node</TD></TR>
<TR><TD><TT>prev</TT></TD><TD>Previous node under same parent</TD></TR>
<TR><TD><TT>ref_count</TT></TD><TD>Use count</TD></TR>
<TR><TD><TT>type</TT></TD><TD>Node type</TD></TR>
<TR><TD><TT>user_data</TT></TD><TD>User data</TD></TR>
<TR><TD><TT>value</TT></TD><TD>Node value</TD></TR>
</TABLE>
</DIV>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_text_s">mxml_text_s</A></H3>
<H4>Description</H4>
<P>An XML text value.</P>
<H4>Definition</H4>
<P> <TT>struct mxml_text_s
<BR> {
<BR> &nbsp;&nbsp;char * string;
<BR> &nbsp;&nbsp;int whitespace;
<BR> };</TT></P>
<H4>Members</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Members" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>string</TT></TD><TD>Fragment string</TD></TR>
<TR><TD><TT>whitespace</TT></TD><TD>Leading whitespace?</TD></TR>
</TABLE>
</DIV>
<!-- NEW PAGE -->
<H2 class="title"><A name="TYPES">Types</A></H2>
<UL>
<LI><A href="#mxml_attr_t"><TT>mxml_attr_t</TT></A></LI>
<LI><A href="#mxml_custom_destroy_cb_t"><TT>mxml_custom_destroy_cb_t</TT>
</A></LI>
<LI><A href="#mxml_custom_load_cb_t"><TT>mxml_custom_load_cb_t</TT></A></LI>
<LI><A href="#mxml_custom_save_cb_t"><TT>mxml_custom_save_cb_t</TT></A></LI>
<LI><A href="#mxml_custom_t"><TT>mxml_custom_t</TT></A>
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;</LI>
<LI><A href="#mxml_element_t"><TT>mxml_element_t</TT></A></LI>
<LI><A href="#mxml_error_cb_t"><TT>mxml_error_cb_t</TT></A></LI>
<LI><A href="#mxml_index_t"><TT>mxml_index_t</TT></A></LI>
<LI><A href="#mxml_load_cb_t"><TT>mxml_load_cb_t</TT></A></LI>
<LI><A href="#mxml_node_t"><TT>mxml_node_t</TT></A></LI>
<LI><A href="#mxml_save_cb_t"><TT>mxml_save_cb_t</TT></A></LI>
<LI><A href="#mxml_sax_cb_t"><TT>mxml_sax_cb_t</TT></A></LI>
<LI><A href="#mxml_sax_event_t"><TT>mxml_sax_event_t</TT></A></LI>
<LI><A href="#mxml_text_t"><TT>mxml_text_t</TT></A></LI>
<LI><A href="#mxml_value_t"><TT>mxml_value_t</TT></A></LI>
</UL>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_attr_t">mxml_attr_t</A></H3>
<H4>Description</H4>
<P>Data types...</P>
<H4>Definition</H4>
<P> <TT>typedef struct <A href="#mxml_attr_s">mxml_attr_s</A>
mxml_attr_t;</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_custom_destroy_cb_t">
mxml_custom_destroy_cb_t</A></H3>
<H4>Description</H4>
<P>Custom data destructor</P>
<H4>Definition</H4>
<P> <TT>typedef void (*mxml_custom_destroy_cb_t)(void *);</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_custom_load_cb_t">mxml_custom_load_cb_t</A>
</H3>
<H4>Description</H4>
<P>Custom data load callback function</P>
<H4>Definition</H4>
<P> <TT>typedef int (*mxml_custom_load_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *, const char *);</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_custom_save_cb_t">mxml_custom_save_cb_t</A>
</H3>
<H4>Description</H4>
<P>Custom data save callback function</P>
<H4>Definition</H4>
<P> <TT>typedef char * (*mxml_custom_save_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *);</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A NAME="8_5_5">
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;<A name="mxml_custom_t">mxml_custom_t</A></A></H3>
<H4>Description</H4>
<P>An XML custom value.</P>
<H4>Definition</H4>
<P> <TT>typedef struct <A href="#mxml_custom_s">mxml_custom_s</A>
mxml_custom_t;</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_element_t">mxml_element_t</A></H3>
<H4>Description</H4>
<P>An XML element value.</P>
<H4>Definition</H4>
<P> <TT>typedef struct <A href="#mxml_element_s">mxml_element_s</A>
mxml_element_t;</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_error_cb_t">mxml_error_cb_t</A></H3>
<H4>Description</H4>
<P>Error callback function</P>
<H4>Definition</H4>
<P> <TT>typedef void (*mxml_error_cb_t)(const char *);</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_index_t">mxml_index_t</A></H3>
<H4>Description</H4>
<P>An XML node index.</P>
<H4>Definition</H4>
<P> <TT>typedef struct <A href="#mxml_index_s">mxml_index_s</A>
mxml_index_t;</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_load_cb_t">mxml_load_cb_t</A></H3>
<H4>Description</H4>
<P>Load callback function</P>
<H4>Definition</H4>
<P> <TT>typedef mxml_type_t (*mxml_load_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *);</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_node_t">mxml_node_t</A></H3>
<H4>Description</H4>
<P>An XML node.</P>
<H4>Definition</H4>
<P> <TT>typedef struct <A href="#mxml_node_s">mxml_node_s</A>
mxml_node_t;</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_save_cb_t">mxml_save_cb_t</A></H3>
<H4>Description</H4>
<P>Save callback function</P>
<H4>Definition</H4>
<P> <TT>typedef const char * (*mxml_save_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *, int);</TT></P>
<!-- NEW PAGE -->
<H3 class="title"><A name="mxml_sax_cb_t">mxml_sax_cb_t</A></H3>
<H4>Description</H4>
<P>SAX callback function</P>
<H4>Definition</H4>
<P> <TT>typedef void (*mxml_sax_cb_t)(<A href="#mxml_node_t">mxml_node_t</A>
*, mxml_sax_event_t, void *);</TT></P>
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<H3 class="title"><A name="mxml_sax_event_t">mxml_sax_event_t</A></H3>
<H4>Description</H4>
<P>SAX event type.</P>
<H4>Definition</H4>
<P> <TT>typedef enum <A href="#mxml_sax_event_e">mxml_sax_event_e</A>
mxml_sax_event_t;</TT></P>
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<H3 class="title"><A name="mxml_text_t">mxml_text_t</A></H3>
<H4>Description</H4>
<P>An XML text value.</P>
<H4>Definition</H4>
<P> <TT>typedef struct <A href="#mxml_text_s">mxml_text_s</A>
mxml_text_t;</TT></P>
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<H3 class="title"><A name="mxml_value_t">mxml_value_t</A></H3>
<H4>Description</H4>
<P>An XML node value.</P>
<H4>Definition</H4>
<P> <TT>typedef union <A href="#mxml_value_u">mxml_value_u</A>
mxml_value_t;</TT></P>
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<H2 class="title"><A name="UNIONS">Unions</A></H2>
<UL>
<LI><A href="#mxml_value_u"><TT>mxml_value_u</TT></A></LI>
</UL>
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<H3 class="title"><A name="mxml_value_u">mxml_value_u</A></H3>
<H4>Description</H4>
<P>An XML node value.</P>
<H4>Definition</H4>
<P> <TT>union mxml_value_u
<BR> {
<BR> &nbsp;&nbsp;<A href="#mxml_custom_t">mxml_custom_t</A> custom;
<BR> &nbsp;&nbsp;<A href="#mxml_element_t">mxml_element_t</A> element;
<BR> &nbsp;&nbsp;int integer;
<BR> &nbsp;&nbsp;char * opaque;
<BR> &nbsp;&nbsp;double real;
<BR> &nbsp;&nbsp;<A href="#mxml_text_t">mxml_text_t</A> text;
<BR> };</TT></P>
<H4>Members</H4>
<DIV class="table">
<TABLE align="center" border="1" summary="Members" width="80%"><THEAD></THEAD>
<TR><TH>Name</TH><TH>Description</TH></TR>
<TBODY></TBODY>
<TR><TD><TT>custom</TT>
<!--span class='info'-->
&nbsp;Mini-XML 2.1&nbsp;</TD><TD>Custom data</TD></TR>
<TR><TD><TT>element</TT></TD><TD>Element</TD></TR>
<TR><TD><TT>integer</TT></TD><TD>Integer number</TD></TR>
<TR><TD><TT>opaque</TT></TD><TD>Opaque string</TD></TR>
<TR><TD><TT>real</TT></TD><TD>Real number</TD></TR>
<TR><TD><TT>text</TT></TD><TD>Text fragment</TD></TR>
</TABLE>
</DIV></BODY>
</HTML>
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