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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 2.5</TITLE>
<META NAME="author" CONTENT="Michael R. Sweet">
<META NAME="copyright" CONTENT="Copyright 2003-2008">
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; CHARSET=iso-iso-8859-1">
<STYLE TYPE="text/css"><!--
BODY { font-family: sans-serif }
H1 { font-family: sans-serif }
H2 { font-family: sans-serif }
H3 { font-family: sans-serif }
H4 { font-family: sans-serif }
H5 { font-family: sans-serif }
H6 { font-family: sans-serif }
SUB { font-size: smaller }
SUP { font-size: smaller }
PRE { font-family: monospace }
A { text-decoration: none }
--></STYLE>
</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">Titles, Sections, and Introductions</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="#FUNCTIONS">Functions</A>
<UL>
<LI><A HREF="#mxmlAdd">mxmlAdd</A></LI>
<LI><A HREF="#mxmlDelete">mxmlDelete</A></LI>
<LI><A HREF="#8_2_3">mxmlElementDeleteAttr</A></LI>
<LI><A HREF="#mxmlElementGetAttr">mxmlElementGetAttr</A></LI>
<LI><A HREF="#mxmlElementSetAttr">mxmlElementSetAttr</A></LI>
<LI><A HREF="#8_2_6">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_2_20">mxmlNewCDATA</A></LI>
<LI><A HREF="#8_2_21">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_2_28">mxmlNewXML</A></LI>
<LI><A HREF="#8_2_29">mxmlRelease</A></LI>
<LI><A HREF="#mxmlRemove">mxmlRemove</A></LI>
<LI><A HREF="#8_2_31">mxmlRetain</A></LI>
<LI><A HREF="#8_2_32">mxmlSAXLoadFd</A></LI>
<LI><A HREF="#8_2_33">mxmlSAXLoadFile</A></LI>
<LI><A HREF="#8_2_34">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_2_39">mxmlSetCDATA</A></LI>
<LI><A HREF="#8_2_40">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_2_49">mxmlSetWrapMargin</A></LI>
<LI><A HREF="#mxmlWalkNext">mxmlWalkNext</A></LI>
<LI><A HREF="#mxmlWalkPrev">mxmlWalkPrev</A></LI>
</UL>
</LI>
<LI><A HREF="#TYPES">Data 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_3_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="#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="#UNIONS">Unions</A>
<UL>
<LI><A HREF="#mxml_value_u">mxml_value_u</A></LI>
</UL>
</LI>
<LI><A HREF="#ENUMERATIONS">Constants</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>
</UL>
<B><A HREF="#SCHEMA">XML Schema</A></B>
<UL></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 2.5, 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://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>
<LI>Appendix D, &quot;<A href="#SCHEMA">XML Schema</A>&quot;, shows the XML schema
used for the XML files produced 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 2003-2008 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>
<P>This chapter describes how to use <TT>mxmldoc(1)</TT> program to
automatically generate documentation from C and C++ source files.</P>
<H2><A NAME="5_1">The Basics</A></H2>
<P>Originally developed to generate the Mini-XML and CUPS API
documentation, <TT>mxmldoc</TT> is now a general-purpose utility which
scans C and C++ source files to produce HTML and man page documentation
along with an XML file representing the functions, types, and
definitions in those source files. Unlike popular documentation
generators like Doxygen or Javadoc, <TT>mxmldoc</TT> uses in-line
comments rather than comment headers, allowing for more &quot;natural&quot; code
documentation.</P>
<P>By default, <TT>mxmldoc</TT> produces HTML documentation. For
example, the following command will scan all of the C source and header
files in the current directory and produce a HTML documentation file
called<VAR> filename.html</VAR>:</P>
<PRE>
<KBD>mxmldoc *.h *.c &gt;filename.html ENTER</KBD>
</PRE>
<P>You can also specify an XML file to create which contains all of the
information from the source files. For example, the following command
creates an XML file called<VAR> filename.xml</VAR> in addition to the
HTML file:</P>
<PRE>
<KBD>mxmldoc filename.xml *.h *.c &gt;filename.html ENTER</KBD>
</PRE>
<P>The <TT>--no-output</TT> option disables the normal HTML output:</P>
<PRE>
<KBD>mxmldoc --no-output filename.xml *.h *.c ENTER</KBD>
</PRE>
<P>You can then run <TT>mxmldoc</TT> again with the XML file alone to
generate the HTML documentation:</P>
<PRE>
<KBD>mxmldoc filename.xml &gt;filename.html ENTER</KBD>
</PRE>
<P>The <TT>--man filename</TT> option tells <TT>mxmldoc</TT> to create a
man page instead of HTML documentation, for example:</P>
<PRE>
<KBD>mxmldoc --man filename filename.xml \
&gt;filename.man ENTER</KBD>
<KBD>mxmldoc --man filename *.h *.c \
&gt;filename.man ENTER</KBD>
<KBD>mxmldoc --man filename filename.xml *.h *.c \
&gt;filename.man ENTER</KBD>
</PRE>
<H2><A NAME="5_2">Commenting Your Code</A></H2>
<P>As noted previously, <TT>mxmldoc</TT> looks for in-line comments to
describe the functions, types, and constants in your code. <TT>Mxmldoc</TT>
will document all public names it finds in your source files - any
names starting with the underscore character (_) or names that are
documented with the <A HREF="#ATDIRECTIVES">@private@</A> directive are
treated as private and are undocumented.</P>
<P>Comments appearing directly before a function or type definition are
used to document that function or type. Comments appearing after
argument, definition, return type, or variable declarations are used to
document that argument, definition, return type, or variable. For
example, the following code excerpt defines a key/value structure and a
function that creates a new instance of that structure:</P>
<PRE>
/* A key/value pair. This is used with the
dictionary structure. */
struct keyval
{
char *key; /* Key string */
char *val; /* Value string */
};
/* Create a new key/value pair. */
struct keyval * /* New key/value pair */
new_keyval(
const char *key, /* Key string */
const char *val) /* Value string */
{
...
}
</PRE>
<P><TT>Mxmldoc</TT> also knows to remove extra asterisks (*) from the
comment string, so the comment string:</P>
<PRE>
/*
* Compute the value of PI.
*
* The function connects to an Internet server
* that streams audio of mathematical monks
* chanting the first 100 digits of PI.
*/
</PRE>
<P>will be shown as:</P>
<PRE>
Compute the value of PI.
The function connects to an Internet server
that streams audio of mathematical monks
chanting the first 100 digits of PI.
</PRE>
<P><A name="ATDIRECTIVES">Comments</A> can also include the following
special <TT>@name ...@</TT> directive strings:</P>
<UL>
<LI><TT>@deprecated@</TT> - flags the item as deprecated to discourage
its use</LI>
<LI><TT>@private@</TT> - flags the item as private so it will not be
included in the documentation</LI>
<LI><TT>@since ...@</TT> - flags the item as new since a particular
release. The text following the <TT>@since</TT> up to the closing <TT>@</TT>
is highlighted in the generated documentation, e.g. <TT>@since CUPS
1.3@</TT>.</LI>
</UL>
<!-- NEED 10 -->
<H2><A NAME="5_3">Titles, Sections, and Introductions</A></H2>
<P><TT>Mxmldoc</TT> also provides options to set the title, section, and
introduction text for the generated documentation. The <TT>--title text</TT>
option specifies the title for the documentation. The title string is
usually put in quotes:</P>
<PRE>
<KBD>mxmldoc filename.xml \
--title &quot;My Famous Documentation&quot; \
&gt;filename.html ENTER</KBD>
</PRE>
<P>The <TT>--section name</TT> option specifies the section for the
documentation. For HTML documentation, the name is placed in a HTML
comment such as:</P>
<PRE>
&lt;!-- SECTION: name --&gt;
</PRE>
<P>For man pages, the section name is usually just a number (&quot;3&quot;), or a
number followed by a vendor name (&quot;3acme&quot;). The section name is used in
the <TT>.TH</TT> directive in the man page:</P>
<PRE>
.TH mylibrary 3acme &quot;My Title&quot; ...
</PRE>
<P>The default section name for man page output is &quot;3&quot;. There is no
default section name for HTML output.</P>
<P>Finally, the <TT>--intro filename</TT> option specifies a file to
embed after the title and section but before the generated
documentation. For HTML documentation, the file must consist of valid
HTML without the usual <TT>DOCTYPE</TT>, <TT>html</TT>, and <TT>body</TT>
elements. For man page documentation, the file must consist of valid <TT>
nroff(1)</TT> text.</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
numbered 2 because it goes with version 2 of the ordinary GPL.]</P>
<P><B>Preamble</B></P>
<P>The licenses for most software are designed to take away your freedom
to share and change it. By contrast, the GNU General Public Licenses
are intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users.</P>
<P>This license, the Library General Public License, applies to some
specially designated Free Software Foundation software, and to any
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<P>When we speak of free software, we are referring to freedom, not
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<UL>
<P>Yoyodyne, Inc., hereby disclaims all copyright interest in the
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</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 2.5</A></H2>
<UL>
<LI>The mxmldoc program now makes greater use of CSS and supports a
--css option to embed an alternate stylesheet.</LI>
<LI>The mxmldoc program now supports --header and --footer options to
insert documentation content before and after the generated content.</LI>
<LI>The mxmldoc program now supports a --framed option to generate
framed HTML output.</LI>
<LI>The mxmldoc program now creates a table of contents including any
headings in the --intro file when generating HTML output.</LI>
<LI>The man pages and man page output from mxmldoc did not use &quot;\-&quot; for
dashes (STR #68)</LI>
<LI>The debug version of the Mini-XML DLL could not be built (STR #65)</LI>
<LI>Processing instructions and directives did not work when not at the
top level of a document (STR #67)</LI>
<LI>Spaces around the &quot;=&quot; in attributes were not supported (STR #67)</LI>
</UL>
<H2><A NAME="7_2">Changes in Mini-XML 2.4</A></H2>
<UL>
<LI>Fixed shared library build problems on HP-UX and Mac OS X.</LI>
<LI>The mxmldoc program did not output argument descriptions for
functions properly.</LI>
<LI>All global settings (custom, error, and entity callbacks and the
wrap margin) are now managed separately for each thread.</LI>
<LI>Added mxmlElementDeleteAttr() function (STR #59)</LI>
<LI>mxmlElementSetAttrf() did not work (STR #57)</LI>
<LI>mxmlLoad*() incorrectly treated declarations as parent elements (STR
#56)</LI>
<LI>mxmlLoad*() incorrectly allowed attributes without values (STR #47)</LI>
<LI>Fixed Visual C++ build problems (STR #49)</LI>
<LI>mxmlLoad*() did not return NULL when an element contained an error
(STR #46)</LI>
<LI>Added support for the apos character entity (STR #54)</LI>
<LI>Fixed whitespace detection with Unicode characters (STR #48)</LI>
<LI>mxmlWalkNext() and mxmlWalkPrev() did not work correctly when called
with a node with no children as the top node (STR #53)</LI>
</UL>
<H2><A NAME="7_3">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_4">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_5">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_6">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_7">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_8">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_9">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_10">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_11">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_12">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_13">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_14">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_15">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_16">Changes in Mini-XML 0.92</A></H2>
<UL>
<LI>mxmlSaveFile() didn't return a value on success.</LI>
</UL>
<H2><A NAME="7_17">Changes in Mini-XML 0.91</A></H2>
<UL>
<LI>mxmlWalkNext() would go into an infinite loop.</LI>
</UL>
<H2><A NAME="7_18">Changes in Mini-XML 0.9</A></H2>
<UL>
<LI>Initial public release.</LI>
</UL>
<HR NOSHADE>
<DIV class="body">
<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 class="contents">
<LI><A href="#FUNCTIONS">Functions</A>
<UL class="code">
<LI><A href="#mxmlAdd" title="Add a node to a tree.">mxmlAdd</A></LI>
<LI><A href="#mxmlDelete" title="Delete a node and all of its children.">
mxmlDelete</A></LI>
<LI><A href="#mxmlElementDeleteAttr" title="Delete an attribute.">
mxmlElementDeleteAttr</A></LI>
<LI><A href="#mxmlElementGetAttr" title="Get an attribute.">
mxmlElementGetAttr</A></LI>
<LI><A href="#mxmlElementSetAttr" title="Set an attribute.">
mxmlElementSetAttr</A></LI>
<LI><A href="#mxmlElementSetAttrf" title="Set an attribute with a formatted value.">
mxmlElementSetAttrf</A></LI>
<LI><A href="#mxmlEntityAddCallback" title="Add a callback to convert entities to Unicode.">
mxmlEntityAddCallback</A></LI>
<LI><A href="#mxmlEntityGetName" title="Get the name that corresponds to the character value.">
mxmlEntityGetName</A></LI>
<LI><A href="#mxmlEntityGetValue" title="Get the character corresponding to a named entity.">
mxmlEntityGetValue</A></LI>
<LI><A href="#mxmlEntityRemoveCallback" title="Remove a callback.">
mxmlEntityRemoveCallback</A></LI>
<LI><A href="#mxmlFindElement" title="Find the named element.">
mxmlFindElement</A></LI>
<LI><A href="#mxmlIndexDelete" title="Delete an index.">mxmlIndexDelete</A>
</LI>
<LI><A href="#mxmlIndexEnum" title="Return the next node in the index.">
mxmlIndexEnum</A></LI>
<LI><A href="#mxmlIndexFind" title="Find the next matching node.">
mxmlIndexFind</A></LI>
<LI><A href="#mxmlIndexNew" title="Create a new index.">mxmlIndexNew</A></LI>
<LI><A href="#mxmlIndexReset" title="Reset the enumeration/find pointer in the index and return the first node in the index.">
mxmlIndexReset</A></LI>
<LI><A href="#mxmlLoadFd" title="Load a file descriptor into an XML node tree.">
mxmlLoadFd</A></LI>
<LI><A href="#mxmlLoadFile" title="Load a file into an XML node tree.">
mxmlLoadFile</A></LI>
<LI><A href="#mxmlLoadString" title="Load a string into an XML node tree.">
mxmlLoadString</A></LI>
<LI><A href="#mxmlNewCDATA" title="Create a new CDATA node.">
mxmlNewCDATA</A></LI>
<LI><A href="#mxmlNewCustom" title="Create a new custom data node.">
mxmlNewCustom</A></LI>
<LI><A href="#mxmlNewElement" title="Create a new element node.">
mxmlNewElement</A></LI>
<LI><A href="#mxmlNewInteger" title="Create a new integer node.">
mxmlNewInteger</A></LI>
<LI><A href="#mxmlNewOpaque" title="Create a new opaque string.">
mxmlNewOpaque</A></LI>
<LI><A href="#mxmlNewReal" title="Create a new real number node.">
mxmlNewReal</A></LI>
<LI><A href="#mxmlNewText" title="Create a new text fragment node.">
mxmlNewText</A></LI>
<LI><A href="#mxmlNewTextf" title="Create a new formatted text fragment node.">
mxmlNewTextf</A></LI>
<LI><A href="#mxmlNewXML" title="Create a new XML document tree.">
mxmlNewXML</A></LI>
<LI><A href="#mxmlRelease" title="Release a node.">mxmlRelease</A></LI>
<LI><A href="#mxmlRemove" title="Remove a node from its parent.">
mxmlRemove</A></LI>
<LI><A href="#mxmlRetain" title="Retain a node.">mxmlRetain</A></LI>
<LI><A href="#mxmlSAXLoadFd" title="Load a file descriptor into an XML node tree using a SAX callback.">
mxmlSAXLoadFd</A></LI>
<LI><A href="#mxmlSAXLoadFile" title="Load a file into an XML node tree using a SAX callback.">
mxmlSAXLoadFile</A></LI>
<LI><A href="#mxmlSAXLoadString" title="Load a string into an XML node tree using a SAX callback.">
mxmlSAXLoadString</A></LI>
<LI><A href="#mxmlSaveAllocString" title="Save an XML node tree to an allocated string.">
mxmlSaveAllocString</A></LI>
<LI><A href="#mxmlSaveFd" title="Save an XML tree to a file descriptor.">
mxmlSaveFd</A></LI>
<LI><A href="#mxmlSaveFile" title="Save an XML tree to a file.">
mxmlSaveFile</A></LI>
<LI><A href="#mxmlSaveString" title="Save an XML node tree to a string.">
mxmlSaveString</A></LI>
<LI><A href="#mxmlSetCDATA" title="Set the element name of a CDATA node.">
mxmlSetCDATA</A></LI>
<LI><A href="#mxmlSetCustom" title="Set the data and destructor of a custom data node.">
mxmlSetCustom</A></LI>
<LI><A href="#mxmlSetCustomHandlers" title="Set the handling functions for custom data.">
mxmlSetCustomHandlers</A></LI>
<LI><A href="#mxmlSetElement" title="Set the name of an element node.">
mxmlSetElement</A></LI>
<LI><A href="#mxmlSetErrorCallback" title="Set the error message callback.">
mxmlSetErrorCallback</A></LI>
<LI><A href="#mxmlSetInteger" title="Set the value of an integer node.">
mxmlSetInteger</A></LI>
<LI><A href="#mxmlSetOpaque" title="Set the value of an opaque node.">
mxmlSetOpaque</A></LI>
<LI><A href="#mxmlSetReal" title="Set the value of a real number node.">
mxmlSetReal</A></LI>
<LI><A href="#mxmlSetText" title="Set the value of a text node.">
mxmlSetText</A></LI>
<LI><A href="#mxmlSetTextf" title="Set the value of a text node to a formatted string.">
mxmlSetTextf</A></LI>
<LI><A href="#mxmlSetWrapMargin" title="Set the the wrap margin when saving XML data.">
mxmlSetWrapMargin</A></LI>
<LI><A href="#mxmlWalkNext" title="Walk to the next logical node in the tree.">
mxmlWalkNext</A></LI>
<LI><A href="#mxmlWalkPrev" title="Walk to the previous logical node in the tree.">
mxmlWalkPrev</A></LI>
</UL>
</LI>
<LI><A href="#TYPES">Data Types</A>
<UL class="code">
<LI><A href="#mxml_attr_t" title="An XML element attribute value.">
mxml_attr_t</A></LI>
<LI><A href="#mxml_custom_destroy_cb_t" title="Custom data destructor">
mxml_custom_destroy_cb_t</A></LI>
<LI><A href="#mxml_custom_load_cb_t" title="Custom data load callback function">
mxml_custom_load_cb_t</A></LI>
<LI><A href="#mxml_custom_save_cb_t" title="Custom data save callback function">
mxml_custom_save_cb_t</A></LI>
<LI><A href="#mxml_custom_t" title="An XML custom value. ">mxml_custom_t</A>
</LI>
<LI><A href="#mxml_element_t" title="An XML element value.">
mxml_element_t</A></LI>
<LI><A href="#mxml_error_cb_t" title="Error callback function">
mxml_error_cb_t</A></LI>
<LI><A href="#mxml_index_t" title="An XML node index.">mxml_index_t</A></LI>
<LI><A href="#mxml_load_cb_t" title="Load callback function">
mxml_load_cb_t</A></LI>
<LI><A href="#mxml_node_t" title="An XML node.">mxml_node_t</A></LI>
<LI><A href="#mxml_save_cb_t" title="Save callback function">
mxml_save_cb_t</A></LI>
<LI><A href="#mxml_sax_cb_t" title="SAX callback function">mxml_sax_cb_t</A>
</LI>
<LI><A href="#mxml_sax_event_t" title="SAX event type.">mxml_sax_event_t</A>
</LI>
<LI><A href="#mxml_text_t" title="An XML text value.">mxml_text_t</A></LI>
<LI><A href="#mxml_value_t" title="An XML node value.">mxml_value_t</A></LI>
</UL>
</LI>
<LI><A href="#STRUCTURES">Structures</A>
<UL class="code">
<LI><A href="#mxml_attr_s" title="An XML element attribute value.">
mxml_attr_s</A></LI>
<LI><A href="#mxml_custom_s" title="An XML custom value. ">mxml_custom_s</A>
</LI>
<LI><A href="#mxml_element_s" title="An XML element value.">
mxml_element_s</A></LI>
<LI><A href="#mxml_index_s" title="An XML node index.">mxml_index_s</A></LI>
<LI><A href="#mxml_node_s" title="An XML node.">mxml_node_s</A></LI>
<LI><A href="#mxml_text_s" title="An XML text value.">mxml_text_s</A></LI>
</UL>
</LI>
<LI><A href="#UNIONS">Unions</A>
<UL class="code">
<LI><A href="#mxml_value_u" title="An XML node value.">mxml_value_u</A></LI>
</UL>
</LI>
<LI><A href="#ENUMERATIONS">Constants</A>
<UL class="code">
<LI><A href="#mxml_sax_event_e" title="SAX event type.">mxml_sax_event_e</A>
</LI>
<LI><A href="#mxml_type_e" title="The XML node type.">mxml_type_e</A></LI>
</UL>
</LI>
</UL>
<H2 class="title"><A name="FUNCTIONS">Functions</A></H2>
<H3 class="function"><A name="mxmlAdd">mxmlAdd</A></H3>
<P class="description">Add a node to a tree.</P>
<P class="code"> void mxmlAdd (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int where,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *child,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node</DD>
<DT>where</DT>
<DD class="description">Where to add, MXML_ADD_BEFORE or MXML_ADD_AFTER</DD>
<DT>child</DT>
<DD class="description">Child node for where or MXML_ADD_TO_PARENT</DD>
<DT>node</DT>
<DD class="description">Node to add</DD>
</DL>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlDelete">mxmlDelete</A></H3>
<P class="description">Delete a node and all of its children.</P>
<P class="code"> void mxmlDelete (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to delete</DD>
</DL>
<H4 class="discussion">Discussion</H4>
<P class="discussion">If the specified node has a parent, this function
first removes the node from its parent using the mxmlRemove() function.</P>
<H3 class="function"><A NAME="8_2_3">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.4&nbsp;<A name="mxmlElementDeleteAttr">mxmlElementDeleteAttr</A></A>
</H3>
<P class="description">Delete an attribute.</P>
<P class="code"> void mxmlElementDeleteAttr (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *name
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Element</DD>
<DT>name</DT>
<DD class="description">Attribute name</DD>
</DL>
<H3 class="function"><A name="mxmlElementGetAttr">mxmlElementGetAttr</A></H3>
<P class="description">Get an attribute.</P>
<P class="code"> const char *mxmlElementGetAttr (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *name
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Element node</DD>
<DT>name</DT>
<DD class="description">Name of attribute</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Attribute value or NULL</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">This function returns NULL if the node is not an
element or the named attribute does not exist.</P>
<H3 class="function"><A name="mxmlElementSetAttr">mxmlElementSetAttr</A></H3>
<P class="description">Set an attribute.</P>
<P class="code"> void mxmlElementSetAttr (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *name,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *value
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Element node</DD>
<DT>name</DT>
<DD class="description">Name of attribute</DD>
<DT>value</DT>
<DD class="description">Attribute value</DD>
</DL>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A NAME="8_2_6">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlElementSetAttrf">mxmlElementSetAttrf</A></A></H3>
<P class="description">Set an attribute with a formatted value.</P>
<P class="code"> void mxmlElementSetAttrf (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *name,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *format,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;...
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Element node</DD>
<DT>name</DT>
<DD class="description">Name of attribute</DD>
<DT>format</DT>
<DD class="description">Printf-style attribute value</DD>
<DT>...</DT>
<DD class="description">Additional arguments as needed</DD>
</DL>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlEntityAddCallback">
mxmlEntityAddCallback</A></H3>
<P class="description">Add a callback to convert entities to Unicode.</P>
<P class="code"> int mxmlEntityAddCallback (void);</P>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H3 class="function"><A name="mxmlEntityGetName">mxmlEntityGetName</A></H3>
<P class="description">Get the name that corresponds to the character
value.</P>
<P class="code"> const char *mxmlEntityGetName (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int val
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>val</DT>
<DD class="description">Character value</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Entity name or NULL</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">If val does not need to be represented by a named
entity, NULL is returned.</P>
<H3 class="function"><A name="mxmlEntityGetValue">mxmlEntityGetValue</A></H3>
<P class="description">Get the character corresponding to a named
entity.</P>
<P class="code"> int mxmlEntityGetValue (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *name
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>name</DT>
<DD class="description">Entity name</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Character value or -1 on error</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The entity name can also be a numeric constant. -1
is returned if the name is not known.</P>
<H3 class="function"><A name="mxmlEntityRemoveCallback">
mxmlEntityRemoveCallback</A></H3>
<P class="description">Remove a callback.</P>
<P class="code"> void mxmlEntityRemoveCallback (void);</P>
<H3 class="function"><A name="mxmlFindElement">mxmlFindElement</A></H3>
<P class="description">Find the named element.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlFindElement
(
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *name,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *attr,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *value,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int descend
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Current node</DD>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>name</DT>
<DD class="description">Element name or NULL for any</DD>
<DT>attr</DT>
<DD class="description">Attribute name, or NULL for none</DD>
<DT>value</DT>
<DD class="description">Attribute value, or NULL for any</DD>
<DT>descend</DT>
<DD class="description">Descend into tree - MXML_DESCEND,
MXML_NO_DESCEND, or MXML_DESCEND_FIRST</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Element node or NULL</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlIndexDelete">mxmlIndexDelete</A></H3>
<P class="description">Delete an index.</P>
<P class="code"> void mxmlIndexDelete (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_index_t">mxml_index_t</A> *ind
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>ind</DT>
<DD class="description">Index to delete</DD>
</DL>
<H3 class="function"><A name="mxmlIndexEnum">mxmlIndexEnum</A></H3>
<P class="description">Return the next node in the index.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlIndexEnum (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_index_t">mxml_index_t</A> *ind
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>ind</DT>
<DD class="description">Index to enumerate</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Next node or NULL if there is none</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">Nodes are returned in the sorted order of the
index.</P>
<H3 class="function"><A name="mxmlIndexFind">mxmlIndexFind</A></H3>
<P class="description">Find the next matching node.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlIndexFind (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_index_t">mxml_index_t</A> *ind,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *element,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *value
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>ind</DT>
<DD class="description">Index to search</DD>
<DT>element</DT>
<DD class="description">Element name to find, if any</DD>
<DT>value</DT>
<DD class="description">Attribute value, if any</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Node or NULL if none found</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlIndexNew">mxmlIndexNew</A></H3>
<P class="description">Create a new index.</P>
<P class="code"> <A href="#mxml_index_t">mxml_index_t</A> *mxmlIndexNew
(
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *element,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *attr
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">XML node tree</DD>
<DT>element</DT>
<DD class="description">Element to index or NULL for all</DD>
<DT>attr</DT>
<DD class="description">Attribute to index or NULL for none</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New index</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlIndexReset">mxmlIndexReset</A></H3>
<P class="description">Reset the enumeration/find pointer in the index
and return the first node in the index.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlIndexReset
(
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_index_t">mxml_index_t</A> *ind
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>ind</DT>
<DD class="description">Index to reset</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">First node or NULL if there is none</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">This function should be called prior to using
mxmlIndexEnum() or mxmlIndexFind() for the first time.</P>
<H3 class="function"><A name="mxmlLoadFd">mxmlLoadFd</A></H3>
<P class="description">Load a file descriptor into an XML node tree.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlLoadFd (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int fd,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>fd</DT>
<DD class="description">File descriptor to read from</DD>
<DT>cb</DT>
<DD class="description">Callback function or MXML_NO_CALLBACK</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">First node or NULL if the file could not be read.</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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.
<BR>
<BR> 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>
<H3 class="function"><A name="mxmlLoadFile">mxmlLoadFile</A></H3>
<P class="description">Load a file into an XML node tree.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlLoadFile (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;FILE *fp,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>fp</DT>
<DD class="description">File to read from</DD>
<DT>cb</DT>
<DD class="description">Callback function or MXML_NO_CALLBACK</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">First node or NULL if the file could not be read.</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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.
<BR>
<BR> 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>
<H3 class="function"><A name="mxmlLoadString">mxmlLoadString</A></H3>
<P class="description">Load a string into an XML node tree.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlLoadString
(
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *s,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>s</DT>
<DD class="description">String to load</DD>
<DT>cb</DT>
<DD class="description">Callback function or MXML_NO_CALLBACK</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">First node or NULL if the string has errors.</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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.
<BR>
<BR> 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>
<H3 class="function"><A NAME="8_2_20">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlNewCDATA">mxmlNewCDATA</A></A></H3>
<P class="description">Create a new CDATA node.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewCDATA (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *data
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node or MXML_NO_PARENT</DD>
<DT>data</DT>
<DD class="description">Data string</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A NAME="8_2_21">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.1&nbsp;<A name="mxmlNewCustom">mxmlNewCustom</A></A></H3>
<P class="description">Create a new custom data node.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewCustom (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;void *data,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_custom_destroy_cb_t">mxml_custom_destroy_cb_t</A>
destroy
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node or MXML_NO_PARENT</DD>
<DT>data</DT>
<DD class="description">Pointer to data</DD>
<DT>destroy</DT>
<DD class="description">Function to destroy data</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlNewElement">mxmlNewElement</A></H3>
<P class="description">Create a new element node.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewElement
(
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *name
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node or MXML_NO_PARENT</DD>
<DT>name</DT>
<DD class="description">Name of element</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlNewInteger">mxmlNewInteger</A></H3>
<P class="description">Create a new integer node.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewInteger
(
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int integer
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node or MXML_NO_PARENT</DD>
<DT>integer</DT>
<DD class="description">Integer value</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlNewOpaque">mxmlNewOpaque</A></H3>
<P class="description">Create a new opaque string.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewOpaque (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *opaque
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node or MXML_NO_PARENT</DD>
<DT>opaque</DT>
<DD class="description">Opaque string</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlNewReal">mxmlNewReal</A></H3>
<P class="description">Create a new real number node.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewReal (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;double real
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node or MXML_NO_PARENT</DD>
<DT>real</DT>
<DD class="description">Real number value</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlNewText">mxmlNewText</A></H3>
<P class="description">Create a new text fragment node.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewText (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int whitespace,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *string
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node or MXML_NO_PARENT</DD>
<DT>whitespace</DT>
<DD class="description">1 = leading whitespace, 0 = no whitespace</DD>
<DT>string</DT>
<DD class="description">String</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlNewTextf">mxmlNewTextf</A></H3>
<P class="description">Create a new formatted text fragment node.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewTextf (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *parent,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int whitespace,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *format,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;...
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>parent</DT>
<DD class="description">Parent node or MXML_NO_PARENT</DD>
<DT>whitespace</DT>
<DD class="description">1 = leading whitespace, 0 = no whitespace</DD>
<DT>format</DT>
<DD class="description">Printf-style frmat string</DD>
<DT>...</DT>
<DD class="description">Additional args as needed</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A NAME="8_2_28">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlNewXML">mxmlNewXML</A></A></H3>
<P class="description">Create a new XML document tree.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlNewXML (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *version
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>version</DT>
<DD class="description">Version number to use</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New ?xml node</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The &quot;version&quot; argument specifies the version
number to put in the ?xml element node. If NULL, version 1.0 is
assumed.</P>
<H3 class="function"><A NAME="8_2_29">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlRelease">mxmlRelease</A></A></H3>
<P class="description">Release a node.</P>
<P class="code"> int mxmlRelease (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New reference count</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">When the reference count reaches zero, the node
(and any children) is deleted via mxmlDelete().</P>
<H3 class="function"><A name="mxmlRemove">mxmlRemove</A></H3>
<P class="description">Remove a node from its parent.</P>
<P class="code"> void mxmlRemove (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to remove</DD>
</DL>
<H4 class="discussion">Discussion</H4>
<P class="discussion">Does not free memory used by the node - use
mxmlDelete() for that. This function does nothing if the node has no
parent.</P>
<H3 class="function"><A NAME="8_2_31">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlRetain">mxmlRetain</A></A></H3>
<P class="description">Retain a node.</P>
<P class="code"> int mxmlRetain (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">New reference count</P>
<H3 class="function"><A NAME="8_2_32">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSAXLoadFd">mxmlSAXLoadFd</A></A></H3>
<P class="description">Load a file descriptor into an XML node tree
using a SAX callback.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlSAXLoadFd (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int fd,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_sax_cb_t">mxml_sax_cb_t</A> sax_cb,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;void *sax_data
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>fd</DT>
<DD class="description">File descriptor to read from</DD>
<DT>cb</DT>
<DD class="description">Callback function or MXML_NO_CALLBACK</DD>
<DT>sax_cb</DT>
<DD class="description">SAX callback or MXML_NO_CALLBACK</DD>
<DT>sax_data</DT>
<DD class="description">SAX user data</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">First node or NULL if the file could not be read.</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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.
<BR>
<BR> 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.
<BR>
<BR> 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>
<H3 class="function"><A NAME="8_2_33">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSAXLoadFile">mxmlSAXLoadFile</A></A></H3>
<P class="description">Load a file into an XML node tree using a SAX
callback.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlSAXLoadFile
(
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;FILE *fp,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_sax_cb_t">mxml_sax_cb_t</A> sax_cb,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;void *sax_data
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>fp</DT>
<DD class="description">File to read from</DD>
<DT>cb</DT>
<DD class="description">Callback function or MXML_NO_CALLBACK</DD>
<DT>sax_cb</DT>
<DD class="description">SAX callback or MXML_NO_CALLBACK</DD>
<DT>sax_data</DT>
<DD class="description">SAX user data</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">First node or NULL if the file could not be read.</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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.
<BR>
<BR> 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.
<BR>
<BR> 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>
<H3 class="function"><A NAME="8_2_34">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSAXLoadString">mxmlSAXLoadString</A></A></H3>
<P class="description">Load a string into an XML node tree using a SAX
callback.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A>
*mxmlSAXLoadString (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *s,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_load_cb_t">mxml_load_cb_t</A> cb,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_sax_cb_t">mxml_sax_cb_t</A> sax_cb,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;void *sax_data
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>s</DT>
<DD class="description">String to load</DD>
<DT>cb</DT>
<DD class="description">Callback function or MXML_NO_CALLBACK</DD>
<DT>sax_cb</DT>
<DD class="description">SAX callback or MXML_NO_CALLBACK</DD>
<DT>sax_data</DT>
<DD class="description">SAX user data</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">First node or NULL if the string has errors.</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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.
<BR>
<BR> 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.
<BR>
<BR> 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>
<H3 class="function"><A name="mxmlSaveAllocString">mxmlSaveAllocString</A>
</H3>
<P class="description">Save an XML node tree to an allocated string.</P>
<P class="code"> char *mxmlSaveAllocString (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_save_cb_t">mxml_save_cb_t</A> cb
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to write</DD>
<DT>cb</DT>
<DD class="description">Whitespace callback or MXML_NO_CALLBACK</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Allocated string or NULL</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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.
<BR>
<BR> 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>
<H3 class="function"><A name="mxmlSaveFd">mxmlSaveFd</A></H3>
<P class="description">Save an XML tree to a file descriptor.</P>
<P class="code"> int mxmlSaveFd (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int fd,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_save_cb_t">mxml_save_cb_t</A> cb
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to write</DD>
<DT>fd</DT>
<DD class="description">File descriptor to write to</DD>
<DT>cb</DT>
<DD class="description">Whitespace callback or MXML_NO_CALLBACK</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on error.</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlSaveFile">mxmlSaveFile</A></H3>
<P class="description">Save an XML tree to a file.</P>
<P class="code"> int mxmlSaveFile (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;FILE *fp,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_save_cb_t">mxml_save_cb_t</A> cb
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to write</DD>
<DT>fp</DT>
<DD class="description">File to write to</DD>
<DT>cb</DT>
<DD class="description">Whitespace callback or MXML_NO_CALLBACK</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on error.</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlSaveString">mxmlSaveString</A></H3>
<P class="description">Save an XML node tree to a string.</P>
<P class="code"> int mxmlSaveString (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;char *buffer,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int bufsize,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_save_cb_t">mxml_save_cb_t</A> cb
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to write</DD>
<DT>buffer</DT>
<DD class="description">String buffer</DD>
<DT>bufsize</DT>
<DD class="description">Size of string buffer</DD>
<DT>cb</DT>
<DD class="description">Whitespace callback or MXML_NO_CALLBACK</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Size of string</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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.
<BR>
<BR> 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>
<H3 class="function"><A NAME="8_2_39">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSetCDATA">mxmlSetCDATA</A></A></H3>
<P class="description">Set the element name of a CDATA node.</P>
<P class="code"> int mxmlSetCDATA (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *data
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to set</DD>
<DT>data</DT>
<DD class="description">New data string</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The node is not changed if it is not a CDATA
element node.</P>
<H3 class="function"><A NAME="8_2_40">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.1&nbsp;<A name="mxmlSetCustom">mxmlSetCustom</A></A></H3>
<P class="description">Set the data and destructor of a custom data
node.</P>
<P class="code"> int mxmlSetCustom (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;void *data,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_custom_destroy_cb_t">mxml_custom_destroy_cb_t</A>
destroy
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to set</DD>
<DT>data</DT>
<DD class="description">New data pointer</DD>
<DT>destroy</DT>
<DD class="description">New destructor function</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The node is not changed if it is not a custom
node.</P>
<H3 class="function"><A name="mxmlSetCustomHandlers">
mxmlSetCustomHandlers</A></H3>
<P class="description">Set the handling functions for custom data.</P>
<P class="code"> void mxmlSetCustomHandlers (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_custom_load_cb_t">mxml_custom_load_cb_t</A>
load,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_custom_save_cb_t">mxml_custom_save_cb_t</A> save
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>load</DT>
<DD class="description">Load function</DD>
<DT>save</DT>
<DD class="description">Save function</DD>
</DL>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The load function accepts a node pointer and a
data string and must return 0 on success and non-zero on error.
<BR>
<BR> The save function accepts a node pointer and must return a malloc'd
string on success and NULL on error.</P>
<H3 class="function"><A name="mxmlSetElement">mxmlSetElement</A></H3>
<P class="description">Set the name of an element node.</P>
<P class="code"> int mxmlSetElement (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *name
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to set</DD>
<DT>name</DT>
<DD class="description">New name string</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The node is not changed if it is not an element
node.</P>
<H3 class="function"><A name="mxmlSetErrorCallback">mxmlSetErrorCallback</A>
</H3>
<P class="description">Set the error message callback.</P>
<P class="code"> void mxmlSetErrorCallback (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_error_cb_t">mxml_error_cb_t</A> cb
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>cb</DT>
<DD class="description">Error callback function</DD>
</DL>
<H3 class="function"><A name="mxmlSetInteger">mxmlSetInteger</A></H3>
<P class="description">Set the value of an integer node.</P>
<P class="code"> int mxmlSetInteger (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int integer
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to set</DD>
<DT>integer</DT>
<DD class="description">Integer value</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The node is not changed if it is not an integer
node.</P>
<H3 class="function"><A name="mxmlSetOpaque">mxmlSetOpaque</A></H3>
<P class="description">Set the value of an opaque node.</P>
<P class="code"> int mxmlSetOpaque (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *opaque
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to set</DD>
<DT>opaque</DT>
<DD class="description">Opaque string</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The node is not changed if it is not an opaque
node.</P>
<H3 class="function"><A name="mxmlSetReal">mxmlSetReal</A></H3>
<P class="description">Set the value of a real number node.</P>
<P class="code"> int mxmlSetReal (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;double real
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to set</DD>
<DT>real</DT>
<DD class="description">Real number value</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The node is not changed if it is not a real number
node.</P>
<H3 class="function"><A name="mxmlSetText">mxmlSetText</A></H3>
<P class="description">Set the value of a text node.</P>
<P class="code"> int mxmlSetText (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int whitespace,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *string
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to set</DD>
<DT>whitespace</DT>
<DD class="description">1 = leading whitespace, 0 = no whitespace</DD>
<DT>string</DT>
<DD class="description">String</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The node is not changed if it is not a text node.</P>
<H3 class="function"><A name="mxmlSetTextf">mxmlSetTextf</A></H3>
<P class="description">Set the value of a text node to a formatted
string.</P>
<P class="code"> int mxmlSetTextf (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int whitespace,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;const char *format,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;...
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Node to set</DD>
<DT>whitespace</DT>
<DD class="description">1 = leading whitespace, 0 = no whitespace</DD>
<DT>format</DT>
<DD class="description">Printf-style format string</DD>
<DT>...</DT>
<DD class="description">Additional arguments as needed</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">0 on success, -1 on failure</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">The node is not changed if it is not a text node.</P>
<H3 class="function"><A NAME="8_2_49">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;<A name="mxmlSetWrapMargin">mxmlSetWrapMargin</A></A></H3>
<P class="description">Set the the wrap margin when saving XML data.</P>
<P class="code"> void mxmlSetWrapMargin (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int column
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>column</DT>
<DD class="description">Column for wrapping</DD>
</DL>
<H4 class="discussion">Discussion</H4>
<P class="discussion">Wrapping is disabled when &quot;column&quot; is &lt;= 0.</P>
<H3 class="function"><A name="mxmlWalkNext">mxmlWalkNext</A></H3>
<P class="description">Walk to the next logical node in the tree.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlWalkNext (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int descend
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Current node</DD>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>descend</DT>
<DD class="description">Descend into tree - MXML_DESCEND,
MXML_NO_DESCEND, or MXML_DESCEND_FIRST</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Next node or NULL</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H3 class="function"><A name="mxmlWalkPrev">mxmlWalkPrev</A></H3>
<P class="description">Walk to the previous logical node in the tree.</P>
<P class="code"> <A href="#mxml_node_t">mxml_node_t</A> *mxmlWalkPrev (
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *node,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> *top,
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int descend
<BR> );</P>
<H4 class="parameters">Parameters</H4>
<DL>
<DT>node</DT>
<DD class="description">Current node</DD>
<DT>top</DT>
<DD class="description">Top node</DD>
<DT>descend</DT>
<DD class="description">Descend into tree - MXML_DESCEND,
MXML_NO_DESCEND, or MXML_DESCEND_FIRST</DD>
</DL>
<H4 class="returnvalue">Return Value</H4>
<P class="description">Previous node or NULL</P>
<H4 class="discussion">Discussion</H4>
<P class="discussion">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>
<H2 class="title"><A name="TYPES">Data Types</A></H2>
<H3 class="typedef"><A name="mxml_attr_t">mxml_attr_t</A></H3>
<P class="description">An XML element attribute value.</P>
<P class="code"> typedef struct <A href="#mxml_attr_s">mxml_attr_s</A>
mxml_attr_t;</P>
<H3 class="typedef"><A name="mxml_custom_destroy_cb_t">
mxml_custom_destroy_cb_t</A></H3>
<P class="description">Custom data destructor</P>
<P class="code"> typedef void (*mxml_custom_destroy_cb_t)(void *);</P>
<H3 class="typedef"><A name="mxml_custom_load_cb_t">
mxml_custom_load_cb_t</A></H3>
<P class="description">Custom data load callback function</P>
<P class="code"> typedef int (*mxml_custom_load_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *, const char *);</P>
<H3 class="typedef"><A name="mxml_custom_save_cb_t">
mxml_custom_save_cb_t</A></H3>
<P class="description">Custom data save callback function</P>
<P class="code"> typedef char *(*mxml_custom_save_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *);</P>
<H3 class="typedef"><A NAME="8_3_5">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.1&nbsp;<A name="mxml_custom_t">mxml_custom_t</A></A></H3>
<P class="description">An XML custom value.</P>
<P class="code"> typedef struct <A href="#mxml_custom_s">mxml_custom_s</A>
mxml_custom_t;</P>
<H3 class="typedef"><A name="mxml_element_t">mxml_element_t</A></H3>
<P class="description">An XML element value.</P>
<P class="code"> typedef struct <A href="#mxml_element_s">mxml_element_s</A>
mxml_element_t;</P>
<H3 class="typedef"><A name="mxml_error_cb_t">mxml_error_cb_t</A></H3>
<P class="description">Error callback function</P>
<P class="code"> typedef void (*mxml_error_cb_t)(const char *);</P>
<H3 class="typedef"><A name="mxml_index_t">mxml_index_t</A></H3>
<P class="description">An XML node index.</P>
<P class="code"> typedef struct <A href="#mxml_index_s">mxml_index_s</A>
mxml_index_t;</P>
<H3 class="typedef"><A name="mxml_load_cb_t">mxml_load_cb_t</A></H3>
<P class="description">Load callback function</P>
<P class="code"> typedef mxml_type_t (*mxml_load_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *);</P>
<H3 class="typedef"><A name="mxml_node_t">mxml_node_t</A></H3>
<P class="description">An XML node.</P>
<P class="code"> typedef struct <A href="#mxml_node_s">mxml_node_s</A>
mxml_node_t;</P>
<H3 class="typedef"><A name="mxml_save_cb_t">mxml_save_cb_t</A></H3>
<P class="description">Save callback function</P>
<P class="code"> typedef const char *(*mxml_save_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *, int);</P>
<H3 class="typedef"><A name="mxml_sax_cb_t">mxml_sax_cb_t</A></H3>
<P class="description">SAX callback function</P>
<P class="code"> typedef void (*mxml_sax_cb_t)(<A href="#mxml_node_t">
mxml_node_t</A> *, mxml_sax_event_t, void *);</P>
<H3 class="typedef"><A name="mxml_sax_event_t">mxml_sax_event_t</A></H3>
<P class="description">SAX event type.</P>
<P class="code"> typedef enum <A href="#mxml_sax_event_e">
mxml_sax_event_e</A> mxml_sax_event_t;</P>
<H3 class="typedef"><A name="mxml_text_t">mxml_text_t</A></H3>
<P class="description">An XML text value.</P>
<P class="code"> typedef struct <A href="#mxml_text_s">mxml_text_s</A>
mxml_text_t;</P>
<H3 class="typedef"><A name="mxml_value_t">mxml_value_t</A></H3>
<P class="description">An XML node value.</P>
<P class="code"> typedef union <A href="#mxml_value_u">mxml_value_u</A>
mxml_value_t;</P>
<H2 class="title"><A name="STRUCTURES">Structures</A></H2>
<H3 class="struct"><A name="mxml_attr_s">mxml_attr_s</A></H3>
<P class="description">An XML element attribute value.</P>
<P class="code">struct mxml_attr_s {
<BR> &nbsp;&nbsp;&nbsp;&nbsp;char *name;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;char *value;
<BR> };</P>
<H4 class="members">Members</H4>
<DL>
<DT>name</DT>
<DD class="description">Attribute name</DD>
<DT>value</DT>
<DD class="description">Attribute value</DD>
</DL>
<H3 class="struct"><A NAME="8_4_2">
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.1&nbsp;<A name="mxml_custom_s">mxml_custom_s</A></A></H3>
<P class="description">An XML custom value.</P>
<P class="code">struct mxml_custom_s {
<BR> &nbsp;&nbsp;&nbsp;&nbsp;void *data;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_custom_destroy_cb_t">mxml_custom_destroy_cb_t</A>
destroy;
<BR> };</P>
<H4 class="members">Members</H4>
<DL>
<DT>data</DT>
<DD class="description">Pointer to (allocated) custom data</DD>
<DT>destroy</DT>
<DD class="description">Pointer to destructor function</DD>
</DL>
<H3 class="struct"><A name="mxml_element_s">mxml_element_s</A></H3>
<P class="description">An XML element value.</P>
<P class="code">struct mxml_element_s {
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_attr_t">mxml_attr_t</A> *attrs;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;char *name;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int num_attrs;
<BR> };</P>
<H4 class="members">Members</H4>
<DL>
<DT>attrs</DT>
<DD class="description">Attributes</DD>
<DT>name</DT>
<DD class="description">Name of element</DD>
<DT>num_attrs</DT>
<DD class="description">Number of attributes</DD>
</DL>
<H3 class="struct"><A name="mxml_index_s">mxml_index_s</A></H3>
<P class="description">An XML node index.</P>
<P class="code">struct mxml_index_s {
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int alloc_nodes;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;char *attr;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int cur_node;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_node_t">mxml_node_t</A> **nodes;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int num_nodes;
<BR> };</P>
<H4 class="members">Members</H4>
<DL>
<DT>alloc_nodes</DT>
<DD class="description">Allocated nodes in index</DD>
<DT>attr</DT>
<DD class="description">Attribute used for indexing or NULL</DD>
<DT>cur_node</DT>
<DD class="description">Current node</DD>
<DT>nodes</DT>
<DD class="description">Node array</DD>
<DT>num_nodes</DT>
<DD class="description">Number of nodes in index</DD>
</DL>
<H3 class="struct"><A name="mxml_node_s">mxml_node_s</A></H3>
<P class="description">An XML node.</P>
<P class="code">struct mxml_node_s {
<BR> &nbsp;&nbsp;&nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> *child;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> *last_child;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> *next;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> *parent;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;struct <A href="#mxml_node_s">mxml_node_s</A> *prev;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int ref_count;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;mxml_type_t type;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;void *user_data;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_value_t">mxml_value_t</A> value;
<BR> };</P>
<H4 class="members">Members</H4>
<DL>
<DT>child</DT>
<DD class="description">First child node</DD>
<DT>last_child</DT>
<DD class="description">Last child node</DD>
<DT>next</DT>
<DD class="description">Next node under same parent</DD>
<DT>parent</DT>
<DD class="description">Parent node</DD>
<DT>prev</DT>
<DD class="description">Previous node under same parent</DD>
<DT>ref_count</DT>
<DD class="description">Use count</DD>
<DT>type</DT>
<DD class="description">Node type</DD>
<DT>user_data</DT>
<DD class="description">User data</DD>
<DT>value</DT>
<DD class="description">Node value</DD>
</DL>
<H3 class="struct"><A name="mxml_text_s">mxml_text_s</A></H3>
<P class="description">An XML text value.</P>
<P class="code">struct mxml_text_s {
<BR> &nbsp;&nbsp;&nbsp;&nbsp;char *string;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int whitespace;
<BR> };</P>
<H4 class="members">Members</H4>
<DL>
<DT>string</DT>
<DD class="description">Fragment string</DD>
<DT>whitespace</DT>
<DD class="description">Leading whitespace?</DD>
</DL>
<H2 class="title"><A name="UNIONS">Unions</A></H2>
<H3 class="union"><A name="mxml_value_u">mxml_value_u</A></H3>
<P class="description">An XML node value.</P>
<P class="code">union mxml_value_u {
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_custom_t">mxml_custom_t</A> custom;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_element_t">mxml_element_t</A> element;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;int integer;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;char *opaque;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;double real;
<BR> &nbsp;&nbsp;&nbsp;&nbsp;<A href="#mxml_text_t">mxml_text_t</A> text;
<BR> };</P>
<H4 class="members">Members</H4>
<DL>
<DT>custom
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.1&nbsp;</DT>
<DD class="description">Custom data</DD>
<DT>element</DT>
<DD class="description">Element</DD>
<DT>integer</DT>
<DD class="description">Integer number</DD>
<DT>opaque</DT>
<DD class="description">Opaque string</DD>
<DT>real</DT>
<DD class="description">Real number</DD>
<DT>text</DT>
<DD class="description">Text fragment</DD>
</DL>
<H2 class="title"><A name="ENUMERATIONS">Constants</A></H2>
<H3 class="enumeration"><A name="mxml_sax_event_e">mxml_sax_event_e</A></H3>
<P class="description">SAX event type.</P>
<H4 class="constants">Constants</H4>
<DL>
<DT>MXML_SAX_CDATA</DT>
<DD class="description">CDATA node</DD>
<DT>MXML_SAX_COMMENT</DT>
<DD class="description">Comment node</DD>
<DT>MXML_SAX_DATA</DT>
<DD class="description">Data node</DD>
<DT>MXML_SAX_DIRECTIVE</DT>
<DD class="description">Processing directive node</DD>
<DT>MXML_SAX_ELEMENT_CLOSE</DT>
<DD class="description">Element closed</DD>
<DT>MXML_SAX_ELEMENT_OPEN</DT>
<DD class="description">Element opened</DD>
</DL>
<H3 class="enumeration"><A name="mxml_type_e">mxml_type_e</A></H3>
<P class="description">The XML node type.</P>
<H4 class="constants">Constants</H4>
<DL>
<DT>MXML_CUSTOM
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.1&nbsp;</DT>
<DD class="description">Custom data</DD>
<DT>MXML_ELEMENT</DT>
<DD class="description">XML element with attributes</DD>
<DT>MXML_IGNORE
<!--span class=&quot;info&quot;-->
&nbsp;Mini-XML 2.3&nbsp;</DT>
<DD class="description">Ignore/throw away node</DD>
<DT>MXML_INTEGER</DT>
<DD class="description">Integer value</DD>
<DT>MXML_OPAQUE</DT>
<DD class="description">Opaque string</DD>
<DT>MXML_REAL</DT>
<DD class="description">Real value</DD>
<DT>MXML_TEXT</DT>
<DD class="description">Text fragment</DD>
</DL>
</DIV><HR NOSHADE>
<H1 align="right"><A name="SCHEMA"><IMG align="right" alt="D" height="100"
hspace="10" src="D.gif" width="100"></A>XML Schema</H1>
<P>This appendix provides the XML schema that is used for the XML files
produced by <TT>mxmldoc</TT>. This schema is available on-line at:</P>
<PRE>
http://www.easysw.com/~mike/mxmldoc.xsd
</PRE>
<H2><A NAME="9_1">mxmldoc.xsd</A></H2>
<PRE><SMALL>
&lt;?xml version=&quot;1.0&quot;?&gt;
&lt;xsd:schema xmlns:xsd=&quot;http://www.w3.org/2001/XMLSchema&quot;&gt;
&lt;xsd:annotation&gt;
&lt;xsd:documentation xml:lang=&quot;en&quot;&gt;
Mini-XML 2.3 documentation schema for mxmldoc output.
Copyright 2003-2007 by Michael Sweet.
&lt;/xsd:documentation&gt;
&lt;/xsd:annotation&gt;
&lt;!-- basic element definitions --&gt;
&lt;xsd:element name=&quot;argument&quot; type=&quot;argumentType&quot;/&gt;
&lt;xsd:element name=&quot;class&quot; type=&quot;classType&quot;/&gt;
&lt;xsd:element name=&quot;constant&quot; type=&quot;constantType&quot;/&gt;
&lt;xsd:element name=&quot;description&quot; type=&quot;xsd:string&quot;/&gt;
&lt;xsd:element name=&quot;enumeration&quot; type=&quot;enumerationType&quot;/&gt;
&lt;xsd:element name=&quot;function&quot; type=&quot;functionType&quot;/&gt;
&lt;xsd:element name=&quot;mxmldoc&quot; type=&quot;mxmldocType&quot;/&gt;
&lt;xsd:element name=&quot;namespace&quot; type=&quot;namespaceType&quot;/&gt;
&lt;xsd:element name=&quot;returnvalue&quot; type=&quot;returnvalueType&quot;/&gt;
&lt;xsd:element name=&quot;seealso&quot; type=&quot;identifierList&quot;/&gt;
&lt;xsd:element name=&quot;struct&quot; type=&quot;structType&quot;/&gt;
&lt;xsd:element name=&quot;typedef&quot; type=&quot;typedefType&quot;/&gt;
&lt;xsd:element name=&quot;type&quot; type=&quot;xsd:string&quot;/&gt;
&lt;xsd:element name=&quot;union&quot; type=&quot;unionType&quot;/&gt;
&lt;xsd:element name=&quot;variable&quot; type=&quot;variableType&quot;/&gt;
&lt;!-- descriptions of complex elements --&gt;
&lt;xsd:complexType name=&quot;argumentType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;type&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;default&quot; type=&quot;xsd:string&quot; use=&quot;optional&quot;/&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;xsd:attribute name=&quot;direction&quot; type=&quot;direction&quot; use=&quot;optional&quot;
default=&quot;I&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;classType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:choice minOccurs=&quot;0&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:element ref=&quot;class&quot;/&gt;
&lt;xsd:element ref=&quot;enumeration&quot;/&gt;
&lt;xsd:element ref=&quot;function&quot;/&gt;
&lt;xsd:element ref=&quot;struct&quot;/&gt;
&lt;xsd:element ref=&quot;typedef&quot;/&gt;
&lt;xsd:element ref=&quot;union&quot;/&gt;
&lt;xsd:element ref=&quot;variable&quot;/&gt;
&lt;/xsd:choice&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;xsd:attribute name=&quot;parent&quot; type=&quot;xsd:string&quot; use=&quot;optional&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;constantType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;enumerationType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:element ref=&quot;constant&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;functionType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;returnvalue&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:element ref=&quot;argument&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;unbounded&quot;/&gt;
&lt;xsd:element ref=&quot;seealso&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;xsd:attribute name=&quot;scope&quot; type=&quot;scope&quot; use=&quot;optional&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;mxmldocType&quot;&gt;
&lt;xsd:choice minOccurs=&quot;0&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:element ref=&quot;class&quot;/&gt;
&lt;xsd:element ref=&quot;enumeration&quot;/&gt;
&lt;xsd:element ref=&quot;function&quot;/&gt;
&lt;xsd:element ref=&quot;namespace&quot;/&gt;
&lt;xsd:element ref=&quot;struct&quot;/&gt;
&lt;xsd:element ref=&quot;typedef&quot;/&gt;
&lt;xsd:element ref=&quot;union&quot;/&gt;
&lt;xsd:element ref=&quot;variable&quot;/&gt;
&lt;/xsd:choice&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;namespaceType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:choice minOccurs=&quot;0&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:element ref=&quot;class&quot;/&gt;
&lt;xsd:element ref=&quot;enumeration&quot;/&gt;
&lt;xsd:element ref=&quot;function&quot;/&gt;
&lt;xsd:element ref=&quot;struct&quot;/&gt;
&lt;xsd:element ref=&quot;typedef&quot;/&gt;
&lt;xsd:element ref=&quot;union&quot;/&gt;
&lt;xsd:element ref=&quot;variable&quot;/&gt;
&lt;/xsd:choice&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;returnvalueType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;type&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;structType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:choice minOccurs=&quot;0&quot; maxOccurs=&quot;unbounded&quot;&gt;
&lt;xsd:element ref=&quot;variable&quot;/&gt;
&lt;xsd:element ref=&quot;function&quot;/&gt;
&lt;/xsd:choice&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;typedefType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;type&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;unionType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:element ref=&quot;variable&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;unbounded&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;xsd:complexType name=&quot;variableType&quot;&gt;
&lt;xsd:sequence&gt;
&lt;xsd:element ref=&quot;type&quot; minOccurs=&quot;1&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;xsd:element ref=&quot;description&quot; minOccurs=&quot;0&quot; maxOccurs=&quot;1&quot;/&gt;
&lt;/xsd:sequence&gt;
&lt;xsd:attribute name=&quot;name&quot; type=&quot;identifier&quot; use=&quot;required&quot;/&gt;
&lt;/xsd:complexType&gt;
&lt;!-- data types --&gt;
&lt;xsd:simpleType name=&quot;direction&quot;&gt;
&lt;xsd:restriction base=&quot;xsd:string&quot;&gt;
&lt;xsd:enumeration value=&quot;I&quot;/&gt;
&lt;xsd:enumeration value=&quot;O&quot;/&gt;
&lt;xsd:enumeration value=&quot;IO&quot;/&gt;
&lt;/xsd:restriction&gt;
&lt;/xsd:simpleType&gt;
&lt;xsd:simpleType name=&quot;identifier&quot;&gt;
&lt;xsd:restriction base=&quot;xsd:string&quot;&gt;
&lt;xsd:pattern value=&quot;[a-zA-Z_(.]([a-zA-Z_(.,)* 0-9])*&quot;/&gt;
&lt;/xsd:restriction&gt;
&lt;/xsd:simpleType&gt;
&lt;xsd:simpleType name=&quot;identifierList&quot;&gt;
&lt;xsd:list itemType=&quot;identifier&quot;/&gt;
&lt;/xsd:simpleType&gt;
&lt;xsd:simpleType name=&quot;scope&quot;&gt;
&lt;xsd:restriction base=&quot;xsd:string&quot;&gt;
&lt;xsd:enumeration value=&quot;&quot;/&gt;
&lt;xsd:enumeration value=&quot;private&quot;/&gt;
&lt;xsd:enumeration value=&quot;protected&quot;/&gt;
&lt;xsd:enumeration value=&quot;public&quot;/&gt;
&lt;/xsd:restriction&gt;
&lt;/xsd:simpleType&gt;
&lt;/xsd:schema&gt;
</SMALL></PRE>
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