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gerrit-public.fairphone.software / platform / external / libxml2 / 3f4c40f78d437cc26749e899987bec208488ce33 / . / doc / tree.html
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13<title>The tree output</title>
14</head>
15<body bgcolor="#8b7765" text="#000000" link="#000000" vlink="#000000">
16<table border="0" width="100%" cellpadding="5" cellspacing="0" align="center"><tr>
17<td width="180">
18<a href="http://www.gnome.org/"><img src="smallfootonly.gif" alt="Gnome Logo"></a><a href="http://www.w3.org/Status"><img src="w3c.png" alt="W3C Logo"></a><a href="http://www.redhat.com/"><img src="redhat.gif" alt="Red Hat Logo"></a>
19</td>
20<td><table border="0" width="90%" cellpadding="2" cellspacing="0" align="center" bgcolor="#000000"><tr><td><table width="100%" border="0" cellspacing="1" cellpadding="3" bgcolor="#fffacd"><tr><td align="center">
21<h1>The XML C library for Gnome</h1>
22<h2>The tree output</h2>
23</td></tr></table></td></tr></table></td>
24</tr></table>
25<table border="0" cellpadding="4" cellspacing="0" width="100%" align="center"><tr><td bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="2" width="100%"><tr>
Daniel Veillard594cf0b2001-10-25 08:09:12 +0000[diff] [blame]26<td valign="top" width="200" bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="1" width="100%" bgcolor="#000000"><tr><td>
27<table width="100%" border="0" cellspacing="1" cellpadding="3">
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]28<tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Main Menu</b></center></td></tr>
Daniel Veillard8acca112002-01-21 09:52:27 +0000[diff] [blame]29<tr><td bgcolor="#fffacd"><ul>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]30<li><a href="index.html">Home</a></li>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]31<li><a href="intro.html">Introduction</a></li>
Daniel Veillardb8cfbd12001-10-25 10:53:28 +0000[diff] [blame]32<li><a href="FAQ.html">FAQ</a></li>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]33<li><a href="docs.html">Documentation</a></li>
34<li><a href="bugs.html">Reporting bugs and getting help</a></li>
35<li><a href="help.html">How to help</a></li>
36<li><a href="downloads.html">Downloads</a></li>
37<li><a href="news.html">News</a></li>
Daniel Veillard7b602b42002-01-08 13:26:00 +0000[diff] [blame]38<li><a href="XMLinfo.html">XML</a></li>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]39<li><a href="XSLT.html">XSLT</a></li>
Daniel Veillardb8cfbd12001-10-25 10:53:28 +0000[diff] [blame]40<li><a href="architecture.html">libxml architecture</a></li>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]41<li><a href="tree.html">The tree output</a></li>
42<li><a href="interface.html">The SAX interface</a></li>
Daniel Veillardb8cfbd12001-10-25 10:53:28 +0000[diff] [blame]43<li><a href="xmldtd.html">Validation &amp; DTDs</a></li>
44<li><a href="xmlmem.html">Memory Management</a></li>
45<li><a href="encoding.html">Encodings support</a></li>
46<li><a href="xmlio.html">I/O Interfaces</a></li>
47<li><a href="catalog.html">Catalog support</a></li>
48<li><a href="library.html">The parser interfaces</a></li>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]49<li><a href="entities.html">Entities or no entities</a></li>
50<li><a href="namespaces.html">Namespaces</a></li>
Daniel Veillardb8cfbd12001-10-25 10:53:28 +0000[diff] [blame]51<li><a href="upgrade.html">Upgrading 1.x code</a></li>
Daniel Veillard52dcab32001-10-30 12:51:17 +0000[diff] [blame]52<li><a href="threads.html">Thread safety</a></li>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]53<li><a href="DOM.html">DOM Principles</a></li>
54<li><a href="example.html">A real example</a></li>
55<li><a href="contribs.html">Contributions</a></li>
Daniel Veillard594cf0b2001-10-25 08:09:12 +0000[diff] [blame]56<li>
57<a href="xml.html">flat page</a>, <a href="site.xsl">stylesheet</a>
58</li>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]59</ul></td></tr>
Daniel Veillard594cf0b2001-10-25 08:09:12 +0000[diff] [blame]60</table>
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Daniel Veillard3bf65be2002-01-23 12:36:34 +0000[diff] [blame]62<tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>API Indexes</b></center></td></tr>
63<tr><td bgcolor="#fffacd"><ul>
Daniel Veillardf8592562002-01-23 17:58:17 +0000[diff] [blame]64<li><a href="APIchunk0.html">Alphabetic</a></li>
Daniel Veillard3bf65be2002-01-23 12:36:34 +0000[diff] [blame]65<li><a href="APIconstructors.html">Constructors</a></li>
66<li><a href="APIfunctions.html">Functions/Types</a></li>
67<li><a href="APIfiles.html">Modules</a></li>
68<li><a href="APIsymbols.html">Symbols</a></li>
69</ul></td></tr>
70</table>
71<table width="100%" border="0" cellspacing="1" cellpadding="3">
Daniel Veillard594cf0b2001-10-25 08:09:12 +0000[diff] [blame]72<tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Related links</b></center></td></tr>
Daniel Veillard8acca112002-01-21 09:52:27 +0000[diff] [blame]73<tr><td bgcolor="#fffacd"><ul>
Daniel Veillard594cf0b2001-10-25 08:09:12 +0000[diff] [blame]74<li><a href="http://mail.gnome.org/archives/xml/">Mail archive</a></li>
75<li><a href="http://xmlsoft.org/XSLT/">XSLT libxslt</a></li>
Daniel Veillard4a859202002-01-08 11:49:22 +0000[diff] [blame]76<li><a href="http://phd.cs.unibo.it/gdome2/">DOM gdome2</a></li>
Daniel Veillard594cf0b2001-10-25 08:09:12 +0000[diff] [blame]77<li><a href="ftp://xmlsoft.org/">FTP</a></li>
78<li><a href="http://www.fh-frankfurt.de/~igor/projects/libxml/">Windows binaries</a></li>
Daniel Veillarddb9dfd92001-11-26 17:25:02 +0000[diff] [blame]79<li><a href="http://garypennington.net/libxml2/">Solaris binaries</a></li>
Daniel Veillardc6271d22001-10-27 07:50:58 +0000[diff] [blame]80<li><a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml">Bug Tracker</a></li>
Daniel Veillard594cf0b2001-10-25 08:09:12 +0000[diff] [blame]81</ul></td></tr>
82</table>
83</td></tr></table></td>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]84<td valign="top" bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="1" width="100%"><tr><td><table border="0" cellspacing="0" cellpadding="1" width="100%" bgcolor="#000000"><tr><td><table border="0" cellpadding="3" cellspacing="1" width="100%"><tr><td bgcolor="#fffacd">
85<p>The parser returns a tree built during the document analysis. The value
86returned is an <strong>xmlDocPtr</strong> (i.e., a pointer to an
87<strong>xmlDoc</strong> structure). This structure contains information such
88as the file name, the document type, and a <strong>children</strong> pointer
89which is the root of the document (or more exactly the first child under the
90root which is the document). The tree is made of <strong>xmlNode</strong>s,
91chained in double-linked lists of siblings and with a children&lt;-&gt;parent
92relationship. An xmlNode can also carry properties (a chain of xmlAttr
93structures). An attribute may have a value which is a list of TEXT or
94ENTITY_REF nodes.</p>
95<p>Here is an example (erroneous with respect to the XML spec since there
96should be only one ELEMENT under the root):</p>
97<p><img src="structure.gif" alt=" structure.gif "></p>
98<p>In the source package there is a small program (not installed by default)
99called <strong>xmllint</strong> which parses XML files given as argument and
100prints them back as parsed. This is useful for detecting errors both in XML
101code and in the XML parser itself. It has an option <strong>--debug</strong>
102which prints the actual in-memory structure of the document; here is the
103result with the <a href="#example">example</a> given before:</p>
104<pre>DOCUMENT
105version=1.0
106standalone=true
107 ELEMENT EXAMPLE
108 ATTRIBUTE prop1
109 TEXT
110 content=gnome is great
111 ATTRIBUTE prop2
112 ENTITY_REF
113 TEXT
114 content= linux too
115 ELEMENT head
116 ELEMENT title
117 TEXT
118 content=Welcome to Gnome
119 ELEMENT chapter
120 ELEMENT title
121 TEXT
122 content=The Linux adventure
123 ELEMENT p
124 TEXT
125 content=bla bla bla ...
126 ELEMENT image
127 ATTRIBUTE href
128 TEXT
129 content=linus.gif
130 ELEMENT p
131 TEXT
132 content=...</pre>
133<p>This should be useful for learning the internal representation model.</p>
Daniel Veillard3f4c40f2002-02-13 09:19:28 +0000[diff] [blame^]134<p><a href="bugs.html">Daniel Veillard</a></p>
Daniel Veillardc9484202001-10-24 12:35:52 +0000[diff] [blame]135</td></tr></table></td></tr></table></td></tr></table></td>
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