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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><link rel="SHORTCUT ICON" href="/favicon.ico" /><style type="text/css">
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TD {font-family: Verdana,Arial,Helvetica}
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BODY {font-family: Verdana,Arial,Helvetica; margin-top: 2em; margin-left: 0em; margin-right: 0em}
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H1 {font-family: Verdana,Arial,Helvetica}
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H2 {font-family: Verdana,Arial,Helvetica}
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H3 {font-family: Verdana,Arial,Helvetica}
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A:link, A:visited, A:active { text-decoration: underline }
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</style><title>The tree output</title></head><body bgcolor="#8b7765" text="#000000" link="#a06060" vlink="#000000"> |    | The XML C parser and toolkit of GnomeThe tree output |
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| <center>Developer Menu</center> | | <form action="search.php" enctype="application/x-www-form-urlencoded" method="get"><input name="query" type="text" size="20" value="" /><input name="submit" type="submit" value="Search ..." /></form> |
| <center>API Indexes</center> | |
| <center>Related links</center> | |
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| The parser returns a tree built during the document analysis. The value |
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returned is an xmlDocPtr (i.e., a pointer to an
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xmlDoc structure). This structure contains information such
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as the file name, the document type, and a children pointer
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which is the root of the document (or more exactly the first child under the
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root which is the document). The tree is made of xmlNodes,
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chained in double-linked lists of siblings and with a children<->parent
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relationship. An xmlNode can also carry properties (a chain of xmlAttr
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structures). An attribute may have a value which is a list of TEXT or
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ENTITY_REF nodes.Here is an example (erroneous with respect to the XML spec since there
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should be only one ELEMENT under the root):
In the source package there is a small program (not installed by default)
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called xmllint which parses XML files given as argument and
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prints them back as parsed. This is useful for detecting errors both in XML
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code and in the XML parser itself. It has an option --debug
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which prints the actual in-memory structure of the document; here is the
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result with the example given before:DOCUMENT
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version=1.0
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standalone=true
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ELEMENT EXAMPLE
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ATTRIBUTE prop1
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TEXT
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content=gnome is great
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ATTRIBUTE prop2
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ENTITY_REF
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TEXT
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content= linux too
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ELEMENT head
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ELEMENT title
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TEXT
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content=Welcome to Gnome
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ELEMENT chapter
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ELEMENT title
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TEXT
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content=The Linux adventure
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ELEMENT p
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TEXT
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content=bla bla bla ...
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ELEMENT image
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ATTRIBUTE href
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TEXT
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content=linus.gif
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ELEMENT p
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TEXT
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content=...This should be useful for learning the internal representation model. Daniel Veillard </body></html>
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