preparing release of 2.6.26 Daniel
* configure.ini NEWS doc//* libxml.spec.in : preparing release of 2.6.26
Daniel
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-</style><title>Python and bindings</title></head><body bgcolor="#8b7765" text="#000000" link="#a06060" vlink="#000000"><table border="0" width="100%" cellpadding="5" cellspacing="0" align="center"><tr><td width="120"><a href="http://swpat.ffii.org/"><img src="epatents.png" alt="Action against software patents" /></a></td><td width="180"><a href="http://www.gnome.org/"><img src="gnome2.png" alt="Gnome2 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><div align="left"><a href="http://xmlsoft.org/"><img src="Libxml2-Logo-180x168.gif" alt="Made with Libxml2 Logo" /></a></div></td><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"><h1>The XML C parser and toolkit of Gnome</h1><h2>Python and bindings</h2></td></tr></table></td></tr></table></td></tr></table><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><td valign="top" width="200" bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="1" width="100%" bgcolor="#000000"><tr><td><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Developer Menu</b></center></td></tr><tr><td bgcolor="#fffacd"><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><ul><li><a href="index.html" style="font-weight:bold">Main Menu</a></li><li><a href="html/index.html" style="font-weight:bold">Reference Manual</a></li><li><a href="examples/index.html" style="font-weight:bold">Code Examples</a></li><li><a href="guidelines.html">XML Guidelines</a></li><li><a href="tutorial/index.html">Tutorial</a></li><li><a href="xmlreader.html">The Reader Interface</a></li><li><a href="ChangeLog.html">ChangeLog</a></li><li><a href="XSLT.html">XSLT</a></li><li><a href="python.html">Python and bindings</a></li><li><a href="architecture.html">libxml2 architecture</a></li><li><a href="tree.html">The tree output</a></li><li><a href="interface.html">The SAX interface</a></li><li><a href="xmlmem.html">Memory Management</a></li><li><a href="xmlio.html">I/O Interfaces</a></li><li><a href="library.html">The parser interfaces</a></li><li><a href="entities.html">Entities or no entities</a></li><li><a href="namespaces.html">Namespaces</a></li><li><a href="upgrade.html">Upgrading 1.x code</a></li><li><a href="threads.html">Thread safety</a></li><li><a href="DOM.html">DOM Principles</a></li><li><a href="example.html">A real example</a></li><li><a href="xml.html">flat page</a>, <a href="site.xsl">stylesheet</a></li></ul></td></tr></table><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>API Indexes</b></center></td></tr><tr><td bgcolor="#fffacd"><ul><li><a href="APIchunk0.html">Alphabetic</a></li><li><a href="APIconstructors.html">Constructors</a></li><li><a href="APIfunctions.html">Functions/Types</a></li><li><a href="APIfiles.html">Modules</a></li><li><a href="APIsymbols.html">Symbols</a></li></ul></td></tr></table><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Related links</b></center></td></tr><tr><td bgcolor="#fffacd"><ul><li><a href="http://mail.gnome.org/archives/xml/">Mail archive</a></li><li><a href="http://xmlsoft.org/XSLT/">XSLT libxslt</a></li><li><a href="http://phd.cs.unibo.it/gdome2/">DOM gdome2</a></li><li><a href="http://www.aleksey.com/xmlsec/">XML-DSig xmlsec</a></li><li><a href="ftp://xmlsoft.org/">FTP</a></li><li><a href="http://www.zlatkovic.com/projects/libxml/">Windows binaries</a></li><li><a href="http://www.blastwave.org/packages.php/libxml2">Solaris binaries</a></li><li><a href="http://www.explain.com.au/oss/libxml2xslt.html">MacOsX binaries</a></li><li><a href="http://libxmlplusplus.sourceforge.net/">C++ bindings</a></li><li><a href="http://www.zend.com/php5/articles/php5-xmlphp.php#Heading4">PHP bindings</a></li><li><a href="http://sourceforge.net/projects/libxml2-pas/">Pascal bindings</a></li><li><a href="http://libxml.rubyforge.org/">Ruby bindings</a></li><li><a href="http://tclxml.sourceforge.net/">Tcl bindings</a></li><li><a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Bug Tracker</a></li></ul></td></tr></table></td></tr></table></td><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"><p>There are a number of language bindings and wrappers available forlibxml2,
-the list below is not exhaustive. Please contact the <a href="http://mail.gnome.org/mailman/listinfo/xml-bindings">xml-bindings@gnome.org</a>(<a href="http://mail.gnome.org/archives/xml-bindings/">archives</a>) inorder to
-get updates to this list or to discuss the specific topic of libxml2or
-libxslt wrappers or bindings:</p><ul><li><a href="http://libxmlplusplus.sourceforge.net/">Libxml++</a>seems
- themost up-to-date C++ bindings for libxml2, check the <a href="http://libxmlplusplus.sourceforge.net/reference/html/hierarchy.html">documentation</a>and
- the <a href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/libxmlplusplus/libxml%2b%2b/examples/">examples</a>.</li>
- <li>There is another <a href="http://libgdome-cpp.berlios.de/">C++
- wrapperbased on the gdome2 bindings</a>maintained by Tobias Peters.</li>
+</style><title>Python and bindings</title></head><body bgcolor="#8b7765" text="#000000" link="#a06060" vlink="#000000"><table border="0" width="100%" cellpadding="5" cellspacing="0" align="center"><tr><td width="120"><a href="http://swpat.ffii.org/"><img src="epatents.png" alt="Action against software patents" /></a></td><td width="180"><a href="http://www.gnome.org/"><img src="gnome2.png" alt="Gnome2 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><div align="left"><a href="http://xmlsoft.org/"><img src="Libxml2-Logo-180x168.gif" alt="Made with Libxml2 Logo" /></a></div></td><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"><h1>The XML C parser and toolkit of Gnome</h1><h2>Python and bindings</h2></td></tr></table></td></tr></table></td></tr></table><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><td valign="top" width="200" bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="1" width="100%" bgcolor="#000000"><tr><td><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Developer Menu</b></center></td></tr><tr><td bgcolor="#fffacd"><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><ul><li><a href="index.html" style="font-weight:bold">Main Menu</a></li><li><a href="html/index.html" style="font-weight:bold">Reference Manual</a></li><li><a href="examples/index.html" style="font-weight:bold">Code Examples</a></li><li><a href="guidelines.html">XML Guidelines</a></li><li><a href="tutorial/index.html">Tutorial</a></li><li><a href="xmlreader.html">The Reader Interface</a></li><li><a href="ChangeLog.html">ChangeLog</a></li><li><a href="XSLT.html">XSLT</a></li><li><a href="python.html">Python and bindings</a></li><li><a href="architecture.html">libxml2 architecture</a></li><li><a href="tree.html">The tree output</a></li><li><a href="interface.html">The SAX interface</a></li><li><a href="xmlmem.html">Memory Management</a></li><li><a href="xmlio.html">I/O Interfaces</a></li><li><a href="library.html">The parser interfaces</a></li><li><a href="entities.html">Entities or no entities</a></li><li><a href="namespaces.html">Namespaces</a></li><li><a href="upgrade.html">Upgrading 1.x code</a></li><li><a href="threads.html">Thread safety</a></li><li><a href="DOM.html">DOM Principles</a></li><li><a href="example.html">A real example</a></li><li><a href="xml.html">flat page</a>, <a href="site.xsl">stylesheet</a></li></ul></td></tr></table><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>API Indexes</b></center></td></tr><tr><td bgcolor="#fffacd"><ul><li><a href="APIchunk0.html">Alphabetic</a></li><li><a href="APIconstructors.html">Constructors</a></li><li><a href="APIfunctions.html">Functions/Types</a></li><li><a href="APIfiles.html">Modules</a></li><li><a href="APIsymbols.html">Symbols</a></li></ul></td></tr></table><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Related links</b></center></td></tr><tr><td bgcolor="#fffacd"><ul><li><a href="http://mail.gnome.org/archives/xml/">Mail archive</a></li><li><a href="http://xmlsoft.org/XSLT/">XSLT libxslt</a></li><li><a href="http://phd.cs.unibo.it/gdome2/">DOM gdome2</a></li><li><a href="http://www.aleksey.com/xmlsec/">XML-DSig xmlsec</a></li><li><a href="ftp://xmlsoft.org/">FTP</a></li><li><a href="http://www.zlatkovic.com/projects/libxml/">Windows binaries</a></li><li><a href="http://www.blastwave.org/packages.php/libxml2">Solaris binaries</a></li><li><a href="http://www.explain.com.au/oss/libxml2xslt.html">MacOsX binaries</a></li><li><a href="http://libxmlplusplus.sourceforge.net/">C++ bindings</a></li><li><a href="http://www.zend.com/php5/articles/php5-xmlphp.php#Heading4">PHP bindings</a></li><li><a href="http://sourceforge.net/projects/libxml2-pas/">Pascal bindings</a></li><li><a href="http://libxml.rubyforge.org/">Ruby bindings</a></li><li><a href="http://tclxml.sourceforge.net/">Tcl bindings</a></li><li><a href="http://bugzilla.gnome.org/buglist.cgi?product=libxml2">Bug Tracker</a></li></ul></td></tr></table></td></tr></table></td><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"><p>There are a number of language bindings and wrappers available
+forlibxml2,the list below is not exhaustive. Please contact the <a href="http://mail.gnome.org/mailman/listinfo/xml-bindings">xml-bindings@gnome.org</a>(<a href="http://mail.gnome.org/archives/xml-bindings/">archives</a>) inorder
+toget updates to this list or to discuss the specific topic of
+libxml2orlibxslt wrappers or bindings:</p><ul><li><a href="http://libxmlplusplus.sourceforge.net/">Libxml++</a>seemsthemost
+ up-to-date C++ bindings for libxml2, check the <a href="http://libxmlplusplus.sourceforge.net/reference/html/hierarchy.html">documentation</a>andthe
+ <a href="http://cvs.sourceforge.net/cgi-bin/viewcvs.cgi/libxmlplusplus/libxml%2b%2b/examples/">examples</a>.</li>
+ <li>There is another <a href="http://libgdome-cpp.berlios.de/">C++wrapperbased on the gdome2
+ bindings</a>maintained by Tobias Peters.</li>
<li>and a third C++ wrapper by Peter Jones <pjones@pmade.org>
<p>Website: <a href="http://pmade.org/pjones/software/xmlwrapp/">http://pmade.org/pjones/software/xmlwrapp/</a></p>
</li>
- <li><a href="http://mail.gnome.org/archives/xml/2001-March/msg00014.html">MattSergeant</a>developed
- <a href="http://axkit.org/download/">XML::LibXSLT</a>, a Perl wrapper
- forlibxml2/libxslt as part of the <a href="http://axkit.com/">AxKit
- XMLapplication server</a>.</li>
- <li>If you're interested into scripting XML processing, have a look at <a href="http://xsh.sourceforge.net/">XSH</a>an XML editing shell based
- onLibxml2 Perl bindings.</li>
- <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave Kuhlman</a>provides
- anearlier version of the libxml/libxslt <a href="http://www.rexx.com/~dkuhlman">wrappers for Python</a>.</li>
- <li>Gopal.V and Peter Minten develop <a href="http://savannah.gnu.org/projects/libxmlsharp">libxml#</a>, a set
- ofC# libxml2 bindings.</li>
- <li>Petr Kozelka provides <a href="http://sourceforge.net/projects/libxml2-pas">Pascal units to
- gluelibxml2</a>with Kylix, Delphi and other Pascal compilers.</li>
- <li>Uwe Fechner also provides <a href="http://sourceforge.net/projects/idom2-pas/">idom2</a>, a
- DOM2implementation for Kylix2/D5/D6 from Borland.</li>
- <li>There is <a href="http://libxml.rubyforge.org/">bindings for
- Ruby</a>and libxml2 bindings are also available in Ruby through the <a href="http://libgdome-ruby.berlios.de/">libgdome-ruby</a>modulemaintained
- by Tobias Peters.</li>
- <li>Steve Ball and contributors maintains <a href="http://tclxml.sourceforge.net/">libxml2 and libxslt bindings
- forTcl</a>.</li>
+ <li><a href="http://mail.gnome.org/archives/xml/2001-March/msg00014.html">MattSergeant</a>developed<a href="http://axkit.org/download/">XML::LibXSLT</a>, a Perl
+ wrapperforlibxml2/libxslt as part of the <a href="http://axkit.com/">AxKitXMLapplication server</a>.</li>
+ <li>If you're interested into scripting XML processing, have a look at <a href="http://xsh.sourceforge.net/">XSH</a>an XML editing shell
+ basedonLibxml2 Perl bindings.</li>
+ <li><a href="mailto:dkuhlman@cutter.rexx.com">Dave
+ Kuhlman</a>providesanearlier version of the libxml/libxslt <a href="http://www.rexx.com/~dkuhlman">wrappers for Python</a>.</li>
+ <li>Gopal.V and Peter Minten develop <a href="http://savannah.gnu.org/projects/libxmlsharp">libxml#</a>, a
+ setofC# libxml2 bindings.</li>
+ <li>Petr Kozelka provides <a href="http://sourceforge.net/projects/libxml2-pas">Pascal units
+ togluelibxml2</a>with Kylix, Delphi and other Pascal compilers.</li>
+ <li>Uwe Fechner also provides <a href="http://sourceforge.net/projects/idom2-pas/">idom2</a>,
+ aDOM2implementation for Kylix2/D5/D6 from Borland.</li>
+ <li>There is <a href="http://libxml.rubyforge.org/">bindings forRuby</a>and
+ libxml2 bindings are also available in Ruby through the <a href="http://libgdome-ruby.berlios.de/">libgdome-ruby</a>modulemaintainedby
+ Tobias Peters.</li>
+ <li>Steve Ball and contributors maintains <a href="http://tclxml.sourceforge.net/">libxml2 and libxslt
+ bindingsforTcl</a>.</li>
<li>libxml2 and libxslt is the default XML library for PHP5.</li>
- <li><a href="http://savannah.gnu.org/projects/classpathx/">LibxmlJ</a>isan
- effort to create a 100% JAXP-compatible Java wrapper for libxml2
- andlibxslt as part of GNU ClasspathX project.</li>
- <li>Patrick McPhee provides Rexx bindings fof libxml2 and libxslt, look
- for<a href="http://www.interlog.com/~ptjm/software.html">RexxXML</a>.</li>
- <li><a href="http://www.satimage.fr/software/en/xml_suite.html">Satimage</a>provides
- <a href="http://www.satimage.fr/software/en/downloads_osaxen.html">XMLLibosax</a>.
- This is an osax for Mac OS X with a set of commands toimplement in
- AppleScript the XML DOM, XPATH and XSLT. Also includescommands for
- Property-lists (Apple's fast lookup table XML format.)</li>
- <li>Francesco Montorsi developped <a href="https://sourceforge.net/project/showfiles.php?group_id=51305&package_id=45182">wxXml2</a>wrappers
- that interface libxml2, allowing wxWidgets applications toload/save/edit
- XML instances.</li>
-</ul><p>The distribution includes a set of Python bindings, which are guaranteedto
-be maintained as part of the library in the future, though the
-Pythoninterface have not yet reached the completeness of the C API.</p><p>Note that some of the Python purist dislike the default set of
-Pythonbindings, rather than complaining I suggest they have a look at <a href="http://codespeak.net/lxml/">lxml the more pythonic bindings for
-libxml2and libxslt</a>and <a href="http://codespeak.net/mailman/listinfo/lxml-dev">help
-MartijnFaassen</a>complete those.</p><p><a href="mailto:stephane.bidoul@softwareag.com">Stéphane
-Bidoul</a>maintains <a href="http://users.skynet.be/sbi/libxml-python/">a
-Windows portof the Python bindings</a>.</p><p>Note to people interested in building bindings, the API is formalized as<a href="libxml2-api.xml">an XML API description file</a>which allows toautomate
-a large part of the Python bindings, this includes functiondescriptions,
-enums, structures, typedefs, etc... The Python script used tobuild the
-bindings is python/generator.py in the source distribution.</p><p>To install the Python bindings there are 2 options:</p><ul><li>If you use an RPM based distribution, simply install the <a href="http://rpmfind.net/linux/rpm2html/search.php?query=libxml2-python">libxml2-pythonRPM</a>(and
- if needed the <a href="http://rpmfind.net/linux/rpm2html/search.php?query=libxslt-python">libxslt-pythonRPM</a>).</li>
- <li>Otherwise use the <a href="ftp://xmlsoft.org/libxml2/python/">libxml2-pythonmodule
- distribution</a>corresponding to your installed version oflibxml2 and
- libxslt. Note that to install it you will need both libxml2and libxslt
- installed and run "python setup.py build install" in themodule tree.</li>
-</ul><p>The distribution includes a set of examples and regression tests for
-thepython bindings in the <code>python/tests</code>directory. Here are
-someexcerpts from those tests:</p><h3>tst.py:</h3><p>This is a basic test of the file interface and DOM navigation:</p><pre>import libxml2, sys
+ <li><a href="http://savannah.gnu.org/projects/classpathx/">LibxmlJ</a>isaneffort
+ to create a 100% JAXP-compatible Java wrapper for libxml2andlibxslt as
+ part of GNU ClasspathX project.</li>
+ <li>Patrick McPhee provides Rexx bindings fof libxml2 and libxslt,
+ lookfor<a href="http://www.interlog.com/~ptjm/software.html">RexxXML</a>.</li>
+ <li><a href="http://www.satimage.fr/software/en/xml_suite.html">Satimage</a>provides<a href="http://www.satimage.fr/software/en/downloads_osaxen.html">XMLLibosax</a>.This
+ is an osax for Mac OS X with a set of commands toimplement inAppleScript
+ the XML DOM, XPATH and XSLT. Also includescommands forProperty-lists
+ (Apple's fast lookup table XML format.)</li>
+ <li>Francesco Montorsi developped <a href="https://sourceforge.net/project/showfiles.php?group_id=51305&package_id=45182">wxXml2</a>wrappersthat
+ interface libxml2, allowing wxWidgets applications toload/save/editXML
+ instances.</li>
+</ul><p>The distribution includes a set of Python bindings, which are
+guaranteedtobe maintained as part of the library in the future, though
+thePythoninterface have not yet reached the completeness of the C API.</p><p>Note that some of the Python purist dislike the default set
+ofPythonbindings, rather than complaining I suggest they have a look at <a href="http://codespeak.net/lxml/">lxml the more pythonic bindings
+forlibxml2and libxslt</a>and <a href="http://codespeak.net/mailman/listinfo/lxml-dev">helpMartijnFaassen</a>complete
+those.</p><p><a href="mailto:stephane.bidoul@softwareag.com">StéphaneBidoul</a>maintains <a href="http://users.skynet.be/sbi/libxml-python/">aWindows portof the Python
+bindings</a>.</p><p>Note to people interested in building bindings, the API is formalized as<a href="libxml2-api.xml">an XML API description file</a>which allows
+toautomatea large part of the Python bindings, this includes
+functiondescriptions,enums, structures, typedefs, etc... The Python script
+used tobuild thebindings is python/generator.py in the source
+distribution.</p><p>To install the Python bindings there are 2 options:</p><ul><li>If you use an RPM based distribution, simply install the <a href="http://rpmfind.net/linux/rpm2html/search.php?query=libxml2-python">libxml2-pythonRPM</a>(andif
+ needed the <a href="http://rpmfind.net/linux/rpm2html/search.php?query=libxslt-python">libxslt-pythonRPM</a>).</li>
+ <li>Otherwise use the <a href="ftp://xmlsoft.org/libxml2/python/">libxml2-pythonmoduledistribution</a>corresponding
+ to your installed version oflibxml2 andlibxslt. Note that to install it
+ you will need both libxml2and libxsltinstalled and run "python setup.py
+ build install" in themodule tree.</li>
+</ul><p>The distribution includes a set of examples and regression tests
+forthepython bindings in the <code>python/tests</code>directory. Here
+aresomeexcerpts from those tests:</p><h3>tst.py:</h3><p>This is a basic test of the file interface and DOM navigation:</p><pre>import libxml2, sys
doc = libxml2.parseFile("tst.xml")
if doc.name != "tst.xml":
@@ -83,25 +80,25 @@
if child.name != "foo":
print "child.name failed"
sys.exit(1)
-doc.freeDoc()</pre><p>The Python module is called libxml2; parseFile is the equivalent
-ofxmlParseFile (most of the bindings are automatically generated, and the
-xmlprefix is removed and the casing convention are kept). All node seen at
-thebinding level share the same subset of accessors:</p><ul><li><code>name</code>: returns the node name</li>
+doc.freeDoc()</pre><p>The Python module is called libxml2; parseFile is the
+equivalentofxmlParseFile (most of the bindings are automatically generated,
+and thexmlprefix is removed and the casing convention are kept). All node
+seen atthebinding level share the same subset of accessors:</p><ul><li><code>name</code>: returns the node name</li>
<li><code>type</code>: returns a string indicating the node type</li>
- <li><code>content</code>: returns the content of the node, it is based
- onxmlNodeGetContent() and hence is recursive.</li>
- <li><code>parent</code>, <code>children</code>,
- <code>last</code>,<code>next</code>, <code>prev</code>,
- <code>doc</code>,<code>properties</code>: pointing to the associated
- element in the tree,those may return None in case no such link
- exists.</li>
-</ul><p>Also note the need to explicitly deallocate documents with freeDoc()
-.Reference counting for libxml2 trees would need quite a lot of work
-tofunction properly, and rather than risk memory leaks if not
-implementedcorrectly it sounds safer to have an explicit function to free a
-tree. Thewrapper python objects like doc, root or child are them
-automatically garbagecollected.</p><h3>validate.py:</h3><p>This test check the validation interfaces and redirection of
-errormessages:</p><pre>import libxml2
+ <li><code>content</code>: returns the content of the node, it is
+ basedonxmlNodeGetContent() and hence is recursive.</li>
+ <li><code>parent</code>,
+ <code>children</code>,<code>last</code>,<code>next</code>,
+ <code>prev</code>,<code>doc</code>,<code>properties</code>: pointing to
+ the associatedelement in the tree,those may return None in case no such
+ linkexists.</li>
+</ul><p>Also note the need to explicitly deallocate documents with
+freeDoc().Reference counting for libxml2 trees would need quite a lot of
+worktofunction properly, and rather than risk memory leaks if
+notimplementedcorrectly it sounds safer to have an explicit function to free
+atree. Thewrapper python objects like doc, root or child are
+themautomatically garbagecollected.</p><h3>validate.py:</h3><p>This test check the validation interfaces and redirection
+oferrormessages:</p><pre>import libxml2
#deactivate error messages from the validation
def noerr(ctx, str):
@@ -116,28 +113,29 @@
valid = ctxt.isValid()
doc.freeDoc()
if valid != 0:
- print "validity check failed"</pre><p>The first thing to notice is the call to registerErrorHandler(), itdefines
-a new error handler global to the library. It is used to avoid seeingthe
-error messages when trying to validate the invalid document.</p><p>The main interest of that test is the creation of a parser context
-withcreateFileParserCtxt() and how the behaviour can be changed before
-callingparseDocument() . Similarly the informations resulting from the
-parsing phaseare also available using context methods.</p><p>Contexts like nodes are defined as class and the libxml2 wrappers maps
-theC function interfaces in terms of objects method as much as possible.
-Thebest to get a complete view of what methods are supported is to look at
-thelibxml2.py module containing all the wrappers.</p><h3>push.py:</h3><p>This test show how to activate the push parser interface:</p><pre>import libxml2
+ print "validity check failed"</pre><p>The first thing to notice is the call to registerErrorHandler(),
+itdefinesa new error handler global to the library. It is used to avoid
+seeingtheerror messages when trying to validate the invalid document.</p><p>The main interest of that test is the creation of a parser
+contextwithcreateFileParserCtxt() and how the behaviour can be changed
+beforecallingparseDocument() . Similarly the informations resulting from
+theparsing phaseare also available using context methods.</p><p>Contexts like nodes are defined as class and the libxml2 wrappers mapstheC
+function interfaces in terms of objects method as much as possible.Thebest to
+get a complete view of what methods are supported is to look atthelibxml2.py
+module containing all the wrappers.</p><h3>push.py:</h3><p>This test show how to activate the push parser interface:</p><pre>import libxml2
ctxt = libxml2.createPushParser(None, "<foo", 4, "test.xml")
ctxt.parseChunk("/>", 2, 1)
doc = ctxt.doc()
-doc.freeDoc()</pre><p>The context is created with a special call based on
-thexmlCreatePushParser() from the C library. The first argument is an
-optionalSAX callback object, then the initial set of data, the length and the
-name ofthe resource in case URI-References need to be computed by the
-parser.</p><p>Then the data are pushed using the parseChunk() method, the last
-callsetting the third argument terminate to 1.</p><h3>pushSAX.py:</h3><p>this test show the use of the event based parsing interfaces. In this
-casethe parser does not build a document, but provides callback information
-asthe parser makes progresses analyzing the data being provided:</p><pre>import libxml2
+doc.freeDoc()</pre><p>The context is created with a special call based
+onthexmlCreatePushParser() from the C library. The first argument is
+anoptionalSAX callback object, then the initial set of data, the length and
+thename ofthe resource in case URI-References need to be computed by
+theparser.</p><p>Then the data are pushed using the parseChunk() method, the
+lastcallsetting the third argument terminate to 1.</p><h3>pushSAX.py:</h3><p>this test show the use of the event based parsing interfaces. In
+thiscasethe parser does not build a document, but provides callback
+informationasthe parser makes progresses analyzing the data being
+provided:</p><pre>import libxml2
log = ""
class callback:
@@ -185,15 +183,16 @@
"characters: bar:endElement foo:endDocument:"
if log != reference:
print "Error got: %s" % log
- print "Expected: %s" % reference</pre><p>The key object in that test is the handler, it provides a number of
-entrypoints which can be called by the parser as it makes progresses to
-indicatethe information set obtained. The full set of callback is larger than
-whatthe callback class in that specific example implements (see the
-SAXdefinition for a complete list). The wrapper will only call those supplied
-bythe object when activated. The startElement receives the names of the
-elementand a dictionary containing the attributes carried by this element.</p><p>Also note that the reference string generated from the callback shows
-asingle character call even though the string "bar" is passed to the
-parserfrom 2 different call to parseChunk()</p><h3>xpath.py:</h3><p>This is a basic test of XPath wrappers support</p><pre>import libxml2
+ print "Expected: %s" % reference</pre><p>The key object in that test is the handler, it provides a number
+ofentrypoints which can be called by the parser as it makes progresses
+toindicatethe information set obtained. The full set of callback is larger
+thanwhatthe callback class in that specific example implements (see
+theSAXdefinition for a complete list). The wrapper will only call those
+suppliedbythe object when activated. The startElement receives the names of
+theelementand a dictionary containing the attributes carried by this
+element.</p><p>Also note that the reference string generated from the callback
+showsasingle character call even though the string "bar" is passed to
+theparserfrom 2 different call to parseChunk()</p><h3>xpath.py:</h3><p>This is a basic test of XPath wrappers support</p><pre>import libxml2
doc = libxml2.parseFile("tst.xml")
ctxt = doc.xpathNewContext()
@@ -205,15 +204,15 @@
print "xpath query: wrong node set value"
sys.exit(1)
doc.freeDoc()
-ctxt.xpathFreeContext()</pre><p>This test parses a file, then create an XPath context to evaluate
-XPathexpression on it. The xpathEval() method execute an XPath query and
-returnsthe result mapped in a Python way. String and numbers are natively
-converted,and node sets are returned as a tuple of libxml2 Python nodes
-wrappers. Likethe document, the XPath context need to be freed explicitly,
-also not thatthe result of the XPath query may point back to the document
-tree and hencethe document must be freed after the result of the query is
-used.</p><h3>xpathext.py:</h3><p>This test shows how to extend the XPath engine with functions written
-inpython:</p><pre>import libxml2
+ctxt.xpathFreeContext()</pre><p>This test parses a file, then create an XPath context to
+evaluateXPathexpression on it. The xpathEval() method execute an XPath query
+andreturnsthe result mapped in a Python way. String and numbers are
+nativelyconverted,and node sets are returned as a tuple of libxml2 Python
+nodeswrappers. Likethe document, the XPath context need to be freed
+explicitly,also not thatthe result of the XPath query may point back to the
+documenttree and hencethe document must be freed after the result of the
+query isused.</p><h3>xpathext.py:</h3><p>This test shows how to extend the XPath engine with functions
+writteninpython:</p><pre>import libxml2
def foo(ctx, x):
return x + 1
@@ -225,9 +224,10 @@
if res != 2:
print "xpath extension failure"
doc.freeDoc()
-ctxt.xpathFreeContext()</pre><p>Note how the extension function is registered with the context (but
-thatpart is not yet finalized, this may change slightly in the future).</p><h3>tstxpath.py:</h3><p>This test is similar to the previous one but shows how the
-extensionfunction can access the XPath evaluation context:</p><pre>def foo(ctx, x):
+ctxt.xpathFreeContext()</pre><p>Note how the extension function is registered with the context
+(butthatpart is not yet finalized, this may change slightly in the
+future).</p><h3>tstxpath.py:</h3><p>This test is similar to the previous one but shows how
+theextensionfunction can access the XPath evaluation context:</p><pre>def foo(ctx, x):
global called
#
@@ -236,16 +236,16 @@
pctxt = libxml2.xpathParserContext(_obj=ctx)
ctxt = pctxt.context()
called = ctxt.function()
- return x + 1</pre><p>All the interfaces around the XPath parser(or rather evaluation)
-contextare not finalized, but it should be sufficient to do contextual work
-at theevaluation point.</p><h3>Memory debugging:</h3><p>last but not least, all tests starts with the following prologue:</p><pre>#memory debug specific
+ return x + 1</pre><p>All the interfaces around the XPath parser(or rather evaluation)contextare
+not finalized, but it should be sufficient to do contextual workat
+theevaluation point.</p><h3>Memory debugging:</h3><p>last but not least, all tests starts with the following prologue:</p><pre>#memory debug specific
libxml2.debugMemory(1)</pre><p>and ends with the following epilogue:</p><pre>#memory debug specific
libxml2.cleanupParser()
if libxml2.debugMemory(1) == 0:
print "OK"
else:
print "Memory leak %d bytes" % (libxml2.debugMemory(1))
- libxml2.dumpMemory()</pre><p>Those activate the memory debugging interface of libxml2 where
-allallocated block in the library are tracked. The prologue then cleans up
-thelibrary state and checks that all allocated memory has been freed. If not
-itcalls dumpMemory() which saves that list in a <code>.memdump</code>file.</p><p><a href="bugs.html">Daniel Veillard</a></p></td></tr></table></td></tr></table></td></tr></table></td></tr></table></td></tr></table></body></html>
+ libxml2.dumpMemory()</pre><p>Those activate the memory debugging interface of libxml2 whereallallocated
+block in the library are tracked. The prologue then cleans upthelibrary state
+and checks that all allocated memory has been freed. If notitcalls
+dumpMemory() which saves that list in a <code>.memdump</code>file.</p><p><a href="bugs.html">Daniel Veillard</a></p></td></tr></table></td></tr></table></td></tr></table></td></tr></table></td></tr></table></body></html>