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   6           cxml-rng: Relax NG for Closure XML
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  11 <div id="header"><div style="margin-left: 15px"><b><span>cxml–</span><span style="color: #ff9500">rng</span>
  12
  13           Relax NG for Closure XML
  14         </b></div></div>
  15 <div id="homepage" class="main">
  16   <p>
  17     An implementation
  18     of <a href="http://relaxng.org/spec-20011203.html">Relax
  19       NG</a> schema validation
  20     written in Common
  21     Lisp, including support for compact syntax, DTD Compatibility, and
  22     the XSD type library.
  23   </p>
  24   <p>
  25     cxml-rng was written
  26     by <a href="mailto:david@lichteblau.com">David
  27       Lichteblau</a> and is designed as an add-on library for
  28     <a href="http://common-lisp.net/project/cxml">Closure XML</a>.
  29     It is available under an X11-style license.
  30   </p>
  31   <p>
  32     Please send bug reports
  33     to <a href="mailto:cxml-devel@common-lisp.net">
  34       cxml-devel@common-lisp.net</a>
  35     (<a href="http://common-lisp.net/cgi-bin/mailman/listinfo/cxml-devel">list information</a>).
  36   </p>
  37
  38   <h3>Download and Installation</h3>
  39
  40 <!--
  41   <p>
  42     Download cxml-rng
  43     <a href="http://www.lichteblau.com/cxml-rng/download/">tarballs</a>
  44     or get it from git: <tt>http://www.lichteblau.com/git/cxml-rng.git</tt>
  45   </p>
  46 -->
  47   <p>
  48     Download a cxml-rng
  49     <a href="http://www.lichteblau.com/cxml-rng/download/">tarball</a>.
  50   </p>
  51   <p>
  52     cxml-rng needs
  53     <a href="http://common-lisp.net/project/cxml">Closure XML</a>,
  54     <a href="http://weitz.de/cl-ppcre/">CL-PPCE</a>,
  55     <a href="http://www.pps.jussieu.fr/~jch/software/cl-yacc/">CL-Yacc</a>,
  56     <a href="http://www.cliki.net/PARSE-NUMBER">parse-number</a>,
  57     and <a href="http://www.cliki.net/cl-base64">cl-base64</a>.
  58     <a href="http://www.cliki.net/asdf">ASDF</a> is used for
  59     compilation.  Register the .asd file, e.g. by symlinking it,
  60     then compile cxml-rng using <tt>asdf:operate</tt>.
  61   </p>
  62   <pre>$ ln -sf `pwd`/cxml-rng.asd /path/to/your/registry/
  63 * (asdf:operate 'asdf:load-op :cxml-rng)</pre>
  64
  65   <h3>Implementation-specific notes</h3>
  66   <p>
  67     At this point, cxml-rng is written to work with Lisp strings
  68     (as opposed to runes and rods), and is meant to be used on
  69     Lisp implementations with Unicode support.
  70   </p>
  71
  72   <h3>Documentation</h3>
  73   <p>
  74     <a href="doc/index.html">API documentation</a> is available.
  75   </p>
  76
  77   <h3>Example</h3>
  78   <p>
  79     Use <a href="doc/pages/cxml-rng__parse-schema.html">cxml-rng:parse-schema</a>
  80     to parse a Relax NG schema file.  The
  81     resulting <a href="doc/pages/cxml-rng__schema.html">schema</a>
  82     object is a representation of a simplified schema using Lisp
  83     objects, which has gone through simplification as
  84     described the Relax NG
  85     specification.  <a href="doc/pages/cxml-rng__serialize-schema.html">cxml-rng:serialize-schema</a>
  86     can be used to write a Relax NG file in XML syntax for this
  87     grammar.
  88   </p>
  89   <p>
  90     In order to validate XML against a schema, create a
  91     validation handler for the grammar
  92     using <a href="doc/pages/cxml-rng__make-validator.html">cxml-rng:make-validator</a>.
  93     The validation
  94     handler processes SAX events and can be used with any
  95     function generating such events, in particular
  96     with <a href="http://common-lisp.net/project/cxml/sax.html#parser">cxml:parse-file</a>.
  97   </p>
  98   <pre class="code">(cxml:parse-file "example.xml"
  99                  <span style="color: black">(cxml-rng:make-validator
 100                   (cxml-rng:parse-schema #p"example.rng"))</span>)</pre>
 101   <p>
 102     The validator accepts another SAX handler as an optional
 103     second argument.  For example, to parse XML into DOM while also
 104     validating it, use the validator like this:
 105   </p>
 106   <pre class="code" style="color: #777777">(cxml:parse-file "example.xml"
 107                  <span style="color: black">(cxml-rng:make-validator</span>
 108                   (cxml-rng:parse-schema #p"example.rng")
 109                   <span style="color: black">(cxml-dom:make-dom-builder))</span>)</pre>
 110   <p>
 111     When using the klacks parser, create a validating source.
 112   </p>
 113   <pre class="code" style="color: #777777">(klacks:with-open-source
 114     (s <span style="color: black">(cxml-rng:make-validating-source
 115         #p"example.xml"
 116         (cxml-rng:parse-schema #p"example.rng"))</span>)
 117   (loop for key = (klacks:peek-next s) while key do (print key)))</pre>
 118   <p>
 119     DTD Compatibility processing (basically, checking of IDs and
 120     addition of default values) is done using a
 121     <a href="doc/pages/cxml-rng__make-dtd-compatibility-handler.html">DTD Compatibility handler</a>.
 122     You can use this handler together with a validator or by its own.
 123   </p>
 124   <pre class="code" style="color: #777777">(cxml:parse-file "example.xml"
 125                  <span style="color: black">(cxml-rng:make-dtd-compatibility-handler</span>
 126                   (cxml-rng:parse-schema #p"example.rng")
 127                   <span style="color: black">(cxml-dom:make-dom-builder))</span>)</pre>
 128
 129   <h3>Recent changes</h3>
 130   <p><b>2008-11-30</b></p>
 131   <ul>
 132     <li>
 133       Build fix: Upgraded to current cl-ppcre.
 134     </li>
 135     <li>
 136       Use 21 bit characters on Lisps offering them.
 137       (Also fixes OpenMCL issues.)
 138     </li>
 139   </ul>
 140   <p><b>2007-10-21</b></p>
 141   <ul>
 142     <li>
 143       Slightly better error messages around attribute issues.
 144     </li>
 145     <li>
 146       Update to current CXML.
 147     </li>
 148   </ul>
 149   <p><b>2007-07-01</b></p>
 150   <ul>
 151     <li>
 152       Allows comments in grammar contents.
 153     </li>
 154   </ul>
 155   <p><b>2007-05-26</b></p>
 156   <ul>
 157     <li>
 158       Initial public release.
 159     </li>
 160   </ul>
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