mirror of
https://github.com/cookiengineer/audacity
synced 2025-06-15 07:40:23 +02:00
131 lines
5.8 KiB
XML
131 lines
5.8 KiB
XML
<?xml version="1.0" encoding="iso-8859-1"?>
|
|
<!DOCTYPE refentry PUBLIC "-//OASIS//DTD DocBook XML V4.3//EN"
|
|
"http://www.oasis-open.org/docbook/xml/4.3/docbookx.dtd" [
|
|
<!ENTITY version SYSTEM "version.xml">
|
|
]>
|
|
<refentry id="redland-heuristics">
|
|
<refmeta>
|
|
<refentrytitle role="top_of_page" id="redland-heuristics.top_of_page">Heuristics</refentrytitle>
|
|
<manvolnum>3</manvolnum>
|
|
<refmiscinfo>REDLAND Library</refmiscinfo>
|
|
</refmeta>
|
|
|
|
<refnamediv>
|
|
<refname>Heuristics</refname>
|
|
<refpurpose>Utility heuristic functions.</refpurpose>
|
|
<!--[<xref linkend="desc" endterm="desc.title"/>]-->
|
|
</refnamediv>
|
|
|
|
<refsynopsisdiv id="redland-heuristics.synopsis" role="synopsis">
|
|
<title role="synopsis.title">Synopsis</title>
|
|
|
|
<synopsis>
|
|
<link linkend="char">char</link>* <link linkend="librdf-heuristic-gen-name">librdf_heuristic_gen_name</link> (const <link linkend="char">char</link> *name);
|
|
<link linkend="int">int</link> <link linkend="librdf-heuristic-is-blank-node">librdf_heuristic_is_blank_node</link> (const <link linkend="char">char</link> *node);
|
|
const <link linkend="char">char</link>* <link linkend="librdf-heuristic-get-blank-node">librdf_heuristic_get_blank_node</link> (const <link linkend="char">char</link> *node);
|
|
<link linkend="int">int</link> <link linkend="librdf-heuristic-object-is-literal">librdf_heuristic_object_is_literal</link> (const <link linkend="char">char</link> *object);
|
|
</synopsis>
|
|
</refsynopsisdiv>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
<refsect1 id="redland-heuristics.description" role="desc">
|
|
<title role="desc.title">Description</title>
|
|
<para>
|
|
Various utility functions for performing heuristics such as
|
|
generating a name, guessing if a string is a URI or RDF literal.
|
|
</para>
|
|
</refsect1>
|
|
|
|
<refsect1 id="redland-heuristics.details" role="details">
|
|
<title role="details.title">Details</title>
|
|
<refsect2 id="librdf-heuristic-gen-name" role="function">
|
|
<title>librdf_heuristic_gen_name ()</title>
|
|
<indexterm zone="librdf-heuristic-gen-name"><primary>librdf_heuristic_gen_name</primary></indexterm><programlisting><link linkend="char">char</link>* librdf_heuristic_gen_name (const <link linkend="char">char</link> *name);</programlisting>
|
|
<para>
|
|
Generate a new name from an existing name.
|
|
</para>
|
|
<para>
|
|
Adds an integer or increases the integer at the end of the name
|
|
in order to generate a new one</para>
|
|
<para>
|
|
|
|
</para><variablelist role="params">
|
|
<varlistentry><term><parameter>name</parameter> :</term>
|
|
<listitem><simpara> the name
|
|
</simpara></listitem></varlistentry>
|
|
<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> a new name or NULL on failure
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist></refsect2>
|
|
<refsect2 id="librdf-heuristic-is-blank-node" role="function">
|
|
<title>librdf_heuristic_is_blank_node ()</title>
|
|
<indexterm zone="librdf-heuristic-is-blank-node"><primary>librdf_heuristic_is_blank_node</primary></indexterm><programlisting><link linkend="int">int</link> librdf_heuristic_is_blank_node (const <link linkend="char">char</link> *node);</programlisting>
|
|
<para>
|
|
Try to guess if an node string is a blank node identifier.
|
|
</para>
|
|
<para>
|
|
The guessing is done by assuming the object is a blank node if it matches
|
|
^_: like N-Triples, N3 and related.</para>
|
|
<para>
|
|
|
|
</para><variablelist role="params">
|
|
<varlistentry><term><parameter>node</parameter> :</term>
|
|
<listitem><simpara> string object to guess type
|
|
</simpara></listitem></varlistentry>
|
|
<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> non 0 if node is probably a blank node identifier
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist></refsect2>
|
|
<refsect2 id="librdf-heuristic-get-blank-node" role="function">
|
|
<title>librdf_heuristic_get_blank_node ()</title>
|
|
<indexterm zone="librdf-heuristic-get-blank-node"><primary>librdf_heuristic_get_blank_node</primary></indexterm><programlisting>const <link linkend="char">char</link>* librdf_heuristic_get_blank_node (const <link linkend="char">char</link> *node);</programlisting>
|
|
<para>
|
|
Get a blank node identifier from a node string.
|
|
</para>
|
|
<para>
|
|
Picks the blank node identifier out of a string. Looks for things
|
|
like _:ABC</para>
|
|
<para>
|
|
|
|
</para><variablelist role="params">
|
|
<varlistentry><term><parameter>node</parameter> :</term>
|
|
<listitem><simpara> string object to guess type
|
|
</simpara></listitem></varlistentry>
|
|
<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> the blank node identifer string or NULL if the node does not seem to be a blank node identifier
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist></refsect2>
|
|
<refsect2 id="librdf-heuristic-object-is-literal" role="function">
|
|
<title>librdf_heuristic_object_is_literal ()</title>
|
|
<indexterm zone="librdf-heuristic-object-is-literal"><primary>librdf_heuristic_object_is_literal</primary></indexterm><programlisting><link linkend="int">int</link> librdf_heuristic_object_is_literal (const <link linkend="char">char</link> *object);</programlisting>
|
|
<para>
|
|
Try to guess if an object string is a literal or a resource.
|
|
</para>
|
|
<para>
|
|
The guessing is done by assuming the object is a URL if it matches
|
|
^[<link linkend="isalnum"><function>isalnum()</function></link>]+:[^<link linkend="isblank"><function>isblank()</function></link>]+$
|
|
</para>
|
|
<para>
|
|
This will be fooled by literals of form 'thing:non-blank-thing' but
|
|
is good enough.</para>
|
|
<para>
|
|
|
|
</para><variablelist role="params">
|
|
<varlistentry><term><parameter>object</parameter> :</term>
|
|
<listitem><simpara> string object to guess type
|
|
</simpara></listitem></varlistentry>
|
|
<varlistentry><term><emphasis>Returns</emphasis> :</term><listitem><simpara> non 0 if object is probably a literal
|
|
</simpara></listitem></varlistentry>
|
|
</variablelist></refsect2>
|
|
|
|
</refsect1>
|
|
|
|
|
|
|
|
|
|
</refentry>
|