<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Sequence</title> <meta name="generator" content="DocBook XSL Stylesheets V1.73.2"> <link rel="start" href="index.html" title="Raptor RDF Syntax Parsing and Serializing Library Manual"> <link rel="up" href="reference-manual.html" title="Part II. Raptor Reference Manual"> <link rel="prev" href="raptor-section-sax2.html" title="SAX2"> <link rel="next" href="raptor-section-serializer.html" title="Serializer"> <meta name="generator" content="GTK-Doc V1.10 (XML mode)"> <link rel="stylesheet" href="style.css" type="text/css"> <link rel="chapter" href="introduction.html" title="Raptor Overview"> <link rel="part" href="tutorial.html" title="Part I. 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<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a>* <a class="link" href="raptor-section-sequence.html#raptor-new-sequence" title="raptor_new_sequence ()">raptor_new_sequence</a> (raptor_sequence_free_handler *free_handler, raptor_sequence_print_handler *print_handler); void <a class="link" href="raptor-section-sequence.html#raptor-free-sequence" title="raptor_free_sequence ()">raptor_free_sequence</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq); void* <a class="link" href="raptor-section-sequence.html#raptor-sequence-delete-at" title="raptor_sequence_delete_at ()">raptor_sequence_delete_at</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, int idx); int <a class="link" href="raptor-section-sequence.html#raptor-sequence-size" title="raptor_sequence_size ()">raptor_sequence_size</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq); int <a class="link" href="raptor-section-sequence.html#raptor-sequence-set-at" title="raptor_sequence_set_at ()">raptor_sequence_set_at</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, int idx, void *data); int <a class="link" href="raptor-section-sequence.html#raptor-sequence-push" title="raptor_sequence_push ()">raptor_sequence_push</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, void *data); int <a class="link" href="raptor-section-sequence.html#raptor-sequence-shift" title="raptor_sequence_shift ()">raptor_sequence_shift</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, void *data); void* <a class="link" href="raptor-section-sequence.html#raptor-sequence-get-at" title="raptor_sequence_get_at ()">raptor_sequence_get_at</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, int idx); void* <a class="link" href="raptor-section-sequence.html#raptor-sequence-pop" title="raptor_sequence_pop ()">raptor_sequence_pop</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq); void* <a class="link" href="raptor-section-sequence.html#raptor-sequence-unshift" title="raptor_sequence_unshift ()">raptor_sequence_unshift</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq); int <a class="link" href="raptor-section-sequence.html#raptor-compare-strings" title="raptor_compare_strings ()">raptor_compare_strings</a> (const void *a, const void *b); void <a class="link" href="raptor-section-sequence.html#raptor-sequence-sort" title="raptor_sequence_sort ()">raptor_sequence_sort</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, int (compareconst void *, const void *) ()); void <a class="link" href="raptor-section-sequence.html#raptor-sequence-print-string" title="raptor_sequence_print_string ()">raptor_sequence_print_string</a> (char *data, FILE *fh); void <a class="link" href="raptor-section-sequence.html#raptor-sequence-print-uri" title="raptor_sequence_print_uri ()">raptor_sequence_print_uri</a> (char *data, FILE *fh); void <a class="link" href="raptor-section-sequence.html#raptor-sequence-set-print-handler" title="raptor_sequence_set_print_handler ()">raptor_sequence_set_print_handler</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, raptor_sequence_print_handler *print_handler); void <a class="link" href="raptor-section-sequence.html#raptor-sequence-print" title="raptor_sequence_print ()">raptor_sequence_print</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, FILE *fh); int <a class="link" href="raptor-section-sequence.html#raptor-sequence-join" title="raptor_sequence_join ()">raptor_sequence_join</a> (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *dest, <a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *src); </pre> </div> <div class="refsect1" lang="en"> <a name="raptor-section-sequence.description"></a><h2>Description</h2> <p> A utility class that provides access to small sequence of items that grow at the end and require quick ordered and indexed access. Can be used as a queue/FIFO but less efficiently than a stack where the items are added and removed from the end. </p> </div> <div class="refsect1" lang="en"> <a name="raptor-section-sequence.details"></a><h2>Details</h2> <div class="refsect2" lang="en"> <a name="raptor-sequence"></a><h3>raptor_sequence</h3> <pre class="programlisting">raptor_sequence* raptor_sequence; </pre> <p> Raptor sequence class</p> <p> </p> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-new-sequence"></a><h3>raptor_new_sequence ()</h3> <pre class="programlisting"><a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a>* raptor_new_sequence (raptor_sequence_free_handler *free_handler, raptor_sequence_print_handler *print_handler);</pre> <p> Constructor - create a new sequence with the given handlers.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>free_handler</code></em> :</span></p></td> <td> handler to free a sequence item </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>print_handler</code></em> :</span></p></td> <td> handler to print a sequence item to a FILE* </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> a new <a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence"><span class="type">raptor_sequence</span></a> or NULL on failure </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-free-sequence"></a><h3>raptor_free_sequence ()</h3> <pre class="programlisting">void raptor_free_sequence (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq);</pre> <p> Destructor - free a <a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence"><span class="type">raptor_sequence</span></a></p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody><tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence to destroy </td> </tr></tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-delete-at"></a><h3>raptor_sequence_delete_at ()</h3> <pre class="programlisting">void* raptor_sequence_delete_at (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, int idx);</pre> <p> Remove an item from a position a sequence, returning it </p> <p> The item at the offset <em class="parameter"><code>idx</code></em> in the sequence is replaced with a NULL pointer and any existing item is returned. The caller owns the resulting item.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence object </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>idx</code></em> :</span></p></td> <td> index into sequence to operate at </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> NULL on failure </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-size"></a><h3>raptor_sequence_size ()</h3> <pre class="programlisting">int raptor_sequence_size (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq);</pre> <p> Get the number of items in a sequence.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence object </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> the sequence size (>=0) </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-set-at"></a><h3>raptor_sequence_set_at ()</h3> <pre class="programlisting">int raptor_sequence_set_at (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, int idx, void *data);</pre> <p> Replace/set an item in a sequence. </p> <p> The item at the offset <em class="parameter"><code>idx</code></em> in the sequence is replaced with the new item <em class="parameter"><code>data</code></em> (which may be NULL). Any existing item is freed with the sequence's free_handler. If necessary the sequence is extended (with NULLs) to handle a larger offset. </p> <p> The sequence takes ownership of the new data item. On failure, the item is freed immediately.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence object </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>idx</code></em> :</span></p></td> <td> index into sequence to operate at </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td> <td> new data item. </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> non-0 on failure </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-push"></a><h3>raptor_sequence_push ()</h3> <pre class="programlisting">int raptor_sequence_push (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, void *data);</pre> <p> Add an item to the end of the sequence. </p> <p> The sequence takes ownership of the pushed item and frees it with the free_handler. On failure, the item is freed immediately.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence to add to </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td> <td> item to add </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> non-0 on failure </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-shift"></a><h3>raptor_sequence_shift ()</h3> <pre class="programlisting">int raptor_sequence_shift (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, void *data);</pre> <p> Add an item to the start of the sequence. </p> <p> The sequence takes ownership of the shifted item and frees it with the free_handler. On failure, the item is freed immediately.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence to add to </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td> <td> item to add </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> non-0 on failure </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-get-at"></a><h3>raptor_sequence_get_at ()</h3> <pre class="programlisting">void* raptor_sequence_get_at (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, int idx);</pre> <p> Retrieve an item at offset <em class="parameter"><code>index</code></em> in the sequence. </p> <p> This is efficient to perform. <a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence"><span class="type">raptor_sequence</span></a> is optimised to append/remove from the end of the sequence. </p> <p> After this call the item is still owned by the sequence.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence to use </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>idx</code></em> :</span></p></td> <td> index of item to get </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> the object or NULL if <em class="parameter"><code>index</code></em> is out of range (0... sequence size-1) </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-pop"></a><h3>raptor_sequence_pop ()</h3> <pre class="programlisting">void* raptor_sequence_pop (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq);</pre> <p> Retrieve the item at the end of the sequence. </p> <p> Ownership of the item is transferred to the caller, i.e. caller is responsible of freeing the item.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence to use </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> the object or NULL if the sequence is empty </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-unshift"></a><h3>raptor_sequence_unshift ()</h3> <pre class="programlisting">void* raptor_sequence_unshift (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq);</pre> <p> Retrieve the item at the start of the sequence. </p> <p> Ownership of the item is transferred to the caller, i.e. caller is responsible of freeing the item.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence to use </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> the object or NULL if the sequence is empty </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-compare-strings"></a><h3>raptor_compare_strings ()</h3> <pre class="programlisting">int raptor_compare_strings (const void *a, const void *b);</pre> <p> Utility function for <a class="link" href="raptor-section-sequence.html#raptor-sequence-sort" title="raptor_sequence_sort ()"><code class="function">raptor_sequence_sort()</code></a> to compare a sequence of strings.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>a</code></em> :</span></p></td> <td> pointer first string </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>b</code></em> :</span></p></td> <td> pointer to second string </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> comparison of <em class="parameter"><code>a</code></em> to <em class="parameter"><code>b</code></em> as strings </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-sort"></a><h3>raptor_sequence_sort ()</h3> <pre class="programlisting">void raptor_sequence_sort (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, int (compareconst void *, const void *) ());</pre> <p> The comparison function is compatible with that used for <code class="function">qsort()</code> and provides the addresses of pointers to the data that must be dereferenced to get to the stored sequence data.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence to sort </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>compare</code></em> :</span></p></td> <td> comparison function </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-print-string"></a><h3>raptor_sequence_print_string ()</h3> <pre class="programlisting">void raptor_sequence_print_string (char *data, FILE *fh);</pre> <p> Helper function for printing a sequence of strings. </p> <p> Intended for use as a <span class="type">raptor_sequence_print_handler</span> passed into <a class="link" href="raptor-section-sequence.html#raptor-new-sequence" title="raptor_new_sequence ()"><code class="function">raptor_new_sequence()</code></a>.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td> <td> data item (a char*) </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>fh</code></em> :</span></p></td> <td> file handle to print to </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-print-uri"></a><h3>raptor_sequence_print_uri ()</h3> <pre class="programlisting">void raptor_sequence_print_uri (char *data, FILE *fh);</pre> <p> Helper function for printing a sequence of URIs. </p> <p> Intended for use as a <span class="type">raptor_sequence_print_handler</span> passed into <a class="link" href="raptor-section-sequence.html#raptor-new-sequence" title="raptor_new_sequence ()"><code class="function">raptor_new_sequence()</code></a>.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>data</code></em> :</span></p></td> <td> data item (a <a class="link" href="raptor-section-uri.html#raptor-uri" title="raptor_uri"><span class="type">raptor_uri</span></a>) </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>fh</code></em> :</span></p></td> <td> file handle to print to </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-set-print-handler"></a><h3>raptor_sequence_set_print_handler ()</h3> <pre class="programlisting">void raptor_sequence_set_print_handler (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, raptor_sequence_print_handler *print_handler);</pre> <p> Set the print handler for the sequence. </p> <p> This is set in the <a class="link" href="raptor-section-sequence.html#raptor-new-sequence" title="raptor_new_sequence ()"><code class="function">raptor_new_sequence()</code></a> constructor and can be overridden here.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>print_handler</code></em> :</span></p></td> <td> print handler </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-print"></a><h3>raptor_sequence_print ()</h3> <pre class="programlisting">void raptor_sequence_print (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *seq, FILE *fh);</pre> <p> Print the sequence contents using the print_handler to print the data items.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>seq</code></em> :</span></p></td> <td> sequence to sort </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>fh</code></em> :</span></p></td> <td> file handle </td> </tr> </tbody> </table></div> </div> <hr> <div class="refsect2" lang="en"> <a name="raptor-sequence-join"></a><h3>raptor_sequence_join ()</h3> <pre class="programlisting">int raptor_sequence_join (<a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *dest, <a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence">raptor_sequence</a> *src);</pre> <p> Join two sequences moving all items from one sequence to the end of another. </p> <p> After this operation, sequence src will be empty (zero size) but will have the same item capacity as before.</p> <p> </p> <div class="variablelist"><table border="0"> <col align="left" valign="top"> <tbody> <tr> <td><p><span class="term"><em class="parameter"><code>dest</code></em> :</span></p></td> <td> <a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence"><span class="type">raptor_sequence</span></a> destination sequence </td> </tr> <tr> <td><p><span class="term"><em class="parameter"><code>src</code></em> :</span></p></td> <td> <a class="link" href="raptor-section-sequence.html#raptor-sequence" title="raptor_sequence"><span class="type">raptor_sequence</span></a> source sequence </td> </tr> <tr> <td><p><span class="term"><span class="emphasis"><em>Returns</em></span> :</span></p></td> <td> non-0 on failure </td> </tr> </tbody> </table></div> </div> </div> </div> <div class="footer"> <hr> Generated by GTK-Doc V1.10</div> </body> </html>