<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <title>Open SCAP Library: Iterators & collections</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <link href="doxygen.css" rel="stylesheet" type="text/css"/> </head> <body> <!-- Generated by Doxygen 1.6.1 --> <div class="navigation" id="top"> <div class="tabs"> <ul> <li><a href="index.html"><span>Main Page</span></a></li> <li><a href="pages.html"><span>Related Pages</span></a></li> <li><a href="modules.html"><span>Modules</span></a></li> <li><a href="annotated.html"><span>Data Structures</span></a></li> <li><a href="files.html"><span>Files</span></a></li> </ul> </div> </div> <div class="contents"> <h1>Iterators & collections<br/> <small> [<a class="el" href="group__COMMON.html">COMMON</a>]</small> </h1> <p>OpenScap iterators concept. <a href="#_details">More...</a></p> <table border="0" cellpadding="0" cellspacing="0"> <tr><td colspan="2"><h2>Defines</h2></td></tr> <tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ITER.html#gaea98dedf8ff9418609496bb11ff8c66c">OSCAP_FOREACH_GENERIC</a>(itype, vtype, val, init_val, code)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Iterate over an array, given an iterator. <a href="#gaea98dedf8ff9418609496bb11ff8c66c"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ITER.html#ga252a13d8be22bb101a8732987eb4e828">OSCAP_FOREACH</a>(type, val, init_val, code) OSCAP_FOREACH_GENERIC(type, struct type *, val, init_val, code)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Iterate over an array, given an iterator. <a href="#ga252a13d8be22bb101a8732987eb4e828"></a><br/></td></tr> <tr><td class="memItemLeft" align="right" valign="top">#define </td><td class="memItemRight" valign="bottom"><a class="el" href="group__ITER.html#gafdd9cc9b1ae693c07dd4ff9727cfb019">OSCAP_FOREACH_STR</a>(val, init_val, code) OSCAP_FOREACH_GENERIC(oscap_string, const char *, val, init_val, code)</td></tr> <tr><td class="mdescLeft"> </td><td class="mdescRight">Iterate over an array of strings, given an iterator. <a href="#gafdd9cc9b1ae693c07dd4ff9727cfb019"></a><br/></td></tr> </table> <hr/><a name="_details"></a><h2>Detailed Description</h2> <p>OpenScap iterators concept. </p> <p>Any iterator name takes a form of <code>struct OBJECT_iterator</code>, where <code>OBJECT</code> is a name of particular datatype the iterator iterates over.</p> <p>Each iterator type defines several manipulation functions, namely:</p> <ul> <li><code>OBJECT_iterator_has_more</code> - returns true if there is anything left to iterate over</li> <li><code>OBJECT_iterator_next</code> - returns next item in the collection</li> <li><code>OBJECT_iterator_free</code> - destroys the iterator</li> </ul> <p>You can also use <a class="el" href="group__ITER.html#ga252a13d8be22bb101a8732987eb4e828">OSCAP_FOREACH</a> convience macro. </p> <hr/><h2>Define Documentation</h2> <a class="anchor" id="ga252a13d8be22bb101a8732987eb4e828"></a><!-- doxytag: member="oscap.h::OSCAP_FOREACH" ref="ga252a13d8be22bb101a8732987eb4e828" args="(type, val, init_val, code)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define OSCAP_FOREACH</td> <td>(</td> <td class="paramtype">type, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">val, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">init_val, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">code </td> <td class="paramname"></td> <td> ) </td> <td> OSCAP_FOREACH_GENERIC(type, struct type *, val, init_val, code)</td> </tr> </table> </div> <div class="memdoc"> <p>Iterate over an array, given an iterator. </p> <dl><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>type</em> </td><td>type of array elements (w/o the struct keyword) </td></tr> <tr><td valign="top"></td><td valign="top"><em>val</em> </td><td>name of an variable the member will be sequentially stored in </td></tr> <tr><td valign="top"></td><td valign="top"><em>init_val</em> </td><td>initial member value (i.e. an iterator pointing to the start element) </td></tr> <tr><td valign="top"></td><td valign="top"><em>code</em> </td><td>code to be executed for each element the iterator hits </td></tr> </table> </dd> </dl> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group__ITER.html#gaea98dedf8ff9418609496bb11ff8c66c" title="Iterate over an array, given an iterator.">OSCAP_FOREACH_GENERIC</a> </dd></dl> </div> </div> <a class="anchor" id="gaea98dedf8ff9418609496bb11ff8c66c"></a><!-- doxytag: member="oscap.h::OSCAP_FOREACH_GENERIC" ref="gaea98dedf8ff9418609496bb11ff8c66c" args="(itype, vtype, val, init_val, code)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define OSCAP_FOREACH_GENERIC</td> <td>(</td> <td class="paramtype">itype, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">vtype, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">val, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">init_val, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">code </td> <td class="paramname"></td> <td> ) </td> <td></td> </tr> </table> </div> <div class="memdoc"> <b>Value:</b><div class="fragment"><pre class="fragment">{ \ <span class="keyword">struct </span>itype##_iterator *val##_iter = (init_val); \ vtype val; \ <span class="keywordflow">while</span> (itype##_iterator_has_more(val##_iter)) { \ val = itype##_iterator_next(val##_iter); \ code \ } \ itype##_iterator_free(val##_iter); \ } </pre></div> <p>Iterate over an array, given an iterator. </p> <p>Execute <em>code</em> for each array member stored in <em>val</em>. </p> </div> </div> <a class="anchor" id="gafdd9cc9b1ae693c07dd4ff9727cfb019"></a><!-- doxytag: member="oscap.h::OSCAP_FOREACH_STR" ref="gafdd9cc9b1ae693c07dd4ff9727cfb019" args="(val, init_val, code)" --> <div class="memitem"> <div class="memproto"> <table class="memname"> <tr> <td class="memname">#define OSCAP_FOREACH_STR</td> <td>(</td> <td class="paramtype">val, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">init_val, </td> </tr> <tr> <td class="paramkey"></td> <td></td> <td class="paramtype">code </td> <td class="paramname"></td> <td> ) </td> <td> OSCAP_FOREACH_GENERIC(oscap_string, const char *, val, init_val, code)</td> </tr> </table> </div> <div class="memdoc"> <p>Iterate over an array of strings, given an iterator. </p> <dl><dt><b>Parameters:</b></dt><dd> <table border="0" cellspacing="2" cellpadding="0"> <tr><td valign="top"></td><td valign="top"><em>val</em> </td><td>name of an variable the string will be sequentially stored in </td></tr> <tr><td valign="top"></td><td valign="top"><em>init_val</em> </td><td>initial member value (i.e. an iterator pointing to the start element) </td></tr> <tr><td valign="top"></td><td valign="top"><em>code</em> </td><td>code to be executed for each string the iterator hits </td></tr> </table> </dd> </dl> <dl class="see"><dt><b>See also:</b></dt><dd><a class="el" href="group__ITER.html#gaea98dedf8ff9418609496bb11ff8c66c" title="Iterate over an array, given an iterator.">OSCAP_FOREACH_GENERIC</a> </dd></dl> </div> </div> </div> <hr size="1"/><address style="text-align: right;"><small>Generated on 26 Feb 2010 for Open SCAP Library by <a href="http://www.doxygen.org/index.html"> <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.6.1 </small></address> </body> </html>