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<div id="projectname">Ruby
 <span id="projectnumber">1.9.3p551(2014-11-13revision48407)</span>
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<div class="title">strstr.c</div> </div>
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<a href="../../d3/d29/strstr_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/* public domain rewrite of strstr(3) */</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="preprocessor">#include "<a class="code" href="../../d3/d90/missing_8h.html">ruby/missing.h</a>"</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> </div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="keywordtype">size_t</span> <a class="code" href="../../d6/d7b/strchr_8c.html#a219836f542ce53545052bed5353820ca">strlen</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>*);</div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="keywordtype">char</span> *</div>
<div class="line"><a name="l00008"></a><span class="lineno"><a class="line" href="../../d3/d29/strstr_8c.html#a4a710d86541afc6b7dafddcdb4b1c94f"> 8</a></span> <a class="code" href="../../d3/d90/missing_8h.html#a695026fc69840c65da7ea58226006f69">strstr</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *haystack, <span class="keyword">const</span> <span class="keywordtype">char</span> *needle)</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> {</div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *hend;</div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="../../de/d07/bigdecimal_8c.html#a79369678b02205f099123dc0501f915f">a</a>, *<a class="code" href="../../de/d07/bigdecimal_8c.html#af5857437ff0274b5a927afe95f104a39">b</a>;</div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> </div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>  <span class="keywordflow">if</span> (*needle == 0) <span class="keywordflow">return</span> (<span class="keywordtype">char</span> *)haystack;</div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>  hend = haystack + <a class="code" href="../../d6/d7b/strchr_8c.html#a219836f542ce53545052bed5353820ca">strlen</a>(haystack) - <a class="code" href="../../d6/d7b/strchr_8c.html#a219836f542ce53545052bed5353820ca">strlen</a>(needle) + 1;</div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>  <span class="keywordflow">while</span> (haystack < hend) {</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>  <span class="keywordflow">if</span> (*haystack == *needle) {</div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>  a = haystack;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>  b = needle;</div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>  <span class="keywordflow">for</span> (;;) {</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keywordflow">if</span> (*b == 0) <span class="keywordflow">return</span> (<span class="keywordtype">char</span> *)haystack;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keywordflow">if</span> (*a++ != *b++) {</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  }</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  }</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  }</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  haystack++;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  }</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> }</div>
<div class="ttc" id="strchr_8c_html_a219836f542ce53545052bed5353820ca"><div class="ttname"><a href="../../d6/d7b/strchr_8c.html#a219836f542ce53545052bed5353820ca">strlen</a></div><div class="ttdeci">size_t strlen(const char *)</div></div>
<div class="ttc" id="missing_8h_html"><div class="ttname"><a href="../../d3/d90/missing_8h.html">missing.h</a></div></div>
<div class="ttc" id="bigdecimal_8c_html_af5857437ff0274b5a927afe95f104a39"><div class="ttname"><a href="../../de/d07/bigdecimal_8c.html#af5857437ff0274b5a927afe95f104a39">b</a></div><div class="ttdeci">Real * b</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d07/bigdecimal_8c_source.html#l01140">bigdecimal.c:1140</a></div></div>
<div class="ttc" id="missing_8h_html_a695026fc69840c65da7ea58226006f69"><div class="ttname"><a href="../../d3/d90/missing_8h.html#a695026fc69840c65da7ea58226006f69">strstr</a></div><div class="ttdeci">RUBY_EXTERN char * strstr(const char *, const char *)</div><div class="ttdef"><b>Definition:</b> <a href="../../d3/d29/strstr_8c_source.html#l00008">strstr.c:8</a></div></div>
<div class="ttc" id="bigdecimal_8c_html_a79369678b02205f099123dc0501f915f"><div class="ttname"><a href="../../de/d07/bigdecimal_8c.html#a79369678b02205f099123dc0501f915f">a</a></div><div class="ttdeci">Real * a</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d07/bigdecimal_8c_source.html#l01140">bigdecimal.c:1140</a></div></div>
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