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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">strlcat.c</div> </div>
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<a href="../../d5/de6/strlcat_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">/* $OpenBSD: strlcat.c,v 1.8 2001/05/13 15:40:15 deraadt Exp $ */</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="comment">/*</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * Copyright (c) 1998 Todd C. Miller <Todd.Miller@courtesan.com></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * modification, are permitted provided that the following conditions</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"> * are met:</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"> * notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * documentation and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * 3. The name of the author may not be used to endorse or promote products</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * derived from this software without specific prior written permission.</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment"> * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;</span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,</span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#if defined(LIBC_SCCS) && !defined(lint)</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor"></span><span class="keyword">static</span> <span class="keywordtype">char</span> *rcsid = <span class="stringliteral">"$OpenBSD: strlcat.c,v 1.8 2001/05/13 15:40:15 deraadt Exp $"</span>;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#endif </span><span class="comment">/* LIBC_SCCS and not lint */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</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="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <sys/types.h></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <string.h></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * Appends src to string dst of size siz (unlike strncat, siz is the</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * full size of dst, not space left). At most siz-1 characters</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * will be copied. Always NUL terminates (unless siz <= strlen(dst)).</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * Returns strlen(src) + MIN(siz, strlen(initial dst)).</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * If retval >= siz, truncation occurred.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <a class="code" href="../../d3/d90/missing_8h.html#aaf5a91beb98482ed8f426c921a4493a1">strlcat</a>(<a class="code" href="../../d5/d9d/tcltklib_8c.html#aa36638418f48fb2f8074a4fc4d425a8c">dst</a>, <a class="code" href="../../d5/d9d/tcltklib_8c.html#ad49d9d73467b0b43682b0847bfcf5570">src</a>, <a class="code" href="../../d5/de6/strlcat_8c.html#a3d11deb1ff109e839550a37edeb9ea4d">siz</a>)</div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="../../d5/de6/strlcat_8c.html#a23d05b5eca51d4863db717ce1096eedd"> 47</a></span>  char *<a class="code" href="../../d5/d9d/tcltklib_8c.html#aa36638418f48fb2f8074a4fc4d425a8c">dst</a>;</div>
<div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="../../d5/de6/strlcat_8c.html#af51e37c9331049b1e3d250a7c8bc3c26"> 48</a></span>  <a class="code" href="../../d8/d4e/strftime_8c.html#a2c212835823e3c54a8ab6d95c652660e">const</a> <span class="keywordtype">char</span> *<a class="code" href="../../d5/d9d/tcltklib_8c.html#ad49d9d73467b0b43682b0847bfcf5570">src</a>;</div>
<div class="line"><a name="l00049"></a><span class="lineno"><a class="line" href="../../d5/de6/strlcat_8c.html#a3d11deb1ff109e839550a37edeb9ea4d"> 49</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="../../d5/de6/strlcat_8c.html#a3d11deb1ff109e839550a37edeb9ea4d">siz</a>;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <span class="keyword">register</span> <span class="keywordtype">char</span> *<a class="code" href="../../d5/de6/strlcat_8c.html#a4baaf26ccdc71244db2410e8d4938e6a">d</a> = <a class="code" href="../../d5/d9d/tcltklib_8c.html#aa36638418f48fb2f8074a4fc4d425a8c">dst</a>;</div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="../../d5/de6/strlcat_8c.html#a58defbf6fe556592007171f7a347f9d6"> 52</a></span>  <span class="keyword">register</span> <span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="../../de/d46/os2_8c.html#a58defbf6fe556592007171f7a347f9d6">s</a> = <a class="code" href="../../d5/d9d/tcltklib_8c.html#ad49d9d73467b0b43682b0847bfcf5570">src</a>;</div>
<div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="../../d5/de6/strlcat_8c.html#aeab71244afb687f16d8c4f5ee9d6ef0e"> 53</a></span>  <span class="keyword">register</span> <span class="keywordtype">size_t</span> <a class="code" href="../../de/d07/bigdecimal_8c.html#aeab71244afb687f16d8c4f5ee9d6ef0e">n</a> = <a class="code" href="../../d5/de6/strlcat_8c.html#a3d11deb1ff109e839550a37edeb9ea4d">siz</a>;</div>
<div class="line"><a name="l00054"></a><span class="lineno"><a class="line" href="../../d5/de6/strlcat_8c.html#a5dd6ad99a2c765c7a96594c16d82aa23"> 54</a></span>  <span class="keywordtype">size_t</span> <a class="code" href="../../d5/de6/strlcat_8c.html#a5dd6ad99a2c765c7a96594c16d82aa23">dlen</a>;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="comment">/* Find the end of dst and adjust bytes left but don't go past end */</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keywordflow">while</span> (n-- != 0 && *d != <span class="charliteral">'\0'</span>)</div>
<div class="line"><a name="l00058"></a><span class="lineno"><a class="line" href="../../d5/de6/strlcat_8c.html#a4baaf26ccdc71244db2410e8d4938e6a"> 58</a></span>  d++;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  dlen = d - <a class="code" href="../../d5/d9d/tcltklib_8c.html#aa36638418f48fb2f8074a4fc4d425a8c">dst</a>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  n = siz - <a class="code" href="../../d5/de6/strlcat_8c.html#a5dd6ad99a2c765c7a96594c16d82aa23">dlen</a>;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keywordflow">if</span> (n == 0)</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span>(dlen + <a class="code" href="../../d6/d7b/strchr_8c.html#a219836f542ce53545052bed5353820ca">strlen</a>(s));</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordflow">while</span> (*s != <span class="charliteral">'\0'</span>) {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keywordflow">if</span> (n != 1) {</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  *d++ = *<a class="code" href="../../de/d46/os2_8c.html#a58defbf6fe556592007171f7a347f9d6">s</a>;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  n--;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  }</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  s++;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  }</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  *d = <span class="charliteral">'\0'</span>;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">return</span>(dlen + (s - src)); <span class="comment">/* count does not include NUL */</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> }</div>
<div class="ttc" id="bigdecimal_8c_html_aeab71244afb687f16d8c4f5ee9d6ef0e"><div class="ttname"><a href="../../de/d07/bigdecimal_8c.html#aeab71244afb687f16d8c4f5ee9d6ef0e">n</a></div><div class="ttdeci">ssize_t n</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d07/bigdecimal_8c_source.html#l05519">bigdecimal.c:5519</a></div></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="strlcat_8c_html_a3d11deb1ff109e839550a37edeb9ea4d"><div class="ttname"><a href="../../d5/de6/strlcat_8c.html#a3d11deb1ff109e839550a37edeb9ea4d">siz</a></div><div class="ttdeci">size_t siz</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/de6/strlcat_8c_source.html#l00049">strlcat.c:49</a></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="strlcat_8c_html_a4baaf26ccdc71244db2410e8d4938e6a"><div class="ttname"><a href="../../d5/de6/strlcat_8c.html#a4baaf26ccdc71244db2410e8d4938e6a">d</a></div><div class="ttdeci">d</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/de6/strlcat_8c_source.html#l00058">strlcat.c:58</a></div></div>
<div class="ttc" id="strftime_8c_html_a2c212835823e3c54a8ab6d95c652660e"><div class="ttname"><a href="../../d8/d4e/strftime_8c.html#a2c212835823e3c54a8ab6d95c652660e">const</a></div><div class="ttdeci">#define const</div><div class="ttdef"><b>Definition:</b> <a href="../../d8/d4e/strftime_8c_source.html#l00101">strftime.c:101</a></div></div>
<div class="ttc" id="os2_8c_html_a58defbf6fe556592007171f7a347f9d6"><div class="ttname"><a href="../../de/d46/os2_8c.html#a58defbf6fe556592007171f7a347f9d6">s</a></div><div class="ttdeci">register char * s</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d46/os2_8c_source.html#l00056">os2.c:56</a></div></div>
<div class="ttc" id="strlcat_8c_html_a5dd6ad99a2c765c7a96594c16d82aa23"><div class="ttname"><a href="../../d5/de6/strlcat_8c.html#a5dd6ad99a2c765c7a96594c16d82aa23">dlen</a></div><div class="ttdeci">size_t dlen</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/de6/strlcat_8c_source.html#l00054">strlcat.c:54</a></div></div>
<div class="ttc" id="tcltklib_8c_html_ad49d9d73467b0b43682b0847bfcf5570"><div class="ttname"><a href="../../d5/d9d/tcltklib_8c.html#ad49d9d73467b0b43682b0847bfcf5570">src</a></div><div class="ttdeci">VALUE src</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d9d/tcltklib_8c_source.html#l07940">tcltklib.c:7940</a></div></div>
<div class="ttc" id="missing_8h_html_aaf5a91beb98482ed8f426c921a4493a1"><div class="ttname"><a href="../../d3/d90/missing_8h.html#aaf5a91beb98482ed8f426c921a4493a1">strlcat</a></div><div class="ttdeci">RUBY_EXTERN size_t strlcat(char *, const char *, size_t)</div></div>
<div class="ttc" id="tcltklib_8c_html_aa36638418f48fb2f8074a4fc4d425a8c"><div class="ttname"><a href="../../d5/d9d/tcltklib_8c.html#aa36638418f48fb2f8074a4fc4d425a8c">dst</a></div><div class="ttdeci">char * dst</div><div class="ttdef"><b>Definition:</b> <a href="../../d5/d9d/tcltklib_8c_source.html#l09855">tcltklib.c:9855</a></div></div>
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