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<a class="el" href="dir_000000.html">src</a>&nbsp;/&nbsp;<a class="el" href="dir_000001.html">libutils</a></div>
<h1>date.c</h1><a href="date_8c.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment">00001 <span class="comment">/*</span>
00002 <span class="comment"> * Copyright (c) 2005, 2006 by KoanLogic s.r.l. &lt;http://www.koanlogic.com&gt;</span>
00003 <span class="comment"> * All rights reserved.</span>
00004 <span class="comment"> *</span>
00005 <span class="comment"> * This file is part of KLone, and as such it is subject to the license stated</span>
00006 <span class="comment"> * in the LICENSE file which you have received as part of this distribution.</span>
00007 <span class="comment"> *</span>
00008 <span class="comment"> * $Id: date.c,v 1.9 2006/04/22 13:14:46 tat Exp $</span>
00009 <span class="comment"> */</span>
00010 
00011 <span class="preprocessor">#include &lt;stdlib.h&gt;</span>
00012 <span class="preprocessor">#include &lt;stdio.h&gt;</span>
00013 <span class="preprocessor">#include &lt;time.h&gt;</span>
00014 <span class="preprocessor">#include &lt;ctype.h&gt;</span>
00015 <span class="preprocessor">#include &lt;fcntl.h&gt;</span>
00016 <span class="preprocessor">#include &lt;unistd.h&gt;</span>
00017 <span class="preprocessor">#include &lt;dirent.h&gt;</span>
00018 <span class="preprocessor">#include &lt;sys/stat.h&gt;</span>
00019 <span class="preprocessor">#include &lt;<a class="code" href="klone_8h.html">klone/klone.h</a>&gt;</span>
00020 <span class="preprocessor">#include &lt;<a class="code" href="os_8h.html">klone/os.h</a>&gt;</span>
00021 <span class="preprocessor">#include &lt;<a class="code" href="utils_8h.html">klone/utils.h</a>&gt;</span>
00022 
<a name="l00028"></a><a class="code" href="group__u__t.html#ga0">00028</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="group__u__t.html#ga0">days3</a>[] = { 
00029     <span class="stringliteral">"Sun"</span>, <span class="stringliteral">"Mon"</span>, <span class="stringliteral">"Tue"</span>, <span class="stringliteral">"Wed"</span>, <span class="stringliteral">"Thu"</span>, <span class="stringliteral">"Fri"</span>, <span class="stringliteral">"Sat"</span> 
00030 };
<a name="l00031"></a><a class="code" href="group__u__t.html#ga1">00031</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="group__u__t.html#ga1">days</a>[] = { 
00032     <span class="stringliteral">"Sunday"</span>, <span class="stringliteral">"Monday"</span>, <span class="stringliteral">"Tuesday"</span>, <span class="stringliteral">"Wednesday"</span>, <span class="stringliteral">"Thursday"</span>,  <span class="stringliteral">"Friday"</span>,
00033     <span class="stringliteral">"Saturday"</span>, <span class="stringliteral">"Sunday"</span> 
00034 };
<a name="l00035"></a><a class="code" href="group__u__t.html#ga2">00035</a> <span class="keyword">const</span> <span class="keywordtype">char</span>* <a class="code" href="group__u__t.html#ga2">months</a>[] = { 
00036     <span class="stringliteral">"Jan"</span>, <span class="stringliteral">"Feb"</span>, <span class="stringliteral">"Mar"</span>, <span class="stringliteral">"Apr"</span>, <span class="stringliteral">"May"</span>, <span class="stringliteral">"Jun"</span>, 
00037     <span class="stringliteral">"Jul"</span>, <span class="stringliteral">"Aug"</span>, <span class="stringliteral">"Sep"</span>, <span class="stringliteral">"Oct"</span>, <span class="stringliteral">"Nov"</span>, <span class="stringliteral">"Dec"</span> 
00038 };
00039 
00040 <span class="keyword">static</span> <span class="keywordtype">int</span> month_idx(<span class="keyword">const</span> <span class="keywordtype">char</span> *mon)
00041 {
00042     <span class="keywordtype">int</span> i;
00043 
00044     dbg_return_if (mon == NULL, -1);
00045     
00046     <span class="keywordflow">for</span>(i = 0; i &lt; 12; ++i)
00047         <span class="keywordflow">if</span>(strcasecmp(months[i], mon) == 0)
00048             <span class="keywordflow">return</span> i;
00049 
00050     <span class="keywordflow">return</span> -1;
00051 }
00052 
<a name="l00065"></a><a class="code" href="group__u__t.html#ga5">00065</a> <span class="keywordtype">int</span> <a class="code" href="group__u__t.html#ga5">u_asctime_to_tt</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str, time_t *tp)
00066 {
00067     <span class="keyword">enum</span> { BUFSZ = 64 };
00068     <span class="keywordtype">char</span> wday[BUFSZ], mon[BUFSZ];
00069     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> day, year, hour, min, sec;
00070     <span class="keyword">struct </span>tm tm;
00071     <span class="keywordtype">int</span> i;
00072 
00073     dbg_return_if (str == NULL, ~0);
00074     dbg_return_if (tp == NULL, ~0);
00075     dbg_return_if (strlen(str) &gt;= BUFSZ, ~0);
00076 
00077     dbg_err_if((i = sscanf(str, <span class="stringliteral">"%s %s %u %u:%u:%u %u"</span>, wday, 
00078         mon, &amp;day, &amp;hour, &amp;min, &amp;sec, &amp;year)) != 7);
00079 
00080     memset(&amp;tm, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> tm));
00081 
00082     <span class="comment">/* time */</span>
00083     tm.tm_sec = sec; tm.tm_min = min; tm.tm_hour = hour;
00084 
00085     <span class="comment">/* date */</span>
00086     tm.tm_mday = day; 
00087     tm.tm_mon = month_idx(mon);
00088     tm.tm_year = year - 1900;
00089 
00090     dbg_err_if(tm.tm_mon &lt; 0);
00091 
00092     *tp = timegm(&amp;tm);
00093     
00094     <span class="keywordflow">return</span> 0;
00095 err:
00096     <span class="keywordflow">return</span> ~0;
00097 }
00098 
<a name="l00111"></a><a class="code" href="group__u__t.html#ga6">00111</a> <span class="keywordtype">int</span> <a class="code" href="group__u__t.html#ga6">u_rfc850_to_tt</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str, time_t *tp)
00112 {
00113     <span class="keyword">enum</span> { BUFSZ = 64 };
00114     <span class="keywordtype">char</span> wday[BUFSZ], mon[BUFSZ], tzone[BUFSZ];
00115     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> day, year, hour, min, sec;
00116     <span class="keyword">struct </span>tm tm;
00117     <span class="keywordtype">int</span> i;
00118     <span class="keywordtype">char</span> c;
00119 
00120     dbg_return_if (str == NULL, ~0);
00121     dbg_return_if (tp == NULL, ~0);
00122     dbg_return_if (strlen(str) &gt;= BUFSZ, ~0);
00123 
00124     dbg_err_if((i = sscanf(str, <span class="stringliteral">"%[^,], %u%c%[^-]%c%u %u:%u:%u %s"</span>, wday, 
00125         &amp;day, &amp;c, mon, &amp;c, &amp;year, &amp;hour, &amp;min, &amp;sec, tzone)) != 10);
00126 
00127     memset(&amp;tm, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> tm));
00128 
00129     <span class="comment">/* time */</span>
00130     tm.tm_sec = sec; tm.tm_min = min; tm.tm_hour = hour;
00131 
00132     <span class="comment">/* date */</span>
00133     tm.tm_mday = day; 
00134     tm.tm_mon = month_idx(mon);
00135     tm.tm_year = year - 1900;
00136 
00137     dbg_err_if(tm.tm_mon &lt; 0);
00138 
00139 <span class="preprocessor">#ifdef HAVE_TMZONE</span>
00140 <span class="preprocessor"></span>    <span class="comment">/* time zone */</span>
00141     tm.tm_zone = tzone;
00142 <span class="preprocessor">#endif</span>
00143 <span class="preprocessor"></span>
00144     *tp = timegm(&amp;tm);
00145 
00146     <span class="keywordflow">return</span> 0;
00147 err:
00148     <span class="keywordflow">return</span> ~0;
00149 }
00150 
<a name="l00163"></a><a class="code" href="group__u__t.html#ga7">00163</a> <span class="keywordtype">int</span> <a class="code" href="group__u__t.html#ga7">u_rfc822_to_tt</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str, time_t *tp)
00164 {
00165     <span class="keyword">enum</span> { BUFSZ = 64 };
00166     <span class="keywordtype">char</span> wday[BUFSZ], mon[BUFSZ], tzone[BUFSZ];
00167     <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> day, year, hour, min, sec;
00168     <span class="keyword">struct </span>tm tm;
00169 
00170     dbg_return_if (str == NULL, ~0);
00171     dbg_return_if (tp == NULL, ~0);
00172     dbg_return_if (strlen(str) &gt;= BUFSZ, ~0);
00173 
00174     dbg_err_if(sscanf(str, <span class="stringliteral">"%[^,], %u %s %u %u:%u:%u %s"</span>, wday, 
00175         &amp;day, mon, &amp;year, &amp;hour, &amp;min, &amp;sec, tzone) != 8);
00176 
00177     memset(&amp;tm, 0, <span class="keyword">sizeof</span>(<span class="keyword">struct</span> tm));
00178 
00179     <span class="comment">/* time */</span>
00180     tm.tm_sec = sec; tm.tm_min = min; tm.tm_hour = hour;
00181 
00182     <span class="comment">/* date */</span>
00183     tm.tm_mday = day; 
00184     tm.tm_mon = month_idx(mon);
00185     tm.tm_year = year - 1900; 
00186 
00187     dbg_err_if(tm.tm_mon &lt; 0);
00188 
00189 <span class="preprocessor">#ifdef HAVE_TMZONE</span>
00190 <span class="preprocessor"></span>    <span class="comment">/* time zone */</span>
00191     tm.tm_zone = tzone;
00192 <span class="preprocessor">#endif</span>
00193 <span class="preprocessor"></span>
00194     *tp = timegm(&amp;tm);
00195 
00196     <span class="keywordflow">return</span> 0;
00197 err:
00198     <span class="keywordflow">return</span> ~0;
00199 }
00200 
<a name="l00213"></a><a class="code" href="group__u__t.html#ga8">00213</a> <span class="keywordtype">int</span> <a class="code" href="group__u__t.html#ga8">u_httpdate_to_tt</a>(<span class="keyword">const</span> <span class="keywordtype">char</span> *str, time_t *tp)
00214 {
00215     dbg_return_if (str == NULL, ~0);
00216     dbg_return_if (tp == NULL, ~0);
00217     dbg_return_if (strlen(str) &lt; 4, ~0);
00218 
00219     <span class="keywordflow">if</span>(str[3] == <span class="charliteral">','</span>)
00220         <span class="keywordflow">return</span> <a class="code" href="group__u__t.html#ga7">u_rfc822_to_tt</a>(str, tp);
00221     <span class="keywordflow">else</span> <span class="keywordflow">if</span>(str[3] == <span class="charliteral">' '</span>)
00222         <span class="keywordflow">return</span> <a class="code" href="group__u__t.html#ga5">u_asctime_to_tt</a>(str, tp);
00223 
00224     <span class="keywordflow">return</span> <a class="code" href="group__u__t.html#ga6">u_rfc850_to_tt</a>(str, tp);
00225 }
00226 
<a name="l00241"></a><a class="code" href="group__u__t.html#ga9">00241</a> <span class="keywordtype">int</span> <a class="code" href="group__u__t.html#ga9">u_tt_to_rfc822</a>(<span class="keywordtype">char</span> dst[], time_t ts)
00242 {
00243     <span class="keyword">enum</span> { RFC822_DATE_BUFSZ = 32 };
00244     <span class="keywordtype">char</span> buf[RFC822_DATE_BUFSZ];
00245     <span class="keyword">struct </span>tm tm;
00246 
00247     dbg_return_if (dst == NULL, ~0);
00248 
00249 <span class="preprocessor">#ifdef OS_WIN</span>
00250 <span class="preprocessor"></span>    memcpy(&amp;tm, gmtime(&amp;ts), <span class="keyword">sizeof</span>(tm));
00251 <span class="preprocessor">#else</span>
00252 <span class="preprocessor"></span>    dbg_err_if(gmtime_r(&amp;ts, &amp;tm) == NULL);
00253 <span class="preprocessor">#endif</span>
00254 <span class="preprocessor"></span>
00255     dbg_err_if(tm.tm_wday &gt; 6 || tm.tm_wday &lt; 0);
00256     dbg_err_if(tm.tm_mon &gt; 11 || tm.tm_mon &lt; 0);
00257 
00258     dbg_err_if(u_snprintf(buf, RFC822_DATE_BUFSZ, 
00259                 <span class="stringliteral">"%s, %02u %s %02u %02u:%02u:%02u GMT"</span>,
00260                 <a class="code" href="group__u__t.html#ga0">days3</a>[tm.tm_wday], 
00261                 tm.tm_mday, <a class="code" href="group__u__t.html#ga2">months</a>[tm.tm_mon], tm.tm_year + 1900, 
00262                 tm.tm_hour, tm.tm_min, tm.tm_sec));
00263 
00264     <span class="comment">/* copy out */</span>
00265     u_sstrncpy(dst, buf, RFC822_DATE_BUFSZ - 1);
00266 
00267     <span class="keywordflow">return</span> 0;
00268 err:
00269     <span class="keywordflow">return</span> ~0;
00270 }
00271 
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