File:  [ELWIX - Embedded LightWeight unIX -] / embedaddon / confuse / doc / html / simple_8c-example.html
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Wed Mar 17 00:49:17 2021 UTC (3 years, 3 months ago) by misho
Branches: confuse, MAIN
CVS tags: v3_3, HEAD
confuse 3.3

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   &#160;<span id="projectnumber">3.3</span>
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<div class="title">simple.c</div>  </div>
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<div class="contents">
<div class="fragment"><div class="line"><span class="preprocessor">#define _GNU_SOURCE</span></div>
<div class="line"><span class="preprocessor">#include &lt;string.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;stdlib.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &lt;locale.h&gt;</span></div>
<div class="line"><span class="preprocessor">#include &quot;<a class="code" href="confuse_8h.html">confuse.h</a>&quot;</span></div>
<div class="line"> </div>
<div class="line"><span class="keywordtype">int</span> main(<span class="keywordtype">void</span>)</div>
<div class="line">{</div>
<div class="line">    <span class="keyword">static</span> <a class="code" href="confuse_8h.html#a4bce4b6aed9b07489d6a5c70321907e4">cfg_bool_t</a> verbose = cfg_false;</div>
<div class="line">    <span class="keyword">static</span> <span class="keywordtype">char</span> *server = NULL;</div>
<div class="line">    <span class="keyword">static</span> <span class="keywordtype">double</span> delay = 1.356e-32;</div>
<div class="line">    <span class="keyword">static</span> <span class="keywordtype">char</span> *username = NULL;</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* Although the macro used to specify an integer option is called</span></div>
<div class="line"><span class="comment">     * CFG_SIMPLE_INT(), it actually expects a long int. On a 64 bit system</span></div>
<div class="line"><span class="comment">     * where ints are 32 bit and longs 64 bit (such as the x86-64 or amd64</span></div>
<div class="line"><span class="comment">     * architectures), you will get weird effects if you use an int here.</span></div>
<div class="line"><span class="comment">     *</span></div>
<div class="line"><span class="comment">     * If you use the regular (non-&quot;simple&quot;) options, ie CFG_INT() and use</span></div>
<div class="line"><span class="comment">     * cfg_getint(), this is not a problem as the data types are implicitly</span></div>
<div class="line"><span class="comment">     * cast.</span></div>
<div class="line"><span class="comment">     */</span></div>
<div class="line">    <span class="keyword">static</span> <span class="keywordtype">long</span> <span class="keywordtype">int</span> debug = 1;</div>
<div class="line"> </div>
<div class="line">    <a name="_a0"></a><a class="code" href="structcfg__opt__t.html">cfg_opt_t</a> opts[] = {</div>
<div class="line">        <a name="a1"></a><a class="code" href="confuse_8h.html#a228dc9c22fbcbeabed4d171774662ce8">CFG_SIMPLE_BOOL</a>(<span class="stringliteral">&quot;verbose&quot;</span>, &amp;verbose),</div>
<div class="line">        <a name="a2"></a><a class="code" href="confuse_8h.html#ae54fbbc31bd8c7ec8d7f04597a9f749d">CFG_SIMPLE_STR</a>(<span class="stringliteral">&quot;server&quot;</span>, &amp;server),</div>
<div class="line">        <a class="code" href="confuse_8h.html#ae54fbbc31bd8c7ec8d7f04597a9f749d">CFG_SIMPLE_STR</a>(<span class="stringliteral">&quot;user&quot;</span>, &amp;username),</div>
<div class="line">        <a name="a3"></a><a class="code" href="confuse_8h.html#a88fa2e73a1294c7e8a1f1519b68ce0ff">CFG_SIMPLE_INT</a>(<span class="stringliteral">&quot;debug&quot;</span>, &amp;debug),</div>
<div class="line">        <a name="a4"></a><a class="code" href="confuse_8h.html#a073b3b12a5ba4648a1f4f1aa40ff3a2a">CFG_SIMPLE_FLOAT</a>(<span class="stringliteral">&quot;delay&quot;</span>, &amp;delay),</div>
<div class="line">        <a name="a5"></a><a class="code" href="confuse_8h.html#a6b29dd8a4c6cd3d392d4ab6b2e535597">CFG_END</a>()</div>
<div class="line">    };</div>
<div class="line">    <a name="_a6"></a><a class="code" href="structcfg__t.html">cfg_t</a> *cfg;</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* Localize messages &amp; types according to environment, since v2.9 */</span></div>
<div class="line"><span class="preprocessor">#ifdef LC_MESSAGES</span></div>
<div class="line">    setlocale(LC_MESSAGES, <span class="stringliteral">&quot;&quot;</span>);</div>
<div class="line">    setlocale(LC_CTYPE, <span class="stringliteral">&quot;&quot;</span>);</div>
<div class="line"><span class="preprocessor">#endif</span></div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* set default value for the server option */</span></div>
<div class="line">    server = strdup(<span class="stringliteral">&quot;gazonk&quot;</span>);</div>
<div class="line"> </div>
<div class="line">    cfg = <a name="a7"></a><a class="code" href="confuse_8h.html#aec07794916564c8ab437e030ac618aa8">cfg_init</a>(opts, 0);</div>
<div class="line">    <a name="a8"></a><a class="code" href="confuse_8h.html#a0fca327466956c5580199e24397d49fe">cfg_parse</a>(cfg, <span class="stringliteral">&quot;simple.conf&quot;</span>);</div>
<div class="line"> </div>
<div class="line">    printf(<span class="stringliteral">&quot;verbose: %s\n&quot;</span>, verbose ? <span class="stringliteral">&quot;true&quot;</span> : <span class="stringliteral">&quot;false&quot;</span>);</div>
<div class="line">    printf(<span class="stringliteral">&quot;server: %s\n&quot;</span>, server);</div>
<div class="line">    printf(<span class="stringliteral">&quot;username: %s\n&quot;</span>, username);</div>
<div class="line">    printf(<span class="stringliteral">&quot;debug: %ld\n&quot;</span>, debug);</div>
<div class="line">    printf(<span class="stringliteral">&quot;delay: %G\n&quot;</span>, delay);</div>
<div class="line"> </div>
<div class="line">    printf(<span class="stringliteral">&quot;setting username to &#39;foo&#39;\n&quot;</span>);</div>
<div class="line">    <span class="comment">/* using cfg_setstr here is not necessary at all, the equivalent</span></div>
<div class="line"><span class="comment">     * code is:</span></div>
<div class="line"><span class="comment">     *   free(username);</span></div>
<div class="line"><span class="comment">     *   username = strdup(&quot;foo&quot;);</span></div>
<div class="line"><span class="comment">     */</span></div>
<div class="line">    <a name="a9"></a><a class="code" href="confuse_8h.html#a523a5eec449362eee5a0d2709645c35b">cfg_setstr</a>(cfg, <span class="stringliteral">&quot;user&quot;</span>, <span class="stringliteral">&quot;foo&quot;</span>);</div>
<div class="line">    printf(<span class="stringliteral">&quot;username: %s\n&quot;</span>, username);</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* print the parsed values to another file */</span></div>
<div class="line">    {</div>
<div class="line">        FILE *fp = fopen(<span class="stringliteral">&quot;simple.conf.out&quot;</span>, <span class="stringliteral">&quot;w&quot;</span>);</div>
<div class="line"> </div>
<div class="line">        <a name="a10"></a><a class="code" href="confuse_8h.html#ac3343e32da22758f76ec50627316c708">cfg_print</a>(cfg, fp);</div>
<div class="line">        fclose(fp);</div>
<div class="line">    }</div>
<div class="line"> </div>
<div class="line">    <a name="a11"></a><a class="code" href="confuse_8h.html#aae5e08626bf53514a6ebf250580feba3">cfg_free</a>(cfg);</div>
<div class="line"> </div>
<div class="line">    <span class="comment">/* You are responsible for freeing string values. */</span></div>
<div class="line">    free(server);</div>
<div class="line">    free(username);</div>
<div class="line"> </div>
<div class="line">    <span class="keywordflow">return</span> 0;</div>
<div class="line">}</div>
</div><!-- fragment --> </div><!-- contents -->
<div class="ttc" id="aconfuse_8h_html_aec07794916564c8ab437e030ac618aa8"><div class="ttname"><a href="confuse_8h.html#aec07794916564c8ab437e030ac618aa8">cfg_init</a></div><div class="ttdeci">DLLIMPORT cfg_t *__export cfg_init(cfg_opt_t *opts, cfg_flag_t flags)</div><div class="ttdoc">Create and initialize a cfg_t structure.</div><div class="ttdef"><b>Definition:</b> confuse.c:1816</div></div>
<div class="ttc" id="aconfuse_8h_html_a228dc9c22fbcbeabed4d171774662ce8"><div class="ttname"><a href="confuse_8h.html#a228dc9c22fbcbeabed4d171774662ce8">CFG_SIMPLE_BOOL</a></div><div class="ttdeci">#define CFG_SIMPLE_BOOL(name, svalue)</div><div class="ttdoc">Initialize a &quot;simple&quot; boolean option (see documentation for CFG_SIMPLE_STR for more information).</div><div class="ttdef"><b>Definition:</b> confuse.h:511</div></div>
<div class="ttc" id="aconfuse_8h_html_a073b3b12a5ba4648a1f4f1aa40ff3a2a"><div class="ttname"><a href="confuse_8h.html#a073b3b12a5ba4648a1f4f1aa40ff3a2a">CFG_SIMPLE_FLOAT</a></div><div class="ttdeci">#define CFG_SIMPLE_FLOAT(name, svalue)</div><div class="ttdoc">Initialize a &quot;simple&quot; floating point option (see documentation for CFG_SIMPLE_STR for more informatio...</div><div class="ttdef"><b>Definition:</b> confuse.h:478</div></div>
<div class="ttc" id="aconfuse_8h_html_a523a5eec449362eee5a0d2709645c35b"><div class="ttname"><a href="confuse_8h.html#a523a5eec449362eee5a0d2709645c35b">cfg_setstr</a></div><div class="ttdeci">DLLIMPORT int __export cfg_setstr(cfg_t *cfg, const char *name, const char *value)</div><div class="ttdoc">Set the value of a string option given its name.</div><div class="ttdef"><b>Definition:</b> confuse.c:2211</div></div>
<div class="ttc" id="aconfuse_8h_html_a6b29dd8a4c6cd3d392d4ab6b2e535597"><div class="ttname"><a href="confuse_8h.html#a6b29dd8a4c6cd3d392d4ab6b2e535597">CFG_END</a></div><div class="ttdeci">#define CFG_END()</div><div class="ttdoc">Terminate list of options.</div><div class="ttdef"><b>Definition:</b> confuse.h:574</div></div>
<div class="ttc" id="aconfuse_8h_html"><div class="ttname"><a href="confuse_8h.html">confuse.h</a></div><div class="ttdoc">A configuration file parser library.</div></div>
<div class="ttc" id="aconfuse_8h_html_ae54fbbc31bd8c7ec8d7f04597a9f749d"><div class="ttname"><a href="confuse_8h.html#ae54fbbc31bd8c7ec8d7f04597a9f749d">CFG_SIMPLE_STR</a></div><div class="ttdeci">#define CFG_SIMPLE_STR(name, svalue)</div><div class="ttdoc">Initialize a &quot;simple&quot; string option.</div><div class="ttdef"><b>Definition:</b> confuse.h:410</div></div>
<div class="ttc" id="aconfuse_8h_html_ac3343e32da22758f76ec50627316c708"><div class="ttname"><a href="confuse_8h.html#ac3343e32da22758f76ec50627316c708">cfg_print</a></div><div class="ttdeci">DLLIMPORT int __export cfg_print(cfg_t *cfg, FILE *fp)</div><div class="ttdoc">Print the options and values to a file.</div><div class="ttdef"><b>Definition:</b> confuse.c:2548</div></div>
<div class="ttc" id="aconfuse_8h_html_a0fca327466956c5580199e24397d49fe"><div class="ttname"><a href="confuse_8h.html#a0fca327466956c5580199e24397d49fe">cfg_parse</a></div><div class="ttdeci">DLLIMPORT int __export cfg_parse(cfg_t *cfg, const char *filename)</div><div class="ttdoc">Parse a configuration file.</div><div class="ttdef"><b>Definition:</b> confuse.c:1746</div></div>
<div class="ttc" id="astructcfg__opt__t_html"><div class="ttname"><a href="structcfg__opt__t.html">cfg_opt_t</a></div><div class="ttdoc">Data structure holding information about an option.</div><div class="ttdef"><b>Definition:</b> confuse.h:309</div></div>
<div class="ttc" id="astructcfg__t_html"><div class="ttname"><a href="structcfg__t.html">cfg_t</a></div><div class="ttdoc">Data structure holding information about a &quot;section&quot;.</div><div class="ttdef"><b>Definition:</b> confuse.h:252</div></div>
<div class="ttc" id="aconfuse_8h_html_aae5e08626bf53514a6ebf250580feba3"><div class="ttname"><a href="confuse_8h.html#aae5e08626bf53514a6ebf250580feba3">cfg_free</a></div><div class="ttdeci">DLLIMPORT int __export cfg_free(cfg_t *cfg)</div><div class="ttdoc">Free a cfg_t context.</div><div class="ttdef"><b>Definition:</b> confuse.c:1962</div></div>
<div class="ttc" id="aconfuse_8h_html_a88fa2e73a1294c7e8a1f1519b68ce0ff"><div class="ttname"><a href="confuse_8h.html#a88fa2e73a1294c7e8a1f1519b68ce0ff">CFG_SIMPLE_INT</a></div><div class="ttdeci">#define CFG_SIMPLE_INT(name, svalue)</div><div class="ttdoc">Initialize a &quot;simple&quot; integer option (see documentation for CFG_SIMPLE_STR for more information).</div><div class="ttdef"><b>Definition:</b> confuse.h:445</div></div>
<div class="ttc" id="aconfuse_8h_html_a4bce4b6aed9b07489d6a5c70321907e4"><div class="ttname"><a href="confuse_8h.html#a4bce4b6aed9b07489d6a5c70321907e4">cfg_bool_t</a></div><div class="ttdeci">cfg_bool_t</div><div class="ttdoc">Boolean values.</div><div class="ttdef"><b>Definition:</b> confuse.h:232</div></div>
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