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<h1>simple.c</h1><div class="fragment"><pre class="fragment"><span class="preprocessor">#include <string.h></span>
<span class="preprocessor">#include <stdlib.h></span>
<span class="preprocessor">#include "<a class="code" href="confuse_8h.html" title="A configuration file parser library.">confuse.h</a>"</span>
<span class="keywordtype">int</span> main(<span class="keywordtype">void</span>)
{
<a class="code" href="confuse_8h.html#4bce4b6aed9b07489d6a5c70321907e4" title="Boolean values.">cfg_bool_t</a> verbose = cfg_false;
<span class="keywordtype">char</span> *server = NULL;
<span class="keywordtype">double</span> delay = 1.356e-32;
<span class="keywordtype">char</span> *username = NULL;
<span class="comment">/* Although the macro used to specify an integer option is called</span>
<span class="comment"> * CFG_SIMPLE_INT(), it actually expects a long int. On a 64 bit system</span>
<span class="comment"> * where ints are 32 bit and longs 64 bit (such as the x86-64 or amd64</span>
<span class="comment"> * architectures), you will get weird effects if you use an int here.</span>
<span class="comment"> *</span>
<span class="comment"> * If you use the regular (non-"simple") options, ie CFG_INT() and use</span>
<span class="comment"> * cfg_getint(), this is not a problem as the data types are implicitly</span>
<span class="comment"> * cast.</span>
<span class="comment"> */</span>
<span class="keywordtype">long</span> <span class="keywordtype">int</span> debug = 1;
<a name="_a0"></a><a class="code" href="structcfg__opt__t.html" title="Data structure holding information about an option.">cfg_opt_t</a> opts[] = {
<a name="a1"></a><a class="code" href="confuse_8h.html#228dc9c22fbcbeabed4d171774662ce8" title="Initialize a &quot;simple&quot; boolean option (see documentation for CFG_SIMPLE_STR...">CFG_SIMPLE_BOOL</a>(<span class="stringliteral">"verbose"</span>, &verbose),
<a name="a2"></a><a class="code" href="confuse_8h.html#e54fbbc31bd8c7ec8d7f04597a9f749d" title="Initialize a &quot;simple&quot; string option.">CFG_SIMPLE_STR</a>(<span class="stringliteral">"server"</span>, &server),
<a class="code" href="confuse_8h.html#e54fbbc31bd8c7ec8d7f04597a9f749d" title="Initialize a &quot;simple&quot; string option.">CFG_SIMPLE_STR</a>(<span class="stringliteral">"user"</span>, &username),
<a name="a3"></a><a class="code" href="confuse_8h.html#88fa2e73a1294c7e8a1f1519b68ce0ff" title="Initialize a &quot;simple&quot; integer option (see documentation for CFG_SIMPLE_STR...">CFG_SIMPLE_INT</a>(<span class="stringliteral">"debug"</span>, &debug),
<a name="a4"></a><a class="code" href="confuse_8h.html#073b3b12a5ba4648a1f4f1aa40ff3a2a" title="Initialize a &quot;simple&quot; floating point option (see documentation for CFG_SIMPLE_STR...">CFG_SIMPLE_FLOAT</a>(<span class="stringliteral">"delay"</span>, &delay),
<a name="a5"></a><a class="code" href="confuse_8h.html#6b29dd8a4c6cd3d392d4ab6b2e535597" title="Terminate list of options.">CFG_END</a>()
};
<a name="_a6"></a><a class="code" href="structcfg__t.html" title="Data structure holding information about a &quot;section&quot;.">cfg_t</a> *cfg;
<span class="comment">/* set default value for the server option */</span>
server = strdup(<span class="stringliteral">"gazonk"</span>);
cfg = <a name="a7"></a>cfg_init(opts, 0);
<a name="a8"></a>cfg_parse(cfg, <span class="stringliteral">"simple.conf"</span>);
printf(<span class="stringliteral">"verbose: %s\n"</span>, verbose ? <span class="stringliteral">"true"</span> : <span class="stringliteral">"false"</span>);
printf(<span class="stringliteral">"server: %s\n"</span>, server);
printf(<span class="stringliteral">"username: %s\n"</span>, username);
printf(<span class="stringliteral">"debug: %ld\n"</span>, debug);
printf(<span class="stringliteral">"delay: %G\n"</span>, delay);
printf(<span class="stringliteral">"setting username to 'foo'\n"</span>);
<span class="comment">/* using cfg_setstr here is not necessary at all, the equivalent</span>
<span class="comment"> * code is:</span>
<span class="comment"> * free(username);</span>
<span class="comment"> * username = strdup("foo");</span>
<span class="comment"> */</span>
<a name="a9"></a>cfg_setstr(cfg, <span class="stringliteral">"user"</span>, <span class="stringliteral">"foo"</span>);
printf(<span class="stringliteral">"username: %s\n"</span>, username);
<span class="comment">/* print the parsed values to another file */</span>
{
FILE *fp = fopen(<span class="stringliteral">"simple.conf.out"</span>, <span class="stringliteral">"w"</span>);
<a name="a10"></a>cfg_print(cfg, fp);
fclose(fp);
}
<a name="a11"></a>cfg_free(cfg);
<span class="comment">/* You are responsible for freeing string values. */</span>
free(server);
free(username);
<span class="keywordflow">return</span> 0;
}
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