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<title>libmtp: trexist.c</title>
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<h1>trexist.c</h1><div class="fragment"><pre class="fragment">
<span class="preprocessor">#include "common.h"</span>
<span class="preprocessor">#include <stdlib.h></span>
<span class="preprocessor">#include <limits.h></span>
<span class="keyword">static</span> <span class="keywordtype">void</span> usage (<span class="keywordtype">void</span>)
{
fprintf(stderr, <span class="stringliteral">"trexist <trackid>\n"</span>);
}
<span class="keywordtype">int</span> main (<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)
{
<a name="_a0"></a><a class="code" href="structLIBMTP__mtpdevice__struct.html">LIBMTP_mtpdevice_t</a> *device;
uint32_t id;
<span class="keywordtype">char</span> *endptr;
fprintf(stdout, <span class="stringliteral">"libmtp version: "</span> LIBMTP_VERSION_STRING <span class="stringliteral">"\n\n"</span>);
<span class="comment">// We need track ID </span>
<span class="keywordflow">if</span> ( argc != 2 ) {
usage();
<span class="keywordflow">return</span> 1;
}
<span class="comment">// Sanity check song ID</span>
<span class="keywordtype">id</span> = strtoul(argv[1], &endptr, 10);
<span class="keywordflow">if</span> ( *endptr != 0 ) {
fprintf(stderr, <span class="stringliteral">"illegal value %s\n"</span>, argv[1]);
<span class="keywordflow">return</span> 1;
} <span class="keywordflow">else</span> <span class="keywordflow">if</span> ( ! <span class="keywordtype">id</span> ) {
fprintf(stderr, <span class="stringliteral">"bad song id %u\n"</span>, <span class="keywordtype">id</span>);
<span class="keywordflow">return</span> 1;
}
<a name="a1"></a><a class="code" href="group__internals.html#gaaca880ea9ab434e8cf1a1051128318ef">LIBMTP_Init</a>();
device = <a name="a2"></a><a class="code" href="group__basic.html#gacd19150fce8688a56746c5b4e57be3ff">LIBMTP_Get_First_Device</a>();
<span class="keywordflow">if</span> (device == NULL) {
printf(<span class="stringliteral">"No devices. Connect/replug device and try again.\n"</span>);
exit (0);
}
printf(<span class="stringliteral">"%s\n"</span>, <a name="a3"></a><a class="code" href="group__tracks.html#ga93303995c985c303a250c5a815cf187c">LIBMTP_Track_Exists</a>(device, <span class="keywordtype">id</span>) ? <span class="stringliteral">"Yes"</span> : <span class="stringliteral">"No"</span>);
<a name="a4"></a><a class="code" href="group__basic.html#ga55377eb5a8ff6ce2b1a557356fe12039">LIBMTP_Release_Device</a>(device);
printf(<span class="stringliteral">"OK.\n"</span>);
exit (0);
}
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