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<h1>settime.c</h1><div class="fragment"><pre class="fragment"><span class="preprocessor">#include "common.h"</span>
<span class="preprocessor">#include <string.h></span>
<span class="keyword">static</span> <span class="keywordtype">char</span> *prompt (<span class="keyword">const</span> <span class="keywordtype">char</span> *prompt, <span class="keywordtype">char</span> *buffer, <span class="keywordtype">size_t</span> bufsz, <span class="keywordtype">int</span> required)
{
<span class="keywordtype">char</span> *cp, *bp;
<span class="keywordflow">while</span> (1) {
fprintf(stdout, <span class="stringliteral">"%s> "</span>, prompt);
<span class="keywordflow">if</span> ( fgets(buffer, bufsz, stdin) == NULL ) {
<span class="keywordflow">if</span> (ferror(stdin)) {
perror(<span class="stringliteral">"fgets"</span>);
} <span class="keywordflow">else</span> {
fprintf(stderr, <span class="stringliteral">"EOF on stdin\n"</span>);
}
<span class="keywordflow">return</span> NULL;
}
cp= strrchr(buffer, <span class="charliteral">'\n'</span>);
<span class="keywordflow">if</span> ( cp != NULL ) *cp= <span class="charliteral">'\0'</span>;
bp= buffer;
<span class="keywordflow">while</span> ( bp != cp ) {
<span class="keywordflow">if</span> ( *bp != <span class="charliteral">' '</span> && *bp != <span class="charliteral">'\t'</span> ) <span class="keywordflow">return</span> bp;
bp++;
}
<span class="keywordflow">if</span> (! required) <span class="keywordflow">return</span> bp;
}
}
<span class="keyword">static</span> <span class="keywordtype">void</span> dumptime(<a name="_a0"></a><a class="code" href="structnjb__time__struct.html">njb_time_t</a> *time)
{
<span class="keywordflow">if</span> (time != NULL) {
<span class="keywordflow">switch</span>(time-><a name="a1"></a><a class="code" href="structnjb__time__struct.html#227a86206933473fc61798d4d5e37683">weekday</a>) {
<span class="keywordflow">case</span> 0:
printf(<span class="stringliteral">"Sunday "</span>);
<span class="keywordflow">break</span>;
<span class="keywordflow">case</span> 1:
printf(<span class="stringliteral">"Monday "</span>);
<span class="keywordflow">break</span>;
<span class="keywordflow">case</span> 2:
printf(<span class="stringliteral">"Tuesday "</span>);
<span class="keywordflow">break</span>;
<span class="keywordflow">case</span> 3:
printf(<span class="stringliteral">"Wednesday "</span>);
<span class="keywordflow">break</span>;
<span class="keywordflow">case</span> 4:
printf(<span class="stringliteral">"Thursday "</span>);
<span class="keywordflow">break</span>;
<span class="keywordflow">case</span> 5:
printf(<span class="stringliteral">"Friday "</span>);
<span class="keywordflow">break</span>;
<span class="keywordflow">case</span> 6:
printf(<span class="stringliteral">"Saturday "</span>);
}
<span class="comment">/* OK this is the way we write dates</span>
<span class="comment"> * in Sweden, you may change it if you</span>
<span class="comment"> * don't like it!</span>
<span class="comment"> */</span>
printf(<span class="stringliteral">"%u-%.2u-%.2u "</span>, time-><a name="a2"></a><a class="code" href="structnjb__time__struct.html#ce156e46767b197b844936654dffb739">year</a>,
time-><a name="a3"></a><a class="code" href="structnjb__time__struct.html#e41964a3348673cdd219b847f886bbf9">month</a>, time-><a name="a4"></a><a class="code" href="structnjb__time__struct.html#f8099ff42d8ebd590e33f676fcc2e6b0">day</a>);
printf(<span class="stringliteral">"%.2u:%.2u:%.2u\n"</span>, time-><a name="a5"></a><a class="code" href="structnjb__time__struct.html#3d1df33f2b06d60440f746d9735d6f0d">hours</a>,
time-><a name="a6"></a><a class="code" href="structnjb__time__struct.html#ad6d440031c3816280d6584c9ae503eb">minutes</a>, time-><a name="a7"></a><a class="code" href="structnjb__time__struct.html#cd35e31eeac27b23ba9e34b646ded27d">seconds</a>);
}
}
<span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span> **argv)
{
<a name="_a8"></a><a class="code" href="structnjb__struct.html">njb_t</a> njbs[<a name="a9"></a><a class="code" href="libnjb_8h.html#46e41076f44166b6446e3fdae6db62a9">NJB_MAX_DEVICES</a>], *njb;
<span class="keyword">extern</span> <span class="keywordtype">char</span> *optarg;
<span class="keywordtype">int</span> opt;
<span class="keywordtype">int</span> n, debug;
<a class="code" href="structnjb__time__struct.html">njb_time_t</a> *time;
<span class="keywordtype">char</span> *pnum;
<span class="keywordtype">char</span> num[80];
debug = 0;
<span class="keywordflow">while</span> ((opt = getopt(argc, argv, <span class="stringliteral">"D:"</span>)) != -1) {
<span class="keywordflow">switch</span> (opt) {
<span class="keywordflow">case</span> <span class="charliteral">'D'</span>:
debug = atoi(optarg);
<span class="keywordflow">break</span>;
<span class="keywordflow">default</span>:
fprintf(stderr, <span class="stringliteral">"usage: settime [ -D debuglvl ]\n"</span>);
<span class="keywordflow">return</span> 1;
}
}
<span class="keywordflow">if</span> (debug)
<a name="a10"></a><a class="code" href="group__internals.html#ga5ff48cc89e320bc1c1d89efd2613d77">NJB_Set_Debug</a>(debug);
<span class="keywordflow">if</span> (<a name="a11"></a><a class="code" href="group__basic.html#g199efd7711a70ae5d63f4052c2e492d3">NJB_Discover</a>(njbs, 0, &n) == -1) {
fprintf(stderr, <span class="stringliteral">"could not locate any jukeboxes\n"</span>);
<span class="keywordflow">return</span> 1;
}
<span class="keywordflow">if</span> (n == 0) {
fprintf(stderr, <span class="stringliteral">"no NJB devices found\n"</span>);
<span class="keywordflow">return</span> 0;
}
njb = njbs;
<span class="keywordflow">if</span> (<a name="a12"></a><a class="code" href="group__basic.html#ga631536b597d8f8cb73eeb47eff6640a">NJB_Open</a>(njb) == -1) {
<a name="a13"></a><a class="code" href="group__internals.html#ge9b849a9a883fe1fd697278bd8d49585">NJB_Error_Dump</a>(njb,stderr);
<span class="keywordflow">return</span> 1;
}
<span class="keywordflow">if</span> (<a name="a14"></a><a class="code" href="group__basic.html#g023eb258743b5961ec1b85cbd62a55cb">NJB_Capture</a>(njb) == -1) {
<a class="code" href="group__internals.html#ge9b849a9a883fe1fd697278bd8d49585">NJB_Error_Dump</a>(njb,stderr);
<span class="keywordflow">return</span> 1;
}
time = <a name="a15"></a><a class="code" href="group__timeapi.html#gb81e4b0ec40afa88e68334d89ae3ba44">NJB_Get_Time</a>(njb);
printf(<span class="stringliteral">"The time on the jukebox is:\n"</span>);
dumptime(time);
printf(<span class="stringliteral">"\nNew time (old values preserved if left blank):\n"</span>);
<span class="keywordflow">if</span> ( (pnum= prompt(<span class="stringliteral">"Year:"</span>, num, 80, 0)) == NULL ) <span class="keywordflow">return</span> 1;
<span class="keywordflow">if</span> ( strlen(pnum) ) {
time-><a class="code" href="structnjb__time__struct.html#ce156e46767b197b844936654dffb739">year</a>= (u_int16_t) strtoul(pnum, 0, 10);
}
<span class="keywordflow">if</span> ( (pnum= prompt(<span class="stringliteral">"Month (1-12):"</span>, num, 80, 0)) == NULL ) <span class="keywordflow">return</span> 1;
<span class="keywordflow">if</span> ( strlen(pnum) ) {
time-><a class="code" href="structnjb__time__struct.html#e41964a3348673cdd219b847f886bbf9">month</a>= (u_int16_t) strtoul(pnum, 0, 10);
}
<span class="keywordflow">if</span> ( (pnum= prompt(<span class="stringliteral">"Day:"</span>, num, 80, 0)) == NULL ) <span class="keywordflow">return</span> 1;
<span class="keywordflow">if</span> ( strlen(pnum) ) {
time-><a class="code" href="structnjb__time__struct.html#f8099ff42d8ebd590e33f676fcc2e6b0">day</a>= (u_int16_t) strtoul(pnum, 0, 10);
}
<span class="keywordflow">if</span> ( (pnum= prompt(<span class="stringliteral">"Weekday (0-6):"</span>, num, 80, 0)) == NULL ) <span class="keywordflow">return</span> 1;
<span class="keywordflow">if</span> ( strlen(pnum) ) {
time-><a class="code" href="structnjb__time__struct.html#227a86206933473fc61798d4d5e37683">weekday</a>= (u_int16_t) strtoul(pnum, 0, 10);
}
<span class="keywordflow">if</span> ( (pnum= prompt(<span class="stringliteral">"Hours (0-23):"</span>, num, 80, 0)) == NULL ) <span class="keywordflow">return</span> 1;
<span class="keywordflow">if</span> ( strlen(pnum) ) {
time-><a class="code" href="structnjb__time__struct.html#3d1df33f2b06d60440f746d9735d6f0d">hours</a>= (u_int16_t) strtoul(pnum, 0, 10);
}
<span class="keywordflow">if</span> ( (pnum= prompt(<span class="stringliteral">"Minutes (0-59):"</span>, num, 80, 0)) == NULL ) <span class="keywordflow">return</span> 1;
<span class="keywordflow">if</span> ( strlen(pnum) ) {
time-><a class="code" href="structnjb__time__struct.html#ad6d440031c3816280d6584c9ae503eb">minutes</a>= (u_int16_t) strtoul(pnum, 0, 10);
}
<span class="keywordflow">if</span> ( (pnum= prompt(<span class="stringliteral">"Seconds (0-59):"</span>, num, 80, 0)) == NULL ) <span class="keywordflow">return</span> 1;
<span class="keywordflow">if</span> ( strlen(pnum) ) {
time-><a class="code" href="structnjb__time__struct.html#cd35e31eeac27b23ba9e34b646ded27d">seconds</a>= (u_int16_t) strtoul(pnum, 0, 10);
}
printf(<span class="stringliteral">"The time on the jukebox is being set to:\n"</span>);
dumptime(time);
<span class="keywordflow">if</span> (<a name="a16"></a><a class="code" href="group__timeapi.html#g257a1f0973dc7e3ed779eb55978de2a7">NJB_Set_Time</a>(njb, time) == -1) {
<a class="code" href="group__internals.html#ge9b849a9a883fe1fd697278bd8d49585">NJB_Error_Dump</a>(njb,stderr);
}
<a name="a17"></a><a class="code" href="group__timeapi.html#gd520b434c17f481c42bf12f487e632ae">NJB_Destroy_Time</a>(time);
<a name="a18"></a><a class="code" href="group__basic.html#g69d4034384f1bd033ed2c9ba7a9b32d4">NJB_Release</a>(njb);
<a name="a19"></a><a class="code" href="group__basic.html#g13a9c926c430f38f3a6535ecaaf3e9b9">NJB_Close</a>(njb);
<span class="keywordflow">return</span> 0;
}
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