libnjb: setowner.c

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# setowner.c

    00001 #include "common.h"
    00002 #include <string.h>
    00003
    00004 static char *prompt (const char *prompt, char *buffer, size_t bufsz, int required)
    00005 {
    00006   char *cp, *bp;
    00007
    00008   while (1) {
    00009     fprintf(stdout, "%s> ", prompt);
    00010     if ( fgets(buffer, bufsz, stdin) == NULL ) {
    00011       if (ferror(stdin)) {
    00012         perror("fgets");
    00013       } else {
    00014         fprintf(stderr, "EOF on stdin\n");
    00015       }
    00016       return NULL;
    00017     }
    00018
    00019     cp = strrchr(buffer, '\n');
    00020     if ( cp != NULL ) *cp= '\0';
    00021
    00022     bp = buffer;
    00023     while ( bp != cp ) {
    00024       if ( *bp != ' ' ) return bp;
    00025       bp++;
    00026     }
    00027
    00028     if (! required) return bp;
    00029   }
    00030 }
    00031
    00032 int main (int argc, char **argv)
    00033 {
    00034   njb_t njbs[NJB_MAX_DEVICES], *njb;
    00035   int n, opt, debug;
    00036   char newowner[80];
    00037   char *pown;
    00038   char *ownerstring;
    00039   extern char *optarg;
    00040   char *lang;
    00041
    00042   debug = 0;
    00043   while ( (opt = getopt(argc, argv, "D:")) != -1 ) {
    00044     switch (opt) {
    00045     case 'D':
    00046       debug= atoi(optarg);
    00047       break;
    00048     default:
    00049       fprintf(stderr, "usage: %s [ -D debuglvl ]\n", argv[0]);
    00050       return 1;
    00051     }
    00052   }
    00053
    00054   if ( debug ) NJB_Set_Debug(debug);
    00055
    00056   /*
    00057    * Check environment variables $LANG and $LC_CTYPE
    00058    * to see if we want to support UTF-8 unicode
    00059    * $LANG = "xx_XX.UTF-8" or $LC_CTYPE = "?"
    00060    * trigger unicode support.
    00061    */
    00062   lang = getenv("LANG");
    00063   if (lang != NULL) {
    00064     if (strlen(lang) > 5) {
    00065       if (!strcmp(&lang[strlen(lang)-5], "UTF-8")) {
    00066         NJB_Set_Unicode(NJB_UC_UTF8);
    00067       }
    00068     }
    00069   }
    00070
    00071   if (NJB_Discover(njbs, 0, &n) == -1) {
    00072     fprintf(stderr, "could not locate any jukeboxes\n");
    00073     return 1;
    00074   }
    00075
    00076   if ( n == 0 ) {
    00077     fprintf(stderr, "No NJB devices found\n");
    00078     return 1;
    00079   }
    00080
    00081   njb = njbs;
    00082   if ( NJB_Open(njb) == -1 ) {
    00083     NJB_Error_Dump(njb,stderr);
    00084     return 1;
    00085   }
    00086
    00087   if ( (pown = prompt("New ownerstring", newowner, 80, 1)) == NULL ) return 1;
    00088   if ( NJB_Set_Owner_String (njb, newowner) == -1 ) {
    00089     NJB_Error_Dump(njb,stderr);
    00090     return 1;
    00091   }
    00092
    00093   ownerstring = NJB_Get_Owner_String(njb);
    00094   printf("New owner string: %s\n", ownerstring);
    00095   free(ownerstring);
    00096
    00097   NJB_Close(njb);
    00098   return 0;
    00099 }