src/utils.c

   1 ////////////////////////////////////////////////////////////////////////////////
   2 // utilities
   3 static void trimstr (char *s) {
   4   char *e;
   5   //
   6   while (*s && isspace(*s)) ++s;
   7   for (e = s+strlen(s); e > s; --e) if (!isspace(e[-1])) break;
   8   if (e <= s) *s = 0; else *e = 0;
   9 }
  10
  11
  12 static char *SPrintfVA (const char *fmt, va_list vaorig) {
  13   char *buf = NULL;
  14   int olen, len = 128;
  15   //
  16   buf = malloc(len);
  17   if (buf == NULL) { fprintf(stderr, "\nFATAL: out of memory!\n"); abort(); }
  18   for (;;) {
  19     char *nb;
  20     va_list va;
  21     //
  22     va_copy(va, vaorig);
  23     olen = vsnprintf(buf, len, fmt, va);
  24     va_end(va);
  25     if (olen >= 0 && olen < len) return buf;
  26     if (olen < 0) olen = len*2-1;
  27     nb = realloc(buf, olen+1);
  28     if (nb == NULL) { fprintf(stderr, "\nFATAL: out of memory!\n"); abort(); }
  29     buf = nb;
  30     len = olen+1;
  31   }
  32 }
  33
  34
  35 static __attribute__((format(printf,1,2))) char *SPrintf (const char *fmt, ...) {
  36   char *buf = NULL;
  37   va_list va;
  38   //
  39   va_start(va, fmt);
  40   buf = SPrintfVA(fmt, va);
  41   va_end(va);
  42   return buf;
  43 }
  44
  45
  46 K8TERM_API __attribute__((noreturn)) __attribute__((format(printf,1,2))) void k8t_die (const char *errstr, ...) {
  47   va_list ap;
  48   //
  49   fprintf(stderr, "FATAL: ");
  50   va_start(ap, errstr);
  51   vfprintf(stderr, errstr, ap);
  52   va_end(ap);
  53   fprintf(stderr, "\n");
  54   exit(EXIT_FAILURE);
  55 }