compat/snprintf.c

   1 #include "../git-compat-util.h"
   2
   3 #undef vsnprintf
   4 int git_vsnprintf(char *str, size_t maxsize, const char *format, va_list ap)
   5 {
   6         char *s;
   7         int ret;
   8
   9         ret = vsnprintf(str, maxsize, format, ap);
  10         if (ret != -1)
  11                 return ret;
  12
  13         s = NULL;
  14         if (maxsize < 128)
  15                 maxsize = 128;
  16
  17         while (ret == -1) {
  18                 maxsize *= 4;
  19                 str = realloc(s, maxsize);
  20                 if (! str)
  21                         break;
  22                 s = str;
  23                 ret = vsnprintf(str, maxsize, format, ap);
  24         }
  25         free(s);
  26         return ret;
  27 }
  28
  29 int git_snprintf(char *str, size_t maxsize, const char *format, ...)
  30 {
  31         va_list ap;
  32         int ret;
  33
  34         va_start(ap, format);
  35         ret = git_vsnprintf(str, maxsize, format, ap);
  36         va_end(ap);
  37
  38         return ret;
  39 }
  40