getsubopt.c raw

   1  #include <stdlib.h>
   2  #include <string.h>
   3  
   4  int getsubopt(char **opt, char *const *keys, char **val)
   5  {
   6  	char *s = *opt;
   7  	int i;
   8  
   9  	*val = NULL;
  10  	*opt = strchr(s, ',');
  11  	if (*opt) *(*opt)++ = 0;
  12  	else *opt = s + strlen(s);
  13  
  14  	for (i=0; keys[i]; i++) {
  15  		size_t l = strlen(keys[i]);
  16  		if (strncmp(keys[i], s, l)) continue;
  17  		if (s[l] == '=')
  18  			*val = s + l + 1;
  19  		else if (s[l]) continue;
  20  		return i;
  21  	}
  22  	return -1;
  23  }
  24