sys/src/cmd/mk/match.c

   1 #include        "mk.h"
   2
   3 int
   4 match(char *name, char *template, char *stem)
   5 {
   6         Rune r;
   7         int n;
   8
   9         while(*name && *template){
  10                 n = chartorune(&r, template);
  11                 if (PERCENT(r))
  12                         break;
  13                 while (n--)
  14                         if(*name++ != *template++)
  15                                 return 0;
  16         }
  17         if(!PERCENT(*template))
  18                 return 0;
  19         n = strlen(name)-strlen(template+1);
  20         if (n < 0)
  21                 return 0;
  22         if (strcmp(template+1, name+n))
  23                 return 0;
  24         strncpy(stem, name, n);
  25         stem[n] = 0;
  26         if(*template == '&')
  27                 return !charin(stem, "./");
  28         return 1;
  29 }
  30
  31 void
  32 subst(char *stem, char *template, char *dest, int dlen)
  33 {
  34         Rune r;
  35         char *s, *e;
  36         int n;
  37
  38         e = dest+dlen-1;
  39         while(*template){
  40                 n = chartorune(&r, template);
  41                 if (PERCENT(r)) {
  42                         template += n;
  43                         for (s = stem; *s; s++)
  44                                 if(dest < e)
  45                                         *dest++ = *s;
  46                 } else
  47                         while (n--){
  48                                 if(dest < e)
  49                                         *dest++ = *template;
  50                                 template++;
  51                         }
  52         }
  53         *dest = 0;
  54 }