4.3BSD - /usr/src/new/mh/sbr/brkstring.c

   1: /* brkstring.c - break string into an array of strings */
   2: 
   3: #include "../h/mh.h"
   4: 
   5: 
   6: static char *broken[MAXARGS+1]; /* array of substring start addresses */
   7: 
   8: char  **brkstring (strg, brksep, brkterm)
   9: register char  *strg;
  10: register char  *brksep,
  11:                *brkterm;
  12: {
  13:     register int    bi;
  14:     register char   c,
  15:                    *sp;
  16: 
  17:     sp = strg;          /* scan string, replacing separators with
  18: 				   zeroes */
  19: 
  20:     for (bi = 0; bi < MAXARGS; bi++) {
  21:                 /* and entering start addrs in "broken" */
  22:     while (brkany (c = *sp, brksep))
  23:         *sp++ = 0;
  24:     if (!c || brkany (c, brkterm)) {
  25:         *sp = 0;
  26:         broken[bi] = 0;
  27:         return broken;  /* terminator found, finish up */
  28:     }
  29: 
  30:     broken[bi] = sp;    /* set next start addr */
  31:     while ((c = *++sp) && !brkany (c, brksep) && !brkany (c, brkterm))
  32:         continue;
  33:     }
  34:     broken[MAXARGS] = 0;    /* reached limit of MAXARGS substrings */
  35: 
  36:     return broken;
  37: }
  38: 
  39: 
  40: static  brkany (chr, strg)  /* returns 1 if chr in strg, 0 otherwise  */
  41: register char   chr,
  42:                *strg;
  43: {
  44:     register char  *sp;
  45: 
  46:     if (strg)
  47:     for (sp = strg; *sp; sp++)
  48:         if (chr == *sp)
  49:         return 1;
  50:     return 0;
  51: }

Defined functions

Defined variables