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Annotation of 43BSDReno/contrib/mh/sbr/brkstring.c, revision 1.1.1.1

1.1       root        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: static int brkany();
                      9: 
                     10: char **
                     11: brkstring(strg, brksep, brkterm)
                     12:        register char *strg;
                     13:        register char *brksep, *brkterm;
                     14: {
                     15:     register int    bi;
                     16:     register char   c,
                     17:                    *sp;
                     18: 
                     19:     sp = strg;                 /* scan string, replacing separators with
                     20:                                   zeroes */
                     21: 
                     22:     for (bi = 0; bi < MAXARGS; bi++) {
                     23:                                /* and entering start addrs in "broken" */
                     24:        while (brkany (c = *sp, brksep))
                     25:            *sp++ = 0;
                     26:        if (!c || brkany (c, brkterm)) {
                     27:            *sp = 0;
                     28:            broken[bi] = 0;
                     29:            return broken;      /* terminator found, finish up */
                     30:        }
                     31: 
                     32:        broken[bi] = sp;        /* set next start addr */
                     33:        while ((c = *++sp) && !brkany (c, brksep) && !brkany (c, brkterm))
                     34:                continue;
                     35:     }
                     36:     broken[MAXARGS] = 0;       /* reached limit of MAXARGS substrings */
                     37: 
                     38:     return broken;
                     39: }
                     40: 
                     41: 
                     42: static int
                     43: brkany(chr, strg)      /* returns 1 if chr in strg, 0 otherwise  */
                     44:        register char chr, *strg;
                     45: {
                     46:     register char  *sp;
                     47: 
                     48:     if (strg)
                     49:        for (sp = strg; *sp; sp++)
                     50:            if (chr == *sp)
                     51:                return 1;
                     52:     return 0;
                     53: }

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