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Annotation of 43BSD/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: 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: }

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