Return to trim.c CVS log

Up to [CSRG BSD Unix] / 43BSD / contrib / icon / functions

Annotation of 43BSD/contrib/icon/functions/trim.c, revision 1.1.1.1

1.1       root        1: #include "../h/rt.h"
                      2: 
                      3: /*
                      4:  * trim(s,c) - trim trailing characters in c from s.
                      5:  */
                      6: 
                      7: Xtrim(nargs, arg2, arg1, arg0)
                      8: int nargs;
                      9: struct descrip arg2, arg1, arg0;
                     10:    {
                     11:    char *sloc;
                     12:    char sbuf[MAXSTRING];
                     13:    int *cs, csbuf[CSETSIZE];
                     14:    static int spcset[CSETSIZE] = /* just a blank */
                     15:       cset_display(0, 0, 01, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
                     16: 
                     17:    /*
                     18:     * s must be a string; c defaults to a cset containing a blank.
                     19:     */
                     20:    if (cvstr(&arg1, sbuf) == NULL)
                     21:       runerr(103, &arg1);
                     22:    defcset(&arg2, &cs, csbuf, spcset);
                     23: 
                     24:    /*
                     25:     * Start at the end of s and then back up until a character that is
                     26:     *  not in c is found.  The actual trimming is done by having a descriptor
                     27:     *  that points at the string of s, but has a reduced length.
                     28:     */
                     29:    arg0 = arg1;
                     30:    sloc = STRLOC(arg1) + STRLEN(arg1) - 1;
                     31:    while (sloc >= STRLOC(arg1) && tstb(*sloc, cs)) {
                     32:       sloc--;
                     33:       STRLEN(arg0)--;
                     34:       }
                     35:    }
                     36: 
                     37: Procblock(trim,2)

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.