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Annotation of researchv10no/cmd/spitbol/arg2scb.c, revision 1.1.1.1

1.1       root        1: 
                      2: /*
                      3:        arg2scb( req,argc,argv,scptr ) returns the req-th argument pointed
                      4:        to by the argv array in the scblk provided. if req is out of range
                      5:        -1 is returned; otherwise the argument's length is returned.
                      6: */
                      7: 
                      8: #include "spitblks.h"
                      9: 
                     10: int    arg2scb( req,argc,argv,scptr )
                     11: 
                     12: int    req;
                     13: int    argc;
                     14: char   *argv[];
                     15: struct scblk   *scptr;
                     16: 
                     17: {
                     18:        int     ch, i = 0, maxlen;
                     19:        register char   *argcp, *scbcp;
                     20: 
                     21:        if ( (req < 0) || (req >= argc) )
                     22:                return  -1;
                     23: 
                     24:        argcp   = argv[req];
                     25:        maxlen  = scptr->len - 1;
                     26:        scbcp   = scptr->str;
                     27:        while ( i < maxlen ) {
                     28:                ch      = *argcp++;
                     29:                if (ch == 0)
                     30:                        break;
                     31:                *scbcp++ = ch;
                     32:                i++;
                     33:        }
                     34:        scptr->len = i;
                     35:        return  i;
                     36: }

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