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

1.1       root        1: 
                      2: 
                      3: /*
                      4:        arg2scb( req,argc,argv,scptr ) returns the req-th argument pointed
                      5:        to by the argv array in the scblk provided. if req is out of range
                      6:         -1 is returned; otherwise the argument's length is returned.
                      7: */
                      8: 
                      9: #include "spitblks.h"
                     10: 
                     11: int    arg2scb( req,argc,argv,scptr )
                     12: 
                     13: int    req;
                     14: int    argc;
                     15: char   *argv[];
                     16: struct scblk   *scptr;
                     17: 
                     18: {
                     19:        int     ch, i = 0, maxlen;
                     20:        register char   *argcp, *scbcp;
                     21: 
                     22:        if ( (req < 0) || (req >= argc) )
                     23:                return  -1;
                     24: 
                     25:        argcp   = argv[req];
                     26:        maxlen  = scptr->len - 1;
                     27:        scbcp   = scptr->str;
                     28:        while ( i < maxlen ) {
                     29:                ch      = *argcp++;
                     30:                if (ch == 0)
                     31:                        break;
                     32:                *scbcp++ = ch;
                     33:                i++;
                     34:        }
                     35:        scptr->len = i;
                     36:        return  i;
                     37: }
                     38: 

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