src/util/setscan.c

#ifndef lint
static const char       RCSid[] = "$Id: setscan.c,v 2.3 2003/06/27 11:32:12 schorsch Exp $";
#endif
/*
 * Convert angle ranges of the form a-b:s,c to discrete values
 */

#include <stdlib.h>
#include <ctype.h>

#include "setscan.h"

int
setscan(                        /* set up scan according to arg */
register ANGLE  *ang,
register char  *arg
)
{
        int  state = ',';
        int  start, finish, step;

        while (state) {
                switch (state) {
                case ',':
                        start = atoi(arg);
                        finish = start;
                        step = 1;
                        break;
                case '-':
                        finish = atoi(arg);
                        if (finish < start)
                                return(-1);
                        break;
                case ':':
                        step = atoi(arg);
                        break;
                default:
                        return(-1);
                }
                if (!isdigit(*arg))
                        return(-1);
                do
                        arg++;
                while (isdigit(*arg));
                state = *arg++;
                if (!state || state == ',')
                        while (start <= finish) {
                                *ang++ = start;
                                start += step;
                        }
        }
        *ang = AEND;
        return(0);
}
Revision:	2.4
Committed:	Fri Mar 26 23:34:23 2004 UTC (21 years, 7 months ago) by schorsch
Content type:	text/plain
Branch:	MAIN
CVS Tags:	rad5R4, rad5R2, rad5R3, rad5R0, rad5R1, rad4R2, rad3R7P2, rad3R7P1, rad6R0, rad4R1, rad4R0, rad3R6, rad3R6P1, rad3R8, rad3R9, rad4R2P1, rad4R2P2, HEAD
Changes since 2.3:	+2 -1 lines
Log Message:	Continued ANSIfication.
#	Content
1	#ifndef lint
2	static const char RCSid[] = "$Id: setscan.c,v 2.3 2003/06/27 11:32:12 schorsch Exp $";
3	#endif
4	/*
5	* Convert angle ranges of the form a-b:s,c to discrete values
6	*/
7
8	#include <stdlib.h>
9	#include <ctype.h>
10
11	#include "setscan.h"
12
13	int
14	setscan( /* set up scan according to arg */
15	register ANGLE *ang,
16	register char *arg
17	)
18	{
19	int state = ',';
20	int start, finish, step;
21
22	while (state) {
23	switch (state) {
24	case ',':
25	start = atoi(arg);
26	finish = start;
27	step = 1;
28	break;
29	case '-':
30	finish = atoi(arg);
31	if (finish < start)
32	return(-1);
33	break;
34	case ':':
35	step = atoi(arg);
36	break;
37	default:
38	return(-1);
39	}
40	if (!isdigit(*arg))
41	return(-1);
42	do
43	arg++;
44	while (isdigit(*arg));
45	state = *arg++;
46	if (!state \|\| state == ',')
47	while (start <= finish) {
48	*ang++ = start;
49	start += step;
50	}
51	}
52	*ang = AEND;
53	return(0);
54	}