1 #include <u.h>
2 #include <libc.h>
3 #include <draw.h>
4 #include <memdraw.h>
5 #include "devdraw.h"
6 
7 int
8 parsewinsize(char *s, Rectangle *r, int *havemin)
9 {
10 	char c, *os;
11 	int i, j, k, l;
12 
13 	os = s;
14 	*havemin = 0;
15 	*r = Rect(0,0,0,0);
16 	if(!isdigit((uchar)*s))
17 		goto oops;
18 	i = strtol(s, &s, 0);
19 	if(*s == 'x'){
20 		s++;
21 		if(!isdigit((uchar)*s))
22 			goto oops;
23 		j = strtol(s, &s, 0);
24 		r->max.x = i;
25 		r->max.y = j;
26 		if(*s == 0)
27 			return 0;
28 		if(*s != '@')
29 			goto oops;
30 
31 		s++;
32 		if(!isdigit((uchar)*s))
33 			goto oops;
34 		i = strtol(s, &s, 0);
35 		if(*s != ',' && *s != ' ')
36 			goto oops;
37 		s++;
38 		if(!isdigit((uchar)*s))
39 			goto oops;
40 		j = strtol(s, &s, 0);
41 		if(*s != 0)
42 			goto oops;
43 		*r = rectaddpt(*r, Pt(i,j));
44 		*havemin = 1;
45 		return 0;
46 	}
47 
48 	c = *s;
49 	if(c != ' ' && c != ',')
50 		goto oops;
51 	s++;
52 	if(!isdigit((uchar)*s))
53 		goto oops;
54 	j = strtol(s, &s, 0);
55 	if(*s != c)
56 		goto oops;
57 	s++;
58 	if(!isdigit((uchar)*s))
59 		goto oops;
60 	k = strtol(s, &s, 0);
61 	if(*s != c)
62 		goto oops;
63 	s++;
64 	if(!isdigit((uchar)*s))
65 		goto oops;
66 	l = strtol(s, &s, 0);
67 	if(*s != 0)
68 		goto oops;
69 	*r = Rect(i,j,k,l);
70 	*havemin = 1;
71 	return 0;
72 
73 oops:
74 	werrstr("bad syntax in window size '%s'", os);
75 	return -1;
76 }