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1.1 root 1: /*
2: * Copyright 1985, Cognition Inc.
3: * This software is not supported by Cognition Inc. and is
4: * provided "as is". To keep the X revolution growing, please forward
5: * enhancements and bug fixes to anyone who is interested.
6: */
7: #ifndef lint
8: static char *rcsid_xshell_c = "$Header: xutils.c,v 10.3 86/02/01 16:19:44 tony Rel $";
9: #endif
10:
11: #include <stdio.h>
12: #include <strings.h>
13: #include <ctype.h>
14:
15: /****************************************************************************
16: * XParse_Window_Geometry - parses a standard X dimension string like
17: *
18: * =WIDTHxHEIGHT+XOFF+YOFF
19: * =WIDTHxHEIGHT-XOFF-YOFF
20: *
21: * and returns 1 if everything goes okay, else 0 so that you can use the
22: * routine in an if statement. Note that it will not touch the integer input
23: * arguments but does mung the geometry.
24: */
25:
26:
27: #define bomb(msg) return(0)
28:
29: int XParse_Window_Geometry (geometry, widthp, heightp,
30: xsignp, xoffp, ysignp, yoffp)
31: char *geometry;
32: int *widthp, *heightp, *xsignp, *xoffp, *ysignp, *yoffp;
33: {
34: register char *cp;
35: int xoff, yoff, xsign, ysign, width, height;
36:
37: xoff = yoff = -1; /* put it in the lower right hand corner */
38: xsign = ysign = 0; /* so that we can see if it is set or not */
39: width = height = -1; /* ditto */
40:
41: if (geometry != (char *) NULL) {/* normal =XxY+w+h or =XxY-w-h etc. */
42: if (*geometry == '=') geometry++; /* skip = sign */
43: switch (*geometry) { /* what is the first char we see? */
44: case '+': /* it is the positive XOFF */
45: xsign = 1;
46: goto get_xoff;
47: case '-': /* it is the negative XOFF */
48: xsign = -1;
49: goto get_xoff;
50: case 'x': /* it is the HEIGHT */
51: goto get_height;
52: default: /* it is the WIDTH */
53: break;
54: } /*end switch*/
55: cp = index (geometry, 'x'); /* find the x */
56: if (cp == (char *) NULL) bomb ("width");
57: *cp = '\0';
58: width = atoi (geometry);
59: geometry = cp; /* skip to WIDTH */
60: get_height:
61: for (cp = ++geometry; isdigit (*cp); cp++) ;
62: switch (*cp) {
63: case '\0':
64: height = atoi (geometry);
65: goto done;
66: case '+':
67: xsign = 1;
68: break;
69: case '-':
70: xsign = -1;
71: break;
72: default:
73: bomb ("height");
74: } /*end switch*/
75: *cp = '\0';
76: height = atoi (geometry);
77: geometry = cp;
78: get_xoff:
79: for (cp = ++geometry; isdigit (*cp); cp++) ;
80: switch (*cp) {
81: case '\0':
82: xoff = atoi (geometry);
83: goto done;
84: case '+':
85: ysign = 1;
86: break;
87: case '-':
88: ysign = -1;
89: break;
90: default:
91: bomb ("X position");
92: } /*end switch*/
93: *cp = '\0';
94: xoff = atoi (geometry);
95: geometry = cp;
96: for (cp = ++geometry; isdigit (*cp); cp++) ;
97: if (*cp != '\0') bomb ("Y position");
98: yoff = atoi (geometry);
99: } /*end if*/
100:
101: done:
102: if (width != -1) *widthp = width;
103: if (height != -1) *heightp = height;
104:
105: if (xsign != 0) *xsignp = xsign;
106: if (ysign != 0) *ysignp = ysign;
107:
108: if (xoff != -1) *xoffp = xoff;
109: if (yoff != -1) *yoffp = yoff;
110:
111: return (1);
112:
113: } /*end XParse_Window_Geometry*/
114:
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