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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: xscsize.c,v 1.2 1998/11/21 22:30:22 mdw Exp $ |
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4 | * |
5 | * Return X display size to shell script |
6 | * |
7 | * (c) 1998 Straylight/Edgeware |
8 | */ |
9 | |
10 | /*----- Licensing notice --------------------------------------------------* |
11 | * |
12 | * This file is part of the Edgeware X tools collection. |
13 | * |
14 | * X tools is free software; you can redistribute it and/or modify |
15 | * it under the terms of the GNU General Public License as published by |
16 | * the Free Software Foundation; either version 2 of the License, or |
17 | * (at your option) any later version. |
18 | * |
19 | * X tools is distributed in the hope that it will be useful, |
20 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
21 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
22 | * GNU General Public License for more details. |
23 | * |
24 | * You should have received a copy of the GNU General Public License |
25 | * along with X tools; if not, write to the Free Software Foundation, |
26 | * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
27 | */ |
28 | |
29 | /*----- Revision history --------------------------------------------------* |
30 | * |
31 | * $Log: xscsize.c,v $ |
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32 | * Revision 1.2 1998/11/21 22:30:22 mdw |
33 | * Support GNU-style long options throughout, and introduce proper help |
34 | * text to all programs. Update manual pages to match. |
35 | * |
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36 | * Revision 1.1 1998/11/16 23:00:49 mdw |
37 | * Initial versions. |
38 | * |
39 | */ |
40 | |
41 | /*----- Header files ------------------------------------------------------*/ |
42 | |
43 | #include <stdio.h> |
44 | #include <stdlib.h> |
45 | #include <string.h> |
46 | |
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47 | #include <X11/Xlib.h> |
48 | |
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49 | #include "mdwopt.h" |
50 | #include "quis.h" |
51 | |
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52 | /*----- Main code ---------------------------------------------------------*/ |
53 | |
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54 | static void version(FILE *fp) |
55 | { |
56 | fprintf(fp, "%s (xtoys version " VERSION ")\n", QUIS); |
57 | } |
58 | |
59 | static void usage(FILE *fp) |
60 | { |
61 | fprintf(fp, "Usage: %s [-bcx] [-d display]\n", QUIS); |
62 | } |
63 | |
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64 | int main(int argc, char *argv[]) |
65 | { |
66 | const char *display = 0; |
67 | unsigned f = 0; |
68 | unsigned long wd, ht; |
69 | |
70 | enum { |
71 | f_sh = 1, |
72 | f_csh = 2, |
73 | f_shell = 3, |
74 | f_export = 4 |
75 | }; |
76 | |
77 | /* --- Parse command line options --- */ |
78 | |
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79 | ego(argv[0]); |
80 | |
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81 | for (;;) { |
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82 | static struct option opt[] = { |
83 | { "help", 0, 0, 'h' }, |
84 | { "usage", 0, 0, 'u' }, |
85 | { "version", 0, 0, 'v' }, |
86 | { "display", required_argument, 0, 'd' }, |
87 | { "bourne-shell", 0, 0, 'b' }, |
88 | { "c-shell", 0, 0, 'c' }, |
89 | { "export", 0, 0, 'x' }, |
90 | { 0, 0, 0, 0 } |
91 | }; |
92 | |
93 | int i = getopt_long(argc, argv, "huv d:bcx", opt, 0); |
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94 | if (i < 0) |
95 | break; |
96 | switch (i) { |
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97 | case 'h': |
98 | version(stdout); |
99 | fputs("\n", stdout); |
100 | usage(stdout); |
101 | fputs( |
102 | "\n" |
103 | "Reads the size of the X root window and outputs it in a form suitable\n" |
104 | "for use as a shell assignment statement, defining variables XWIDTH and\n" |
105 | "XHEIGHT.\n" |
106 | "\n" |
107 | "Options:\n" |
108 | "\n" |
109 | "-h, --help Display this help text\n" |
110 | "-u, --usage Display a short usage summary\n" |
111 | "-v, --version Display the program's version number\n" |
112 | "\n" |
113 | "-d, --display=DISPLAY Choose X display to connect to\n" |
114 | "-b, --bourne-shell Output text suitable for a Bourne shell\n" |
115 | "-c, --c-shell Output text suitable for a C shell\n" |
116 | "-x, --export Export the variables into the environment\n", |
117 | stdout); |
118 | exit(0); |
119 | break; |
120 | case 'u': |
121 | usage(stdout); |
122 | exit(0); |
123 | break; |
124 | case 'v': |
125 | version(stdout); |
126 | exit(0); |
127 | break; |
128 | |
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129 | case 'd': |
130 | display = optarg; |
131 | break; |
132 | case 'b': |
133 | f |= f_sh; |
134 | break; |
135 | case 'c': |
136 | f |= f_csh; |
137 | break; |
138 | case 'x': |
139 | f |= f_export; |
140 | break; |
141 | default: |
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142 | usage(stderr); |
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143 | exit(EXIT_FAILURE); |
144 | break; |
145 | } |
146 | } |
147 | |
148 | /* --- Sort out the shell type --- * |
149 | * |
150 | * If the shell name contains the string `csh' then assume it's a C shell. |
151 | * Otherwise assume it's Bourne. This seems to work in practice. |
152 | */ |
153 | |
154 | if (!(f & f_shell)) { |
155 | const char *s = getenv("SHELL"); |
156 | if (!s) |
157 | f |= f_sh; |
158 | if (strstr(s, "csh")) |
159 | f |= f_csh; |
160 | else |
161 | f |= f_sh; |
162 | } |
163 | |
164 | if ((f & f_sh) && (f & f_csh)) { |
165 | fprintf(stderr, "xscsize: make your mind up about your shell type\n"); |
166 | exit(EXIT_FAILURE); |
167 | } |
168 | |
169 | /* --- Get the important information --- */ |
170 | |
171 | { |
172 | Display *dpy = XOpenDisplay(display); |
173 | int sc; |
174 | if (!dpy) { |
175 | fprintf(stderr, "xscsize: couldn't open display\n"); |
176 | exit(EXIT_FAILURE); |
177 | } |
178 | sc = DefaultScreen(dpy); |
179 | wd = DisplayWidth(dpy, sc); |
180 | ht = DisplayHeight(dpy, sc); |
181 | XCloseDisplay(dpy); |
182 | } |
183 | |
184 | /* --- Do the output thing --- */ |
185 | |
186 | if (f & f_sh) { |
187 | printf("XWIDTH=%lu XHEIGHT=%lu", wd, ht); |
188 | if (f & f_export) |
189 | printf("; export XWIDTH XHEIGHT"); |
190 | } |
191 | if (f & f_csh) { |
192 | if (f & f_export) |
193 | printf("setenv XWIDTH %lu; setenv XHEIGHT %lu", wd, ht); |
194 | else |
195 | printf("set XWIDTH=%lu XHEIGHT=%lu", wd, ht); |
196 | } |
197 | putchar('\n'); |
198 | |
199 | /* --- Done --- */ |
200 | |
201 | return (0); |
202 | } |
203 | |
204 | /*----- That's all, folks -------------------------------------------------*/ |