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1 | /* -*-c-*- |
2 | * |
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3 | * $Id: xscsize.c,v 1.3 1998/12/11 09:50:05 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 1.3 1998/12/11 09:50:05 mdw |
33 | * Minor modifications to work with mLib and mgLib. |
34 | * |
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35 | * Revision 1.2 1998/11/21 22:30:22 mdw |
36 | * Support GNU-style long options throughout, and introduce proper help |
37 | * text to all programs. Update manual pages to match. |
38 | * |
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39 | * Revision 1.1 1998/11/16 23:00:49 mdw |
40 | * Initial versions. |
41 | * |
42 | */ |
43 | |
44 | /*----- Header files ------------------------------------------------------*/ |
45 | |
46 | #include <stdio.h> |
47 | #include <stdlib.h> |
48 | #include <string.h> |
49 | |
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50 | #include <X11/Xlib.h> |
51 | |
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52 | #include <mLib/mdwopt.h> |
53 | #include <mLib/quis.h> |
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54 | |
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55 | /*----- Main code ---------------------------------------------------------*/ |
56 | |
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57 | static void version(FILE *fp) |
58 | { |
59 | fprintf(fp, "%s (xtoys version " VERSION ")\n", QUIS); |
60 | } |
61 | |
62 | static void usage(FILE *fp) |
63 | { |
64 | fprintf(fp, "Usage: %s [-bcx] [-d display]\n", QUIS); |
65 | } |
66 | |
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67 | int main(int argc, char *argv[]) |
68 | { |
69 | const char *display = 0; |
70 | unsigned f = 0; |
71 | unsigned long wd, ht; |
72 | |
73 | enum { |
74 | f_sh = 1, |
75 | f_csh = 2, |
76 | f_shell = 3, |
77 | f_export = 4 |
78 | }; |
79 | |
80 | /* --- Parse command line options --- */ |
81 | |
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82 | ego(argv[0]); |
83 | |
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84 | for (;;) { |
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85 | static struct option opt[] = { |
86 | { "help", 0, 0, 'h' }, |
87 | { "usage", 0, 0, 'u' }, |
88 | { "version", 0, 0, 'v' }, |
89 | { "display", required_argument, 0, 'd' }, |
90 | { "bourne-shell", 0, 0, 'b' }, |
91 | { "c-shell", 0, 0, 'c' }, |
92 | { "export", 0, 0, 'x' }, |
93 | { 0, 0, 0, 0 } |
94 | }; |
95 | |
96 | int i = getopt_long(argc, argv, "huv d:bcx", opt, 0); |
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97 | if (i < 0) |
98 | break; |
99 | switch (i) { |
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100 | case 'h': |
101 | version(stdout); |
102 | fputs("\n", stdout); |
103 | usage(stdout); |
104 | fputs( |
105 | "\n" |
106 | "Reads the size of the X root window and outputs it in a form suitable\n" |
107 | "for use as a shell assignment statement, defining variables XWIDTH and\n" |
108 | "XHEIGHT.\n" |
109 | "\n" |
110 | "Options:\n" |
111 | "\n" |
112 | "-h, --help Display this help text\n" |
113 | "-u, --usage Display a short usage summary\n" |
114 | "-v, --version Display the program's version number\n" |
115 | "\n" |
116 | "-d, --display=DISPLAY Choose X display to connect to\n" |
117 | "-b, --bourne-shell Output text suitable for a Bourne shell\n" |
118 | "-c, --c-shell Output text suitable for a C shell\n" |
119 | "-x, --export Export the variables into the environment\n", |
120 | stdout); |
121 | exit(0); |
122 | break; |
123 | case 'u': |
124 | usage(stdout); |
125 | exit(0); |
126 | break; |
127 | case 'v': |
128 | version(stdout); |
129 | exit(0); |
130 | break; |
131 | |
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132 | case 'd': |
133 | display = optarg; |
134 | break; |
135 | case 'b': |
136 | f |= f_sh; |
137 | break; |
138 | case 'c': |
139 | f |= f_csh; |
140 | break; |
141 | case 'x': |
142 | f |= f_export; |
143 | break; |
144 | default: |
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145 | usage(stderr); |
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146 | exit(EXIT_FAILURE); |
147 | break; |
148 | } |
149 | } |
150 | |
151 | /* --- Sort out the shell type --- * |
152 | * |
153 | * If the shell name contains the string `csh' then assume it's a C shell. |
154 | * Otherwise assume it's Bourne. This seems to work in practice. |
155 | */ |
156 | |
157 | if (!(f & f_shell)) { |
158 | const char *s = getenv("SHELL"); |
159 | if (!s) |
160 | f |= f_sh; |
161 | if (strstr(s, "csh")) |
162 | f |= f_csh; |
163 | else |
164 | f |= f_sh; |
165 | } |
166 | |
167 | if ((f & f_sh) && (f & f_csh)) { |
168 | fprintf(stderr, "xscsize: make your mind up about your shell type\n"); |
169 | exit(EXIT_FAILURE); |
170 | } |
171 | |
172 | /* --- Get the important information --- */ |
173 | |
174 | { |
175 | Display *dpy = XOpenDisplay(display); |
176 | int sc; |
177 | if (!dpy) { |
178 | fprintf(stderr, "xscsize: couldn't open display\n"); |
179 | exit(EXIT_FAILURE); |
180 | } |
181 | sc = DefaultScreen(dpy); |
182 | wd = DisplayWidth(dpy, sc); |
183 | ht = DisplayHeight(dpy, sc); |
184 | XCloseDisplay(dpy); |
185 | } |
186 | |
187 | /* --- Do the output thing --- */ |
188 | |
189 | if (f & f_sh) { |
190 | printf("XWIDTH=%lu XHEIGHT=%lu", wd, ht); |
191 | if (f & f_export) |
192 | printf("; export XWIDTH XHEIGHT"); |
193 | } |
194 | if (f & f_csh) { |
195 | if (f & f_export) |
196 | printf("setenv XWIDTH %lu; setenv XHEIGHT %lu", wd, ht); |
197 | else |
198 | printf("set XWIDTH=%lu XHEIGHT=%lu", wd, ht); |
199 | } |
200 | putchar('\n'); |
201 | |
202 | /* --- Done --- */ |
203 | |
204 | return (0); |
205 | } |
206 | |
207 | /*----- That's all, folks -------------------------------------------------*/ |