| 1 | /* -*-c-*- |
| 2 | * |
| 3 | * $Id: xscsize.c,v 1.6 2004/04/08 01:36:29 mdw Exp $ |
| 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 | /*----- Header files ------------------------------------------------------*/ |
| 30 | |
| 31 | #include <stdio.h> |
| 32 | #include <stdlib.h> |
| 33 | #include <string.h> |
| 34 | |
| 35 | #include <X11/Xlib.h> |
| 36 | |
| 37 | #include <mLib/mdwopt.h> |
| 38 | #include <mLib/quis.h> |
| 39 | |
| 40 | /*----- Main code ---------------------------------------------------------*/ |
| 41 | |
| 42 | static void version(FILE *fp) |
| 43 | { |
| 44 | fprintf(fp, "%s (xtoys version " VERSION ")\n", QUIS); |
| 45 | } |
| 46 | |
| 47 | static void usage(FILE *fp) |
| 48 | { |
| 49 | fprintf(fp, "Usage: %s [-bcx] [-d display]\n", QUIS); |
| 50 | } |
| 51 | |
| 52 | int main(int argc, char *argv[]) |
| 53 | { |
| 54 | const char *display = 0; |
| 55 | unsigned f = 0; |
| 56 | unsigned long wd, ht; |
| 57 | |
| 58 | #define f_sh 1u |
| 59 | #define f_csh 2u |
| 60 | #define f_shell 3u |
| 61 | #define f_export 4u |
| 62 | |
| 63 | /* --- Parse command line options --- */ |
| 64 | |
| 65 | ego(argv[0]); |
| 66 | |
| 67 | for (;;) { |
| 68 | static struct option opt[] = { |
| 69 | { "help", 0, 0, 'h' }, |
| 70 | { "usage", 0, 0, 'u' }, |
| 71 | { "version", 0, 0, 'v' }, |
| 72 | { "display", OPTF_ARGREQ, 0, 'd' }, |
| 73 | { "bourne-shell", 0, 0, 'b' }, |
| 74 | { "c-shell", 0, 0, 'c' }, |
| 75 | { "export", 0, 0, 'x' }, |
| 76 | { 0, 0, 0, 0 } |
| 77 | }; |
| 78 | |
| 79 | int i = getopt_long(argc, argv, "huv d:bcx", opt, 0); |
| 80 | if (i < 0) |
| 81 | break; |
| 82 | switch (i) { |
| 83 | case 'h': |
| 84 | version(stdout); |
| 85 | fputs("\n", stdout); |
| 86 | usage(stdout); |
| 87 | fputs( |
| 88 | "\n" |
| 89 | "Reads the size of the X root window and outputs it in a form suitable\n" |
| 90 | "for use as a shell assignment statement, defining variables XWIDTH and\n" |
| 91 | "XHEIGHT.\n" |
| 92 | "\n" |
| 93 | "Options:\n" |
| 94 | "\n" |
| 95 | "-h, --help Display this help text\n" |
| 96 | "-u, --usage Display a short usage summary\n" |
| 97 | "-v, --version Display the program's version number\n" |
| 98 | "\n" |
| 99 | "-d, --display=DISPLAY Choose X display to connect to\n" |
| 100 | "-b, --bourne-shell Output text suitable for a Bourne shell\n" |
| 101 | "-c, --c-shell Output text suitable for a C shell\n" |
| 102 | "-x, --export Export the variables into the environment\n", |
| 103 | stdout); |
| 104 | exit(0); |
| 105 | break; |
| 106 | case 'u': |
| 107 | usage(stdout); |
| 108 | exit(0); |
| 109 | break; |
| 110 | case 'v': |
| 111 | version(stdout); |
| 112 | exit(0); |
| 113 | break; |
| 114 | |
| 115 | case 'd': |
| 116 | display = optarg; |
| 117 | break; |
| 118 | case 'b': |
| 119 | f |= f_sh; |
| 120 | break; |
| 121 | case 'c': |
| 122 | f |= f_csh; |
| 123 | break; |
| 124 | case 'x': |
| 125 | f |= f_export; |
| 126 | break; |
| 127 | default: |
| 128 | usage(stderr); |
| 129 | exit(EXIT_FAILURE); |
| 130 | break; |
| 131 | } |
| 132 | } |
| 133 | |
| 134 | /* --- Sort out the shell type --- * |
| 135 | * |
| 136 | * If the shell name contains the string `csh' then assume it's a C shell. |
| 137 | * Otherwise assume it's Bourne. This seems to work in practice. |
| 138 | */ |
| 139 | |
| 140 | if (!(f & f_shell)) { |
| 141 | const char *s = getenv("SHELL"); |
| 142 | if (!s) |
| 143 | f |= f_sh; |
| 144 | if (strstr(s, "csh")) |
| 145 | f |= f_csh; |
| 146 | else |
| 147 | f |= f_sh; |
| 148 | } |
| 149 | |
| 150 | if ((f & f_sh) && (f & f_csh)) { |
| 151 | fprintf(stderr, "xscsize: make your mind up about your shell type\n"); |
| 152 | exit(EXIT_FAILURE); |
| 153 | } |
| 154 | |
| 155 | /* --- Get the important information --- */ |
| 156 | |
| 157 | { |
| 158 | Display *dpy = XOpenDisplay(display); |
| 159 | int sc; |
| 160 | if (!dpy) { |
| 161 | fprintf(stderr, "xscsize: couldn't open display\n"); |
| 162 | exit(EXIT_FAILURE); |
| 163 | } |
| 164 | sc = DefaultScreen(dpy); |
| 165 | wd = DisplayWidth(dpy, sc); |
| 166 | ht = DisplayHeight(dpy, sc); |
| 167 | XCloseDisplay(dpy); |
| 168 | } |
| 169 | |
| 170 | /* --- Do the output thing --- */ |
| 171 | |
| 172 | if (f & f_sh) { |
| 173 | printf("XWIDTH=%lu XHEIGHT=%lu", wd, ht); |
| 174 | if (f & f_export) |
| 175 | printf("; export XWIDTH XHEIGHT"); |
| 176 | } |
| 177 | if (f & f_csh) { |
| 178 | if (f & f_export) |
| 179 | printf("setenv XWIDTH %lu; setenv XHEIGHT %lu", wd, ht); |
| 180 | else |
| 181 | printf("set XWIDTH=%lu XHEIGHT=%lu", wd, ht); |
| 182 | } |
| 183 | putchar('\n'); |
| 184 | |
| 185 | /* --- Done --- */ |
| 186 | |
| 187 | return (0); |
| 188 | } |
| 189 | |
| 190 | /*----- That's all, folks -------------------------------------------------*/ |