util/wdread.c

   1 /* wdread.c - read value from defaults database
   2  *
   3  *  WindowMaker window manager
   4  *
   5  *  Copyright (c) 1997-2003 Alfredo K. Kojima
   6  *  (cowardly remade from wdwrite.c; by judas@hell on Jan 26 2001)
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 2 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License along
  19  *  with this program; if not, write to the Free Software Foundation, Inc.,
  20  *  51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22
  23 #ifdef __GLIBC__
  24 #define _GNU_SOURCE             /* getopt_long */
  25 #endif
  26
  27 /*
  28  * WindowMaker defaults DB reader
  29  */
  30 #include "config.h"
  31
  32 #include <getopt.h>
  33 #include <limits.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <unistd.h>
  38
  39 #ifdef HAVE_STDNORETURN
  40 #include <stdnoreturn.h>
  41 #endif
  42
  43 #include <WINGs/WUtil.h>
  44
  45 #include "../src/wconfig.h"
  46
  47 static const char *prog_name;
  48
  49 static noreturn void print_help(int print_usage, int exitval)
  50 {
  51         printf("Usage: %s [OPTIONS] <domain> <key>\n", prog_name);
  52         if (print_usage) {
  53                 puts("Read <key> from <domain>'s database");
  54                 puts("");
  55                 puts("  -h, --help              display this help message");
  56                 puts("  -v, --version           output version information and exit");
  57         }
  58         exit(exitval);
  59 }
  60
  61 int main(int argc, char **argv)
  62 {
  63         char path[PATH_MAX];
  64         WMPropList *key, *value, *dict;
  65         int ch;
  66
  67         struct option longopts[] = {
  68                 { "version",    no_argument,            NULL,                   'v' },
  69                 { "help",       no_argument,            NULL,                   'h' },
  70                 { NULL,         0,                      NULL,                   0 }
  71         };
  72
  73         prog_name = argv[0];
  74         while ((ch = getopt_long(argc, argv, "hv", longopts, NULL)) != -1)
  75                 switch(ch) {
  76                         case 'v':
  77                                 printf("%s (Window Maker %s)\n", prog_name, VERSION);
  78                                 return 0;
  79                                 /* NOTREACHED */
  80                         case 'h':
  81                                 print_help(1, 0);
  82                                 /* NOTREACHED */
  83                         case 0:
  84                                 break;
  85                         default:
  86                                 print_help(0, 1);
  87                                 /* NOTREACHED */
  88                 }
  89
  90         argc -= optind;
  91         argv += optind;
  92
  93         if (argc != 2)
  94                 print_help(0, 1);
  95
  96         key = WMCreatePLString(argv[1]);
  97
  98         snprintf(path, sizeof(path), "%s", wdefaultspathfordomain(argv[0]));
  99
 100         dict = WMReadPropListFromFile(path);
 101         if (dict == NULL)
 102                 return 1;       /* bad domain */
 103
 104         value = WMGetFromPLDictionary(dict, key);
 105         if (value == NULL)
 106                 return 2;       /* bad key */
 107
 108         printf("%s\n", WMGetPropListDescription(value, True));
 109         return 0;
 110 }