scripts/lxdialog/lxdialog.c

   1 /*
   2  *  dialog - Display simple dialog boxes from shell scripts
   3  *
   4  *  ORIGINAL AUTHOR: Savio Lam (lam836@cs.cuhk.hk)
   5  *  MODIFIED FOR LINUX KERNEL CONFIG BY: William Roadcap (roadcap@cfw.com)
   6  *
   7  *  This program is free software; you can redistribute it and/or
   8  *  modify it under the terms of the GNU General Public License
   9  *  as published by the Free Software Foundation; either version 2
  10  *  of the License, or (at your option) any later version.
  11  *
  12  *  This program is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with this program; if not, write to the Free Software
  19  *  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20  */
  21
  22 #include "dialog.h"
  23
  24 static void Usage (const char *name);
  25
  26 typedef int (jumperFn) (const char *title, int argc, const char * const * argv);
  27
  28 struct Mode {
  29     char *name;
  30     int argmin, argmax, argmod;
  31     jumperFn *jumper;
  32 };
  33
  34 jumperFn j_menu, j_checklist, j_radiolist, j_yesno, j_textbox, j_inputbox;
  35 jumperFn j_msgbox, j_infobox;
  36
  37 static struct Mode modes[] =
  38 {
  39     {"--menu", 9, 0, 3, j_menu},
  40     {"--checklist", 9, 0, 3, j_checklist},
  41     {"--radiolist", 9, 0, 3, j_radiolist},
  42     {"--yesno",    5,5,1, j_yesno},
  43     {"--textbox",  5,5,1, j_textbox},
  44     {"--inputbox", 5, 6, 1, j_inputbox},
  45     {"--msgbox", 5, 5, 1, j_msgbox},
  46     {"--infobox", 5, 5, 1, j_infobox},
  47     {NULL, 0, 0, 0, NULL}
  48 };
  49
  50 static struct Mode *modePtr;
  51
  52 #ifdef LOCALE
  53 #include <locale.h>
  54 #endif
  55
  56 int
  57 main (int argc, const char * const * argv)
  58 {
  59     int offset = 0, opt_clear = 0, end_common_opts = 0, retval;
  60     const char *title = NULL;
  61
  62 #ifdef LOCALE
  63     (void) setlocale (LC_ALL, "");
  64 #endif
  65
  66 #ifdef TRACE
  67     trace(TRACE_CALLS|TRACE_UPDATE);
  68 #endif
  69     if (argc < 2) {
  70         Usage (argv[0]);
  71         exit (-1);
  72     }
  73
  74     while (offset < argc - 1 && !end_common_opts) {     /* Common options */
  75         if (!strcmp (argv[offset + 1], "--title")) {
  76             if (argc - offset < 3 || title != NULL) {
  77                 Usage (argv[0]);
  78                 exit (-1);
  79             } else {
  80                 title = argv[offset + 2];
  81                 offset += 2;
  82             }
  83         } else if (!strcmp (argv[offset + 1], "--backtitle")) {
  84             if (backtitle != NULL) {
  85                 Usage (argv[0]);
  86                 exit (-1);
  87             } else {
  88                 backtitle = argv[offset + 2];
  89                 offset += 2;
  90             }
  91         } else if (!strcmp (argv[offset + 1], "--clear")) {
  92             if (opt_clear) {            /* Hey, "--clear" can't appear twice! */
  93                 Usage (argv[0]);
  94                 exit (-1);
  95             } else if (argc == 2) {     /* we only want to clear the screen */
  96                 init_dialog ();
  97                 refresh ();     /* init_dialog() will clear the screen for us */
  98                 end_dialog ();
  99                 return 0;
 100             } else {
 101                 opt_clear = 1;
 102                 offset++;
 103             }
 104         } else                  /* no more common options */
 105             end_common_opts = 1;
 106     }
 107
 108     if (argc - 1 == offset) {   /* no more options */
 109         Usage (argv[0]);
 110         exit (-1);
 111     }
 112     /* use a table to look for the requested mode, to avoid code duplication */
 113
 114     for (modePtr = modes; modePtr->name; modePtr++)     /* look for the mode */
 115         if (!strcmp (argv[offset + 1], modePtr->name))
 116             break;
 117
 118     if (!modePtr->name)
 119         Usage (argv[0]);
 120     if (argc - offset < modePtr->argmin)
 121         Usage (argv[0]);
 122     if (modePtr->argmax && argc - offset > modePtr->argmax)
 123         Usage (argv[0]);
 124
 125
 126
 127     init_dialog ();
 128     retval = (*(modePtr->jumper)) (title, argc - offset, argv + offset);
 129
 130     if (opt_clear) {            /* clear screen before exit */
 131         attr_clear (stdscr, LINES, COLS, screen_attr);
 132         refresh ();
 133     }
 134     end_dialog();
 135
 136     exit (retval);
 137 }
 138
 139 /*
 140  * Print program usage
 141  */
 142 static void
 143 Usage (const char *name)
 144 {
 145     fprintf (stderr, "\
 146 \ndialog, by Savio Lam (lam836@cs.cuhk.hk).\
 147 \n  patched by Stuart Herbert (S.Herbert@shef.ac.uk)\
 148 \n  modified/gutted for use as a Linux kernel config tool by \
 149 \n  William Roadcap (roadcapw@cfw.com)\
 150 \n\
 151 \n* Display dialog boxes from shell scripts *\
 152 \n\
 153 \nUsage: %s --clear\
 154 \n       %s [--title <title>] [--backtitle <backtitle>] --clear <Box options>\
 155 \n\
 156 \nBox options:\
 157 \n\
 158 \n  --menu      <text> <height> <width> <menu height> <tag1> <item1>...\
 159 \n  --checklist <text> <height> <width> <list height> <tag1> <item1> <status1>...\
 160 \n  --radiolist <text> <height> <width> <list height> <tag1> <item1> <status1>...\
 161 \n  --textbox   <file> <height> <width>\
 162 \n  --inputbox  <text> <height> <width> [<init>]\
 163 \n  --yesno     <text> <height> <width>\
 164 \n", name, name);
 165     exit (-1);
 166 }
 167
 168 /*
 169  * These are the program jumpers
 170  */
 171
 172 int
 173 j_menu (const char *t, int ac, const char * const * av)
 174 {
 175     return dialog_menu (t, av[2], atoi (av[3]), atoi (av[4]),
 176                         atoi (av[5]), av[6], (ac - 6) / 2, av + 7);
 177 }
 178
 179 int
 180 j_checklist (const char *t, int ac, const char * const * av)
 181 {
 182     return dialog_checklist (t, av[2], atoi (av[3]), atoi (av[4]),
 183         atoi (av[5]), (ac - 6) / 3, av + 6, FLAG_CHECK);
 184 }
 185
 186 int
 187 j_radiolist (const char *t, int ac, const char * const * av)
 188 {
 189     return dialog_checklist (t, av[2], atoi (av[3]), atoi (av[4]),
 190         atoi (av[5]), (ac - 6) / 3, av + 6, FLAG_RADIO);
 191 }
 192
 193 int
 194 j_textbox (const char *t, int ac, const char * const * av)
 195 {
 196     return dialog_textbox (t, av[2], atoi (av[3]), atoi (av[4]));
 197 }
 198
 199 int
 200 j_yesno (const char *t, int ac, const char * const * av)
 201 {
 202     return dialog_yesno (t, av[2], atoi (av[3]), atoi (av[4]));
 203 }
 204
 205 int
 206 j_inputbox (const char *t, int ac, const char * const * av)
 207 {
 208     int ret = dialog_inputbox (t, av[2], atoi (av[3]), atoi (av[4]),
 209                             ac == 6 ? av[5] : (char *) NULL);
 210     if (ret == 0)
 211         fprintf(stderr, dialog_input_result);
 212     return ret;
 213 }
 214
 215 int
 216 j_msgbox (const char *t, int ac, const char * const * av)
 217 {
 218     return dialog_msgbox (t, av[2], atoi (av[3]), atoi (av[4]), 1);
 219 }
 220
 221 int
 222 j_infobox (const char *t, int ac, const char * const * av)
 223 {
 224     return dialog_msgbox (t, av[2], atoi (av[3]), atoi (av[4]), 0);
 225 }
 226