scripts/config/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_radiolist, j_yesno, j_textbox, j_inputbox;
  35 jumperFn j_msgbox, j_infobox;
  36
  37 static struct Mode modes[] = {
  38         {"--menu", 9, 0, 3, j_menu},
  39         {"--radiolist", 9, 0, 3, j_radiolist},
  40         {"--yesno", 5, 5, 1, j_yesno},
  41         {"--textbox", 5, 5, 1, j_textbox},
  42         {"--inputbox", 5, 6, 1, j_inputbox},
  43         {"--msgbox", 5, 5, 1, j_msgbox},
  44         {"--infobox", 5, 5, 1, j_infobox},
  45         {NULL, 0, 0, 0, NULL}
  46 };
  47
  48 static struct Mode *modePtr;
  49
  50 #ifdef LOCALE
  51 #include <locale.h>
  52 #endif
  53
  54 int main(int argc, const char *const *argv)
  55 {
  56         int offset = 0, opt_clear = 0, end_common_opts = 0, retval;
  57         const char *title = NULL;
  58
  59 #ifdef LOCALE
  60         (void)setlocale(LC_ALL, "");
  61 #endif
  62
  63 #ifdef TRACE
  64         trace(TRACE_CALLS | TRACE_UPDATE);
  65 #endif
  66         if (argc < 2) {
  67                 Usage(argv[0]);
  68                 exit(-1);
  69         }
  70
  71         while (offset < argc - 1 && !end_common_opts) { /* Common options */
  72                 if (!strcmp(argv[offset + 1], "--title")) {
  73                         if (argc - offset < 3 || title != NULL) {
  74                                 Usage(argv[0]);
  75                                 exit(-1);
  76                         } else {
  77                                 title = argv[offset + 2];
  78                                 offset += 2;
  79                         }
  80                 } else if (!strcmp(argv[offset + 1], "--backtitle")) {
  81                         if (backtitle != NULL) {
  82                                 Usage(argv[0]);
  83                                 exit(-1);
  84                         } else {
  85                                 backtitle = argv[offset + 2];
  86                                 offset += 2;
  87                         }
  88                 } else if (!strcmp(argv[offset + 1], "--clear")) {
  89                         if (opt_clear) {        /* Hey, "--clear" can't appear twice! */
  90                                 Usage(argv[0]);
  91                                 exit(-1);
  92                         } else if (argc == 2) { /* we only want to clear the screen */
  93                                 init_dialog();
  94                                 refresh();      /* init_dialog() will clear the screen for us */
  95                                 end_dialog();
  96                                 return 0;
  97                         } else {
  98                                 opt_clear = 1;
  99                                 offset++;
 100                         }
 101                 } else          /* no more common options */
 102                         end_common_opts = 1;
 103         }
 104
 105         if (argc - 1 == offset) {       /* no more options */
 106                 Usage(argv[0]);
 107                 exit(-1);
 108         }
 109         /* use a table to look for the requested mode, to avoid code duplication */
 110
 111         for (modePtr = modes; modePtr->name; modePtr++) /* look for the mode */
 112                 if (!strcmp(argv[offset + 1], modePtr->name))
 113                         break;
 114
 115         if (!modePtr->name)
 116                 Usage(argv[0]);
 117         if (argc - offset < modePtr->argmin)
 118                 Usage(argv[0]);
 119         if (modePtr->argmax && argc - offset > modePtr->argmax)
 120                 Usage(argv[0]);
 121
 122         init_dialog();
 123         retval = (*(modePtr->jumper)) (title, argc - offset, argv + offset);
 124
 125         if (opt_clear) {        /* clear screen before exit */
 126                 attr_clear(stdscr, LINES, COLS, screen_attr);
 127                 refresh();
 128         }
 129         end_dialog();
 130
 131         exit(retval);
 132 }
 133
 134 /*
 135  * Print program usage
 136  */
 137 static void Usage(const char *name)
 138 {
 139         fprintf(stderr, "\
 140 \ndialog, by Savio Lam (lam836@cs.cuhk.hk).\
 141 \n  patched by Stuart Herbert (S.Herbert@shef.ac.uk)\
 142 \n  modified/gutted for use as a Linux kernel config tool by \
 143 \n  William Roadcap (roadcapw@cfw.com)\
 144 \n\
 145 \n* Display dialog boxes from shell scripts *\
 146 \n\
 147 \nUsage: %s --clear\
 148 \n       %s [--title <title>] [--backtitle <backtitle>] --clear <Box options>\
 149 \n\
 150 \nBox options:\
 151 \n\
 152 \n  --menu      <text> <height> <width> <menu height> <tag1> <item1>...\
 153 \n  --radiolist <text> <height> <width> <list height> <tag1> <item1> <status1>...\
 154 \n  --textbox   <file> <height> <width>\
 155 \n  --inputbox  <text> <height> <width> [<init>]\
 156 \n  --yesno     <text> <height> <width>\
 157 \n", name, name);
 158         exit(-1);
 159 }
 160
 161 /*
 162  * These are the program jumpers
 163  */
 164
 165 int j_menu(const char *t, int ac, const char *const *av)
 166 {
 167         return dialog_menu(t, av[2], atoi(av[3]), atoi(av[4]),
 168                            atoi(av[5]), av[6], (ac - 6) / 2, av + 7);
 169 }
 170
 171 int j_radiolist(const char *t, int ac, const char *const *av)
 172 {
 173         return dialog_checklist(t, av[2], atoi(av[3]), atoi(av[4]),
 174                                 atoi(av[5]), (ac - 6) / 3, av + 6);
 175 }
 176
 177 int j_textbox(const char *t, int ac, const char *const *av)
 178 {
 179         return dialog_textbox(t, av[2], atoi(av[3]), atoi(av[4]));
 180 }
 181
 182 int j_yesno(const char *t, int ac, const char *const *av)
 183 {
 184         return dialog_yesno(t, av[2], atoi(av[3]), atoi(av[4]));
 185 }
 186
 187 int j_inputbox(const char *t, int ac, const char *const *av)
 188 {
 189         int ret = dialog_inputbox(t, av[2], atoi(av[3]), atoi(av[4]),
 190                                   ac == 6 ? av[5] : (char *)NULL);
 191         if (ret == 0)
 192                 fprintf(stderr, dialog_input_result);
 193         return ret;
 194 }
 195
 196 int j_msgbox(const char *t, int ac, const char *const *av)
 197 {
 198         return dialog_msgbox(t, av[2], atoi(av[3]), atoi(av[4]), 1);
 199 }
 200
 201 int j_infobox(const char *t, int ac, const char *const *av)
 202 {
 203         return dialog_msgbox(t, av[2], atoi(av[3]), atoi(av[4]), 0);
 204 }