src/selcodepage.c

   1 /* User interface for charset selection.
   2
   3    Copyright (C) 2001 Walery Studennikov <despair@sama.ru>
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software
  17    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <config.h>
  21
  22 #ifdef HAVE_CHARSET
  23 #include <stdlib.h>
  24 #include <stdio.h>
  25
  26 #include "global.h"
  27 #include "dlg.h"
  28 #include "dialog.h"
  29 #include "widget.h"
  30 #include "wtools.h"
  31 #include "charsets.h"
  32 #include "selcodepage.h"
  33 #include "main.h"
  34
  35 #define ENTRY_LEN 35
  36
  37 /* Numbers of (file I/O) and (input/display) codepages. -1 if not selected */
  38 int source_codepage = -1;
  39 int display_codepage = -1;
  40
  41 static unsigned char get_hotkey( int n )
  42 {
  43     return (n <= 9) ? '0' + n : 'a' + n - 10;
  44 }
  45
  46 int select_charset( int current_charset, int seldisplay )
  47 {
  48     int i, menu_lines = n_codepages + 1;
  49     char buffer[255];
  50
  51     /* Create listbox */
  52     Listbox* listbox =
  53         create_listbox_window ( ENTRY_LEN + 2, menu_lines,
  54                                 _(" Choose input codepage "),
  55                                 "[Codepages Translation]");
  56
  57     if (!seldisplay)
  58         LISTBOX_APPEND_TEXT( listbox, '-', _("-  < No translation >"), NULL );
  59
  60     /* insert all the items found */
  61     for (i = 0; i < n_codepages; i++) {
  62         char *name = codepages[i].name;
  63         snprintf (buffer, sizeof (buffer), "%c  %s", get_hotkey(i), name);
  64         LISTBOX_APPEND_TEXT( listbox, get_hotkey(i), buffer, NULL );
  65     }
  66     if (seldisplay) {
  67         snprintf (buffer, sizeof (buffer), "%c  %s", get_hotkey(n_codepages), _("Other 8 bit"));
  68         LISTBOX_APPEND_TEXT( listbox, get_hotkey(n_codepages), buffer, NULL );
  69     }
  70
  71     /* Select the default entry */
  72     i = (seldisplay)
  73         ?
  74         ( (current_charset < 0) ? n_codepages : current_charset )
  75         :
  76         ( current_charset + 1 );
  77
  78     listbox_select_by_number( listbox->list, i );
  79
  80     i = run_listbox( listbox );
  81
  82     return (seldisplay) ? ( (i >= n_codepages) ? -1 : i )
  83                         : ( i - 1 );
  84 }
  85
  86 /* Helper functions for codepages support */
  87
  88
  89 int do_select_codepage(void)
  90 {
  91     char *errmsg;
  92
  93     if (display_codepage > 0) {
  94         source_codepage = select_charset( source_codepage, 0 );
  95         errmsg = init_translation_table( source_codepage, display_codepage );
  96         if (errmsg) {
  97             message( 1, MSG_ERROR, "%s", errmsg );
  98             return -1;
  99         }
 100     } else {
 101         message( 1, _(" Warning "),
 102                _("To use this feature select your codepage in\n"
 103                  "Setup / Display Bits dialog!\n"
 104                  "Do not forget to save options." ));
 105         return -1;
 106     }
 107     return 0;
 108 }
 109
 110 #endif /* HAVE_CHARSET */