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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #include <config.h>
  21
  22 #ifdef HAVE_CHARSET
  23
  24 #include <stdio.h>
  25 #include <stdlib.h>
  26
  27 #include "global.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
  42 get_hotkey (int n)
  43 {
  44     return (n <= 9) ? '0' + n : 'a' + n - 10;
  45 }
  46
  47 int
  48 select_charset (int delta_x, int delta_y, int current_charset, int seldisplay)
  49 {
  50     int i, menu_lines = n_codepages + 1;
  51     char buffer[255];
  52
  53     /* Create listbox */
  54     Listbox *listbox = create_listbox_window_delta (delta_x, delta_y,
  55                                               ENTRY_LEN + 2, menu_lines,
  56                                               _(" Choose input codepage "),
  57                                               "[Codepages Translation]");
  58
  59     if (!seldisplay)
  60         LISTBOX_APPEND_TEXT (listbox, '-', _("-  < No translation >"),
  61                              NULL);
  62
  63     /* insert all the items found */
  64     for (i = 0; i < n_codepages; i++) {
  65         char *name = codepages[i].name;
  66         g_snprintf (buffer, sizeof (buffer), "%c  %s", get_hotkey (i),
  67                     name);
  68         LISTBOX_APPEND_TEXT (listbox, get_hotkey (i), buffer, NULL);
  69     }
  70     if (seldisplay) {
  71         g_snprintf (buffer, sizeof (buffer), "%c  %s",
  72                     get_hotkey (n_codepages), _("Other 8 bit"));
  73         LISTBOX_APPEND_TEXT (listbox, get_hotkey (n_codepages), buffer,
  74                              NULL);
  75     }
  76
  77     /* Select the default entry */
  78     i = (seldisplay)
  79         ? ((current_charset < 0) ? n_codepages : current_charset)
  80         : (current_charset + 1);
  81
  82     listbox_select_by_number (listbox->list, i);
  83
  84     i = run_listbox (listbox);
  85
  86     return (seldisplay) ? ((i >= n_codepages) ? -1 : i)
  87         : (i - 1);
  88 }
  89
  90 /* Helper functions for codepages support */
  91
  92
  93 int
  94 do_select_codepage (void)
  95 {
  96     const char *errmsg;
  97     int r;
  98
  99     r = select_charset (0, 0, source_codepage, 0);
 100     if ( r > 0 )
 101         source_codepage = r;
 102
 103     errmsg = init_translation_table (source_codepage, display_codepage);
 104     if (errmsg) {
 105         message (D_ERROR, MSG_ERROR, "%s", errmsg);
 106         return -1;
 107     }
 108     return 0;
 109 }
 110
 111 #endif                          /* HAVE_CHARSET */