root/src/selcodepage.c

/*   */

DEFINITIONS

1. get_hotkey
2. select_charset
3. do_set_codepage
4. do_select_codepage

   1 /*
   2    User interface for charset selection.
   3 
   4    Copyright (C) 2001 Walery Studennikov <despair@sama.ru>
   5 
   6    Copyright (C) 2011-2025
   7    Free Software Foundation, Inc.
   8 
   9    Written by:
  10    Walery Studennikov <despair@sama.ru>, 2001
  11 
  12    This file is part of the Midnight Commander.
  13 
  14    The Midnight Commander is free software: you can redistribute it
  15    and/or modify it under the terms of the GNU General Public License as
  16    published by the Free Software Foundation, either version 3 of the License,
  17    or (at your option) any later version.
  18 
  19    The Midnight Commander is distributed in the hope that it will be useful,
  20    but WITHOUT ANY WARRANTY; without even the implied warranty of
  21    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22    GNU General Public License for more details.
  23 
  24    You should have received a copy of the GNU General Public License
  25    along with this program.  If not, see <https://www.gnu.org/licenses/>.
  26  */
  27 
  28 /** \file selcodepage.c
  29  *  \brief Source: user %interface for charset %selection
  30  */
  31 
  32 #include <config.h>
  33 
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 
  37 #include "lib/global.h"
  38 #include "lib/widget.h"
  39 #include "lib/charsets.h"
  40 
  41 #include "setup.h"
  42 
  43 #include "selcodepage.h"
  44 
  45 /*** global variables ****************************************************************************/
  46 
  47 /*** file scope macro definitions ****************************************************************/
  48 
  49 #define ENTRY_LEN 30
  50 
  51 /*** file scope type declarations ****************************************************************/
  52 
  53 /*** forward declarations (file scope functions) *************************************************/
  54 
  55 /*** file scope variables ************************************************************************/
  56 
  57 /* --------------------------------------------------------------------------------------------- */
  58 /*** file scope functions ************************************************************************/
  59 /* --------------------------------------------------------------------------------------------- */
  60 
  61 static unsigned char
  62 get_hotkey (int n)
     /*   */
  63 {
  64     return (n <= 9) ? '0' + n : 'a' + n - 10;
  65 }
  66 
  67 /* --------------------------------------------------------------------------------------------- */
  68 /*** public functions ****************************************************************************/
  69 /* --------------------------------------------------------------------------------------------- */
  70 
  71 /* Return value:
  72  *   -2 (SELECT_CHARSET_CANCEL)       : Cancel
  73  *   -1 (SELECT_CHARSET_NO_TRANSLATE) : "No translation"
  74  *   >= 0                             : charset number
  75  */
  76 int
  77 select_charset (const int center_y, const int center_x, const int current_charset)
     /*   */
  78 {
  79     Listbox *listbox;
  80 
  81     listbox = listbox_window_centered_new (center_y, center_x, codepages->len + 1, ENTRY_LEN + 2,
  82                                            _ ("Choose codepage"), "[Codepages Translation]");
  83 
  84     LISTBOX_APPEND_TEXT (listbox, '-', _ ("-  < No translation >"), NULL, FALSE);
  85 
  86     for (guint i = 0; i < codepages->len; i++)
  87     {
  88         char buffer[BUF_SMALL];
  89         const char *name = get_codepage_name (i);
  90 
  91         g_snprintf (buffer, sizeof (buffer), "%c  %s", get_hotkey (i), name);
  92         LISTBOX_APPEND_TEXT (listbox, get_hotkey (i), buffer, NULL, FALSE);
  93     }
  94 
  95     listbox_set_current (listbox->list, current_charset + 1);
  96 
  97     const int listbox_result = listbox_run (listbox);
  98 
  99     return listbox_result < 0 ? SELECT_CHARSET_CANCEL : listbox_result - 1;
 100 }
 101 
 102 /* --------------------------------------------------------------------------------------------- */
 103 
 104 /** Set codepage */
 105 gboolean
 106 do_set_codepage (const int codepage)
     /*   */
 107 {
 108     char *errmsg;
 109     gboolean ret;
 110 
 111     mc_global.source_codepage = codepage;
 112     errmsg =
 113         init_translation_table (codepage == SELECT_CHARSET_NO_TRANSLATE ? mc_global.display_codepage
 114                                                                         : mc_global.source_codepage,
 115                                 mc_global.display_codepage);
 116     ret = errmsg == NULL;
 117 
 118     if (!ret)
 119     {
 120         message (D_ERROR, MSG_ERROR, "%s", errmsg);
 121         g_free (errmsg);
 122     }
 123 
 124     return ret;
 125 }
 126 
 127 /* --------------------------------------------------------------------------------------------- */
 128 
 129 /** Show menu selecting codepage */
 130 gboolean
 131 do_select_codepage (void)
     /*   */
 132 {
 133     const int r = select_charset (-1, -1, default_source_codepage);
 134 
 135     if (r == SELECT_CHARSET_CANCEL)
 136         return FALSE;
 137 
 138     default_source_codepage = r;
 139     return do_set_codepage (default_source_codepage);
 140 }
 141 
 142 /* --------------------------------------------------------------------------------------------- */

/*   */