lib/skin/common.c

   1 /*
   2    Skins engine.
   3    Interface functions
   4
   5    Copyright (C) 2009, 2010 The Free Software Foundation, Inc.
   6
   7    Written by:
   8    Slava Zanko <slavazanko@gmail.com>, 2009
   9    Egmont Koblinger <egmont@gmail.com>, 2010
  10
  11    This file is part of the Midnight Commander.
  12
  13    The Midnight Commander is free software; you can redistribute it
  14    and/or modify it under the terms of the GNU General Public License as
  15    published by the Free Software Foundation; either version 2 of the
  16    License, or (at your option) any later version.
  17
  18    The Midnight Commander is distributed in the hope that it will be
  19    useful, but WITHOUT ANY WARRANTY; without even the implied warranty
  20    of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  21    General Public License for more details.
  22
  23    You should have received a copy of the GNU General Public License
  24    along with this program; if not, write to the Free Software
  25    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  26    MA 02110-1301, USA.
  27  */
  28
  29 #include <config.h>
  30 #include <stdlib.h>
  31
  32 #include "internal.h"
  33
  34 #include "lib/tty/color.h"      /* tty_use_256colors(); */
  35
  36 /*** global variables ****************************************************************************/
  37
  38 mc_skin_t mc_skin__default;
  39
  40 /*** file scope macro definitions ****************************************************************/
  41
  42 /*** file scope type declarations ****************************************************************/
  43
  44 /*** file scope variables ************************************************************************/
  45
  46 static gboolean mc_skin_is_init = FALSE;
  47
  48 /* --------------------------------------------------------------------------------------------- */
  49 /*** file scope functions ************************************************************************/
  50 /* --------------------------------------------------------------------------------------------- */
  51
  52 static void
  53 mc_skin_hash_destroy_value (gpointer data)
  54 {
  55     mc_skin_color_t *mc_skin_color = (mc_skin_color_t *) data;
  56     g_free (mc_skin_color->fgcolor);
  57     g_free (mc_skin_color->bgcolor);
  58     g_free (mc_skin_color->attrs);
  59     g_free (mc_skin_color);
  60 }
  61
  62 /* --------------------------------------------------------------------------------------------- */
  63
  64 static char *
  65 mc_skin_get_default_name (void)
  66 {
  67     char *tmp_str;
  68
  69     /* from command line */
  70     if (mc_global.skin != NULL)
  71         return g_strdup (mc_global.skin);
  72
  73     /* from envirovement variable */
  74     tmp_str = getenv ("MC_SKIN");
  75     if (tmp_str != NULL)
  76         return g_strdup (tmp_str);
  77
  78     /*  from config. Or 'default' if no present in config */
  79     return mc_config_get_string (mc_main_config, CONFIG_APP_SECTION, "skin", "default");
  80 }
  81
  82 /* --------------------------------------------------------------------------------------------- */
  83
  84 static void
  85 mc_skin_reinit (void)
  86 {
  87     mc_skin_deinit ();
  88     mc_skin__default.name = mc_skin_get_default_name ();
  89     mc_skin__default.colors = g_hash_table_new_full (g_str_hash, g_str_equal,
  90                                                      g_free, mc_skin_hash_destroy_value);
  91 }
  92
  93 /* --------------------------------------------------------------------------------------------- */
  94
  95 static void
  96 mc_skin_try_to_load_default (void)
  97 {
  98     mc_skin_reinit ();
  99     g_free (mc_skin__default.name);
 100     mc_skin__default.name = g_strdup ("default");
 101     if (!mc_skin_ini_file_load (&mc_skin__default))
 102     {
 103         mc_skin_reinit ();
 104         mc_skin_set_hardcoded_skin (&mc_skin__default);
 105     }
 106
 107 }
 108
 109 /* --------------------------------------------------------------------------------------------- */
 110 /*** public functions ****************************************************************************/
 111 /* --------------------------------------------------------------------------------------------- */
 112
 113 gboolean
 114 mc_skin_init (GError ** error)
 115 {
 116     gboolean is_good_init = TRUE;
 117
 118     mc_skin__default.have_256_colors = FALSE;
 119
 120     mc_skin__default.name = mc_skin_get_default_name ();
 121
 122     mc_skin__default.colors = g_hash_table_new_full (g_str_hash, g_str_equal,
 123                                                      g_free, mc_skin_hash_destroy_value);
 124     if (!mc_skin_ini_file_load (&mc_skin__default))
 125     {
 126         *error = g_error_new (MC_ERROR, 0,
 127                               _("Unable to load '%s' skin.\nDefault skin has been loaded"),
 128                               mc_skin__default.name);
 129
 130         mc_skin_try_to_load_default ();
 131         is_good_init = FALSE;
 132     }
 133     mc_skin_colors_old_configure (&mc_skin__default);
 134
 135     if (!mc_skin_ini_file_parse (&mc_skin__default))
 136     {
 137         if (*error == NULL)
 138             *error = g_error_new (MC_ERROR, 0,
 139                                   _("Unable to parse '%s' skin.\nDefault skin has been loaded"),
 140                                   mc_skin__default.name);
 141
 142         mc_skin_try_to_load_default ();
 143         mc_skin_colors_old_configure (&mc_skin__default);
 144         (void) mc_skin_ini_file_parse (&mc_skin__default);
 145         is_good_init = FALSE;
 146     }
 147     if (is_good_init && !tty_use_256colors () && mc_skin__default.have_256_colors)
 148     {
 149         if (*error == NULL)
 150             *error = g_error_new (MC_ERROR, 0,
 151                                   _
 152                                   ("Unable to use '%s' skin with 256 colors support\non non-256 colors terminal.\nDefault skin has been loaded"),
 153                                   mc_skin__default.name);
 154
 155         mc_skin_try_to_load_default ();
 156         mc_skin_colors_old_configure (&mc_skin__default);
 157         (void) mc_skin_ini_file_parse (&mc_skin__default);
 158         is_good_init = FALSE;
 159     }
 160     mc_skin_is_init = TRUE;
 161     return is_good_init;
 162 }
 163
 164 /* --------------------------------------------------------------------------------------------- */
 165
 166 void
 167 mc_skin_deinit (void)
 168 {
 169     g_free (mc_skin__default.name);
 170     mc_skin__default.name = NULL;
 171     g_hash_table_destroy (mc_skin__default.colors);
 172     mc_skin__default.colors = NULL;
 173
 174     g_free (mc_skin__default.description);
 175     mc_skin__default.description = NULL;
 176
 177     mc_config_deinit (mc_skin__default.config);
 178     mc_skin__default.config = NULL;
 179
 180     mc_skin_is_init = FALSE;
 181 }
 182
 183 /* --------------------------------------------------------------------------------------------- */
 184
 185 gchar *
 186 mc_skin_get (const gchar * group, const gchar * key, const gchar * default_value)
 187 {
 188     if (mc_global.tty.ugly_line_drawing)
 189     {
 190         return g_strdup (default_value);
 191     }
 192     return mc_config_get_string (mc_skin__default.config, group, key, default_value);
 193 }
 194
 195 /* --------------------------------------------------------------------------------------------- */