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 #include "src/args.h"
  37
  38 /*** global variables ****************************************************************************/
  39
  40 mc_skin_t mc_skin__default;
  41
  42 /*** file scope macro definitions ****************************************************************/
  43
  44 /*** file scope type declarations ****************************************************************/
  45
  46 /*** file scope variables ************************************************************************/
  47
  48 static gboolean mc_skin_is_init = FALSE;
  49
  50 /* --------------------------------------------------------------------------------------------- */
  51 /*** file scope functions ************************************************************************/
  52 /* --------------------------------------------------------------------------------------------- */
  53
  54 static void
  55 mc_skin_hash_destroy_value (gpointer data)
  56 {
  57     mc_skin_color_t *mc_skin_color = (mc_skin_color_t *) data;
  58     g_free (mc_skin_color->fgcolor);
  59     g_free (mc_skin_color->bgcolor);
  60     g_free (mc_skin_color->attrs);
  61     g_free (mc_skin_color);
  62 }
  63
  64 /* --------------------------------------------------------------------------------------------- */
  65
  66 static char *
  67 mc_skin_get_default_name (void)
  68 {
  69     char *tmp_str;
  70
  71     /* from command line */
  72     if (mc_args__skin != NULL)
  73         return g_strdup (mc_args__skin);
  74
  75     /* from envirovement variable */
  76     tmp_str = getenv ("MC_SKIN");
  77     if (tmp_str != NULL)
  78         return g_strdup (tmp_str);
  79
  80     /*  from config. Or 'default' if no present in config */
  81     return mc_config_get_string (mc_main_config, CONFIG_APP_SECTION, "skin", "default");
  82 }
  83
  84 /* --------------------------------------------------------------------------------------------- */
  85
  86 static void
  87 mc_skin_reinit (void)
  88 {
  89     mc_skin_deinit ();
  90     mc_skin__default.name = mc_skin_get_default_name ();
  91     mc_skin__default.colors = g_hash_table_new_full (g_str_hash, g_str_equal,
  92                                                      g_free, mc_skin_hash_destroy_value);
  93 }
  94
  95 /* --------------------------------------------------------------------------------------------- */
  96
  97 static void
  98 mc_skin_try_to_load_default (void)
  99 {
 100     mc_skin_reinit ();
 101     g_free (mc_skin__default.name);
 102     mc_skin__default.name = g_strdup ("default");
 103     if (!mc_skin_ini_file_load (&mc_skin__default))
 104     {
 105         mc_skin_reinit ();
 106         mc_skin_set_hardcoded_skin (&mc_skin__default);
 107     }
 108
 109 }
 110
 111 /* --------------------------------------------------------------------------------------------- */
 112 /*** public functions ****************************************************************************/
 113 /* --------------------------------------------------------------------------------------------- */
 114
 115 gboolean
 116 mc_skin_init (GError ** error)
 117 {
 118     gboolean is_good_init = TRUE;
 119
 120     mc_skin__default.have_256_colors = FALSE;
 121
 122     mc_skin__default.name = mc_skin_get_default_name ();
 123
 124     mc_skin__default.colors = g_hash_table_new_full (g_str_hash, g_str_equal,
 125                                                      g_free, mc_skin_hash_destroy_value);
 126     if (!mc_skin_ini_file_load (&mc_skin__default))
 127     {
 128         *error = g_error_new (MC_ERROR, 0,
 129                               _("Unable to load '%s' skin.\nDefault skin has been loaded"),
 130                               mc_skin__default.name);
 131
 132         mc_skin_try_to_load_default ();
 133         is_good_init = FALSE;
 134     }
 135     mc_skin_colors_old_configure (&mc_skin__default);
 136
 137     if (!mc_skin_ini_file_parse (&mc_skin__default))
 138     {
 139         if (*error == NULL)
 140             *error = g_error_new (MC_ERROR, 0,
 141                                   _("Unable to parse '%s' skin.\nDefault skin has been loaded"),
 142                                   mc_skin__default.name);
 143
 144         mc_skin_try_to_load_default ();
 145         mc_skin_colors_old_configure (&mc_skin__default);
 146         (void) mc_skin_ini_file_parse (&mc_skin__default);
 147         is_good_init = FALSE;
 148     }
 149     if ( is_good_init &&  !tty_use_256colors () && mc_skin__default.have_256_colors )
 150     {
 151         if (*error == NULL)
 152             *error = g_error_new (MC_ERROR, 0,
 153                                   _
 154                                   ("Unable to use '%s' skin with 256 colors support\non non-256 colors terminal.\nDefault skin has been loaded"),
 155                                   mc_skin__default.name);
 156
 157         mc_skin_try_to_load_default ();
 158         mc_skin_colors_old_configure (&mc_skin__default);
 159         (void) mc_skin_ini_file_parse (&mc_skin__default);
 160         is_good_init = FALSE;
 161     }
 162     mc_skin_is_init = TRUE;
 163     return is_good_init;
 164 }
 165
 166 /* --------------------------------------------------------------------------------------------- */
 167
 168 void
 169 mc_skin_deinit (void)
 170 {
 171     g_free (mc_skin__default.name);
 172     mc_skin__default.name = NULL;
 173     g_hash_table_destroy (mc_skin__default.colors);
 174     mc_skin__default.colors = NULL;
 175
 176     g_free (mc_skin__default.description);
 177     mc_skin__default.description = NULL;
 178
 179     mc_config_deinit (mc_skin__default.config);
 180     mc_skin__default.config = NULL;
 181
 182     mc_skin_is_init = FALSE;
 183 }
 184
 185 /* --------------------------------------------------------------------------------------------- */
 186
 187 gchar *
 188 mc_skin_get (const gchar * group, const gchar * key, const gchar * default_value)
 189 {
 190     if (mc_args__ugly_line_drawing)
 191     {
 192         return g_strdup (default_value);
 193     }
 194     return mc_config_get_string (mc_skin__default.config, group, key, default_value);
 195 }
 196
 197 /* --------------------------------------------------------------------------------------------- */