lib/skin/common.c

   1 /*
   2    Skins engine.
   3    Interface functions
   4
   5    Copyright (C) 2009, 2010, 2011
   6    The Free Software Foundation, Inc.
   7
   8    Written by:
   9    Slava Zanko <slavazanko@gmail.com>, 2009
  10    Egmont Koblinger <egmont@gmail.com>, 2010
  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 <http://www.gnu.org/licenses/>.
  26  */
  27
  28 #include <config.h>
  29 #include <stdlib.h>
  30
  31 #include "internal.h"
  32
  33 #include "lib/tty/color.h"      /* tty_use_256colors(); */
  34
  35 /*** global variables ****************************************************************************/
  36
  37 mc_skin_t mc_skin__default;
  38
  39 /*** file scope macro definitions ****************************************************************/
  40
  41 /*** file scope type declarations ****************************************************************/
  42
  43 /*** file scope variables ************************************************************************/
  44
  45 static gboolean mc_skin_is_init = FALSE;
  46
  47 /* --------------------------------------------------------------------------------------------- */
  48 /*** file scope functions ************************************************************************/
  49 /* --------------------------------------------------------------------------------------------- */
  50
  51 static void
  52 mc_skin_hash_destroy_value (gpointer data)
  53 {
  54     mc_skin_color_t *mc_skin_color = (mc_skin_color_t *) data;
  55     g_free (mc_skin_color->fgcolor);
  56     g_free (mc_skin_color->bgcolor);
  57     g_free (mc_skin_color->attrs);
  58     g_free (mc_skin_color);
  59 }
  60
  61 /* --------------------------------------------------------------------------------------------- */
  62
  63 static char *
  64 mc_skin_get_default_name (void)
  65 {
  66     char *tmp_str;
  67
  68     /* from command line */
  69     if (mc_global.tty.skin != NULL)
  70         return g_strdup (mc_global.tty.skin);
  71
  72     /* from envirovement variable */
  73     tmp_str = getenv ("MC_SKIN");
  74     if (tmp_str != NULL)
  75         return g_strdup (tmp_str);
  76
  77     /*  from config. Or 'default' if no present in config */
  78     return mc_config_get_string (mc_main_config, CONFIG_APP_SECTION, "skin", "default");
  79 }
  80
  81 /* --------------------------------------------------------------------------------------------- */
  82
  83 static void
  84 mc_skin_reinit (void)
  85 {
  86     mc_skin_deinit ();
  87     mc_skin__default.name = mc_skin_get_default_name ();
  88     mc_skin__default.colors = g_hash_table_new_full (g_str_hash, g_str_equal,
  89                                                      g_free, mc_skin_hash_destroy_value);
  90 }
  91
  92 /* --------------------------------------------------------------------------------------------- */
  93
  94 static void
  95 mc_skin_try_to_load_default (void)
  96 {
  97     mc_skin_reinit ();
  98     g_free (mc_skin__default.name);
  99     mc_skin__default.name = g_strdup ("default");
 100     if (!mc_skin_ini_file_load (&mc_skin__default))
 101     {
 102         mc_skin_reinit ();
 103         mc_skin_set_hardcoded_skin (&mc_skin__default);
 104     }
 105
 106 }
 107
 108 /* --------------------------------------------------------------------------------------------- */
 109 /*** public functions ****************************************************************************/
 110 /* --------------------------------------------------------------------------------------------- */
 111
 112 gboolean
 113 mc_skin_init (GError ** error)
 114 {
 115     gboolean is_good_init = TRUE;
 116
 117     mc_skin__default.have_256_colors = FALSE;
 118
 119     mc_skin__default.name = mc_skin_get_default_name ();
 120
 121     mc_skin__default.colors = g_hash_table_new_full (g_str_hash, g_str_equal,
 122                                                      g_free, mc_skin_hash_destroy_value);
 123     if (!mc_skin_ini_file_load (&mc_skin__default))
 124     {
 125         *error = g_error_new (MC_ERROR, 0,
 126                               _("Unable to load '%s' skin.\nDefault skin has been loaded"),
 127                               mc_skin__default.name);
 128
 129         mc_skin_try_to_load_default ();
 130         is_good_init = FALSE;
 131     }
 132     mc_skin_colors_old_configure (&mc_skin__default);
 133
 134     if (!mc_skin_ini_file_parse (&mc_skin__default))
 135     {
 136         if (*error == NULL)
 137             *error = g_error_new (MC_ERROR, 0,
 138                                   _("Unable to parse '%s' skin.\nDefault skin has been loaded"),
 139                                   mc_skin__default.name);
 140
 141         mc_skin_try_to_load_default ();
 142         mc_skin_colors_old_configure (&mc_skin__default);
 143         (void) mc_skin_ini_file_parse (&mc_skin__default);
 144         is_good_init = FALSE;
 145     }
 146     if (is_good_init && !tty_use_256colors () && mc_skin__default.have_256_colors)
 147     {
 148         if (*error == NULL)
 149             *error = g_error_new (MC_ERROR, 0,
 150                                   _
 151                                   ("Unable to use '%s' skin with 256 colors support\non non-256 colors terminal.\nDefault skin has been loaded"),
 152                                   mc_skin__default.name);
 153
 154         mc_skin_try_to_load_default ();
 155         mc_skin_colors_old_configure (&mc_skin__default);
 156         (void) mc_skin_ini_file_parse (&mc_skin__default);
 157         is_good_init = FALSE;
 158     }
 159     mc_skin_is_init = TRUE;
 160     return is_good_init;
 161 }
 162
 163 /* --------------------------------------------------------------------------------------------- */
 164
 165 void
 166 mc_skin_deinit (void)
 167 {
 168     g_free (mc_skin__default.name);
 169     mc_skin__default.name = NULL;
 170     g_hash_table_destroy (mc_skin__default.colors);
 171     mc_skin__default.colors = NULL;
 172
 173     g_free (mc_skin__default.description);
 174     mc_skin__default.description = NULL;
 175
 176     mc_config_deinit (mc_skin__default.config);
 177     mc_skin__default.config = NULL;
 178
 179     mc_skin_is_init = FALSE;
 180 }
 181
 182 /* --------------------------------------------------------------------------------------------- */
 183
 184 gchar *
 185 mc_skin_get (const gchar * group, const gchar * key, const gchar * default_value)
 186 {
 187     if (mc_global.tty.ugly_line_drawing)
 188     {
 189         return g_strdup (default_value);
 190     }
 191     return mc_config_get_string (mc_skin__default.config, group, key, default_value);
 192 }
 193
 194 /* --------------------------------------------------------------------------------------------- */