lib/skin/common.c

   1 /*
   2    Skins engine.
   3    Interface functions
   4
   5    Copyright (C) 2009-2016
   6    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 #include "lib/util.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.tty.skin != NULL)
  71         return g_strdup (mc_global.tty.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 (const gchar * skin_override, GError ** mcerror)
 115 {
 116     gboolean is_good_init = TRUE;
 117
 118     mc_return_val_if_error (mcerror, FALSE);
 119
 120     mc_skin__default.have_256_colors = FALSE;
 121
 122     mc_skin__default.name =
 123         skin_override != NULL ? g_strdup (skin_override) : mc_skin_get_default_name ();
 124
 125     mc_skin__default.colors = g_hash_table_new_full (g_str_hash, g_str_equal,
 126                                                      g_free, mc_skin_hash_destroy_value);
 127     if (!mc_skin_ini_file_load (&mc_skin__default))
 128     {
 129         mc_propagate_error (mcerror, 0,
 130                             _("Unable to load '%s' skin.\nDefault skin has been loaded"),
 131                             mc_skin__default.name);
 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         mc_propagate_error (mcerror, 0,
 140                             _("Unable to parse '%s' skin.\nDefault skin has been loaded"),
 141                             mc_skin__default.name);
 142
 143         mc_skin_try_to_load_default ();
 144         mc_skin_colors_old_configure (&mc_skin__default);
 145         (void) mc_skin_ini_file_parse (&mc_skin__default);
 146         is_good_init = FALSE;
 147     }
 148     if (is_good_init && !tty_use_256colors () && mc_skin__default.have_256_colors)
 149     {
 150         mc_propagate_error (mcerror, 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         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     tty_color_free_all_tmp ();
 169     tty_color_free_all_non_tmp ();
 170
 171     MC_PTR_FREE (mc_skin__default.name);
 172     g_hash_table_destroy (mc_skin__default.colors);
 173     mc_skin__default.colors = NULL;
 174
 175     MC_PTR_FREE (mc_skin__default.description);
 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 /* --------------------------------------------------------------------------------------------- */