lib/skin/common.c

   1 /*
   2    Skins engine.
   3    Interface functions
   4
   5    Copyright (C) 2009-2017
   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_global.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     GError *error = NULL;
 118
 119     mc_return_val_if_error (mcerror, FALSE);
 120
 121     mc_skin__default.have_256_colors = FALSE;
 122     mc_skin__default.have_true_colors = FALSE;
 123
 124     mc_skin__default.name =
 125         skin_override != NULL ? g_strdup (skin_override) : mc_skin_get_default_name ();
 126
 127     mc_skin__default.colors = g_hash_table_new_full (g_str_hash, g_str_equal,
 128                                                      g_free, mc_skin_hash_destroy_value);
 129     if (!mc_skin_ini_file_load (&mc_skin__default))
 130     {
 131         mc_propagate_error (mcerror, 0,
 132                             _("Unable to load '%s' skin.\nDefault skin has been loaded"),
 133                             mc_skin__default.name);
 134         mc_skin_try_to_load_default ();
 135         is_good_init = FALSE;
 136     }
 137     mc_skin_colors_old_configure (&mc_skin__default);
 138
 139     if (!mc_skin_ini_file_parse (&mc_skin__default))
 140     {
 141         mc_propagate_error (mcerror, 0,
 142                             _("Unable to parse '%s' skin.\nDefault skin has been loaded"),
 143                             mc_skin__default.name);
 144
 145         mc_skin_try_to_load_default ();
 146         mc_skin_colors_old_configure (&mc_skin__default);
 147         (void) mc_skin_ini_file_parse (&mc_skin__default);
 148         is_good_init = FALSE;
 149     }
 150     if (is_good_init && !tty_use_truecolors (&error) && mc_skin__default.have_true_colors)
 151     {
 152         mc_propagate_error (mcerror, 0,
 153                             _
 154                             ("Unable to use '%s' skin with true colors support:\n%s\nDefault skin has been loaded"),
 155                             mc_skin__default.name, error->message);
 156         g_error_free (error);
 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     if (is_good_init && !tty_use_256colors () && mc_skin__default.have_256_colors)
 163     {
 164         mc_propagate_error (mcerror, 0,
 165                             _
 166                             ("Unable to use '%s' skin with 256 colors support\non non-256 colors terminal.\nDefault skin has been loaded"),
 167                             mc_skin__default.name);
 168         mc_skin_try_to_load_default ();
 169         mc_skin_colors_old_configure (&mc_skin__default);
 170         (void) mc_skin_ini_file_parse (&mc_skin__default);
 171         is_good_init = FALSE;
 172     }
 173     mc_skin_is_init = TRUE;
 174     return is_good_init;
 175 }
 176
 177 /* --------------------------------------------------------------------------------------------- */
 178
 179 void
 180 mc_skin_deinit (void)
 181 {
 182     tty_color_free_all_tmp ();
 183     tty_color_free_all_non_tmp ();
 184
 185     MC_PTR_FREE (mc_skin__default.name);
 186     g_hash_table_destroy (mc_skin__default.colors);
 187     mc_skin__default.colors = NULL;
 188
 189     MC_PTR_FREE (mc_skin__default.description);
 190
 191     mc_config_deinit (mc_skin__default.config);
 192     mc_skin__default.config = NULL;
 193
 194     mc_skin_is_init = FALSE;
 195 }
 196
 197 /* --------------------------------------------------------------------------------------------- */
 198
 199 gchar *
 200 mc_skin_get (const gchar * group, const gchar * key, const gchar * default_value)
 201 {
 202     if (mc_global.tty.ugly_line_drawing)
 203     {
 204         return g_strdup (default_value);
 205     }
 206     return mc_config_get_string (mc_skin__default.config, group, key, default_value);
 207 }
 208
 209 /* --------------------------------------------------------------------------------------------- */