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-rw-r--r--lib/tty/color.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/lib/tty/color.c b/lib/tty/color.c
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index 0000000..c79e13a
--- /dev/null
+++ b/lib/tty/color.c
@@ -0,0 +1,244 @@
+/*
+ Color setup.
+ Interface functions.
+
+ Copyright (C) 1994-2023
+ Free Software Foundation, Inc.
+
+ Written by:
+ Andrew Borodin <aborodin@vmail.ru>, 2009
+ Slava Zanko <slavazanko@gmail.com>, 2009
+ Egmont Koblinger <egmont@gmail.com>, 2010
+
+ This file is part of the Midnight Commander.
+
+ The Midnight Commander is free software: you can redistribute it
+ and/or modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ The Midnight Commander is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file color.c
+ * \brief Source: color setup
+ */
+
+#include <config.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h> /* size_t */
+
+#include "lib/global.h"
+
+#include "tty.h"
+#include "color.h"
+
+#include "color-internal.h"
+
+/*** global variables ****************************************************************************/
+
+static char *tty_color_defaults__fg = NULL;
+static char *tty_color_defaults__bg = NULL;
+static char *tty_color_defaults__attrs = NULL;
+
+/* Set if we are actually using colors */
+gboolean use_colors = FALSE;
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** forward declarations (file scope functions) *************************************************/
+
+/*** file scope variables ************************************************************************/
+
+static GHashTable *mc_tty_color__hashtable = NULL;
+
+/* --------------------------------------------------------------------------------------------- */
+/*** file scope functions ************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+tty_color_free_condition_cb (gpointer key, gpointer value, gpointer user_data)
+{
+ tty_color_pair_t *mc_color_pair = (tty_color_pair_t *) value;
+ gboolean is_temp_color;
+
+ (void) key;
+
+ is_temp_color = user_data != NULL;
+ return (mc_color_pair->is_temp == is_temp_color);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static void
+tty_color_free_all (gboolean is_temp_color)
+{
+ g_hash_table_foreach_remove (mc_tty_color__hashtable, tty_color_free_condition_cb,
+ is_temp_color ? GSIZE_TO_POINTER (1) : NULL);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+tty_color_get_next_cpn_cb (gpointer key, gpointer value, gpointer user_data)
+{
+ tty_color_pair_t *mc_color_pair = (tty_color_pair_t *) value;
+ size_t cp = GPOINTER_TO_SIZE (user_data);
+
+ (void) key;
+
+ return (cp == mc_color_pair->pair_index);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+static size_t
+tty_color_get_next__color_pair_number (void)
+{
+ size_t cp_count, cp;
+
+ cp_count = g_hash_table_size (mc_tty_color__hashtable);
+ for (cp = 0; cp < cp_count; cp++)
+ if (g_hash_table_find (mc_tty_color__hashtable, tty_color_get_next_cpn_cb,
+ GSIZE_TO_POINTER (cp)) == NULL)
+ break;
+
+ return cp;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+void
+tty_init_colors (gboolean disable, gboolean force)
+{
+ tty_color_init_lib (disable, force);
+ mc_tty_color__hashtable = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, g_free);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+tty_colors_done (void)
+{
+ tty_color_deinit_lib ();
+ g_free (tty_color_defaults__fg);
+ g_free (tty_color_defaults__bg);
+ g_free (tty_color_defaults__attrs);
+
+ g_hash_table_destroy (mc_tty_color__hashtable);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+tty_use_colors (void)
+{
+ return use_colors;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+int
+tty_try_alloc_color_pair2 (const char *fg, const char *bg, const char *attrs,
+ gboolean is_temp_color)
+{
+ gchar *color_pair;
+ tty_color_pair_t *mc_color_pair;
+ int ifg, ibg, attr;
+
+ if (fg == NULL || strcmp (fg, "base") == 0)
+ fg = tty_color_defaults__fg;
+ if (bg == NULL || strcmp (bg, "base") == 0)
+ bg = tty_color_defaults__bg;
+ if (attrs == NULL || strcmp (attrs, "base") == 0)
+ attrs = tty_color_defaults__attrs;
+
+ ifg = tty_color_get_index_by_name (fg);
+ ibg = tty_color_get_index_by_name (bg);
+ attr = tty_attr_get_bits (attrs);
+
+ color_pair = g_strdup_printf ("%d.%d.%d", ifg, ibg, attr);
+ if (color_pair == NULL)
+ return 0;
+
+ mc_color_pair =
+ (tty_color_pair_t *) g_hash_table_lookup (mc_tty_color__hashtable, (gpointer) color_pair);
+
+ if (mc_color_pair != NULL)
+ {
+ g_free (color_pair);
+ return mc_color_pair->pair_index;
+ }
+
+ mc_color_pair = g_try_new0 (tty_color_pair_t, 1);
+ if (mc_color_pair == NULL)
+ {
+ g_free (color_pair);
+ return 0;
+ }
+
+ mc_color_pair->is_temp = is_temp_color;
+ mc_color_pair->ifg = ifg;
+ mc_color_pair->ibg = ibg;
+ mc_color_pair->attr = attr;
+ mc_color_pair->pair_index = tty_color_get_next__color_pair_number ();
+
+ tty_color_try_alloc_pair_lib (mc_color_pair);
+
+ g_hash_table_insert (mc_tty_color__hashtable, (gpointer) color_pair, (gpointer) mc_color_pair);
+
+ return mc_color_pair->pair_index;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+int
+tty_try_alloc_color_pair (const char *fg, const char *bg, const char *attrs)
+{
+ return tty_try_alloc_color_pair2 (fg, bg, attrs, TRUE);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+tty_color_free_all_tmp (void)
+{
+ tty_color_free_all (TRUE);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+tty_color_free_all_non_tmp (void)
+{
+ tty_color_free_all (FALSE);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+tty_color_set_defaults (const char *fgcolor, const char *bgcolor, const char *attrs)
+{
+ g_free (tty_color_defaults__fg);
+ g_free (tty_color_defaults__bg);
+ g_free (tty_color_defaults__attrs);
+
+ tty_color_defaults__fg = g_strdup (fgcolor);
+ tty_color_defaults__bg = g_strdup (bgcolor);
+ tty_color_defaults__attrs = g_strdup (attrs);
+}
+
+/* --------------------------------------------------------------------------------------------- */
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