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authorPerberos <[email protected]>2011-11-06 17:13:49 -0300
committerPerberos <[email protected]>2011-11-06 17:13:49 -0300
commit13e6e4ab1290cda9426eaedfeda70f7491b6b083 (patch)
tree2b9b2e1eac4cc6a161bea6f2197de4513ff1ddf7 /src/terminal-encoding.c
downloadmate-terminal-13e6e4ab1290cda9426eaedfeda70f7491b6b083.tar.bz2
mate-terminal-13e6e4ab1290cda9426eaedfeda70f7491b6b083.tar.xz
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+/*
+ * Copyright © 2002 Red Hat, Inc.
+ * Copyright © 2008 Christian Persch
+ *
+ * Mate-terminal 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.
+ *
+ * Mate-terminal 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/>.
+ */
+
+#include <config.h>
+
+#include <string.h>
+
+#include <gtk/gtk.h>
+
+#include "terminal-app.h"
+#include "terminal-debug.h"
+#include "terminal-encoding.h"
+#include "terminal-intl.h"
+#include "terminal-profile.h"
+#include "terminal-util.h"
+
+/* Overview
+ *
+ * There's a list of character sets stored in mateconf, indicating
+ * which encodings to display in the encoding menu.
+ *
+ * We have a pre-canned list of available encodings
+ * (hardcoded in the table below) that can be added to
+ * the encoding menu, and to give a human-readable name
+ * to certain encodings.
+ *
+ * If the mateconf list contains an encoding not in the
+ * predetermined table, then that encoding is
+ * labeled "user defined" but still appears in the menu.
+ */
+
+static const struct {
+ const char *charset;
+ const char *name;
+} encodings[] = {
+ { "ISO-8859-1", N_("Western") },
+ { "ISO-8859-2", N_("Central European") },
+ { "ISO-8859-3", N_("South European") },
+ { "ISO-8859-4", N_("Baltic") },
+ { "ISO-8859-5", N_("Cyrillic") },
+ { "ISO-8859-6", N_("Arabic") },
+ { "ISO-8859-7", N_("Greek") },
+ { "ISO-8859-8", N_("Hebrew Visual") },
+ { "ISO-8859-8-I", N_("Hebrew") },
+ { "ISO-8859-9", N_("Turkish") },
+ { "ISO-8859-10", N_("Nordic") },
+ { "ISO-8859-13", N_("Baltic") },
+ { "ISO-8859-14", N_("Celtic") },
+ { "ISO-8859-15", N_("Western") },
+ { "ISO-8859-16", N_("Romanian") },
+ { "UTF-8", N_("Unicode") },
+ { "ARMSCII-8", N_("Armenian") },
+ { "BIG5", N_("Chinese Traditional") },
+ { "BIG5-HKSCS", N_("Chinese Traditional") },
+ { "CP866", N_("Cyrillic/Russian") },
+ { "EUC-JP", N_("Japanese") },
+ { "EUC-KR", N_("Korean") },
+ { "EUC-TW", N_("Chinese Traditional") },
+ { "GB18030", N_("Chinese Simplified") },
+ { "GB2312", N_("Chinese Simplified") },
+ { "GBK", N_("Chinese Simplified") },
+ { "GEORGIAN-PS", N_("Georgian") },
+ { "IBM850", N_("Western") },
+ { "IBM852", N_("Central European") },
+ { "IBM855", N_("Cyrillic") },
+ { "IBM857", N_("Turkish") },
+ { "IBM862", N_("Hebrew") },
+ { "IBM864", N_("Arabic") },
+ { "ISO-2022-JP", N_("Japanese") },
+ { "ISO-2022-KR", N_("Korean") },
+ { "ISO-IR-111", N_("Cyrillic") },
+ { "KOI8-R", N_("Cyrillic") },
+ { "KOI8-U", N_("Cyrillic/Ukrainian") },
+ { "MAC_ARABIC", N_("Arabic") },
+ { "MAC_CE", N_("Central European") },
+ { "MAC_CROATIAN", N_("Croatian") },
+ { "MAC-CYRILLIC", N_("Cyrillic") },
+ { "MAC_DEVANAGARI", N_("Hindi") },
+ { "MAC_FARSI", N_("Persian") },
+ { "MAC_GREEK", N_("Greek") },
+ { "MAC_GUJARATI", N_("Gujarati") },
+ { "MAC_GURMUKHI", N_("Gurmukhi") },
+ { "MAC_HEBREW", N_("Hebrew") },
+ { "MAC_ICELANDIC", N_("Icelandic") },
+ { "MAC_ROMAN", N_("Western") },
+ { "MAC_ROMANIAN", N_("Romanian") },
+ { "MAC_TURKISH", N_("Turkish") },
+ { "MAC_UKRAINIAN", N_("Cyrillic/Ukrainian") },
+ { "SHIFT_JIS", N_("Japanese") },
+ { "TCVN", N_("Vietnamese") },
+ { "TIS-620", N_("Thai") },
+ { "UHC", N_("Korean") },
+ { "VISCII", N_("Vietnamese") },
+ { "WINDOWS-1250", N_("Central European") },
+ { "WINDOWS-1251", N_("Cyrillic") },
+ { "WINDOWS-1252", N_("Western") },
+ { "WINDOWS-1253", N_("Greek") },
+ { "WINDOWS-1254", N_("Turkish") },
+ { "WINDOWS-1255", N_("Hebrew") },
+ { "WINDOWS-1256", N_("Arabic") },
+ { "WINDOWS-1257", N_("Baltic") },
+ { "WINDOWS-1258", N_("Vietnamese") },
+#if 0
+ /* These encodings do NOT pass-through ASCII, so are always rejected.
+ * FIXME: why are they in this table; or rather why do we need
+ * the ASCII pass-through requirement?
+ */
+ { "UTF-7", N_("Unicode") },
+ { "UTF-16", N_("Unicode") },
+ { "UCS-2", N_("Unicode") },
+ { "UCS-4", N_("Unicode") },
+ { "JOHAB", N_("Korean") },
+#endif
+};
+
+typedef struct {
+ GtkWidget *dialog;
+ GtkListStore *base_store;
+ GtkTreeView *available_tree_view;
+ GtkTreeSelection *available_selection;
+ GtkTreeModel *available_model;
+ GtkTreeView *active_tree_view;
+ GtkTreeSelection *active_selection;
+ GtkTreeModel *active_model;
+ GtkWidget *add_button;
+ GtkWidget *remove_button;
+} EncodingDialogData;
+
+static GtkWidget *encoding_dialog = NULL;
+
+TerminalEncoding *
+terminal_encoding_new (const char *charset,
+ const char *display_name,
+ gboolean is_custom,
+ gboolean force_valid)
+{
+ TerminalEncoding *encoding;
+
+ encoding = g_slice_new (TerminalEncoding);
+ encoding->refcount = 1;
+ encoding->id = g_strdup (charset);
+ encoding->name = g_strdup (display_name);
+ encoding->valid = encoding->validity_checked = force_valid;
+ encoding->is_custom = is_custom;
+ encoding->is_active = FALSE;
+
+ return encoding;
+}
+
+TerminalEncoding*
+terminal_encoding_ref (TerminalEncoding *encoding)
+{
+ g_return_val_if_fail (encoding != NULL, NULL);
+
+ encoding->refcount++;
+ return encoding;
+}
+
+void
+terminal_encoding_unref (TerminalEncoding *encoding)
+{
+ if (--encoding->refcount > 0)
+ return;
+
+ g_free (encoding->name);
+ g_free (encoding->id);
+ g_slice_free (TerminalEncoding, encoding);
+}
+
+const char *
+terminal_encoding_get_id (TerminalEncoding *encoding)
+{
+ g_return_val_if_fail (encoding != NULL, NULL);
+
+ return encoding->id;
+}
+
+const char *
+terminal_encoding_get_charset (TerminalEncoding *encoding)
+{
+ g_return_val_if_fail (encoding != NULL, NULL);
+
+ if (strcmp (encoding->id, "current") == 0)
+ {
+ const char *charset;
+
+ g_get_charset (&charset);
+ return charset;
+ }
+
+ return encoding->id;
+}
+
+gboolean
+terminal_encoding_is_valid (TerminalEncoding *encoding)
+{
+ /* All of the printing ASCII characters from space (32) to the tilde (126) */
+ static const char ascii_sample[] =
+ " !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
+ char *converted;
+ gsize bytes_read = 0, bytes_written = 0;
+ GError *error = NULL;
+
+ if (encoding->validity_checked)
+ return encoding->valid;
+
+ /* Test that the encoding is a proper superset of ASCII (which naive
+ * apps are going to use anyway) by attempting to validate the text
+ * using the current encoding. This also flushes out any encodings
+ * which the underlying GIConv implementation can't support.
+ */
+ converted = g_convert (ascii_sample, sizeof (ascii_sample) - 1,
+ terminal_encoding_get_charset (encoding), "UTF-8",
+ &bytes_read, &bytes_written, &error);
+
+ /* The encoding is only valid if ASCII passes through cleanly. */
+ encoding->valid = (bytes_read == (sizeof (ascii_sample) - 1)) &&
+ (converted != NULL) &&
+ (strcmp (converted, ascii_sample) == 0);
+
+#ifdef MATE_ENABLE_DEBUG
+ _TERMINAL_DEBUG_IF (TERMINAL_DEBUG_ENCODINGS)
+ {
+ if (!encoding->valid)
+ {
+ _terminal_debug_print (TERMINAL_DEBUG_ENCODINGS,
+ "Rejecting encoding %s as invalid:\n",
+ terminal_encoding_get_charset (encoding));
+ _terminal_debug_print (TERMINAL_DEBUG_ENCODINGS,
+ " input \"%s\"\n",
+ ascii_sample);
+ _terminal_debug_print (TERMINAL_DEBUG_ENCODINGS,
+ " output \"%s\" bytes read %u written %u\n",
+ converted ? converted : "(null)", bytes_read, bytes_written);
+ if (error)
+ _terminal_debug_print (TERMINAL_DEBUG_ENCODINGS,
+ " Error: %s\n",
+ error->message);
+ }
+ else
+ _terminal_debug_print (TERMINAL_DEBUG_ENCODINGS,
+ "Encoding %s is valid\n\n",
+ terminal_encoding_get_charset (encoding));
+ }
+#endif
+
+ g_clear_error (&error);
+ g_free (converted);
+
+ encoding->validity_checked = TRUE;
+ return encoding->valid;
+}
+
+GType
+terminal_encoding_get_type (void)
+{
+ static GType type = 0;
+
+ if (G_UNLIKELY (type == 0)) {
+ type = g_boxed_type_register_static (I_("TerminalEncoding"),
+ (GBoxedCopyFunc) terminal_encoding_ref,
+ (GBoxedFreeFunc) terminal_encoding_unref);
+ }
+
+ return type;
+}
+
+static void
+update_active_encodings_mateconf (void)
+{
+ GSList *list, *l;
+ GSList *strings = NULL;
+ MateConfClient *conf;
+
+ list = terminal_app_get_active_encodings (terminal_app_get ());
+ for (l = list; l != NULL; l = l->next)
+ {
+ TerminalEncoding *encoding = (TerminalEncoding *) l->data;
+
+ strings = g_slist_prepend (strings, (gpointer) terminal_encoding_get_id (encoding));
+ }
+
+ conf = mateconf_client_get_default ();
+ mateconf_client_set_list (conf,
+ CONF_GLOBAL_PREFIX"/active_encodings",
+ MATECONF_VALUE_STRING,
+ strings,
+ NULL);
+ g_object_unref (conf);
+
+ g_slist_free (strings);
+ g_slist_foreach (list, (GFunc) terminal_encoding_unref, NULL);
+ g_slist_free (list);
+}
+
+static void
+response_callback (GtkWidget *window,
+ int id,
+ EncodingDialogData *data)
+{
+ if (id == GTK_RESPONSE_HELP)
+ terminal_util_show_help ("mate-terminal-encoding-add", GTK_WINDOW (window));
+ else
+ gtk_widget_destroy (GTK_WIDGET (window));
+}
+
+enum
+{
+ COLUMN_NAME,
+ COLUMN_CHARSET,
+ COLUMN_DATA,
+ N_COLUMNS
+};
+
+static void
+selection_changed_cb (GtkTreeSelection *selection,
+ EncodingDialogData *data)
+{
+ GtkWidget *button;
+ gboolean have_selection;
+
+ if (selection == data->available_selection)
+ button = data->add_button;
+ else if (selection == data->active_selection)
+ button = data->remove_button;
+ else
+ g_assert_not_reached ();
+
+ have_selection = gtk_tree_selection_get_selected (selection, NULL, NULL);
+ gtk_widget_set_sensitive (button, have_selection);
+}
+
+static void
+button_clicked_cb (GtkWidget *button,
+ EncodingDialogData *data)
+{
+ GtkTreeSelection *selection;
+ GtkTreeModel *model;
+ GtkTreeIter filter_iter, iter;
+ TerminalEncoding *encoding;
+
+ if (button == data->add_button)
+ selection = data->available_selection;
+ else if (button == data->remove_button)
+ selection = data->active_selection;
+ else
+ g_assert_not_reached ();
+
+ if (!gtk_tree_selection_get_selected (selection, &model, &filter_iter))
+ return;
+
+ gtk_tree_model_filter_convert_iter_to_child_iter (GTK_TREE_MODEL_FILTER (model),
+ &iter,
+ &filter_iter);
+
+ model = GTK_TREE_MODEL (data->base_store);
+ gtk_tree_model_get (model, &iter, COLUMN_DATA, &encoding, -1);
+ g_assert (encoding != NULL);
+
+ if (button == data->add_button)
+ encoding->is_active = TRUE;
+ else if (button == data->remove_button)
+ encoding->is_active = FALSE;
+ else
+ g_assert_not_reached ();
+
+ terminal_encoding_unref (encoding);
+
+ /* We don't need to emit row-changed here, since updating the mateconf pref
+ * will update the models.
+ */
+ update_active_encodings_mateconf ();
+}
+
+static void
+liststore_insert_encoding (gpointer key,
+ TerminalEncoding *encoding,
+ GtkListStore *store)
+{
+ GtkTreeIter iter;
+
+ if (!terminal_encoding_is_valid (encoding))
+ return;
+
+ gtk_list_store_insert_with_values (store, &iter, -1,
+ COLUMN_CHARSET, terminal_encoding_get_charset (encoding),
+ COLUMN_NAME, encoding->name,
+ COLUMN_DATA, encoding,
+ -1);
+}
+
+static gboolean
+filter_active_encodings (GtkTreeModel *child_model,
+ GtkTreeIter *child_iter,
+ gpointer data)
+{
+ TerminalEncoding *encoding;
+ gboolean active = GPOINTER_TO_UINT (data);
+ gboolean visible;
+
+ gtk_tree_model_get (child_model, child_iter, COLUMN_DATA, &encoding, -1);
+ visible = active ? encoding->is_active : !encoding->is_active;
+ terminal_encoding_unref (encoding);
+
+ return visible;
+}
+
+static GtkTreeModel *
+encodings_create_treemodel (GtkListStore *base_store,
+ gboolean active)
+{
+ GtkTreeModel *model;
+
+ model = gtk_tree_model_filter_new (GTK_TREE_MODEL (base_store), NULL);
+ gtk_tree_model_filter_set_visible_func (GTK_TREE_MODEL_FILTER (model),
+ filter_active_encodings,
+ GUINT_TO_POINTER (active), NULL);
+
+ return model;
+}
+
+static void
+encodings_list_changed_cb (TerminalApp *app,
+ EncodingDialogData *data)
+{
+ gtk_list_store_clear (data->base_store);
+
+ g_hash_table_foreach (terminal_app_get_encodings (app), (GHFunc) liststore_insert_encoding, data->base_store);
+}
+
+static void
+encoding_dialog_data_free (EncodingDialogData *data)
+{
+ g_signal_handlers_disconnect_by_func (terminal_app_get (),
+ G_CALLBACK (encodings_list_changed_cb),
+ data);
+
+ g_free (data);
+}
+
+void
+terminal_encoding_dialog_show (GtkWindow *transient_parent)
+{
+ TerminalApp *app;
+ GtkCellRenderer *cell_renderer;
+ GtkTreeViewColumn *column;
+ GtkTreeModel *model;
+ EncodingDialogData *data;
+
+ if (encoding_dialog)
+ {
+ gtk_window_set_transient_for (GTK_WINDOW (encoding_dialog), transient_parent);
+ gtk_window_present (GTK_WINDOW (encoding_dialog));
+ return;
+ }
+
+ data = g_new (EncodingDialogData, 1);
+
+ if (!terminal_util_load_builder_file ("encodings-dialog.ui",
+ "encodings-dialog", &data->dialog,
+ "add-button", &data->add_button,
+ "remove-button", &data->remove_button,
+ "available-treeview", &data->available_tree_view,
+ "displayed-treeview", &data->active_tree_view,
+ NULL))
+ {
+ g_free (data);
+ return;
+ }
+
+ g_object_set_data_full (G_OBJECT (data->dialog), "GT::Data", data, (GDestroyNotify) encoding_dialog_data_free);
+
+ gtk_window_set_transient_for (GTK_WINDOW (data->dialog), transient_parent);
+ gtk_window_set_role (GTK_WINDOW (data->dialog), "mate-terminal-encodings");
+ g_signal_connect (data->dialog, "response",
+ G_CALLBACK (response_callback), data);
+
+ /* buttons */
+ g_signal_connect (data->add_button, "clicked",
+ G_CALLBACK (button_clicked_cb), data);
+
+ g_signal_connect (data->remove_button, "clicked",
+ G_CALLBACK (button_clicked_cb), data);
+
+ /* Tree view of available encodings */
+ /* Column 1 */
+ cell_renderer = gtk_cell_renderer_text_new ();
+ column = gtk_tree_view_column_new_with_attributes (_("_Description"),
+ cell_renderer,
+ "text", COLUMN_NAME,
+ NULL);
+ gtk_tree_view_append_column (data->available_tree_view, column);
+ gtk_tree_view_column_set_sort_column_id (column, COLUMN_NAME);
+
+ /* Column 2 */
+ cell_renderer = gtk_cell_renderer_text_new ();
+ column = gtk_tree_view_column_new_with_attributes (_("_Encoding"),
+ cell_renderer,
+ "text", COLUMN_CHARSET,
+ NULL);
+ gtk_tree_view_append_column (data->available_tree_view, column);
+ gtk_tree_view_column_set_sort_column_id (column, COLUMN_CHARSET);
+
+ data->available_selection = gtk_tree_view_get_selection (data->available_tree_view);
+ gtk_tree_selection_set_mode (data->available_selection, GTK_SELECTION_BROWSE);
+
+ g_signal_connect (data->available_selection, "changed",
+ G_CALLBACK (selection_changed_cb), data);
+
+ /* Tree view of selected encodings */
+ /* Column 1 */
+ cell_renderer = gtk_cell_renderer_text_new ();
+ column = gtk_tree_view_column_new_with_attributes (_("_Description"),
+ cell_renderer,
+ "text", COLUMN_NAME,
+ NULL);
+ gtk_tree_view_append_column (data->active_tree_view, column);
+ gtk_tree_view_column_set_sort_column_id (column, COLUMN_NAME);
+
+ /* Column 2 */
+ cell_renderer = gtk_cell_renderer_text_new ();
+ column = gtk_tree_view_column_new_with_attributes (_("_Encoding"),
+ cell_renderer,
+ "text", COLUMN_CHARSET,
+ NULL);
+ gtk_tree_view_append_column (data->active_tree_view, column);
+ gtk_tree_view_column_set_sort_column_id (column, COLUMN_CHARSET);
+
+ /* Add the data */
+
+ data->active_selection = gtk_tree_view_get_selection (data->active_tree_view);
+ gtk_tree_selection_set_mode (data->active_selection, GTK_SELECTION_BROWSE);
+
+ g_signal_connect (data->active_selection, "changed",
+ G_CALLBACK (selection_changed_cb), data);
+
+ data->base_store = gtk_list_store_new (N_COLUMNS, G_TYPE_STRING, G_TYPE_STRING, TERMINAL_TYPE_ENCODING);
+
+ app = terminal_app_get ();
+ encodings_list_changed_cb (app, data);
+ g_signal_connect (app, "encoding-list-changed",
+ G_CALLBACK (encodings_list_changed_cb), data);
+
+ /* Now turn on sorting */
+ gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (data->base_store),
+ COLUMN_NAME,
+ GTK_SORT_ASCENDING);
+
+ model = encodings_create_treemodel (data->base_store, FALSE);
+ gtk_tree_view_set_model (data->available_tree_view, model);
+ g_object_unref (model);
+
+ model = encodings_create_treemodel (data->base_store, TRUE);
+ gtk_tree_view_set_model (data->active_tree_view, model);
+ g_object_unref (model);
+
+ g_object_unref (data->base_store);
+
+ gtk_window_present (GTK_WINDOW (data->dialog));
+
+ encoding_dialog = data->dialog;
+ g_signal_connect (data->dialog, "destroy",
+ G_CALLBACK (gtk_widget_destroyed), &encoding_dialog);
+}
+
+GHashTable *
+terminal_encodings_get_builtins (void)
+{
+ GHashTable *encodings_hashtable;
+ guint i;
+ TerminalEncoding *encoding;
+
+ encodings_hashtable = g_hash_table_new_full (g_str_hash, g_str_equal,
+ NULL,
+ (GDestroyNotify) terminal_encoding_unref);
+
+
+ /* Placeholder entry for the current locale's charset */
+ encoding = terminal_encoding_new ("current",
+ _("Current Locale"),
+ FALSE,
+ TRUE);
+ g_hash_table_insert (encodings_hashtable,
+ (gpointer) terminal_encoding_get_id (encoding),
+ encoding);
+
+ for (i = 0; i < G_N_ELEMENTS (encodings); ++i)
+ {
+ encoding = terminal_encoding_new (encodings[i].charset,
+ _(encodings[i].name),
+ FALSE,
+ FALSE);
+ g_hash_table_insert (encodings_hashtable,
+ (gpointer) terminal_encoding_get_id (encoding),
+ encoding);
+ }
+
+ return encodings_hashtable;
+}