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 GNOME_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 %" G_GSIZE_FORMAT " written %" G_GSIZE_FORMAT "\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;
}
static void
init_encodings_combo (GtkWidget *widget)
{
GtkCellRenderer *renderer;
GHashTableIter ht_iter;
gpointer key, value;
gs_unref_object GtkListStore *store;
store = gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_STRING);
g_hash_table_iter_init (&ht_iter, terminal_app_get_encodings (terminal_app_get ()));
while (g_hash_table_iter_next (&ht_iter, &key, &value)) {
TerminalEncoding *encoding = value;
GtkTreeIter iter;
gs_free char *name;
name = g_markup_printf_escaped ("%s <span size=\"small\">%s</span>",
terminal_encoding_get_charset (encoding),
encoding->name);
gtk_list_store_insert_with_values (store, &iter, -1,
ENCODINGS_COLUMN_MARKUP, name,
ENCODINGS_COLUMN_ID, terminal_encoding_get_charset (encoding),
-1);
}
/* Now turn on sorting */
gtk_tree_sortable_set_sort_column_id (GTK_TREE_SORTABLE (store),
ENCODINGS_COLUMN_MARKUP,
GTK_SORT_ASCENDING);
gtk_combo_box_set_id_column (GTK_COMBO_BOX (widget), ENCODINGS_COLUMN_ID);
gtk_combo_box_set_model (GTK_COMBO_BOX (widget), GTK_TREE_MODEL (store));
/* Cell renderer */
renderer = gtk_cell_renderer_text_new ();
gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (widget), renderer, TRUE);
gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (widget), renderer,
"markup", ENCODINGS_COLUMN_MARKUP, NULL);
}
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);
}
/**
* terminal_app_ensure_encoding:
* @app:
* @charset: (allow-none): a charset, or %NULL
*
* Ensures there's a #TerminalEncoding for @charset available. If @charset
* is %NULL, returns the #TerminalEncoding for the locale's charset. If
* @charset is not a known charset, returns a #TerminalEncoding for a
* custom charset.
*
* Returns: (transfer none): a #TerminalEncoding, or %NULL
*/
TerminalEncoding *
terminal_app_ensure_encoding (TerminalApp *app,
const char *charset)
{
TerminalEncoding *encoding;
encoding = g_hash_table_lookup (app->encodings, charset_validated (charset));
if (encoding == NULL)
{
encoding = terminal_encoding_new (charset,
_("User Defined"),
TRUE,
TRUE /* scary! */);
g_hash_table_insert (app->encodings,
(gpointer) terminal_encoding_get_charset (encoding),
encoding);
}
return encoding;
}
