Add .hct support to colors.conf import

src/common/gtk3-theme-service.c

@@ -1221,6 +1221,94 @@ extract_archive (const char *source, GError **error)
 	#endif
 }
 
+static char *
+path_find_first_file_recursive (const char *root, const char *name, int depth)
+{
+	GDir *dir;
+	const char *entry;
+
+	if (!root || !name || depth < 0 || !g_file_test (root, G_FILE_TEST_IS_DIR))
+		return NULL;
+
+	{
+		char *candidate = g_build_filename (root, name, NULL);
+		if (g_file_test (candidate, G_FILE_TEST_IS_REGULAR))
+			return candidate;
+		g_free (candidate);
+	}
+
+	if (depth == 0)
+		return NULL;
+
+	dir = g_dir_open (root, 0, NULL);
+	if (!dir)
+		return NULL;
+
+	while ((entry = g_dir_read_name (dir)) != NULL)
+	{
+		char *child = g_build_filename (root, entry, NULL);
+		char *found = NULL;
+
+		if (g_file_test (child, G_FILE_TEST_IS_DIR))
+			found = path_find_first_file_recursive (child, name, depth - 1);
+		g_free (child);
+		if (found)
+		{
+			g_dir_close (dir);
+			return found;
+		}
+	}
+
+	g_dir_close (dir);
+	return NULL;
+}
+
+gboolean
+zoitechat_gtk3_theme_service_read_archive_text_file (const char *archive_path, const char *name, char **contents, GError **error)
+{
+	char *root;
+	char *path;
+	gboolean ok;
+	GError *local_error = NULL;
+
+	if (contents)
+		*contents = NULL;
+	if (!archive_path || !*archive_path)
+		return g_set_error_literal (error, G_FILE_ERROR, G_FILE_ERROR_INVAL, "No archive path provided."), FALSE;
+	if (!name || !*name)
+		return g_set_error_literal (error, G_FILE_ERROR, G_FILE_ERROR_INVAL, "No file name provided."), FALSE;
+	if (!contents)
+		return g_set_error_literal (error, G_FILE_ERROR, G_FILE_ERROR_INVAL, "No output buffer provided."), FALSE;
+
+	root = extract_archive (archive_path, error);
+	if (!root)
+		return FALSE;
+
+	path = path_find_first_file_recursive (root, name, 8);
+	if (!path)
+	{
+		remove_tree (root);
+		g_free (root);
+		return g_set_error_literal (error, G_FILE_ERROR, G_FILE_ERROR_NOENT, "Requested file was not found in archive."), FALSE;
+	}
+
+	ok = g_file_get_contents (path, contents, NULL, &local_error);
+	g_free (path);
+	remove_tree (root);
+	g_free (root);
+
+	if (!ok)
+	{
+		if (error)
+			*error = local_error;
+		else
+			g_clear_error (&local_error);
+		return FALSE;
+	}
+
+	return TRUE;
+}
+
 gboolean
 zoitechat_gtk3_theme_service_import (const char *source_path, char **imported_id, GError **error)
 {