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-rw-r--r--lib/mcconfig/common.c285
1 files changed, 285 insertions, 0 deletions
diff --git a/lib/mcconfig/common.c b/lib/mcconfig/common.c
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+++ b/lib/mcconfig/common.c
@@ -0,0 +1,285 @@
+/*
+ Configure module for the Midnight Commander
+
+ Copyright (C) 1994-2022
+ Free Software Foundation, Inc.
+
+ 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/>.
+ */
+
+#include <config.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h> /* extern int errno */
+
+#include "lib/global.h"
+#include "lib/vfs/vfs.h" /* mc_stat */
+#include "lib/util.h"
+
+#include "lib/mcconfig.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/* --------------------------------------------------------------------------------------------- */
+/*** file scope functions ************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+static gboolean
+mc_config_new_or_override_file (mc_config_t * mc_config, const gchar * ini_path, GError ** mcerror)
+{
+ gchar *data, *written_data;
+ gsize len, total_written;
+ gboolean ret;
+ int fd;
+ ssize_t cur_written;
+ vfs_path_t *ini_vpath;
+
+ mc_return_val_if_error (mcerror, FALSE);
+
+ data = g_key_file_to_data (mc_config->handle, &len, NULL);
+ if (!exist_file (ini_path))
+ {
+ ret = g_file_set_contents (ini_path, data, len, mcerror);
+ g_free (data);
+ return ret;
+ }
+
+ mc_util_make_backup_if_possible (ini_path, "~");
+
+ ini_vpath = vfs_path_from_str (ini_path);
+ fd = mc_open (ini_vpath, O_WRONLY | O_TRUNC, 0);
+ vfs_path_free (ini_vpath, TRUE);
+
+ if (fd == -1)
+ {
+ mc_propagate_error (mcerror, 0, "%s", unix_error_string (errno));
+ g_free (data);
+ return FALSE;
+ }
+
+ for (written_data = data, total_written = len;
+ (cur_written = mc_write (fd, (const void *) written_data, total_written)) > 0;
+ written_data += cur_written, total_written -= cur_written)
+ ;
+
+ mc_close (fd);
+ g_free (data);
+
+ if (cur_written == -1)
+ {
+ mc_util_restore_from_backup_if_possible (ini_path, "~");
+ mc_propagate_error (mcerror, 0, "%s", unix_error_string (errno));
+ return FALSE;
+ }
+
+ mc_util_unlink_backup_if_possible (ini_path, "~");
+ return TRUE;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+mc_config_t *
+mc_config_init (const gchar * ini_path, gboolean read_only)
+{
+ mc_config_t *mc_config;
+ struct stat st;
+
+ mc_config = g_try_malloc0 (sizeof (mc_config_t));
+ if (mc_config == NULL)
+ return NULL;
+
+ mc_config->handle = g_key_file_new ();
+ if (mc_config->handle == NULL)
+ {
+ g_free (mc_config);
+ return NULL;
+ }
+
+ if (ini_path == NULL)
+ return mc_config;
+
+ if (exist_file (ini_path))
+ {
+ vfs_path_t *vpath;
+
+ vpath = vfs_path_from_str (ini_path);
+ if (mc_stat (vpath, &st) == 0 && st.st_size != 0)
+ {
+ GKeyFileFlags flags = G_KEY_FILE_NONE;
+
+ if (!read_only)
+ flags |= G_KEY_FILE_KEEP_COMMENTS;
+
+ /* file exists and not empty */
+ g_key_file_load_from_file (mc_config->handle, ini_path, flags, NULL);
+ }
+ vfs_path_free (vpath, TRUE);
+ }
+
+ mc_config->ini_path = g_strdup (ini_path);
+ return mc_config;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+mc_config_deinit (mc_config_t * mc_config)
+{
+ if (mc_config != NULL)
+ {
+ g_free (mc_config->ini_path);
+ g_key_file_free (mc_config->handle);
+ g_free (mc_config);
+ }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_config_has_param (const mc_config_t * mc_config, const char *group, const gchar * param)
+{
+ char *value;
+ gboolean ret;
+
+ g_return_val_if_fail (mc_config != NULL, FALSE);
+
+ value = g_key_file_get_value (mc_config->handle, group, param, NULL);
+ ret = value != NULL;
+ g_free (value);
+
+ return ret;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_config_has_group (mc_config_t * mc_config, const char *group)
+{
+ if (mc_config == NULL || group == NULL)
+ return FALSE;
+
+ return g_key_file_has_group (mc_config->handle, group);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_config_del_key (mc_config_t * mc_config, const char *group, const gchar * param)
+{
+ if (mc_config == NULL || group == NULL || param == NULL)
+ return FALSE;
+
+ return g_key_file_remove_key (mc_config->handle, group, param, NULL);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_config_del_group (mc_config_t * mc_config, const char *group)
+{
+ if (mc_config == NULL || group == NULL)
+ return FALSE;
+
+ return g_key_file_remove_group (mc_config->handle, group, NULL);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_config_read_file (mc_config_t * mc_config, const gchar * ini_path, gboolean read_only,
+ gboolean remove_empty)
+{
+ mc_config_t *tmp_config;
+ gchar **groups, **curr_grp;
+ gchar *value;
+ gboolean ok;
+
+ if (mc_config == NULL)
+ return FALSE;
+
+ tmp_config = mc_config_init (ini_path, read_only);
+ if (tmp_config == NULL)
+ return FALSE;
+
+ groups = mc_config_get_groups (tmp_config, NULL);
+ ok = (*groups != NULL);
+
+ for (curr_grp = groups; *curr_grp != NULL; curr_grp++)
+ {
+ gchar **keys, **curr_key;
+
+ keys = mc_config_get_keys (tmp_config, *curr_grp, NULL);
+
+ for (curr_key = keys; *curr_key != NULL; curr_key++)
+ {
+ value = g_key_file_get_value (tmp_config->handle, *curr_grp, *curr_key, NULL);
+ if (value != NULL)
+ {
+ if (*value == '\0' && remove_empty)
+ g_key_file_remove_key (mc_config->handle, *curr_grp, *curr_key, NULL);
+ else
+ g_key_file_set_value (mc_config->handle, *curr_grp, *curr_key, value);
+ g_free (value);
+ }
+ else if (remove_empty)
+ g_key_file_remove_key (mc_config->handle, *curr_grp, *curr_key, NULL);
+ }
+ g_strfreev (keys);
+ }
+
+ g_strfreev (groups);
+ mc_config_deinit (tmp_config);
+
+ return ok;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_config_save_file (mc_config_t * mc_config, GError ** mcerror)
+{
+ mc_return_val_if_error (mcerror, FALSE);
+
+ if (mc_config == NULL || mc_config->ini_path == NULL)
+ return FALSE;
+
+ return mc_config_new_or_override_file (mc_config, mc_config->ini_path, mcerror);
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+mc_config_save_to_file (mc_config_t * mc_config, const gchar * ini_path, GError ** mcerror)
+{
+ mc_return_val_if_error (mcerror, FALSE);
+
+ if (mc_config == NULL)
+ return FALSE;
+
+ return mc_config_new_or_override_file (mc_config, ini_path, mcerror);
+}
+
+/* --------------------------------------------------------------------------------------------- */
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