diff options
Diffstat (limited to 'lib/mcconfig/common.c')
| -rw-r--r-- | lib/mcconfig/common.c | 287 |
1 files changed, 287 insertions, 0 deletions
diff --git a/lib/mcconfig/common.c b/lib/mcconfig/common.c new file mode 100644 index 0000000..75979be --- /dev/null +++ b/lib/mcconfig/common.c @@ -0,0 +1,287 @@ +/* + Configure module for the Midnight Commander + + Copyright (C) 1994-2023 + 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 ****************************************************************/ + +/*** forward declarations (file scope functions) *************************************************/ + +/*** 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); +} + +/* --------------------------------------------------------------------------------------------- */ |