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/*
Configure module for the Midnight Commander
Copyright (C) 1994-2024
Free Software Foundation, Inc.
Authors:
Radek Doulik, 1994, 1995
Miguel de Icaza, 1994, 1995
Jakub Jelinek, 1995
Andrej Borsenkow, 1996
Norbert Warmuth, 1997
Andrew Borodin <aborodin@vmail.ru>, 2009-2023
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/>.
*/
/** \file history.c
* \brief Source: save and load history
*/
#include <config.h>
#include <stdlib.h>
#include <sys/types.h>
#include "lib/global.h"
#include "lib/fileloc.h" /* MC_HISTORY_FILE */
#include "lib/strutil.h"
#include "lib/util.h" /* list_append_unique */
#include "lib/mcconfig.h"
/*** global variables ****************************************************************************/
/* how much history items are used */
int num_history_items_recorded = 60;
/*** file scope macro definitions ****************************************************************/
/*** file scope type declarations ****************************************************************/
/*** file scope variables ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/*** file scope functions ************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/* --------------------------------------------------------------------------------------------- */
/*** public functions ****************************************************************************/
/* --------------------------------------------------------------------------------------------- */
/**
* Load the history from the ${XDG_DATA_HOME}/mc/history file.
* It is called with the widgets history name and returns the GList list.
*/
GList *
mc_config_history_get (const char *name)
{
GList *hist = NULL;
char *profile;
mc_config_t *cfg;
if (num_history_items_recorded == 0) /* this is how to disable */
return NULL;
if (name == NULL || *name == '\0')
return NULL;
profile = mc_config_get_full_path (MC_HISTORY_FILE);
cfg = mc_config_init (profile, TRUE);
hist = mc_config_history_load (cfg, name);
mc_config_deinit (cfg);
g_free (profile);
return hist;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Get the recent item of a history from the ${XDG_DATA_HOME}/mc/history file.
*
* TODO: get rid of load the entire history to get the only top item.
*/
char *
mc_config_history_get_recent_item (const char *name)
{
GList *history;
char *item = NULL;
history = mc_config_history_get (name);
if (history != NULL)
{
/* FIXME: can history->data be NULL? */
item = (char *) history->data;
history->data = NULL;
history = g_list_first (history);
g_list_free_full (history, g_free);
}
return item;
}
/* --------------------------------------------------------------------------------------------- */
/**
* Load history from the mc_config
*/
GList *
mc_config_history_load (mc_config_t * cfg, const char *name)
{
size_t i;
GList *hist = NULL;
char **keys;
size_t keys_num = 0;
GIConv conv = INVALID_CONV;
GString *buffer;
if (name == NULL || *name == '\0')
return NULL;
/* get number of keys */
keys = mc_config_get_keys (cfg, name, &keys_num);
g_strfreev (keys);
/* create charset conversion handler to convert strings
from utf-8 to system codepage */
if (!mc_global.utf8_display)
conv = str_crt_conv_from ("UTF-8");
buffer = g_string_sized_new (64);
for (i = 0; i < keys_num; i++)
{
char key[BUF_TINY];
char *this_entry;
g_snprintf (key, sizeof (key), "%lu", (unsigned long) i);
this_entry = mc_config_get_string_raw (cfg, name, key, "");
if (this_entry == NULL)
continue;
if (conv == INVALID_CONV)
hist = list_append_unique (hist, this_entry);
else
{
g_string_set_size (buffer, 0);
if (str_convert (conv, this_entry, buffer) == ESTR_FAILURE)
hist = list_append_unique (hist, this_entry);
else
{
hist = list_append_unique (hist, g_strndup (buffer->str, buffer->len));
g_free (this_entry);
}
}
}
g_string_free (buffer, TRUE);
if (conv != INVALID_CONV)
str_close_conv (conv);
/* return pointer to the last entry in the list */
return g_list_last (hist);
}
/* --------------------------------------------------------------------------------------------- */
/**
* Save history to the mc_config, but don't save config to file
*/
void
mc_config_history_save (mc_config_t * cfg, const char *name, GList * h)
{
GIConv conv = INVALID_CONV;
GString *buffer;
int i;
if (name == NULL || *name == '\0' || h == NULL)
return;
/* go to end of list */
h = g_list_last (h);
/* go back 60 places */
for (i = 0; (i < num_history_items_recorded - 1) && (h->prev != NULL); i++)
h = g_list_previous (h);
mc_config_del_group (cfg, name);
/* create charset conversion handler to convert strings
from system codepage to UTF-8 */
if (!mc_global.utf8_display)
conv = str_crt_conv_to ("UTF-8");
buffer = g_string_sized_new (64);
/* dump history into profile */
for (i = 0; h != NULL; h = g_list_next (h))
{
char key[BUF_TINY];
char *text = (char *) h->data;
/* We shouldn't have null entries, but let's be sure */
if (text == NULL)
continue;
g_snprintf (key, sizeof (key), "%d", i++);
if (conv == INVALID_CONV)
mc_config_set_string_raw (cfg, name, key, text);
else
{
g_string_set_size (buffer, 0);
if (str_convert (conv, text, buffer) == ESTR_FAILURE)
mc_config_set_string_raw (cfg, name, key, text);
else
mc_config_set_string_raw (cfg, name, key, buffer->str);
}
}
g_string_free (buffer, TRUE);
if (conv != INVALID_CONV)
str_close_conv (conv);
}
/* --------------------------------------------------------------------------------------------- */
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