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Diffstat (limited to 'lib/mcconfig/history.c')
| -rw-r--r-- | lib/mcconfig/history.c | 219 |
1 files changed, 219 insertions, 0 deletions
diff --git a/lib/mcconfig/history.c b/lib/mcconfig/history.c new file mode 100644 index 0000000..9a288e3 --- /dev/null +++ b/lib/mcconfig/history.c @@ -0,0 +1,219 @@ +/* + Widgets for the Midnight Commander + + Copyright (C) 1994-2022 + 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>, 2009-2019 + + 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_CACHE_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; +} + +/* --------------------------------------------------------------------------------------------- */ + +/** + * 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); + + if (name != NULL) + 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); +} + +/* --------------------------------------------------------------------------------------------- */ |