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/*
command-history.c : irssi
Copyright (C) 1999 Timo Sirainen
This program 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 2 of the License, or
(at your option) any later version.
This program 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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "module.h"
#include "signals.h"
#include "misc.h"
#include "special-vars.h"
#include "settings.h"
#include "fe-windows.h"
#include "window-items.h"
/* command history */
static GList *history, *history_pos;
static int history_lines, history_over_counter;
static int window_history;
void command_history_add(WINDOW_REC *window, const char *text)
{
GList **phistory, *link;
int *phistory_lines;
g_return_if_fail(text != NULL);
if (window_history) {
/* window specific command history */
phistory = &window->history;
phistory_lines = &window->history_lines;
} else {
/* global command history */
phistory = &history;
phistory_lines = &history_lines;
}
if (settings_get_int("max_command_history") < 1 || *phistory_lines < settings_get_int("max_command_history"))
(*phistory_lines)++;
else {
link = *phistory;
g_free(link->data);
*phistory = g_list_remove_link(*phistory, link);
g_list_free_1(link);
}
*phistory = g_list_append(*phistory, g_strdup(text));
}
const char *command_history_prev(WINDOW_REC *window, const char *text)
{
GList *pos, **phistory_pos;
int *phistory_over_counter;
if (window_history) {
phistory_pos = &window->history_pos;
phistory_over_counter = &window->history_over_counter;
} else {
phistory_pos = &history_pos;
phistory_over_counter = &history_over_counter;
}
pos = *phistory_pos;
if (*phistory_pos != NULL) {
*phistory_pos = (*phistory_pos)->prev;
if (*phistory_pos == NULL)
(*phistory_over_counter)++;
} else {
*phistory_pos = g_list_last(window_history ?
window->history : history);
}
if (*text != '\0' &&
(pos == NULL || strcmp(pos->data, text) != 0)) {
/* save the old entry to history */
command_history_add(window, text);
}
return *phistory_pos == NULL ? "" : (*phistory_pos)->data;
}
const char *command_history_next(WINDOW_REC *window, const char *text)
{
GList *pos, **phistory_pos;
int *phistory_over_counter;
if (window_history) {
phistory_pos = &window->history_pos;
phistory_over_counter = &window->history_over_counter;
} else {
phistory_pos = &history_pos;
phistory_over_counter = &history_over_counter;
}
pos = *phistory_pos;
if (pos != NULL)
*phistory_pos = (*phistory_pos)->next;
else if (*phistory_over_counter > 0) {
(*phistory_over_counter)--;
*phistory_pos = window_history ? window->history : history;
}
if (*text != '\0' &&
(pos == NULL || strcmp(pos->data, text) != 0)) {
/* save the old entry to history */
command_history_add(window, text);
}
return *phistory_pos == NULL ? "" : (*phistory_pos)->data;
}
void command_history_clear_pos(WINDOW_REC *window)
{
window->history_over_counter = 0;
window->history_pos = NULL;
history_over_counter = 0;
history_pos = NULL;
}
static void sig_window_destroyed(WINDOW_REC *window)
{
g_list_foreach(window->history, (GFunc) g_free, NULL);
g_list_free(window->history);
}
static char *special_history_func(const char *text, void *item, int *free_ret)
{
WINDOW_REC *window;
GList *tmp;
char *findtext, *ret;
window = item == NULL ? active_win : window_item_window(item);
findtext = g_strdup_printf("*%s*", text);
ret = NULL;
tmp = window_history ? window->history : history;
for (; tmp != NULL; tmp = tmp->next) {
const char *line = tmp->data;
if (match_wildcards(findtext, line)) {
*free_ret = TRUE;
ret = g_strdup(line);
}
}
g_free(findtext);
return ret;
}
static void read_settings(void)
{
window_history = settings_get_bool("window_history");
}
void command_history_init(void)
{
settings_add_int("history", "max_command_history", 100);
settings_add_bool("history", "window_history", FALSE);
special_history_func_set(special_history_func);
history_lines = 0; history_over_counter = 0;
history = NULL; history_pos = NULL;
read_settings();
signal_add("window destroyed", (SIGNAL_FUNC) sig_window_destroyed);
signal_add("setup changed", (SIGNAL_FUNC) read_settings);
}
void command_history_deinit(void)
{
signal_remove("window destroyed", (SIGNAL_FUNC) sig_window_destroyed);
signal_remove("setup changed", (SIGNAL_FUNC) read_settings);
g_list_foreach(history, (GFunc) g_free, NULL);
g_list_free(history);
}
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