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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 "windows.h"
#include "window-items.h"
/* command history */
static GList *cmdhist, *histpos;
static int histlines;
static int window_history;
void command_history_add(WINDOW_REC *window, const char *text, int prepend)
{
GList **pcmdhist, *link;
int *phistlines;
g_return_if_fail(text != NULL);
if (window_history) {
/* window specific command history */
pcmdhist = &window->cmdhist;
phistlines = &window->histlines;
} else {
/* global command history */
pcmdhist = &cmdhist;
phistlines = &histlines;
}
if (settings_get_int("max_command_history") < 1 || *phistlines < settings_get_int("max_command_history"))
(*phistlines)++;
else {
link = *pcmdhist;
g_free(link->data);
*pcmdhist = g_list_remove_link(*pcmdhist, link);
g_list_free_1(link);
}
if (prepend)
*pcmdhist = g_list_prepend(*pcmdhist, g_strdup(text));
else
*pcmdhist = g_list_append(*pcmdhist, g_strdup(text));
}
const char *command_history_prev(WINDOW_REC *window, const char *text)
{
GList *pos, **phistpos;
phistpos = window_history ? &window->histpos : &histpos;
pos = *phistpos;
if (*phistpos == NULL)
*phistpos = g_list_last(window_history ? window->cmdhist : cmdhist);
else
*phistpos = (*phistpos)->prev;
if (*text != '\0' &&
(pos == NULL || strcmp(pos->data, text) != 0)) {
/* save the old entry to history */
command_history_add(window, text, FALSE);
}
return *phistpos == NULL ? "" : (*phistpos)->data;
}
const char *command_history_next(WINDOW_REC *window, const char *text)
{
GList *pos, **phistpos;
phistpos = window_history ? &window->histpos : &histpos;
pos = *phistpos;
if (*phistpos == NULL)
*phistpos = window_history ? window->cmdhist : cmdhist;
else
*phistpos = (*phistpos)->next;
if (*text != '\0' &&
(pos == NULL || strcmp(pos->data, text) != 0)) {
/* save the old entry to history */
command_history_add(window, text, TRUE);
}
return *phistpos == NULL ? "" : (*phistpos)->data;
}
void command_history_clear_pos(WINDOW_REC *window)
{
window->histpos = NULL;
histpos = NULL;
}
static void sig_window_created(WINDOW_REC *window)
{
window->histlines = 0;
window->cmdhist = NULL;
window->histpos = NULL;
}
static void sig_window_destroyed(WINDOW_REC *window)
{
g_list_foreach(window->cmdhist, (GFunc) g_free, NULL);
g_list_free(window->cmdhist);
}
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->cmdhist : cmdhist;
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);
histlines = 0;
cmdhist = NULL; histpos = NULL;
read_settings();
signal_add("window created", (SIGNAL_FUNC) sig_window_created);
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 created", (SIGNAL_FUNC) sig_window_created);
signal_remove("window destroyed", (SIGNAL_FUNC) sig_window_destroyed);
signal_remove("setup changed", (SIGNAL_FUNC) read_settings);
g_list_foreach(cmdhist, (GFunc) g_free, NULL);
g_list_free(cmdhist);
}
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