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/*
fe-help.c : irssi
Copyright (C) 1999-2001 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
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "module.h"
#include "signals.h"
#include "commands.h"
#include "levels.h"
#include "misc.h"
#include "line-split.h"
#include "settings.h"
#include "printtext.h"
#include "formats.h"
static int commands_equal(COMMAND_REC *rec, COMMAND_REC *rec2)
{
int i;
if (rec->category == NULL && rec2->category != NULL)
return -1;
if (rec2->category == NULL && rec->category != NULL)
return 1;
if (rec->category != NULL && rec2->category != NULL) {
i = strcmp(rec->category, rec2->category);
if (i != 0)
return i;
}
return strcmp(rec->cmd, rec2->cmd);
}
static int get_cmd_length(void *data)
{
return strlen(((COMMAND_REC *) data)->cmd);
}
static void help_category(GSList *cmdlist, int items)
{
WINDOW_REC *window;
TEXT_DEST_REC dest;
GString *str;
GSList *tmp;
int *columns, cols, rows, col, row, last_col_rows, max_width;
char *linebuf, *format, *stripped;
window = window_find_closest(NULL, NULL, MSGLEVEL_CLIENTCRAP);
max_width = window->width;
/* remove width of timestamp from max_width */
format_create_dest(&dest, NULL, NULL, MSGLEVEL_CLIENTCRAP, NULL);
format = format_get_line_start(current_theme, &dest, time(NULL));
if (format != NULL) {
stripped = strip_codes(format);
max_width -= strlen(stripped);
g_free(stripped);
g_free(format);
}
/* calculate columns */
cols = get_max_column_count(cmdlist, get_cmd_length,
max_width, 6, 1, 3, &columns, &rows);
cmdlist = columns_sort_list(cmdlist, rows);
/* rows in last column */
last_col_rows = rows-(cols*rows-g_slist_length(cmdlist));
if (last_col_rows == 0)
last_col_rows = rows;
str = g_string_new(NULL);
linebuf = g_malloc(max_width+1);
col = 0; row = 0;
for (tmp = cmdlist; tmp != NULL; tmp = tmp->next) {
COMMAND_REC *rec = tmp->data;
memset(linebuf, ' ', columns[col]);
linebuf[columns[col]] = '\0';
memcpy(linebuf, rec->cmd, strlen(rec->cmd));
g_string_append(str, linebuf);
if (++col == cols) {
printtext(NULL, NULL,
MSGLEVEL_CLIENTCRAP, "%s", str->str);
g_string_truncate(str, 0);
col = 0; row++;
if (row == last_col_rows)
cols--;
}
}
if (str->len != 0)
printtext(NULL, NULL, MSGLEVEL_CLIENTCRAP, "%s", str->str);
g_slist_free(cmdlist);
g_string_free(str, TRUE);
g_free(columns);
g_free(linebuf);
}
static int show_help_file(const char *file)
{
const char *helppath;
char tmpbuf[1024], *str, *path, **paths, **tmp;
LINEBUF_REC *buffer = NULL;
int f, ret, recvlen;
helppath = settings_get_str("help_path");
paths = g_strsplit(helppath, ":", -1);
f = -1;
for (tmp = paths; *tmp != NULL; tmp++) {
/* helpdir/command or helpdir/category/command */
path = g_strdup_printf("%s/%s", *tmp, file);
f = open(path, O_RDONLY);
g_free(path);
if (f != -1)
break;
}
g_strfreev(paths);
if (f == -1)
return FALSE;
/* just print to screen whatever is in the file */
do {
recvlen = read(f, tmpbuf, sizeof(tmpbuf));
ret = line_split(tmpbuf, recvlen, &str, &buffer);
if (ret > 0) {
str = g_strconcat("%|", str, NULL);
printtext_string(NULL, NULL, MSGLEVEL_CLIENTCRAP, str);
g_free(str);
}
}
while (ret > 0);
line_split_free(buffer);
close(f);
return TRUE;
}
static void show_help(const char *data)
{
COMMAND_REC *rec, *last;
GSList *tmp, *cmdlist;
int items, findlen;
int header, found, fullmatch;
g_return_if_fail(data != NULL);
/* sort the commands list */
commands = g_slist_sort(commands, (GCompareFunc) commands_equal);
/* print command, sort by category */
cmdlist = NULL; last = NULL; header = FALSE; fullmatch = FALSE;
items = 0; findlen = strlen(data); found = FALSE;
for (tmp = commands; tmp != NULL; last = rec, tmp = tmp->next) {
rec = tmp->data;
if (last != NULL && rec->category != NULL &&
(last->category == NULL ||
strcmp(rec->category, last->category) != 0)) {
/* category changed */
if (items > 0) {
if (!header) {
printtext(NULL, NULL, MSGLEVEL_CLIENTCRAP, "Irssi commands:");
header = TRUE;
}
if (last->category != NULL) {
printtext(NULL, NULL, MSGLEVEL_CLIENTCRAP, "");
printtext(NULL, NULL, MSGLEVEL_CLIENTCRAP, "%s:", last->category);
}
help_category(cmdlist, items);
}
g_slist_free(cmdlist); cmdlist = NULL;
items = 0;
}
if (last != NULL && g_strcasecmp(rec->cmd, last->cmd) == 0)
continue; /* don't display same command twice */
if ((int)strlen(rec->cmd) >= findlen &&
g_strncasecmp(rec->cmd, data, findlen) == 0) {
if (rec->cmd[findlen] == '\0') {
fullmatch = TRUE;
found = TRUE;
break;
}
else if (strchr(rec->cmd+findlen+1, ' ') == NULL) {
/* not a subcommand (and matches the query) */
items++;
cmdlist = g_slist_append(cmdlist, rec);
found = TRUE;
}
}
}
if ((!found || fullmatch) && !show_help_file(data)) {
printtext(NULL, NULL, MSGLEVEL_CLIENTCRAP,
"No help for %s", data);
}
if (*data != '\0' && data[strlen(data)-1] != ' ' &&
command_have_sub(data)) {
char *cmd;
cmd = g_strconcat(data, " ", NULL);
show_help(cmd);
g_free(cmd);
}
if (items != 0) {
/* display the last category */
if (!header) {
printtext(NULL, NULL, MSGLEVEL_CLIENTCRAP,
"Irssi commands:");
header = TRUE;
}
if (last->category != NULL) {
printtext(NULL, NULL, MSGLEVEL_CLIENTCRAP, "");
printtext(NULL, NULL, MSGLEVEL_CLIENTCRAP,
"%s:", last->category);
}
help_category(cmdlist, items);
g_slist_free(cmdlist);
}
}
/* SYNTAX: HELP [<command>] */
static void cmd_help(const char *data)
{
char *cmd, *ptr;
cmd = g_strdup(data);
ptr = cmd+strlen(cmd);
while (ptr[-1] == ' ') ptr--; *ptr = '\0';
g_strdown(cmd);
show_help(cmd);
g_free(cmd);
}
void fe_help_init(void)
{
settings_add_str("misc", "help_path", HELPDIR);
command_bind("help", NULL, (SIGNAL_FUNC) cmd_help);
}
void fe_help_deinit(void)
{
command_unbind("help", (SIGNAL_FUNC) cmd_help);
}
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