tmux/cmd-list-keys.c
nicm f4c7141f5d Do not lazily use BUFSIZ for "I don't care what size" when building
strings because it is only guaranteed to be 256 bytes and even the
default 1024 is not always enough. Reported by Gregory Pakosz.
2019-10-03 10:24:05 +00:00

190 lines
4.7 KiB
C

/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* List key bindings.
*/
static enum cmd_retval cmd_list_keys_exec(struct cmd *, struct cmdq_item *);
static enum cmd_retval cmd_list_keys_commands(struct cmd *,
struct cmdq_item *);
const struct cmd_entry cmd_list_keys_entry = {
.name = "list-keys",
.alias = "lsk",
.args = { "T:", 0, 0 },
.usage = "[-T key-table]",
.flags = CMD_STARTSERVER|CMD_AFTERHOOK,
.exec = cmd_list_keys_exec
};
const struct cmd_entry cmd_list_commands_entry = {
.name = "list-commands",
.alias = "lscm",
.args = { "F:", 0, 0 },
.usage = "[-F format]",
.flags = CMD_STARTSERVER|CMD_AFTERHOOK,
.exec = cmd_list_keys_exec
};
static enum cmd_retval
cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = self->args;
struct key_table *table;
struct key_binding *bd;
const char *tablename, *r;
char *key, *cp, tmp[8192];
int repeat, width, tablewidth, keywidth;
if (self->entry == &cmd_list_commands_entry)
return (cmd_list_keys_commands(self, item));
tablename = args_get(args, 'T');
if (tablename != NULL && key_bindings_get_table(tablename, 0) == NULL) {
cmdq_error(item, "table %s doesn't exist", tablename);
return (CMD_RETURN_ERROR);
}
repeat = 0;
tablewidth = keywidth = 0;
table = key_bindings_first_table ();
while (table != NULL) {
if (tablename != NULL && strcmp(table->name, tablename) != 0) {
table = key_bindings_next_table(table);
continue;
}
bd = key_bindings_first(table);
while (bd != NULL) {
key = args_escape(key_string_lookup_key(bd->key));
if (bd->flags & KEY_BINDING_REPEAT)
repeat = 1;
width = utf8_cstrwidth(table->name);
if (width > tablewidth)
tablewidth = width;
width = utf8_cstrwidth(key);
if (width > keywidth)
keywidth = width;
free(key);
bd = key_bindings_next(table, bd);
}
table = key_bindings_next_table(table);
}
table = key_bindings_first_table ();
while (table != NULL) {
if (tablename != NULL && strcmp(table->name, tablename) != 0) {
table = key_bindings_next_table(table);
continue;
}
bd = key_bindings_first(table);
while (bd != NULL) {
key = args_escape(key_string_lookup_key(bd->key));
if (!repeat)
r = "";
else if (bd->flags & KEY_BINDING_REPEAT)
r = "-r ";
else
r = " ";
xsnprintf(tmp, sizeof tmp, "%s-T ", r);
cp = utf8_padcstr(table->name, tablewidth);
strlcat(tmp, cp, sizeof tmp);
strlcat(tmp, " ", sizeof tmp);
free(cp);
cp = utf8_padcstr(key, keywidth);
strlcat(tmp, cp, sizeof tmp);
strlcat(tmp, " ", sizeof tmp);
free(cp);
cp = cmd_list_print(bd->cmdlist, 1);
strlcat(tmp, cp, sizeof tmp);
free(cp);
cmdq_print(item, "bind-key %s", tmp);
free(key);
bd = key_bindings_next(table, bd);
}
table = key_bindings_next_table(table);
}
return (CMD_RETURN_NORMAL);
}
static enum cmd_retval
cmd_list_keys_commands(struct cmd *self, struct cmdq_item *item)
{
struct args *args = self->args;
const struct cmd_entry **entryp;
const struct cmd_entry *entry;
struct format_tree *ft;
const char *template, *s;
char *line;
if ((template = args_get(args, 'F')) == NULL) {
template = "#{command_list_name}"
"#{?command_list_alias, (#{command_list_alias}),} "
"#{command_list_usage}";
}
ft = format_create(item->client, item, FORMAT_NONE, 0);
format_defaults(ft, NULL, NULL, NULL, NULL);
for (entryp = cmd_table; *entryp != NULL; entryp++) {
entry = *entryp;
format_add(ft, "command_list_name", "%s", entry->name);
if (entry->alias != NULL)
s = entry->alias;
else
s = "";
format_add(ft, "command_list_alias", "%s", s);
if (entry->usage != NULL)
s = entry->usage;
else
s = "";
format_add(ft, "command_list_usage", "%s", s);
line = format_expand(ft, template);
if (*line != '\0')
cmdq_print(item, "%s", line);
free(line);
}
format_free(ft);
return (CMD_RETURN_NORMAL);
}