tmux/cmd-list-keys.c

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/* $OpenBSD$ */
/*
* 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 *);
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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 = { "1aNP:T:", 0, 1 },
.usage = "[-1aN] [-P prefix-string] [-T key-table] [key]",
.flags = CMD_STARTSERVER|CMD_AFTERHOOK,
.exec = cmd_list_keys_exec
};
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const struct cmd_entry cmd_list_commands_entry = {
.name = "list-commands",
.alias = "lscm",
.args = { "F:", 0, 1 },
.usage = "[-F format] [command]",
.flags = CMD_STARTSERVER|CMD_AFTERHOOK,
.exec = cmd_list_keys_exec
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};
static u_int
cmd_list_keys_get_width(const char *tablename, key_code only)
{
struct key_table *table;
struct key_binding *bd;
u_int width, keywidth = 0;
table = key_bindings_get_table(tablename, 0);
if (table == NULL)
return (0);
bd = key_bindings_first(table);
while (bd != NULL) {
if ((only != KEYC_UNKNOWN && bd->key != only) ||
KEYC_IS_MOUSE(bd->key) ||
bd->note == NULL ||
*bd->note == '\0') {
bd = key_bindings_next(table, bd);
continue;
}
width = utf8_cstrwidth(key_string_lookup_key(bd->key, 0));
if (width > keywidth)
keywidth = width;
bd = key_bindings_next(table, bd);
}
return (keywidth);
}
static int
cmd_list_keys_print_notes(struct cmdq_item *item, struct args *args,
const char *tablename, u_int keywidth, key_code only, const char *prefix)
{
struct client *tc = cmdq_get_target_client(item);
struct key_table *table;
struct key_binding *bd;
const char *key;
char *tmp, *note;
int found = 0;
table = key_bindings_get_table(tablename, 0);
if (table == NULL)
return (0);
bd = key_bindings_first(table);
while (bd != NULL) {
if ((only != KEYC_UNKNOWN && bd->key != only) ||
KEYC_IS_MOUSE(bd->key) ||
((bd->note == NULL || *bd->note == '\0') &&
!args_has(args, 'a'))) {
bd = key_bindings_next(table, bd);
continue;
}
found = 1;
key = key_string_lookup_key(bd->key, 0);
if (bd->note == NULL || *bd->note == '\0')
note = cmd_list_print(bd->cmdlist, 1);
else
note = xstrdup(bd->note);
tmp = utf8_padcstr(key, keywidth + 1);
if (args_has(args, '1') && tc != NULL)
status_message_set(tc, 1, "%s%s%s", prefix, tmp, note);
else
cmdq_print(item, "%s%s%s", prefix, tmp, note);
free(tmp);
free(note);
if (args_has(args, '1'))
break;
bd = key_bindings_next(table, bd);
}
return (found);
}
static char *
cmd_list_keys_get_prefix(struct args *args, key_code *prefix)
{
char *s;
*prefix = options_get_number(global_s_options, "prefix");
if (!args_has(args, 'P')) {
if (*prefix != KEYC_NONE)
xasprintf(&s, "%s ", key_string_lookup_key(*prefix, 0));
else
s = xstrdup("");
} else
s = xstrdup(args_get(args, 'P'));
return (s);
}
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static enum cmd_retval
cmd_list_keys_exec(struct cmd *self, struct cmdq_item *item)
{
struct args *args = cmd_get_args(self);
struct key_table *table;
struct key_binding *bd;
const char *tablename, *r;
char *key, *cp, *tmp, *start, *empty;
key_code prefix, only = KEYC_UNKNOWN;
int repeat, width, tablewidth, keywidth, found = 0;
size_t tmpsize, tmpused, cplen;
if (cmd_get_entry(self) == &cmd_list_commands_entry)
return (cmd_list_keys_commands(self, item));
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if (args->argc != 0) {
only = key_string_lookup_string(args->argv[0]);
if (only == KEYC_UNKNOWN) {
cmdq_error(item, "invalid key: %s", args->argv[0]);
return (CMD_RETURN_ERROR);
}
}
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);
}
if (args_has(args, 'N')) {
if (tablename == NULL) {
start = cmd_list_keys_get_prefix(args, &prefix);
keywidth = cmd_list_keys_get_width("root", only);
if (prefix != KEYC_NONE) {
width = cmd_list_keys_get_width("prefix", only);
if (width == 0)
prefix = KEYC_NONE;
else if (width > keywidth)
keywidth = width;
}
empty = utf8_padcstr("", utf8_cstrwidth(start));
found = cmd_list_keys_print_notes(item, args, "root",
keywidth, only, empty);
if (prefix != KEYC_NONE) {
if (cmd_list_keys_print_notes(item, args,
"prefix", keywidth, only, start))
found = 1;
}
free(empty);
} else {
if (args_has(args, 'P'))
start = xstrdup(args_get(args, 'P'));
else
start = xstrdup("");
keywidth = cmd_list_keys_get_width(tablename, only);
found = cmd_list_keys_print_notes(item, args, tablename,
keywidth, only, start);
}
free(start);
goto out;
}
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) {
if (only != KEYC_UNKNOWN && bd->key != only) {
bd = key_bindings_next(table, bd);
continue;
}
key = args_escape(key_string_lookup_key(bd->key, 0));
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);
}
tmpsize = 256;
tmp = xmalloc(tmpsize);
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) {
if (only != KEYC_UNKNOWN && bd->key != only) {
bd = key_bindings_next(table, bd);
continue;
}
found = 1;
key = args_escape(key_string_lookup_key(bd->key, 0));
if (!repeat)
r = "";
else if (bd->flags & KEY_BINDING_REPEAT)
r = "-r ";
else
r = " ";
tmpused = xsnprintf(tmp, tmpsize, "%s-T ", r);
cp = utf8_padcstr(table->name, tablewidth);
cplen = strlen(cp) + 1;
while (tmpused + cplen + 1 >= tmpsize) {
tmpsize *= 2;
tmp = xrealloc(tmp, tmpsize);
}
strlcat(tmp, cp, tmpsize);
tmpused = strlcat(tmp, " ", tmpsize);
free(cp);
cp = utf8_padcstr(key, keywidth);
cplen = strlen(cp) + 1;
while (tmpused + cplen + 1 >= tmpsize) {
tmpsize *= 2;
tmp = xrealloc(tmp, tmpsize);
}
strlcat(tmp, cp, tmpsize);
tmpused = strlcat(tmp, " ", tmpsize);
free(cp);
cp = cmd_list_print(bd->cmdlist, 1);
cplen = strlen(cp);
while (tmpused + cplen + 1 >= tmpsize) {
tmpsize *= 2;
tmp = xrealloc(tmp, tmpsize);
}
strlcat(tmp, cp, tmpsize);
free(cp);
cmdq_print(item, "bind-key %s", tmp);
free(key);
bd = key_bindings_next(table, bd);
}
table = key_bindings_next_table(table);
}
free(tmp);
out:
if (only != KEYC_UNKNOWN && !found) {
cmdq_error(item, "unknown key: %s", args->argv[0]);
return (CMD_RETURN_ERROR);
}
return (CMD_RETURN_NORMAL);
}
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static enum cmd_retval
cmd_list_keys_commands(struct cmd *self, struct cmdq_item *item)
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{
struct args *args = cmd_get_args(self);
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const struct cmd_entry **entryp;
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const struct cmd_entry *entry;
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struct format_tree *ft;
const char *template, *s, *command = NULL;
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char *line;
if (args->argc != 0)
command = args->argv[0];
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if ((template = args_get(args, 'F')) == NULL) {
template = "#{command_list_name}"
"#{?command_list_alias, (#{command_list_alias}),} "
"#{command_list_usage}";
}
ft = format_create(cmdq_get_client(item), item, FORMAT_NONE, 0);
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format_defaults(ft, NULL, NULL, NULL, NULL);
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for (entryp = cmd_table; *entryp != NULL; entryp++) {
entry = *entryp;
if (command != NULL &&
(strcmp(entry->name, command) != 0 &&
(entry->alias == NULL ||
strcmp(entry->alias, command) != 0)))
continue;
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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);
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line = format_expand(ft, template);
if (*line != '\0')
cmdq_print(item, "%s", line);
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free(line);
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}
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format_free(ft);
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return (CMD_RETURN_NORMAL);
}