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Add a window or pane id "tag" to each format tree and use it to separate
jobs, this means that if the same job is used for different windows or
panes (for example in pane-border-format), it will be run separately for
each pane.

/* $OpenBSD: cmd-list-keys.c,v 1.42 2017/02/03 11:57:27 nicm Exp $ */

/*
 * 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		*key, *tablename, *r;
	char			*cp, tmp[BUFSIZ];
	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;
	RB_FOREACH(table, key_tables, &key_tables) {
		if (tablename != NULL && strcmp(table->name, tablename) != 0)
			continue;
		RB_FOREACH(bd, key_bindings, &table->key_bindings) {
			key = key_string_lookup_key(bd->key);

			if (bd->can_repeat)
				repeat = 1;

			width = utf8_cstrwidth(table->name);
			if (width > tablewidth)
				tablewidth = width;
			width = utf8_cstrwidth(key);
			if (width > keywidth)
				keywidth = width;
		}
	}

	RB_FOREACH(table, key_tables, &key_tables) {
		if (tablename != NULL && strcmp(table->name, tablename) != 0)
			continue;
		RB_FOREACH(bd, key_bindings, &table->key_bindings) {
			key = key_string_lookup_key(bd->key);

			if (!repeat)
				r = "";
			else if (bd->can_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);
			strlcat(tmp, cp, sizeof tmp);
			free(cp);

			cmdq_print(item, "bind-key %s", tmp);
		}
	}

	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, 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);
}