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Up to [local] / src / usr.bin / tmux

Move lazy resize from the pane to the window, there is no point in
resizing the window unless it is the current window, and if we do and
don't resize the pane until later there are problems if the size changes
from A to B then back to A.

/* $OpenBSD: cmd-set-option.c,v 1.136 2020/05/16 16:50:55 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"

/*
 * Set an option.
 */

static enum cmd_retval	cmd_set_option_exec(struct cmd *, struct cmdq_item *);

const struct cmd_entry cmd_set_option_entry = {
	.name = "set-option",
	.alias = "set",

	.args = { "aFgopqst:uw", 1, 2 },
	.usage = "[-aFgopqsuw] " CMD_TARGET_PANE_USAGE " option [value]",

	.target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },

	.flags = CMD_AFTERHOOK,
	.exec = cmd_set_option_exec
};

const struct cmd_entry cmd_set_window_option_entry = {
	.name = "set-window-option",
	.alias = "setw",

	.args = { "aFgoqt:u", 1, 2 },
	.usage = "[-aFgoqu] " CMD_TARGET_WINDOW_USAGE " option [value]",

	.target = { 't', CMD_FIND_WINDOW, CMD_FIND_CANFAIL },

	.flags = CMD_AFTERHOOK,
	.exec = cmd_set_option_exec
};

const struct cmd_entry cmd_set_hook_entry = {
	.name = "set-hook",
	.alias = NULL,

	.args = { "agpRt:uw", 1, 2 },
	.usage = "[-agpRuw] " CMD_TARGET_PANE_USAGE " hook [command]",

	.target = { 't', CMD_FIND_PANE, CMD_FIND_CANFAIL },

	.flags = CMD_AFTERHOOK,
	.exec = cmd_set_option_exec
};

static enum cmd_retval
cmd_set_option_exec(struct cmd *self, struct cmdq_item *item)
{
	struct args			*args = cmd_get_args(self);
	int				 append = args_has(args, 'a');
	struct cmd_find_state		*target = cmdq_get_target(item);
	struct options			*oo;
	struct options_entry		*parent, *o;
	char				*name, *argument, *value = NULL, *cause;
	int				 window, idx, already, error, ambiguous;
	int				 scope;

	window = (cmd_get_entry(self) == &cmd_set_window_option_entry);

	/* Expand argument. */
	argument = format_single_from_target(item, args->argv[0]);

	/* If set-hook -R, fire the hook straight away. */
	if (cmd_get_entry(self) == &cmd_set_hook_entry && args_has(args, 'R')) {
		notify_hook(item, argument);
		free(argument);
		return (CMD_RETURN_NORMAL);
	}

	/* Parse option name and index. */
	name = options_match(argument, &idx, &ambiguous);
	if (name == NULL) {
		if (args_has(args, 'q'))
			goto out;
		if (ambiguous)
			cmdq_error(item, "ambiguous option: %s", argument);
		else
			cmdq_error(item, "invalid option: %s", argument);
		goto fail;
	}
	if (args->argc < 2)
		value = NULL;
	else if (args_has(args, 'F'))
		value = format_single_from_target(item, args->argv[1]);
	else
		value = xstrdup(args->argv[1]);

	/* Get the scope and table for the option .*/
	scope = options_scope_from_name(args, window, name, target, &oo,
	    &cause);
	if (scope == OPTIONS_TABLE_NONE) {
		if (args_has(args, 'q'))
			goto out;
		cmdq_error(item, "%s", cause);
		free(cause);
		goto fail;
	}
	o = options_get_only(oo, name);
	parent = options_get(oo, name);

	/* Check that array options and indexes match up. */
	if (idx != -1 && (*name == '@' || !options_is_array(parent))) {
		cmdq_error(item, "not an array: %s", argument);
		goto fail;
	}

	/* With -o, check this option is not already set. */
	if (!args_has(args, 'u') && args_has(args, 'o')) {
		if (idx == -1)
			already = (o != NULL);
		else {
			if (o == NULL)
				already = 0;
			else
				already = (options_array_get(o, idx) != NULL);
		}
		if (already) {
			if (args_has(args, 'q'))
				goto out;
			cmdq_error(item, "already set: %s", argument);
			goto fail;
		}
	}

	/* Change the option. */
	if (args_has(args, 'u')) {
		if (o == NULL)
			goto out;
		if (idx == -1) {
			if (*name == '@')
				options_remove(o);
			else if (oo == global_options ||
			    oo == global_s_options ||
			    oo == global_w_options)
				options_default(oo, options_table_entry(o));
			else
				options_remove(o);
		} else if (options_array_set(o, idx, NULL, 0, &cause) != 0) {
			cmdq_error(item, "%s", cause);
			free(cause);
			goto fail;
		}
	} else if (*name == '@') {
		if (value == NULL) {
			cmdq_error(item, "empty value");
			goto fail;
		}
		options_set_string(oo, name, append, "%s", value);
	} else if (idx == -1 && !options_is_array(parent)) {
		error = options_from_string(oo, options_table_entry(parent),
		    options_table_entry(parent)->name, value,
		    args_has(args, 'a'), &cause);
		if (error != 0) {
			cmdq_error(item, "%s", cause);
			free(cause);
			goto fail;
		}
	} else {
		if (value == NULL) {
			cmdq_error(item, "empty value");
			goto fail;
		}
		if (o == NULL)
			o = options_empty(oo, options_table_entry(parent));
		if (idx == -1) {
			if (!append)
				options_array_clear(o);
			if (options_array_assign(o, value, &cause) != 0) {
				cmdq_error(item, "%s", cause);
				free(cause);
				goto fail;
			}
		} else if (options_array_set(o, idx, value, append,
		    &cause) != 0) {
			cmdq_error(item, "%s", cause);
			free(cause);
			goto fail;
		}
	}

	options_push_changes(name);

out:
	free(argument);
	free(value);
	free(name);
	return (CMD_RETURN_NORMAL);

fail:
	free(argument);
	free(value);
	free(name);
	return (CMD_RETURN_ERROR);
}