Return to cmd-set-option.c CVS log

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

Major tidy up and rework of options tree and set-option/show-options
commands this pushes more of the code into options.c and ties it more
closely to the options table rather than having an unnecessary
split. Also add support for array options (will be used later). Only
(intentional) user visible change is that show-options output is now
passed through vis(3) with VIS_DQ so quotes are escaped.

/* $OpenBSD: cmd-set-option.c,v 1.105 2017/01/15 20:48:41 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 *);

static int	cmd_set_option_set(struct cmd *, struct cmdq_item *,
		    struct options *, struct option *, const char *);
static int	cmd_set_option_flag(struct cmdq_item *,
		    const struct options_table_entry *, struct options *,
		    const char *);
static int	cmd_set_option_choice(struct cmdq_item *,
		    const struct options_table_entry *, struct options *,
		    const char *);

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

	.args = { "agoqst:uw", 1, 2 },
	.usage = "[-agosquw] [-t target-window] option [value]",

	.tflag = CMD_WINDOW_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 = { "agoqt:u", 1, 2 },
	.usage = "[-agoqu] " CMD_TARGET_WINDOW_USAGE " option [value]",

	.tflag = CMD_WINDOW_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 = self->args;
	struct cmd_find_state		*fs = &item->state.tflag;
	struct session			*s = fs->s;
	struct winlink			*wl = fs->wl;
	struct window			*w = wl->window;
	struct client			*c;
	enum options_table_scope	 scope;
	struct options			*oo;
	struct option			*parent, *o;
	const char			*name, *value, *target;
	int				 window, idx, already, error, ambiguous;
	char				*cause;

	/* Parse option name and index. */
	name = options_match(args->argv[0], &idx, &ambiguous);
	if (name == NULL) {
		if (ambiguous)
			cmdq_error(item, "ambiguous option: %s", args->argv[0]);
		else
			cmdq_error(item, "invalid option: %s", args->argv[0]);
		return (CMD_RETURN_ERROR);
	}
	if (args->argc < 2)
		value = NULL;
	else
		value = args->argv[1];

	/*
	 * Figure out the scope: for user options it comes from the arguments,
	 * otherwise from the option name.
	 */
	if (*name == '@') {
		window = (self->entry == &cmd_set_window_option_entry);
		scope = options_scope_from_flags(args, window, fs, &oo, &cause);
	} else {
		if (options_get_only(global_options, name) != NULL)
			scope = OPTIONS_TABLE_SERVER;
		else if (options_get_only(global_s_options, name) != NULL)
			scope = OPTIONS_TABLE_SESSION;
		else if (options_get_only(global_w_options, name) != NULL)
			scope = OPTIONS_TABLE_WINDOW;
		else {
			scope = OPTIONS_TABLE_NONE;
			xasprintf(&cause, "unknown option: %s", args->argv[0]);
		}
	}
	if (scope == OPTIONS_TABLE_NONE) {
		cmdq_error(item, "%s", cause);
		free(cause);
		return (CMD_RETURN_ERROR);
	}

	/* Which table should this option go into? */
	if (scope == OPTIONS_TABLE_SERVER)
		oo = global_options;
	else if (scope == OPTIONS_TABLE_SESSION) {
		if (args_has(self->args, 'g'))
			oo = global_s_options;
		else if (s == NULL) {
			target = args_get(args, 't');
			if (target != NULL)
				cmdq_error(item, "no such session: %s", target);
			else
				cmdq_error(item, "no current session");
			return (CMD_RETURN_ERROR);
		} else
			oo = s->options;
	} else if (scope == OPTIONS_TABLE_WINDOW) {
		if (args_has(self->args, 'g'))
			oo = global_w_options;
		else if (wl == NULL) {
			target = args_get(args, 't');
			if (target != NULL)
				cmdq_error(item, "no such window: %s", target);
			else
				cmdq_error(item, "no current window");
			return (CMD_RETURN_ERROR);
		} else
			oo = wl->window->options;
	}
	o = options_get_only(oo, name);
	parent = options_get(oo, name);

	/* Check that array options and indexes match up. */
	if (idx != -1) {
		if (*name == '@' || options_array_size(parent, NULL) == -1) {
			cmdq_error(item, "not an array: %s", args->argv[0]);
			return (CMD_RETURN_ERROR);
		}
	} else {
		if (*name != '@' && options_array_size(parent, NULL) != -1) {
			cmdq_error(item, "is an array: %s", args->argv[0]);
			return (CMD_RETURN_ERROR);
		}
	}

	/* 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'))
				return (CMD_RETURN_NORMAL);
			cmdq_error(item, "already set: %s", args->argv[0]);
			return (CMD_RETURN_ERROR);
		}
	}

	/* Change the option. */
	if (args_has(args, 'u')) {
		if (o == NULL)
			return (CMD_RETURN_NORMAL);
		if (idx == -1) {
			if (oo == global_options ||
			    oo == global_s_options ||
			    oo == global_w_options)
				options_default(oo, options_table_entry(o));
			else
				options_remove(o);
		} else
			options_array_set(o, idx, NULL);
	} else if (*name == '@')
		options_set_string(oo, name, args_has(args, 'a'), "%s", value);
	else if (idx == -1) {
		error = cmd_set_option_set(self, item, oo, parent, value);
		if (error != 0)
			return (CMD_RETURN_ERROR);
	} else {
		if (o == NULL)
			o = options_empty(oo, options_table_entry(parent));
		if (options_array_set(o, idx, value) != 0) {
			cmdq_error(item, "invalid index: %s", args->argv[0]);
			return (CMD_RETURN_ERROR);
		}
	}

	/* Update timers and so on for various options. */
	if (strcmp(name, "automatic-rename") == 0) {
		RB_FOREACH(w, windows, &windows) {
			if (w->active == NULL)
				continue;
			if (options_get_number(w->options, "automatic-rename"))
				w->active->flags |= PANE_CHANGED;
		}
	}
	if (strcmp(name, "key-table") == 0) {
		TAILQ_FOREACH(c, &clients, entry)
			server_client_set_key_table(c, NULL);
	}
	if (strcmp(name, "status") == 0 ||
	    strcmp(name, "status-interval") == 0)
		status_timer_start_all();
	if (strcmp(name, "monitor-silence") == 0)
		alerts_reset_all();
	if (strcmp(name, "window-style") == 0 ||
	    strcmp(name, "window-active-style") == 0) {
		RB_FOREACH(w, windows, &windows)
			w->flags |= WINDOW_STYLECHANGED;
	}
	if (strcmp(name, "pane-border-status") == 0) {
		RB_FOREACH(w, windows, &windows)
			layout_fix_panes(w, w->sx, w->sy);
	}

	/*
	 * Update sizes and redraw. May not always be necessary but do it
	 * anyway.
	 */
	recalculate_sizes();
	TAILQ_FOREACH(c, &clients, entry) {
		if (c->session != NULL)
			server_redraw_client(c);
	}

	return (CMD_RETURN_NORMAL);
}

static int
cmd_set_option_set(struct cmd *self, struct cmdq_item *item, struct options *oo,
    struct option *parent, const char *value)
{
	const struct options_table_entry	*oe;
	struct args				*args = self->args;
	int					 append = args_has(args, 'a');
	struct option				*o;
	long long				 number;
	const char				*errstr;
	key_code				 key;

	oe = options_table_entry(parent);
	if (value == NULL &&
	    oe->type != OPTIONS_TABLE_FLAG &&
	    oe->type != OPTIONS_TABLE_CHOICE) {
		cmdq_error(item, "empty value");
		return (-1);
	}

	switch (oe->type) {
	case OPTIONS_TABLE_STRING:
		options_set_string(oo, oe->name, append, "%s", value);
		return (0);
	case OPTIONS_TABLE_NUMBER:
		number = strtonum(value, oe->minimum, oe->maximum, &errstr);
		if (errstr != NULL) {
			cmdq_error(item, "value is %s: %s", errstr, value);
			return (-1);
		}
		options_set_number(oo, oe->name, number);
		return (0);
	case OPTIONS_TABLE_KEY:
		key = key_string_lookup_string(value);
		if (key == KEYC_UNKNOWN) {
			cmdq_error(item, "bad key: %s", value);
			return (-1);
		}
		options_set_number(oo, oe->name, key);
		return (0);
	case OPTIONS_TABLE_COLOUR:
		if ((number = colour_fromstring(value)) == -1) {
			cmdq_error(item, "bad colour: %s", value);
			return (-1);
		}
		o = options_set_number(oo, oe->name, number);
		options_style_update_new(oo, o);
		return (0);
	case OPTIONS_TABLE_ATTRIBUTES:
		if ((number = attributes_fromstring(value)) == -1) {
			cmdq_error(item, "bad attributes: %s", value);
			return (-1);
		}
		o = options_set_number(oo, oe->name, number);
		options_style_update_new(oo, o);
		return (0);
	case OPTIONS_TABLE_FLAG:
		return (cmd_set_option_flag(item, oe, oo, value));
	case OPTIONS_TABLE_CHOICE:
		return (cmd_set_option_choice(item, oe, oo, value));
	case OPTIONS_TABLE_STYLE:
		o = options_set_style(oo, oe->name, append, value);
		if (o == NULL) {
			cmdq_error(item, "bad style: %s", value);
			return (-1);
		}
		options_style_update_old(oo, o);
		return (0);
	case OPTIONS_TABLE_ARRAY:
		break;
	}
	return (-1);
}

static int
cmd_set_option_flag(struct cmdq_item *item,
    const struct options_table_entry *oe, struct options *oo,
    const char *value)
{
	int	flag;

	if (value == NULL || *value == '\0')
		flag = !options_get_number(oo, oe->name);
	else if (strcmp(value, "1") == 0 ||
	    strcasecmp(value, "on") == 0 ||
	    strcasecmp(value, "yes") == 0)
		flag = 1;
	else if (strcmp(value, "0") == 0 ||
	    strcasecmp(value, "off") == 0 ||
	    strcasecmp(value, "no") == 0)
		flag = 0;
	else {
		cmdq_error(item, "bad value: %s", value);
		return (-1);
	}
	options_set_number(oo, oe->name, flag);
	return (0);
}

static int
cmd_set_option_choice(struct cmdq_item *item,
    const struct options_table_entry *oe, struct options *oo,
    const char *value)
{
	const char	**cp;
	int		  n, choice = -1;

	if (value == NULL) {
		choice = options_get_number(oo, oe->name);
		if (choice < 2)
			choice = !choice;
	} else {
		n = 0;
		for (cp = oe->choices; *cp != NULL; cp++) {
			if (strcmp(*cp, value) == 0)
				choice = n;
			n++;
		}
		if (choice == -1) {
			cmdq_error(item, "unknown value: %s", value);
			return (-1);
		}
	}
	options_set_number(oo, oe->name, choice);
	return (0);
}