Return to control.c CVS log

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

When adding a list of commands to the queue, instead of automatically
creating a new state for each group of commands, require the caller to
create one and use it for all the commands in the list. This means the
current target works even with list with multiple groups (which can
happen if they are defined with newlines).

/* $OpenBSD: control.c,v 1.29 2020/04/13 15:55:51 nicm Exp $ */

/*
 * Copyright (c) 2012 Nicholas Marriott <nicholas.marriott@gmail.com>
 * Copyright (c) 2012 George Nachman <tmux@georgester.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 <event.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>

#include "tmux.h"

/* Write a line. */
void
control_write(struct client *c, const char *fmt, ...)
{
	va_list	ap;

	va_start(ap, fmt);
	file_vprint(c, fmt, ap);
	file_print(c, "\n");
	va_end(ap);
}

/* Control error callback. */
static enum cmd_retval
control_error(struct cmdq_item *item, void *data)
{
	struct client	*c = cmdq_get_client(item);
	char		*error = data;

	cmdq_guard(item, "begin", 1);
	control_write(c, "parse error: %s", error);
	cmdq_guard(item, "error", 1);

	free(error);
	return (CMD_RETURN_NORMAL);
}

/* Control input callback. Read lines and fire commands. */
static void
control_callback(__unused struct client *c, __unused const char *path,
    int error, int closed, struct evbuffer *buffer, __unused void *data)
{
	char			*line;
	struct cmdq_item	*item;
	struct cmdq_state	*state;
	struct cmd_parse_result	*pr;

	if (closed || error != 0)
		c->flags |= CLIENT_EXIT;

	for (;;) {
		line = evbuffer_readln(buffer, NULL, EVBUFFER_EOL_LF);
		if (line == NULL)
			break;
		log_debug("%s: %s", __func__, line);
		if (*line == '\0') { /* empty line exit */
			free(line);
			c->flags |= CLIENT_EXIT;
			break;
		}

		pr = cmd_parse_from_string(line, NULL);
		switch (pr->status) {
		case CMD_PARSE_EMPTY:
			break;
		case CMD_PARSE_ERROR:
			item = cmdq_get_callback(control_error, pr->error);
			cmdq_append(c, item);
			break;
		case CMD_PARSE_SUCCESS:
			state = cmdq_new_state(NULL, NULL, CMDQ_STATE_CONTROL);
			item = cmdq_get_command(pr->cmdlist, state);
			cmdq_append(c, item);
			cmdq_free_state(state);
			cmd_list_free(pr->cmdlist);
			break;
		}

		free(line);
	}
}

void
control_start(struct client *c)
{
	file_read(c, "-", control_callback, c);

	if (c->flags & CLIENT_CONTROLCONTROL)
		file_print(c, "\033P1000p");
}