mirror of
https://github.com/tmux/tmux.git
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282 lines
6.1 KiB
C
282 lines
6.1 KiB
C
/* $Id$ */
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/*
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* Copyright (c) 2013 Nicholas Marriott <nicm@users.sourceforge.net>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
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* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <ctype.h>
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#include <stdlib.h>
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#include <time.h>
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#include "tmux.h"
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/* Create new command queue. */
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struct cmd_q *
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cmdq_new(struct client *c)
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{
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struct cmd_q *cmdq;
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cmdq = xcalloc(1, sizeof *cmdq);
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cmdq->references = 1;
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cmdq->dead = 0;
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cmdq->client = c;
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cmdq->client_exit = -1;
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TAILQ_INIT(&cmdq->queue);
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cmdq->item = NULL;
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cmdq->cmd = NULL;
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return (cmdq);
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}
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/* Free command queue */
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int
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cmdq_free(struct cmd_q *cmdq)
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{
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if (--cmdq->references != 0)
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return (cmdq->dead);
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cmdq_flush(cmdq);
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free(cmdq);
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return (1);
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}
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/* Show message from command. */
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void printflike2
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cmdq_print(struct cmd_q *cmdq, const char *fmt, ...)
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{
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struct client *c = cmdq->client;
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struct window *w;
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va_list ap;
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va_start(ap, fmt);
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if (c == NULL)
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/* nothing */;
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else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
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evbuffer_add_vprintf(c->stdout_data, fmt, ap);
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evbuffer_add(c->stdout_data, "\n", 1);
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server_push_stdout(c);
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} else {
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w = c->session->curw->window;
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if (w->active->mode != &window_copy_mode) {
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window_pane_reset_mode(w->active);
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window_pane_set_mode(w->active, &window_copy_mode);
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window_copy_init_for_output(w->active);
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}
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window_copy_vadd(w->active, fmt, ap);
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}
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va_end(ap);
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}
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/* Show info from command. */
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void printflike2
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cmdq_info(struct cmd_q *cmdq, const char *fmt, ...)
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{
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struct client *c = cmdq->client;
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va_list ap;
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char *msg;
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if (options_get_number(&global_options, "quiet"))
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return;
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va_start(ap, fmt);
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if (c == NULL)
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/* nothing */;
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else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
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evbuffer_add_vprintf(c->stdout_data, fmt, ap);
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evbuffer_add(c->stdout_data, "\n", 1);
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server_push_stdout(c);
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} else {
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xvasprintf(&msg, fmt, ap);
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*msg = toupper((u_char) *msg);
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status_message_set(c, "%s", msg);
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free(msg);
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}
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va_end(ap);
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}
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/* Show error from command. */
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void printflike2
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cmdq_error(struct cmd_q *cmdq, const char *fmt, ...)
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{
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struct client *c = cmdq->client;
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struct cmd *cmd = cmdq->cmd;
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va_list ap;
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char *msg, *cause;
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size_t msglen;
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va_start(ap, fmt);
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msglen = xvasprintf(&msg, fmt, ap);
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va_end(ap);
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if (c == NULL) {
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xasprintf(&cause, "%s:%u: %s", cmd->file, cmd->line, msg);
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ARRAY_ADD(&cfg_causes, cause);
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} else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
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evbuffer_add(c->stderr_data, msg, msglen);
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evbuffer_add(c->stderr_data, "\n", 1);
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server_push_stderr(c);
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c->retval = 1;
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} else {
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*msg = toupper((u_char) *msg);
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status_message_set(c, "%s", msg);
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}
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free(msg);
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}
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/* Print a guard line. */
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int
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cmdq_guard(struct cmd_q *cmdq, const char *guard, int flags)
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{
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struct client *c = cmdq->client;
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if (c == NULL)
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return 0;
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if (!(c->flags & CLIENT_CONTROL))
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return 0;
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evbuffer_add_printf(c->stdout_data, "%%%s %ld %u %d\n", guard,
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(long) cmdq->time, cmdq->number, flags);
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server_push_stdout(c);
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return 1;
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}
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/* Add command list to queue and begin processing if needed. */
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void
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cmdq_run(struct cmd_q *cmdq, struct cmd_list *cmdlist)
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{
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cmdq_append(cmdq, cmdlist);
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if (cmdq->item == NULL) {
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cmdq->cmd = NULL;
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cmdq_continue(cmdq);
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}
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}
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/* Add command list to queue. */
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void
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cmdq_append(struct cmd_q *cmdq, struct cmd_list *cmdlist)
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{
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struct cmd_q_item *item;
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item = xcalloc(1, sizeof *item);
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item->cmdlist = cmdlist;
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TAILQ_INSERT_TAIL(&cmdq->queue, item, qentry);
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cmdlist->references++;
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}
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/* Continue processing command queue. Returns 1 if finishes empty. */
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int
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cmdq_continue(struct cmd_q *cmdq)
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{
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struct cmd_q_item *next;
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enum cmd_retval retval;
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int empty, guard, flags;
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char s[1024];
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notify_disable();
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empty = TAILQ_EMPTY(&cmdq->queue);
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if (empty)
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goto empty;
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if (cmdq->item == NULL) {
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cmdq->item = TAILQ_FIRST(&cmdq->queue);
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cmdq->cmd = TAILQ_FIRST(&cmdq->item->cmdlist->list);
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} else
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cmdq->cmd = TAILQ_NEXT(cmdq->cmd, qentry);
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do {
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next = TAILQ_NEXT(cmdq->item, qentry);
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while (cmdq->cmd != NULL) {
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cmd_print(cmdq->cmd, s, sizeof s);
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log_debug("cmdq %p: %s (client %d)", cmdq, s,
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cmdq->client != NULL ? cmdq->client->ibuf.fd : -1);
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cmdq->time = time(NULL);
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cmdq->number++;
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flags = !!(cmdq->cmd->flags & CMD_CONTROL);
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guard = cmdq_guard(cmdq, "begin", flags);
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retval = cmdq->cmd->entry->exec(cmdq->cmd, cmdq);
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if (guard) {
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if (retval == CMD_RETURN_ERROR)
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cmdq_guard(cmdq, "error", flags);
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else
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cmdq_guard(cmdq, "end", flags);
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}
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if (retval == CMD_RETURN_ERROR)
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break;
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if (retval == CMD_RETURN_WAIT)
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goto out;
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if (retval == CMD_RETURN_STOP) {
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cmdq_flush(cmdq);
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goto empty;
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}
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cmdq->cmd = TAILQ_NEXT(cmdq->cmd, qentry);
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}
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TAILQ_REMOVE(&cmdq->queue, cmdq->item, qentry);
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cmd_list_free(cmdq->item->cmdlist);
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free(cmdq->item);
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cmdq->item = next;
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if (cmdq->item != NULL)
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cmdq->cmd = TAILQ_FIRST(&cmdq->item->cmdlist->list);
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} while (cmdq->item != NULL);
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empty:
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if (cmdq->client_exit > 0)
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cmdq->client->flags |= CLIENT_EXIT;
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if (cmdq->emptyfn != NULL)
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cmdq->emptyfn(cmdq); /* may free cmdq */
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empty = 1;
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out:
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notify_enable();
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return (empty);
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}
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/* Flush command queue. */
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void
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cmdq_flush(struct cmd_q *cmdq)
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{
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struct cmd_q_item *item, *item1;
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TAILQ_FOREACH_SAFE(item, &cmdq->queue, qentry, item1) {
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TAILQ_REMOVE(&cmdq->queue, item, qentry);
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cmd_list_free(item->cmdlist);
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free(item);
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}
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cmdq->item = NULL;
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}
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