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20636d956d
commands and allow a command to block execution of subsequent commands. This allows run-shell and if-shell to be synchronous which has been much requested. Each client has a default command queue and commands are consumed one at a time from it. A command may suspend execution from the queue by returning CMD_RETURN_WAIT and then resume it by calling cmd_continue() - for example run-shell does this from the callback that is fired after the job is freed. When the command queue becomes empty, command clients are automatically exited (unless attaching). A callback is also fired - this is used for nested commands in, for example, if-shell which can block execution of the client's cmdq until a new cmdq becomes empty. Also merge all the old error/info/print functions together and lose the old curclient/cmdclient distinction - a cmdq is bound to one client (or none if in the configuration file), this is a command client if c->session is NULL otherwise an attached client.
151 lines
3.3 KiB
C
151 lines
3.3 KiB
C
/* $OpenBSD$ */
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/*
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* Copyright (c) 2008 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 <sys/stat.h>
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#include <ctype.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tmux.h"
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struct cmd_q *cfg_cmd_q;
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int cfg_finished;
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int cfg_references;
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struct causelist cfg_causes;
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int
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load_cfg(const char *path, struct cmd_q *cmdq, char **cause)
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{
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FILE *f;
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u_int n, found;
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char *buf, *copy, *line, *cause1, *msg;
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size_t len, oldlen;
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struct cmd_list *cmdlist;
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if ((f = fopen(path, "rb")) == NULL) {
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xasprintf(cause, "%s: %s", path, strerror(errno));
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return (-1);
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}
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n = found = 0;
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line = NULL;
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while ((buf = fgetln(f, &len))) {
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/* Trim \n. */
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if (buf[len - 1] == '\n')
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len--;
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log_debug("%s: %.*s", path, (int)len, buf);
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/* Current line is the continuation of the previous one. */
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if (line != NULL) {
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oldlen = strlen(line);
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line = xrealloc(line, 1, oldlen + len + 1);
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} else {
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oldlen = 0;
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line = xmalloc(len + 1);
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}
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/* Append current line to the previous. */
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memcpy(line + oldlen, buf, len);
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line[oldlen + len] = '\0';
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n++;
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/* Continuation: get next line? */
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len = strlen(line);
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if (len > 0 && line[len - 1] == '\\') {
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line[len - 1] = '\0';
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/* Ignore escaped backslash at EOL. */
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if (len > 1 && line[len - 2] != '\\')
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continue;
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}
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copy = line;
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line = NULL;
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/* Skip empty lines. */
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buf = copy;
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while (isspace((u_char)*buf))
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buf++;
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if (*buf == '\0') {
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free(copy);
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continue;
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}
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/* Parse and run the command. */
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if (cmd_string_parse(buf, &cmdlist, path, n, &cause1) != 0) {
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free(copy);
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if (cause1 == NULL)
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continue;
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xasprintf(&msg, "%s:%u: %s", path, n, cause1);
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ARRAY_ADD(&cfg_causes, msg);
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free(cause1);
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continue;
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}
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free(copy);
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if (cmdlist == NULL)
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continue;
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cmdq_append(cmdq, cmdlist);
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cmd_list_free(cmdlist);
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found++;
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}
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if (line != NULL)
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free(line);
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fclose(f);
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return (found);
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}
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void
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cfg_default_done(unused struct cmd_q *cmdq)
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{
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if (--cfg_references != 0)
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return;
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cfg_finished = 1;
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if (!RB_EMPTY(&sessions))
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cfg_show_causes(RB_MIN(sessions, &sessions));
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cmdq_free(cfg_cmd_q);
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cfg_cmd_q = NULL;
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}
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void
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cfg_show_causes(struct session *s)
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{
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struct window_pane *wp;
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char *cause;
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u_int i;
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if (s == NULL || ARRAY_EMPTY(&cfg_causes))
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return;
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wp = s->curw->window->active;
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window_pane_set_mode(wp, &window_copy_mode);
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window_copy_init_for_output(wp);
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for (i = 0; i < ARRAY_LENGTH(&cfg_causes); i++) {
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cause = ARRAY_ITEM(&cfg_causes, i);
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window_copy_add(wp, "%s", cause);
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free(cause);
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}
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ARRAY_FREE(&cfg_causes);
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}
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