Annotation of src/usr.bin/tmux/control.c, Revision 1.28
1.28 ! nicm 1: /* $OpenBSD: control.c,v 1.27 2020/04/13 14:04:25 nicm Exp $ */
1.1 nicm 2:
3: /*
1.17 nicm 4: * Copyright (c) 2012 Nicholas Marriott <nicholas.marriott@gmail.com>
1.1 nicm 5: * Copyright (c) 2012 George Nachman <tmux@georgester.com>
6: *
7: * Permission to use, copy, modify, and distribute this software for any
8: * purpose with or without fee is hereby granted, provided that the above
9: * copyright notice and this permission notice appear in all copies.
10: *
11: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
16: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
17: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18: */
19:
20: #include <sys/types.h>
21:
22: #include <event.h>
1.2 nicm 23: #include <stdlib.h>
1.1 nicm 24: #include <string.h>
1.10 nicm 25: #include <time.h>
1.1 nicm 26:
27: #include "tmux.h"
28:
29: /* Write a line. */
1.13 nicm 30: void
1.1 nicm 31: control_write(struct client *c, const char *fmt, ...)
32: {
1.25 nicm 33: va_list ap;
1.1 nicm 34:
35: va_start(ap, fmt);
1.25 nicm 36: file_vprint(c, fmt, ap);
37: file_print(c, "\n");
1.1 nicm 38: va_end(ap);
39: }
40:
1.18 nicm 41: /* Control error callback. */
42: static enum cmd_retval
1.19 nicm 43: control_error(struct cmdq_item *item, void *data)
1.18 nicm 44: {
1.26 nicm 45: struct client *c = cmdq_get_client(item);
1.18 nicm 46: char *error = data;
47:
1.19 nicm 48: cmdq_guard(item, "begin", 1);
1.18 nicm 49: control_write(c, "parse error: %s", error);
1.19 nicm 50: cmdq_guard(item, "error", 1);
1.18 nicm 51:
52: free(error);
53: return (CMD_RETURN_NORMAL);
54: }
55:
1.1 nicm 56: /* Control input callback. Read lines and fire commands. */
1.25 nicm 57: static void
58: control_callback(__unused struct client *c, __unused const char *path,
59: int error, int closed, struct evbuffer *buffer, __unused void *data)
1.1 nicm 60: {
1.22 nicm 61: char *line;
1.19 nicm 62: struct cmdq_item *item;
1.22 nicm 63: struct cmd_parse_result *pr;
1.1 nicm 64:
1.25 nicm 65: if (closed || error != 0)
1.1 nicm 66: c->flags |= CLIENT_EXIT;
67:
68: for (;;) {
1.25 nicm 69: line = evbuffer_readln(buffer, NULL, EVBUFFER_EOL_LF);
1.1 nicm 70: if (line == NULL)
71: break;
1.25 nicm 72: log_debug("%s: %s", __func__, line);
1.1 nicm 73: if (*line == '\0') { /* empty line exit */
1.24 nicm 74: free(line);
1.1 nicm 75: c->flags |= CLIENT_EXIT;
76: break;
77: }
78:
1.22 nicm 79: pr = cmd_parse_from_string(line, NULL);
80: switch (pr->status) {
81: case CMD_PARSE_EMPTY:
82: break;
83: case CMD_PARSE_ERROR:
84: item = cmdq_get_callback(control_error, pr->error);
1.19 nicm 85: cmdq_append(c, item);
1.22 nicm 86: break;
87: case CMD_PARSE_SUCCESS:
1.28 ! nicm 88: item = cmdq_get_command(pr->cmdlist, NULL, NULL,
! 89: CMDQ_STATE_CONTROL);
1.19 nicm 90: cmdq_append(c, item);
1.22 nicm 91: cmd_list_free(pr->cmdlist);
92: break;
1.1 nicm 93: }
94:
1.2 nicm 95: free(line);
1.1 nicm 96: }
1.25 nicm 97: }
98:
99: void
100: control_start(struct client *c)
101: {
102: file_read(c, "-", control_callback, c);
103:
104: if (c->flags & CLIENT_CONTROLCONTROL)
105: file_print(c, "\033P1000p");
1.1 nicm 106: }