Annotation of embedaddon/tmux/control.c, revision 1.1.1.1
1.1 misho 1: /* $OpenBSD$ */
2:
3: /*
4: * Copyright (c) 2012 Nicholas Marriott <nicholas.marriott@gmail.com>
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>
23: #include <stdlib.h>
24: #include <string.h>
25: #include <time.h>
26:
27: #include "tmux.h"
28:
29: /* Write a line. */
30: void
31: control_write(struct client *c, const char *fmt, ...)
32: {
33: va_list ap;
34:
35: va_start(ap, fmt);
36: evbuffer_add_vprintf(c->stdout_data, fmt, ap);
37: va_end(ap);
38:
39: evbuffer_add(c->stdout_data, "\n", 1);
40: server_client_push_stdout(c);
41: }
42:
43: /* Write a buffer, adding a terminal newline. Empties buffer. */
44: void
45: control_write_buffer(struct client *c, struct evbuffer *buffer)
46: {
47: evbuffer_add_buffer(c->stdout_data, buffer);
48: evbuffer_add(c->stdout_data, "\n", 1);
49: server_client_push_stdout(c);
50: }
51:
52: /* Control error callback. */
53: static enum cmd_retval
54: control_error(struct cmdq_item *item, void *data)
55: {
56: struct client *c = item->client;
57: char *error = data;
58:
59: cmdq_guard(item, "begin", 1);
60: control_write(c, "parse error: %s", error);
61: cmdq_guard(item, "error", 1);
62:
63: free(error);
64: return (CMD_RETURN_NORMAL);
65: }
66:
67: /* Control input callback. Read lines and fire commands. */
68: void
69: control_callback(struct client *c, int closed, __unused void *data)
70: {
71: char *line, *cause;
72: struct cmd_list *cmdlist;
73: struct cmd *cmd;
74: struct cmdq_item *item;
75:
76: if (closed)
77: c->flags |= CLIENT_EXIT;
78:
79: for (;;) {
80: line = evbuffer_readln(c->stdin_data, NULL, EVBUFFER_EOL_LF);
81: if (line == NULL)
82: break;
83: if (*line == '\0') { /* empty line exit */
84: c->flags |= CLIENT_EXIT;
85: break;
86: }
87:
88: cmdlist = cmd_string_parse(line, NULL, 0, &cause);
89: if (cmdlist == NULL) {
90: item = cmdq_get_callback(control_error, cause);
91: cmdq_append(c, item);
92: } else {
93: TAILQ_FOREACH(cmd, &cmdlist->list, qentry)
94: cmd->flags |= CMD_CONTROL;
95: item = cmdq_get_command(cmdlist, NULL, NULL, 0);
96: cmdq_append(c, item);
97: cmd_list_free(cmdlist);
98: }
99:
100: free(line);
101: }
102: }
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