![[BACK]](/icons/back.gif){kind=icon}
Return to cmd-queue.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [local] / src / usr.bin / tmux|
Return to cmd-queue.c CVS log | Up to [local] / src / usr.bin / tmux |
1.3 ! nicm 1: /* $OpenBSD: cmd-queue.c,v 1.2 2013/03/25 10:05:00 nicm Exp $ */
1.1 nicm 2:
3: /*
4: * Copyright (c) 2013 Nicholas Marriott <nicm@users.sourceforge.net>
5: *
6: * Permission to use, copy, modify, and distribute this software for any
7: * purpose with or without fee is hereby granted, provided that the above
8: * copyright notice and this permission notice appear in all copies.
9: *
10: * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11: * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12: * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13: * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14: * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
15: * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
16: * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17: */
18:
19: #include <sys/types.h>
20:
21: #include <ctype.h>
22: #include <stdlib.h>
23:
24: #include "tmux.h"
25:
26: /* Create new command queue. */
27: struct cmd_q *
28: cmdq_new(struct client *c)
29: {
30: struct cmd_q *cmdq;
31:
32: cmdq = xcalloc(1, sizeof *cmdq);
33: cmdq->references = 1;
34: cmdq->dead = 0;
35:
36: cmdq->client = c;
37: cmdq->client_exit = 0;
38:
39: TAILQ_INIT(&cmdq->queue);
40: cmdq->item = NULL;
41: cmdq->cmd = NULL;
42:
43: return (cmdq);
44: }
45:
46: /* Free command queue */
47: int
48: cmdq_free(struct cmd_q *cmdq)
49: {
50: if (--cmdq->references != 0)
51: return (cmdq->dead);
52:
53: cmdq_flush(cmdq);
54: free(cmdq);
55: return (1);
56: }
57:
58: /* Show message from command. */
59: void printflike2
60: cmdq_print(struct cmd_q *cmdq, const char *fmt, ...)
61: {
62: struct client *c = cmdq->client;
63: struct window *w;
64: va_list ap;
65:
66: va_start(ap, fmt);
67:
68: if (c == NULL)
69: /* nothing */;
70: else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
71: va_start(ap, fmt);
72: evbuffer_add_vprintf(c->stdout_data, fmt, ap);
73: va_end(ap);
74:
75: evbuffer_add(c->stdout_data, "\n", 1);
76: server_push_stdout(c);
77: } else {
78: w = c->session->curw->window;
79: if (w->active->mode != &window_copy_mode) {
80: window_pane_reset_mode(w->active);
81: window_pane_set_mode(w->active, &window_copy_mode);
82: window_copy_init_for_output(w->active);
83: }
84: window_copy_vadd(w->active, fmt, ap);
85: }
86:
87: va_end(ap);
88: }
89:
90: /* Show info from command. */
91: void printflike2
92: cmdq_info(struct cmd_q *cmdq, const char *fmt, ...)
93: {
94: struct client *c = cmdq->client;
95: va_list ap;
96: char *msg;
97:
98: if (options_get_number(&global_options, "quiet"))
99: return;
100:
101: va_start(ap, fmt);
102:
103: if (c == NULL)
104: /* nothing */;
105: else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
106: va_start(ap, fmt);
107: evbuffer_add_vprintf(c->stdout_data, fmt, ap);
108: va_end(ap);
109:
110: evbuffer_add(c->stdout_data, "\n", 1);
111: server_push_stdout(c);
112: } else {
113: xvasprintf(&msg, fmt, ap);
114: *msg = toupper((u_char) *msg);
115: status_message_set(c, "%s", msg);
116: free(msg);
117: }
118:
119: va_end(ap);
120:
121: }
122:
123: /* Show error from command. */
124: void printflike2
125: cmdq_error(struct cmd_q *cmdq, const char *fmt, ...)
126: {
127: struct client *c = cmdq->client;
128: struct cmd *cmd = cmdq->cmd;
129: va_list ap;
130: char *msg, *cause;
131: size_t msglen;
132:
133: va_start(ap, fmt);
134: msglen = xvasprintf(&msg, fmt, ap);
135: va_end(ap);
136:
137: if (c == NULL) {
138: xasprintf(&cause, "%s:%u: %s", cmd->file, cmd->line, msg);
139: ARRAY_ADD(&cfg_causes, cause);
140: } else if (c->session == NULL || (c->flags & CLIENT_CONTROL)) {
141: evbuffer_add(c->stderr_data, msg, msglen);
142: evbuffer_add(c->stderr_data, "\n", 1);
143:
144: server_push_stderr(c);
145: c->retcode = 1;
146: } else {
147: *msg = toupper((u_char) *msg);
148: status_message_set(c, "%s", msg);
149: }
150:
151: free(msg);
152: }
153:
154: /* Add command list to queue and begin processing if needed. */
155: void
156: cmdq_run(struct cmd_q *cmdq, struct cmd_list *cmdlist)
157: {
158: cmdq_append(cmdq, cmdlist);
159:
160: if (cmdq->item == NULL) {
161: cmdq->cmd = NULL;
162: cmdq_continue(cmdq);
163: }
164: }
165:
166: /* Add command list to queue. */
167: void
168: cmdq_append(struct cmd_q *cmdq, struct cmd_list *cmdlist)
169: {
170: struct cmd_q_item *item;
171:
172: item = xcalloc(1, sizeof *item);
173: item->cmdlist = cmdlist;
174: TAILQ_INSERT_TAIL(&cmdq->queue, item, qentry);
175: cmdlist->references++;
176: }
177:
178: /* Continue processing command queue. Returns 1 if finishes empty. */
179: int
180: cmdq_continue(struct cmd_q *cmdq)
181: {
182: struct client *c = cmdq->client;
183: struct cmd_q_item *next;
184: enum cmd_retval retval;
185: int guards, empty;
1.3 ! nicm 186: char s[1024];
1.1 nicm 187:
188: guards = 0;
189: if (c != NULL && c->session != NULL)
190: guards = c->flags & CLIENT_CONTROL;
191:
192: notify_disable();
193:
194: empty = TAILQ_EMPTY(&cmdq->queue);
195: if (empty)
196: goto empty;
197:
198: if (cmdq->item == NULL) {
199: cmdq->item = TAILQ_FIRST(&cmdq->queue);
200: cmdq->cmd = TAILQ_FIRST(&cmdq->item->cmdlist->list);
201: } else
202: cmdq->cmd = TAILQ_NEXT(cmdq->cmd, qentry);
203:
204: do {
205: next = TAILQ_NEXT(cmdq->item, qentry);
206:
207: while (cmdq->cmd != NULL) {
1.3 ! nicm 208: cmd_print(cmdq->cmd, s, sizeof s);
! 209: log_debug("cmdq %p: %s (client %d)", cmdq, s,
! 210: cmdq->client != NULL ? cmdq->client->ibuf.fd : -1);
! 211:
1.1 nicm 212: if (guards)
213: cmdq_print(cmdq, "%%begin");
214: retval = cmdq->cmd->entry->exec(cmdq->cmd, cmdq);
1.2 nicm 215: if (guards) {
216: if (retval == CMD_RETURN_ERROR)
217: cmdq_print(cmdq, "%%error");
218: else
219: cmdq_print(cmdq, "%%end");
220: }
1.1 nicm 221:
222: if (retval == CMD_RETURN_ERROR)
223: break;
224: if (retval == CMD_RETURN_WAIT)
225: goto out;
226: if (retval == CMD_RETURN_STOP) {
227: cmdq_flush(cmdq);
228: goto empty;
229: }
230:
231: cmdq->cmd = TAILQ_NEXT(cmdq->cmd, qentry);
232: }
233:
234: TAILQ_REMOVE(&cmdq->queue, cmdq->item, qentry);
235: cmd_list_free(cmdq->item->cmdlist);
236: free(cmdq->item);
237:
238: cmdq->item = next;
239: if (cmdq->item != NULL)
240: cmdq->cmd = TAILQ_FIRST(&cmdq->item->cmdlist->list);
241: } while (cmdq->item != NULL);
242:
243: empty:
244: if (cmdq->client_exit)
245: cmdq->client->flags |= CLIENT_EXIT;
246: if (cmdq->emptyfn != NULL)
247: cmdq->emptyfn(cmdq); /* may free cmdq */
248: empty = 1;
249:
250: out:
251: notify_enable();
252: return (empty);
253: }
254:
255: /* Flush command queue. */
256: void
257: cmdq_flush(struct cmd_q *cmdq)
258: {
259: struct cmd_q_item *item, *item1;
260:
261: TAILQ_FOREACH_SAFE(item, &cmdq->queue, qentry, item1) {
262: TAILQ_REMOVE(&cmdq->queue, item, qentry);
263: cmd_list_free(item->cmdlist);
264: free(item);
265: }
266: cmdq->item = NULL;
267: }