1 /* $OpenBSD$ */
2
3 /*
4 * Copyright (c) 2009 Tiago Cunha <me@tiagocunha.org>
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 #include <sys/stat.h>
21
22 #include <errno.h>
23 #include <fcntl.h>
24 #include <stdlib.h>
25 #include <string.h>
26 #include <unistd.h>
27
28 #include "tmux.h"
29
30 /*
31 * Saves a paste buffer to a file.
32 */
33
34 static enum cmd_retval cmd_save_buffer_exec(struct cmd *, struct cmdq_item *);
35
36 const struct cmd_entry cmd_save_buffer_entry = {
37 .name = "save-buffer",
38 .alias = "saveb",
39
40 .args = { "ab:", 1, 1, NULL },
41 .usage = "[-a] " CMD_BUFFER_USAGE " path",
42
43 .flags = CMD_AFTERHOOK,
44 .exec = cmd_save_buffer_exec
45 };
46
47 const struct cmd_entry cmd_show_buffer_entry = {
48 .name = "show-buffer",
49 .alias = "showb",
50
51 .args = { "b:", 0, 0, NULL },
52 .usage = CMD_BUFFER_USAGE,
53
54 .flags = CMD_AFTERHOOK,
55 .exec = cmd_save_buffer_exec
56 };
57
58 static void
cmd_save_buffer_done(__unused struct client * c,const char * path,int error,__unused int closed,__unused struct evbuffer * buffer,void * data)59 cmd_save_buffer_done(__unused struct client *c, const char *path, int error,
60 __unused int closed, __unused struct evbuffer *buffer, void *data)
61 {
62 struct cmdq_item *item = data;
63
64 if (!closed)
65 return;
66
67 if (error != 0)
68 cmdq_error(item, "%s: %s", path, strerror(error));
69 cmdq_continue(item);
70 }
71
72 static enum cmd_retval
cmd_save_buffer_exec(struct cmd * self,struct cmdq_item * item)73 cmd_save_buffer_exec(struct cmd *self, struct cmdq_item *item)
74 {
75 struct args *args = cmd_get_args(self);
76 struct client *c = cmdq_get_client(item);
77 struct paste_buffer *pb;
78 int flags;
79 const char *bufname = args_get(args, 'b'), *bufdata;
80 size_t bufsize;
81 char *path;
82 struct evbuffer *evb;
83
84 if (bufname == NULL) {
85 if ((pb = paste_get_top(NULL)) == NULL) {
86 cmdq_error(item, "no buffers");
87 return (CMD_RETURN_ERROR);
88 }
89 } else {
90 pb = paste_get_name(bufname);
91 if (pb == NULL) {
92 cmdq_error(item, "no buffer %s", bufname);
93 return (CMD_RETURN_ERROR);
94 }
95 }
96 bufdata = paste_buffer_data(pb, &bufsize);
97
98 if (cmd_get_entry(self) == &cmd_show_buffer_entry) {
99 if (c->session != NULL || (c->flags & CLIENT_CONTROL)) {
100 evb = evbuffer_new();
101 if (evb == NULL)
102 fatalx("out of memory");
103 evbuffer_add(evb, bufdata, bufsize);
104 cmdq_print_data(item, 1, evb);
105 evbuffer_free(evb);
106 return (CMD_RETURN_NORMAL);
107 }
108 path = xstrdup("-");
109 } else
110 path = format_single_from_target(item, args_string(args, 0));
111 if (args_has(args, 'a'))
112 flags = O_APPEND;
113 else
114 flags = O_TRUNC;
115 file_write(cmdq_get_client(item), path, flags, bufdata, bufsize,
116 cmd_save_buffer_done, item);
117 free(path);
118
119 return (CMD_RETURN_WAIT);
120 }
121