1/* $Id: cmd-show-buffer.c,v 1.1.1.2 2011/08/17 18:40:04 jmmv Exp $ */
2
3/*
4 * Copyright (c) 2007 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 "tmux.h"
22
23/*
24 * Show a session paste buffer.
25 */
26
27int	cmd_show_buffer_exec(struct cmd *, struct cmd_ctx *);
28
29const struct cmd_entry cmd_show_buffer_entry = {
30	"show-buffer", "showb",
31	"b:", 0, 0,
32	CMD_BUFFER_USAGE,
33	0,
34	NULL,
35	NULL,
36	cmd_show_buffer_exec
37};
38
39int
40cmd_show_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
41{
42	struct args		*args = self->args;
43	struct session		*s;
44	struct paste_buffer	*pb;
45	int			 buffer;
46	char			*in, *buf, *ptr, *cause;
47	size_t			 size, len;
48	u_int			 width;
49
50	if ((s = cmd_find_session(ctx, NULL, 0)) == NULL)
51		return (-1);
52
53	if (!args_has(args, 'b')) {
54		if ((pb = paste_get_top(&global_buffers)) == NULL) {
55			ctx->error(ctx, "no buffers");
56			return (-1);
57		}
58	} else {
59		buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
60		if (cause != NULL) {
61			ctx->error(ctx, "buffer %s", cause);
62			xfree(cause);
63			return (-1);
64		}
65
66		pb = paste_get_index(&global_buffers, buffer);
67		if (pb == NULL) {
68			ctx->error(ctx, "no buffer %d", buffer);
69			return (-1);
70		}
71	}
72
73	size = pb->size;
74	if (size > SIZE_MAX / 4 - 1)
75		size = SIZE_MAX / 4 - 1;
76	in = xmalloc(size * 4 + 1);
77	strvisx(in, pb->data, size, VIS_OCTAL|VIS_TAB);
78
79	width = s->sx;
80	if (ctx->cmdclient != NULL)
81		width = ctx->cmdclient->tty.sx;
82
83	buf = xmalloc(width + 1);
84	len = 0;
85
86	ptr = in;
87	do {
88		buf[len++] = *ptr++;
89
90		if (len == width || buf[len - 1] == '\n') {
91			if (buf[len - 1] == '\n')
92				len--;
93			buf[len] = '\0';
94
95			ctx->print(ctx, "%s", buf);
96			len = 0;
97		}
98	} while (*ptr != '\0');
99
100	if (len != 0) {
101		buf[len] = '\0';
102		ctx->print(ctx, "%s", buf);
103	}
104	xfree(buf);
105
106	xfree(in);
107
108	return (0);
109}
110