Do not allow paste into panes which have exited, from Romain Francoise
[tmux.git] / cmd-show-buffer.c
blob0af82972c6f21679c04ea000f350e5c52df68b45
1 /* $OpenBSD$ */
3 /*
4 * Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
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.
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.
19 #include <sys/types.h>
21 #include <stdlib.h>
22 #include <vis.h>
24 #include "tmux.h"
27 * Show a paste buffer.
30 enum cmd_retval cmd_show_buffer_exec(struct cmd *, struct cmd_ctx *);
32 const struct cmd_entry cmd_show_buffer_entry = {
33 "show-buffer", "showb",
34 "b:", 0, 0,
35 CMD_BUFFER_USAGE,
37 NULL,
38 NULL,
39 cmd_show_buffer_exec
42 enum cmd_retval
43 cmd_show_buffer_exec(struct cmd *self, struct cmd_ctx *ctx)
45 struct args *args = self->args;
46 struct session *s;
47 struct paste_buffer *pb;
48 int buffer;
49 char *in, *buf, *ptr, *cause;
50 size_t size, len;
51 u_int width;
53 if ((s = cmd_find_session(ctx, NULL, 0)) == NULL)
54 return (CMD_RETURN_ERROR);
56 if (!args_has(args, 'b')) {
57 if ((pb = paste_get_top(&global_buffers)) == NULL) {
58 ctx->error(ctx, "no buffers");
59 return (CMD_RETURN_ERROR);
61 } else {
62 buffer = args_strtonum(args, 'b', 0, INT_MAX, &cause);
63 if (cause != NULL) {
64 ctx->error(ctx, "buffer %s", cause);
65 free(cause);
66 return (CMD_RETURN_ERROR);
69 pb = paste_get_index(&global_buffers, buffer);
70 if (pb == NULL) {
71 ctx->error(ctx, "no buffer %d", buffer);
72 return (CMD_RETURN_ERROR);
76 size = pb->size;
77 if (size > SIZE_MAX / 4 - 1)
78 size = SIZE_MAX / 4 - 1;
79 in = xmalloc(size * 4 + 1);
80 strvisx(in, pb->data, size, VIS_OCTAL|VIS_TAB);
82 width = s->sx;
83 if (ctx->cmdclient != NULL)
84 width = ctx->cmdclient->tty.sx;
86 buf = xmalloc(width + 1);
87 len = 0;
89 ptr = in;
90 do {
91 buf[len++] = *ptr++;
93 if (len == width || buf[len - 1] == '\n') {
94 if (buf[len - 1] == '\n')
95 len--;
96 buf[len] = '\0';
98 ctx->print(ctx, "%s", buf);
99 len = 0;
101 } while (*ptr != '\0');
103 if (len != 0) {
104 buf[len] = '\0';
105 ctx->print(ctx, "%s", buf);
107 free(buf);
109 free(in);
111 return (CMD_RETURN_NORMAL);