tmux/paste.c

200 lines
4.2 KiB
C

/* $Id$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicm@users.sourceforge.net>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER
* IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/time.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/*
* Stack of paste buffers. Note that paste buffer data is not necessarily a C
* string!
*/
ARRAY_DECL(, struct paste_buffer *) paste_buffers = ARRAY_INITIALIZER;
/* Return each item of the stack in turn. */
struct paste_buffer *
paste_walk_stack(u_int *idx)
{
struct paste_buffer *pb;
pb = paste_get_index(*idx);
(*idx)++;
return (pb);
}
/* Get the top item on the stack. */
struct paste_buffer *
paste_get_top(void)
{
if (ARRAY_LENGTH(&paste_buffers) == 0)
return (NULL);
return (ARRAY_FIRST(&paste_buffers));
}
/* Get an item by its index. */
struct paste_buffer *
paste_get_index(u_int idx)
{
if (idx >= ARRAY_LENGTH(&paste_buffers))
return (NULL);
return (ARRAY_ITEM(&paste_buffers, idx));
}
/* Free the top item on the stack. */
int
paste_free_top(void)
{
struct paste_buffer *pb;
if (ARRAY_LENGTH(&paste_buffers) == 0)
return (-1);
pb = ARRAY_FIRST(&paste_buffers);
ARRAY_REMOVE(&paste_buffers, 0);
free(pb->data);
free(pb);
return (0);
}
/* Free an item by index. */
int
paste_free_index(u_int idx)
{
struct paste_buffer *pb;
if (idx >= ARRAY_LENGTH(&paste_buffers))
return (-1);
pb = ARRAY_ITEM(&paste_buffers, idx);
ARRAY_REMOVE(&paste_buffers, idx);
free(pb->data);
free(pb);
return (0);
}
/*
* Add an item onto the top of the stack, freeing the bottom if at limit. Note
* that the caller is responsible for allocating data.
*/
void
paste_add(char *data, size_t size, u_int limit)
{
struct paste_buffer *pb;
if (size == 0)
return;
while (ARRAY_LENGTH(&paste_buffers) >= limit) {
pb = ARRAY_LAST(&paste_buffers);
free(pb->data);
free(pb);
ARRAY_TRUNC(&paste_buffers, 1);
}
pb = xmalloc(sizeof *pb);
ARRAY_INSERT(&paste_buffers, 0, pb);
pb->data = data;
pb->size = size;
}
/*
* Replace an item on the stack. Note that the caller is responsible for
* allocating data.
*/
int
paste_replace(u_int idx, char *data, size_t size)
{
struct paste_buffer *pb;
if (size == 0) {
free(data);
return (0);
}
if (idx >= ARRAY_LENGTH(&paste_buffers))
return (-1);
pb = ARRAY_ITEM(&paste_buffers, idx);
free(pb->data);
pb->data = data;
pb->size = size;
return (0);
}
/* Convert start of buffer into a nice string. */
char *
paste_make_sample(struct paste_buffer *pb, int utf8flag)
{
char *buf;
size_t len, used;
const int flags = VIS_OCTAL|VIS_TAB|VIS_NL;
const size_t width = 200;
len = pb->size;
if (len > width)
len = width;
buf = xmalloc(len * 4 + 4);
if (utf8flag)
used = utf8_strvis(buf, pb->data, len, flags);
else
used = strvisx(buf, pb->data, len, flags);
if (pb->size > width || used > width)
strlcpy(buf + width, "...", 4);
return (buf);
}
/* Paste into a window pane, filtering '\n' according to separator. */
void
paste_send_pane(struct paste_buffer *pb, struct window_pane *wp,
const char *sep, int bracket)
{
const char *data = pb->data, *end = data + pb->size, *lf;
size_t seplen;
if (bracket)
bufferevent_write(wp->event, "\033[200~", 6);
seplen = strlen(sep);
while ((lf = memchr(data, '\n', end - data)) != NULL) {
if (lf != data)
bufferevent_write(wp->event, data, lf - data);
bufferevent_write(wp->event, sep, seplen);
data = lf + 1;
}
if (end != data)
bufferevent_write(wp->event, data, end - data);
if (bracket)
bufferevent_write(wp->event, "\033[201~", 6);
}