1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
|
/** \file kill.c
The killring.
Works like the killring in emacs and readline. The killring is cut
and paste with a memory of previous cuts. It supports integration
with the X clipboard.
*/
#include "config.h"
#include <stdlib.h>
#include <stdio.h>
#include <wchar.h>
#include <termios.h>
#include <unistd.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <dirent.h>
#include "fallback.h"
#include "util.h"
#include "wutil.h"
#include "kill.h"
#include "proc.h"
#include "sanity.h"
#include "common.h"
#include "env.h"
#include "exec.h"
#include "halloc.h"
#include "path.h"
/**
Maximum entries in killring
*/
#define KILL_MAX 8192
static ll_node_t /** Last kill string */*kill_last=0, /** Current kill string */*kill_current =0;
/**
Contents of the X clipboard, at last time we checked it
*/
static wchar_t *cut_buffer=0;
/**
Test if the xsel command is installed. Since this is called often,
cache the result.
*/
static int has_xsel()
{
static int called=0;
static int res = 0;
if (!called) {
void *context = halloc(0, 0);
wchar_t *path = path_get_path( context, L"xsel" );
res = !!path;
halloc_free( context );
called = 1;
}
return res;
}
/**
Add the string to the internal killring
*/
static void kill_add_internal( wchar_t *str )
{
if( wcslen( str ) == 0 )
return;
if( kill_last == 0 )
{
kill_current = kill_last=(ll_node_t *)malloc( sizeof( ll_node_t ) );
kill_current->data = wcsdup(str);
kill_current->prev = kill_current;
}
else
{
kill_current = (ll_node_t *)malloc( sizeof( ll_node_t ) );
kill_current->data = kill_last->data;
kill_last->data = wcsdup(str);
kill_current->prev = kill_last->prev;
kill_last->prev = kill_current;
kill_current = kill_last;
}
}
void kill_add( wchar_t *str )
{
wchar_t *cmd = NULL;
wchar_t *escaped_str;
kill_add_internal(str);
/*
Check to see if user has set the FISH_CLIPBOARD_CMD variable,
and, if so, use it instead of checking the display, etc.
I couldn't think of a safe way to allow overide of the echo
command too, so, the command used must accept the input via stdin.
*/
wchar_t *clipboard;
if( (clipboard = env_get(L"FISH_CLIPBOARD_CMD")) )
{
escaped_str = escape( str, 1 );
cmd = wcsdupcat(L"echo -n ", escaped_str, clipboard);
}
else
{
/* This is for sending the kill to the X copy-and-paste buffer */
if( !has_xsel() ) {
return;
}
wchar_t *disp;
if( (disp = env_get( L"DISPLAY" )) )
{
escaped_str = escape( str, 1 );
cmd = wcsdupcat(L"echo ", escaped_str, L"|xsel -b" );
}
}
if (cmd != NULL)
{
if( exec_subshell( cmd, 0 ) == -1 )
{
/*
Do nothing on failiure
*/
}
free( cut_buffer );
free( cmd );
cut_buffer = escaped_str;
}
}
/**
Remove the specified node from the circular list
*/
static void kill_remove_node( ll_node_t *n )
{
if( n->prev == n )
{
kill_last=kill_current = 0;
}
else
{
ll_node_t *nxt = n->prev;
while( nxt->prev != n )
{
nxt=nxt->prev;
}
nxt->prev = n->prev;
if( kill_last == n )
{
kill_last = n->prev;
}
kill_current=kill_last;
free( n->data );
free( n );
}
}
/**
Remove first match for specified string from circular list
*/
static void kill_remove( wchar_t *s )
{
ll_node_t *n, *next=0;
if( !kill_last )
{
return;
}
for( n=kill_last;
n!=kill_last || next == 0 ;
n=n->prev )
{
if( wcscmp( (wchar_t *)n->data, s ) == 0 )
{
kill_remove_node( n );
break;
}
next = n;
}
}
void kill_replace( wchar_t *old, wchar_t *newv )
{
kill_remove( old );
kill_add( newv );
}
wchar_t *kill_yank_rotate()
{
if( kill_current == 0 )
return L"";
kill_current = kill_current->prev;
return (wchar_t *)kill_current->data;
}
/**
Check the X clipboard. If it has been changed, add the new
clipboard contents to the fish killring.
*/
static void kill_check_x_buffer()
{
wchar_t *disp;
if( !has_xsel() )
return;
if( (disp = env_get( L"DISPLAY" )) )
{
size_t i;
wcstring cmd = L"xsel -t 500 -b";
wcstring new_cut_buffer=L"";
wcstring_list_t list;
if( exec_subshell2( cmd, list ) != -1 )
{
for( i=0; i<list.size(); i++ )
{
wcstring next_line = escape_string( list.at(i), 0 );
if (i > 0) new_cut_buffer += L"\\n";
new_cut_buffer += next_line;
}
if( new_cut_buffer.size() > 0 )
{
/*
The buffer is inserted with backslash escapes,
since we don't really like tabs, newlines,
etc. anyway.
*/
if (cut_buffer == NULL || cut_buffer != new_cut_buffer)
{
free(cut_buffer);
cut_buffer = wcsdup(new_cut_buffer.c_str());
kill_add_internal( cut_buffer );
}
}
}
}
}
wchar_t *kill_yank()
{
kill_check_x_buffer();
if( kill_current == 0 )
return L"";
kill_current=kill_last;
return (wchar_t *)kill_current->data;
}
void kill_sanity_check()
{
int i;
if( is_interactive )
{
/* Test that the kill-ring is consistent */
if( kill_current != 0 )
{
int kill_ok = 0;
ll_node_t *tmp = kill_current->prev;
for( i=0; i<KILL_MAX; i++ )
{
if( tmp == 0 )
break;
if( tmp->data == 0 )
break;
if( tmp == kill_current )
{
kill_ok = 1;
break;
}
tmp = tmp->prev;
}
if( !kill_ok )
{
debug( 0,
L"Killring inconsistent" );
sanity_lose();
}
}
}
}
void kill_init()
{
}
void kill_destroy()
{
if( cut_buffer )
free( cut_buffer );
if( kill_current != 0 )
{
kill_current = kill_last->prev;
kill_last->prev = 0;
while( kill_current )
{
ll_node_t *tmp = kill_current;
kill_current = kill_current->prev;
free( tmp->data );
free( tmp );
}
}
}
|