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
|
/* $OpenBSD$ */
/*
* Copyright (c) 2007 Nicholas Marriott <nicholas.marriott@gmail.com>
*
* 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"
/*
* Set of paste buffers. Note that paste buffer data is not necessarily a C
* string!
*/
struct paste_buffer {
char *data;
size_t size;
char *name;
time_t created;
int automatic;
u_int order;
RB_ENTRY(paste_buffer) name_entry;
RB_ENTRY(paste_buffer) time_entry;
};
u_int paste_next_index;
u_int paste_next_order;
u_int paste_num_automatic;
RB_HEAD(paste_name_tree, paste_buffer) paste_by_name;
RB_HEAD(paste_time_tree, paste_buffer) paste_by_time;
int paste_cmp_names(const struct paste_buffer *, const struct paste_buffer *);
RB_PROTOTYPE(paste_name_tree, paste_buffer, name_entry, paste_cmp_names);
RB_GENERATE(paste_name_tree, paste_buffer, name_entry, paste_cmp_names);
int paste_cmp_times(const struct paste_buffer *, const struct paste_buffer *);
RB_PROTOTYPE(paste_time_tree, paste_buffer, time_entry, paste_cmp_times);
RB_GENERATE(paste_time_tree, paste_buffer, time_entry, paste_cmp_times);
int
paste_cmp_names(const struct paste_buffer *a, const struct paste_buffer *b)
{
return (strcmp(a->name, b->name));
}
int
paste_cmp_times(const struct paste_buffer *a, const struct paste_buffer *b)
{
if (a->order > b->order)
return (-1);
if (a->order < b->order)
return (1);
return (0);
}
/* Get paste buffer name. */
const char *
paste_buffer_name(struct paste_buffer *pb)
{
return (pb->name);
}
/* Get paste buffer order. */
u_int
paste_buffer_order(struct paste_buffer *pb)
{
return (pb->order);
}
/* Get paste buffer created. */
time_t
paste_buffer_created(struct paste_buffer *pb)
{
return (pb->created);
}
/* Get paste buffer data. */
const char *
paste_buffer_data(struct paste_buffer *pb, size_t *size)
{
if (size != NULL)
*size = pb->size;
return (pb->data);
}
/* Walk paste buffers by time. */
struct paste_buffer *
paste_walk(struct paste_buffer *pb)
{
if (pb == NULL)
return (RB_MIN(paste_time_tree, &paste_by_time));
return (RB_NEXT(paste_time_tree, &paste_by_time, pb));
}
/* Get the most recent automatic buffer. */
struct paste_buffer *
paste_get_top(const char **name)
{
struct paste_buffer *pb;
pb = RB_MIN(paste_time_tree, &paste_by_time);
if (pb == NULL)
return (NULL);
if (name != NULL)
*name = pb->name;
return (pb);
}
/* Get a paste buffer by name. */
struct paste_buffer *
paste_get_name(const char *name)
{
struct paste_buffer pbfind;
if (name == NULL || *name == '\0')
return (NULL);
pbfind.name = (char *)name;
return (RB_FIND(paste_name_tree, &paste_by_name, &pbfind));
}
/* Free a paste buffer. */
void
paste_free(struct paste_buffer *pb)
{
RB_REMOVE(paste_name_tree, &paste_by_name, pb);
RB_REMOVE(paste_time_tree, &paste_by_time, pb);
if (pb->automatic)
paste_num_automatic--;
free(pb->data);
free(pb->name);
free(pb);
}
/*
* Add an automatic buffer, freeing the oldest automatic item if at limit. Note
* that the caller is responsible for allocating data.
*/
void
paste_add(char *data, size_t size)
{
struct paste_buffer *pb, *pb1;
u_int limit;
if (size == 0)
return;
limit = options_get_number(global_options, "buffer-limit");
RB_FOREACH_REVERSE_SAFE(pb, paste_time_tree, &paste_by_time, pb1) {
if (paste_num_automatic < limit)
break;
if (pb->automatic)
paste_free(pb);
}
pb = xmalloc(sizeof *pb);
pb->name = NULL;
do {
free(pb->name);
xasprintf(&pb->name, "buffer%04u", paste_next_index);
paste_next_index++;
} while (paste_get_name(pb->name) != NULL);
pb->data = data;
pb->size = size;
pb->automatic = 1;
paste_num_automatic++;
pb->created = time(NULL);
pb->order = paste_next_order++;
RB_INSERT(paste_name_tree, &paste_by_name, pb);
RB_INSERT(paste_time_tree, &paste_by_time, pb);
}
/* Rename a paste buffer. */
int
paste_rename(const char *oldname, const char *newname, char **cause)
{
struct paste_buffer *pb, *pb_new;
if (cause != NULL)
*cause = NULL;
if (oldname == NULL || *oldname == '\0') {
if (cause != NULL)
*cause = xstrdup("no buffer");
return (-1);
}
if (newname == NULL || *newname == '\0') {
if (cause != NULL)
*cause = xstrdup("new name is empty");
return (-1);
}
pb = paste_get_name(oldname);
if (pb == NULL) {
if (cause != NULL)
xasprintf(cause, "no buffer %s", oldname);
return (-1);
}
pb_new = paste_get_name(newname);
if (pb_new != NULL) {
if (cause != NULL)
xasprintf(cause, "buffer %s already exists", newname);
return (-1);
}
RB_REMOVE(paste_name_tree, &paste_by_name, pb);
free(pb->name);
pb->name = xstrdup(newname);
if (pb->automatic)
paste_num_automatic--;
pb->automatic = 0;
RB_INSERT(paste_name_tree, &paste_by_name, pb);
return (0);
}
/*
* Add or replace an item in the store. Note that the caller is responsible for
* allocating data.
*/
int
paste_set(char *data, size_t size, const char *name, char **cause)
{
struct paste_buffer *pb, *old;
if (cause != NULL)
*cause = NULL;
if (size == 0) {
free(data);
return (0);
}
if (name == NULL) {
paste_add(data, size);
return (0);
}
if (*name == '\0') {
if (cause != NULL)
*cause = xstrdup("empty buffer name");
return (-1);
}
pb = xmalloc(sizeof *pb);
pb->name = xstrdup(name);
pb->data = data;
pb->size = size;
pb->automatic = 0;
pb->order = paste_next_order++;
pb->created = time(NULL);
if ((old = paste_get_name(name)) != NULL)
paste_free(old);
RB_INSERT(paste_name_tree, &paste_by_name, pb);
RB_INSERT(paste_time_tree, &paste_by_time, pb);
return (0);
}
/* Convert start of buffer into a nice string. */
char *
paste_make_sample(struct paste_buffer *pb)
{
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 = xreallocarray(NULL, len, 4 + 4);
used = utf8_strvis(buf, pb->data, len, flags);
if (pb->size > width || used > width)
strlcpy
|