Fix leak in format_get_command.
[tmux-openbsd.git] / paste.c
blob2e89a5ef528a38beae8c196816c9d42804ad9758
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>
20 #include <sys/time.h>
22 #include <stdlib.h>
23 #include <string.h>
24 #include <vis.h>
26 #include "tmux.h"
29 * Stack of paste buffers. Note that paste buffer data is not necessarily a C
30 * string!
33 /* Return each item of the stack in turn. */
34 struct paste_buffer *
35 paste_walk_stack(struct paste_stack *ps, u_int *idx)
37 struct paste_buffer *pb;
39 pb = paste_get_index(ps, *idx);
40 (*idx)++;
41 return (pb);
44 /* Get the top item on the stack. */
45 struct paste_buffer *
46 paste_get_top(struct paste_stack *ps)
48 if (ARRAY_LENGTH(ps) == 0)
49 return (NULL);
50 return (ARRAY_FIRST(ps));
53 /* Get an item by its index. */
54 struct paste_buffer *
55 paste_get_index(struct paste_stack *ps, u_int idx)
57 if (idx >= ARRAY_LENGTH(ps))
58 return (NULL);
59 return (ARRAY_ITEM(ps, idx));
62 /* Free the top item on the stack. */
63 int
64 paste_free_top(struct paste_stack *ps)
66 struct paste_buffer *pb;
68 if (ARRAY_LENGTH(ps) == 0)
69 return (-1);
71 pb = ARRAY_FIRST(ps);
72 ARRAY_REMOVE(ps, 0);
74 free(pb->data);
75 free(pb);
77 return (0);
80 /* Free an item by index. */
81 int
82 paste_free_index(struct paste_stack *ps, u_int idx)
84 struct paste_buffer *pb;
86 if (idx >= ARRAY_LENGTH(ps))
87 return (-1);
89 pb = ARRAY_ITEM(ps, idx);
90 ARRAY_REMOVE(ps, idx);
92 free(pb->data);
93 free(pb);
95 return (0);
99 * Add an item onto the top of the stack, freeing the bottom if at limit. Note
100 * that the caller is responsible for allocating data.
102 void
103 paste_add(struct paste_stack *ps, char *data, size_t size, u_int limit)
105 struct paste_buffer *pb;
107 if (size == 0)
108 return;
110 while (ARRAY_LENGTH(ps) >= limit) {
111 pb = ARRAY_LAST(ps);
112 free(pb->data);
113 free(pb);
114 ARRAY_TRUNC(ps, 1);
117 pb = xmalloc(sizeof *pb);
118 ARRAY_INSERT(ps, 0, pb);
120 pb->data = data;
121 pb->size = size;
126 * Replace an item on the stack. Note that the caller is responsible for
127 * allocating data.
130 paste_replace(struct paste_stack *ps, u_int idx, char *data, size_t size)
132 struct paste_buffer *pb;
134 if (size == 0)
135 return (0);
137 if (idx >= ARRAY_LENGTH(ps))
138 return (-1);
140 pb = ARRAY_ITEM(ps, idx);
141 free(pb->data);
143 pb->data = data;
144 pb->size = size;
146 return (0);
149 /* Convert a buffer into a visible string. */
150 char *
151 paste_print(struct paste_buffer *pb, size_t width)
153 char *buf;
154 size_t len, used;
156 if (width < 3)
157 width = 3;
158 buf = xmalloc(width * 4 + 1);
160 len = pb->size;
161 if (len > width)
162 len = width;
164 used = strvisx(buf, pb->data, len, VIS_OCTAL|VIS_TAB|VIS_NL);
165 if (pb->size > width || used > width)
166 strlcpy(buf + width - 3, "...", 4);
168 return (buf);
171 /* Paste into a window pane, filtering '\n' according to separator. */
172 void
173 paste_send_pane (struct paste_buffer *pb, struct window_pane *wp,
174 const char *sep, int bracket)
176 const char *data = pb->data, *end = data + pb->size, *lf;
177 size_t seplen;
179 if (bracket)
180 bufferevent_write(wp->event, "\033[200~", 6);
182 seplen = strlen(sep);
183 while ((lf = memchr(data, '\n', end - data)) != NULL) {
184 if (lf != data)
185 bufferevent_write(wp->event, data, lf - data);
186 bufferevent_write(wp->event, sep, seplen);
187 data = lf + 1;
190 if (end != data)
191 bufferevent_write(wp->event, data, end - data);
193 if (bracket)
194 bufferevent_write(wp->event, "\033[201~", 6);