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718e3744 | 1 | /* |
2 | * Buffering to output and input. | |
3 | * Copyright (C) 1998 Kunihiro Ishiguro | |
4 | * | |
5 | * This file is part of GNU Zebra. | |
6 | * | |
7 | * GNU Zebra is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License as published | |
9 | * by the Free Software Foundation; either version 2, or (at your | |
10 | * option) any later version. | |
11 | * | |
12 | * GNU Zebra is distributed in the hope that it will be useful, but | |
13 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
15 | * General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License | |
18 | * along with GNU Zebra; see the file COPYING. If not, write to the | |
19 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | * Boston, MA 02111-1307, USA. | |
21 | */ | |
22 | ||
23 | #ifndef _ZEBRA_BUFFER_H | |
24 | #define _ZEBRA_BUFFER_H | |
25 | ||
26 | /* Buffer master. */ | |
27 | struct buffer | |
28 | { | |
29 | /* Data list. */ | |
30 | struct buffer_data *head; | |
31 | struct buffer_data *tail; | |
32 | ||
33 | /* Current allocated data. */ | |
34 | unsigned long alloc; | |
35 | ||
36 | /* Total length of buffer. */ | |
37 | unsigned long size; | |
38 | ||
39 | /* For allocation. */ | |
40 | struct buffer_data *unused_head; | |
41 | struct buffer_data *unused_tail; | |
42 | ||
43 | /* Current total length of this buffer. */ | |
44 | unsigned long length; | |
45 | }; | |
46 | ||
47 | /* Data container. */ | |
48 | struct buffer_data | |
49 | { | |
50 | struct buffer *parent; | |
51 | struct buffer_data *next; | |
52 | struct buffer_data *prev; | |
53 | ||
54 | /* Acctual data stream. */ | |
55 | unsigned char *data; | |
56 | ||
57 | /* Current pointer. */ | |
58 | unsigned long cp; | |
59 | ||
60 | /* Start pointer. */ | |
61 | unsigned long sp; | |
62 | }; | |
63 | ||
64 | /* Buffer prototypes. */ | |
65 | struct buffer *buffer_new (size_t); | |
5228ad27 | 66 | int buffer_write (struct buffer *, void *, size_t); |
718e3744 | 67 | void buffer_free (struct buffer *); |
68 | char *buffer_getstr (struct buffer *); | |
69 | int buffer_putc (struct buffer *, u_char); | |
5228ad27 | 70 | int buffer_putstr (struct buffer *, char *); |
718e3744 | 71 | void buffer_reset (struct buffer *); |
72 | int buffer_flush_all (struct buffer *, int); | |
73 | int buffer_flush_vty_all (struct buffer *, int, int, int); | |
74 | int buffer_flush_window (struct buffer *, int, int, int, int, int); | |
75 | int buffer_empty (struct buffer *); | |
76 | ||
77 | #endif /* _ZEBRA_BUFFER_H */ |