Commit | Line | Data |
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ee393574 | 1 | /* -*-c-*- |
ee393574 | 2 | * |
3 | * Hexadecimal encoding and decoding | |
4 | * | |
5 | * (c) 2001 Straylight/Edgeware | |
6 | */ | |
7 | ||
d4efbcd9 | 8 | /*----- Licensing notice --------------------------------------------------* |
ee393574 | 9 | * |
10 | * This file is part of the mLib utilities library. | |
11 | * | |
12 | * mLib is free software; you can redistribute it and/or modify | |
13 | * it under the terms of the GNU Library General Public License as | |
14 | * published by the Free Software Foundation; either version 2 of the | |
15 | * License, or (at your option) any later version. | |
d4efbcd9 | 16 | * |
ee393574 | 17 | * mLib is distributed in the hope that it will be useful, |
18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | * GNU Library General Public License for more details. | |
d4efbcd9 | 21 | * |
ee393574 | 22 | * You should have received a copy of the GNU Library General Public |
23 | * License along with mLib; if not, write to the Free | |
24 | * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, | |
25 | * MA 02111-1307, USA. | |
26 | */ | |
27 | ||
ee393574 | 28 | #ifndef MLIB_HEX_H |
29 | #define MLIB_HEX_H | |
30 | ||
31 | #ifdef __cplusplus | |
32 | extern "C" { | |
33 | #endif | |
34 | ||
35 | /*----- Header files ------------------------------------------------------*/ | |
36 | ||
e39fbd14 MW |
37 | #ifndef MLIB_CODEC_H |
38 | # include "codec.h" | |
39 | #endif | |
40 | ||
dd3c57bc MW |
41 | #ifndef MLIB_DSTR_H |
42 | # include "dstr.h" | |
43 | #endif | |
ee393574 | 44 | |
45 | /*----- Data structures ---------------------------------------------------*/ | |
46 | ||
47 | typedef struct hex_ctx { | |
48 | unsigned long acc; /* Accumulator for output data */ | |
49 | unsigned qsz; /* Length of data queued */ | |
50 | unsigned lnlen; /* Length of the current line */ | |
51 | const char *indent; /* Newline-and-indent string */ | |
52 | unsigned maxline; /* Maximum permitted line length */ | |
53 | } hex_ctx; | |
54 | ||
55 | /*----- Functions provided ------------------------------------------------*/ | |
56 | ||
57 | /* --- @hex_encode@ --- * | |
58 | * | |
59 | * Arguments: @hex_ctx *ctx@ = pointer to a context block | |
60 | * @const void *p@ = pointer to a source buffer | |
61 | * @size_t sz@ = size of the source buffer | |
62 | * @dstr *d@ = pointer to destination string | |
63 | * | |
64 | * Returns: --- | |
65 | * | |
66 | * Use: Encodes a binary string in hex. | |
67 | */ | |
68 | ||
69 | extern void hex_encode(hex_ctx */*ctx*/, const void */*p*/, size_t /*sz*/, | |
70 | dstr */*d*/); | |
71 | ||
72 | /* --- @hex_decode@ --- * | |
73 | * | |
74 | * Arguments: @hex_ctx *ctx@ = pointer to a context block | |
75 | * @const void *p@ = pointer to a source buffer | |
76 | * @size_t sz@ = size of the source buffer | |
77 | * @dstr *d@ = pointer to destination string | |
78 | * | |
79 | * Returns: --- | |
80 | * | |
81 | * Use: Decodes a binary string in hex. Pass in a null source | |
82 | * pointer when you thing you've finished. | |
83 | */ | |
84 | ||
85 | extern void hex_decode(hex_ctx */*ctx*/, const void */*p*/, size_t /*sz*/, | |
86 | dstr */*d*/); | |
87 | ||
88 | /* --- @hex_init@ --- * | |
89 | * | |
90 | * Arguments: @hex_ctx *ctx@ = pointer to context block to initialize | |
91 | * | |
92 | * Returns: --- | |
93 | * | |
94 | * Use: Initializes a hex context properly. | |
95 | */ | |
96 | ||
97 | extern void hex_init(hex_ctx */*ctx*/); | |
98 | ||
236f657b MW |
99 | /*----- Codec object interface --------------------------------------------*/ |
100 | ||
101 | extern const codec_class hex_class; | |
102 | ||
ee393574 | 103 | /*----- That's all, folks -------------------------------------------------*/ |
104 | ||
105 | #ifdef __cplusplus | |
106 | } | |
107 | #endif | |
108 | ||
109 | #endif |