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
|
/*
Copyright (C) 2015-2020, Dirk Krause
SPDX-License-Identifier: BSD-3-Clause
*/
/*
WARNING: This file was generated by the dkct program (see
http://dktools.sourceforge.net/ for details).
Changes you make here will be lost if dkct is run again!
You should modify the original source and run dkct on it.
Original source: dk4ahd.ctr
*/
#ifndef DK4AHD_H_INCLUDED
/** Avoid multiple inclusions. */
#define DK4AHD_H_INCLUDED 1
#line 10 "dk4ahd.ctr"
/** @file dk4ahd.h ASCIIHex decoder.
First initialize the decoder using the dk4ahex_dec_init() function.
Add text characters using the dk4ahex_dec_add() function.
The function returns DK4_EDSTM_ACCEPT if the text character was successfully
stored in the decoder without completing a byte.
The DK4_EDSTM_FINISHED return code indicates that a byte was finished, use
dk4ahex_output() to retrieve it.
The DK4_EDSTM_STOP return code indicates that an end of data (EOD) marker
was found.
After feeding all text characters into the decoder use dk4ahex_finish()
to check whether there is an unprocessed half-byte stored.
If the function returns DK4_EDSTM_FINISHED, use dk4ahex_output() to
retrieve the final byte.
Note: The call to dk4ahex_finish() is also necessary after
obtaining DK4_EDSTM_STOP from dk4ahex_dec_add().
*/
#ifndef DK4CONF_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4conf.h"
#else
#include <dktools-4/dk4conf.h>
#endif
#endif
#ifndef DK4ERROR_H_INCLUDED
#if DK4_BUILDING_DKTOOLS4
#include "dk4error.h"
#else
#include <dktools-4/dk4error.h>
#endif
#endif
/** ASCII-Hex decoder.
*/
typedef struct {
int cpos; /**< Current position. */
unsigned char obyte; /**< Output byte. */
} dk4_ahex_dec_t;
#ifdef __cplusplus
extern "C" {
#endif
/** Initialize decoder.
@param dec Decoder to initialize.
@param erp Error report, may be NULL.
*/
void
dk4ahex_dec_init(dk4_ahex_dec_t *dec, dk4_er_t *erp);
/** Add text character to decoder.
@param dec Decoder.
@param tc Text character to add.
@param erp Error report, may be NULL.
@return Action to take:
- DK4_EDSTM_ACCEPT<br>
if the text was saved in the decoder, no action necessary.
- DK4_EDSTM_FINISHED<br>
if a byte was completed, use dk4ahex_dec_output() to retrieve
the byte.
- DK4_EDSTM_STOP<br>
if the end of data (EOD) marker was detected.
Use dk4ahex_finish() to check whether there is still data
in the decoder.
- DK4_EDSTM_ERROR<br>
if an error occured.
*/
int
dk4ahex_dec_add(dk4_ahex_dec_t *dec, char tc, dk4_er_t *erp);
/** Check for final byte.
@param dec Decoder.
@param erp Error report, may be NULL.
@return Action to take, one from:
- DK4_EDSTM_ACCEPT<br>
if there is no action necessary.
- DK4_EDSTM_FINISHED<br>
if there is data available, use dk4ahex_dec_output() to retrieve
the byte.
- DK4_EDSTM_ERROR<br>
if an error occured.
*/
int
dk4ahex_finish(dk4_ahex_dec_t *dec, dk4_er_t *erp);
/** Retrieve current decoder content.
@param dec Decoder.
@param erp Error report, may be NULL.
@return The current byte stored in the decoder.
*/
unsigned char
dk4ahex_output(dk4_ahex_dec_t const *dec, dk4_er_t *erp);
#ifdef __cplusplus
}
#endif
#endif
|