1//
2// ASCIIEncoding.cpp
3//
4// Library: Foundation
5// Package: Text
6// Module: ASCIIEncoding
7//
8// Copyright (c) 2004-2007, Applied Informatics Software Engineering GmbH.
9// and Contributors.
10//
11// SPDX-License-Identifier: BSL-1.0
12//
13
14
15#include "Poco/ASCIIEncoding.h"
16#include "Poco/String.h"
17
18
19namespace Poco {
20
21
22const char* ASCIIEncoding::_names[] =
23{
24 "US-ASCII",
25 "ASCII",
26 NULL
27};
28
29
30const TextEncoding::CharacterMap ASCIIEncoding::_charMap =
31{
32 /* 00 */ 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
33 /* 10 */ 0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
34 /* 20 */ 0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
35 /* 30 */ 0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
36 /* 40 */ 0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
37 /* 50 */ 0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
38 /* 60 */ 0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
39 /* 70 */ 0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
40 /* 80 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
41 /* 90 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
42 /* a0 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
43 /* b0 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
44 /* c0 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
45 /* d0 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
46 /* e0 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
47 /* f0 */ -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
48};
49
50
51ASCIIEncoding::ASCIIEncoding()
52{
53}
54
55
56ASCIIEncoding::~ASCIIEncoding()
57{
58}
59
60
61const char* ASCIIEncoding::canonicalName() const
62{
63 return _names[0];
64}
65
66
67bool ASCIIEncoding::isA(const std::string& encodingName) const
68{
69 for (const char** name = _names; *name; ++name)
70 {
71 if (Poco::icompare(encodingName, *name) == 0)
72 return true;
73 }
74 return false;
75}
76
77
78const TextEncoding::CharacterMap& ASCIIEncoding::characterMap() const
79{
80 return _charMap;
81}
82
83
84int ASCIIEncoding::convert(const unsigned char* bytes) const
85{
86 return _charMap[*bytes];
87}
88
89
90int ASCIIEncoding::convert(int ch, unsigned char* bytes, int length) const
91{
92 if (ch >= 0 && ch <= 127)
93 {
94 if (bytes && length >= 1)
95 *bytes = (unsigned char) ch;
96 return 1;
97 }
98 else return 0;
99}
100
101
102int ASCIIEncoding::queryConvert(const unsigned char* bytes, int length) const
103{
104 if (1 <= length)
105 return _charMap [*bytes];
106 else
107 return -1;
108}
109
110
111int ASCIIEncoding::sequenceLength(const unsigned char* /*bytes*/, int /*length*/) const
112{
113 return 1;
114}
115
116
117} // namespace Poco
118