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
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "sal/config.h"
#include <cstddef>
#include "rtl/textcvt.h"
#include "sal/types.h"
#include "context.hxx"
#include "converter.hxx"
#include "convertsinglebytetobmpunicode.hxx"
#include "unichars.hxx"
sal_Size rtl_textenc_convertSingleByteToBmpUnicode(
void const * data, SAL_UNUSED_PARAMETER void *, sal_Char const * srcBuf,
sal_Size srcBytes, sal_Unicode * destBuf, sal_Size destChars,
sal_uInt32 flags, sal_uInt32 * info, sal_Size * srcCvtBytes)
{
sal_Unicode const * map = static_cast<
rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
data)->byteToUnicode;
sal_uInt32 infoFlags = 0;
sal_Size converted = 0;
sal_Unicode * destBufPtr = destBuf;
sal_Unicode * destBufEnd = destBuf + destChars;
for (; converted < srcBytes; ++converted) {
bool undefined = true;
sal_Char b = *srcBuf++;
sal_Unicode c = map[static_cast< sal_uInt8 >(b)];
if (c == 0xFFFF) {
goto bad_input;
}
if (destBufEnd - destBufPtr < 1) {
goto no_output;
}
*destBufPtr++ = c;
continue;
bad_input:
switch (sal::detail::textenc::handleBadInputTextToUnicodeConversion(
undefined, false, b, flags, &destBufPtr, destBufEnd,
&infoFlags))
{
case sal::detail::textenc::BAD_INPUT_STOP:
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
continue;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--srcBuf;
infoFlags |= RTL_TEXTTOUNICODE_INFO_DESTBUFFERTOSMALL;
break;
}
if (info != nullptr) {
*info = infoFlags;
}
if (srcCvtBytes != nullptr) {
*srcCvtBytes = converted;
}
return destBufPtr - destBuf;
}
sal_Size rtl_textenc_convertBmpUnicodeToSingleByte(
void const * data, void * context,
sal_Unicode const * srcBuf, sal_Size srcChars, sal_Char * destBuf,
sal_Size destBytes, sal_uInt32 flags, sal_uInt32 * info,
sal_Size * srcCvtChars)
{
std::size_t entries = static_cast<
rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
data)->unicodeToByteEntries;
rtl::textenc::BmpUnicodeToSingleByteRange const * ranges = static_cast<
rtl::textenc::BmpUnicodeToSingleByteConverterData const * >(
data)->unicodeToByte;
sal_Unicode highSurrogate = 0;
sal_uInt32 infoFlags = 0;
sal_Size converted = 0;
sal_Char * destBufPtr = destBuf;
sal_Char * destBufEnd = destBuf + destBytes;
if (context != nullptr) {
highSurrogate = static_cast< ImplUnicodeToTextContext * >(context)->
m_nHighSurrogate;
}
for (; converted < srcChars; ++converted) {
bool undefined = true;
sal_uInt32 c = *srcBuf++;
if (highSurrogate == 0) {
if (ImplIsHighSurrogate(c)) {
highSurrogate = static_cast< sal_Unicode >(c);
continue;
}
} else if (ImplIsLowSurrogate(c)) {
c = ImplCombineSurrogates(highSurrogate, c);
} else {
undefined = false;
goto bad_input;
}
if (ImplIsLowSurrogate(c) || ImplIsNoncharacter(c)) {
undefined = false;
goto bad_input;
}
// Linearly searching through the ranges if probably fastest, assuming
// that most converted characters belong to the ASCII subset:
for (std::size_t i = 0; i < entries; ++i) {
if (c < ranges[i].unicode) {
break;
} else if (c <= sal::static_int_cast< sal_uInt32 >(
ranges[i].unicode + ranges[i].range))
{
if (destBufEnd - destBufPtr < 1) {
goto no_output;
}
*destBufPtr++ = static_cast< sal_Char >(
ranges[i].byte + (c - ranges[i].unicode));
goto done;
}
}
goto bad_input;
done:
highSurrogate = 0;
continue;
bad_input:
switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
undefined, c, flags, &destBufPtr, destBufEnd, &infoFlags, nullptr,
0, nullptr))
{
case sal::detail::textenc::BAD_INPUT_STOP:
highSurrogate = 0;
break;
case sal::detail::textenc::BAD_INPUT_CONTINUE:
highSurrogate = 0;
continue;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
goto no_output;
}
break;
no_output:
--srcBuf;
infoFlags |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
if (highSurrogate != 0
&& ((infoFlags
& (RTL_UNICODETOTEXT_INFO_ERROR
| RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL))
== 0))
{
if ((flags & RTL_UNICODETOTEXT_FLAGS_FLUSH) != 0) {
infoFlags |= RTL_UNICODETOTEXT_INFO_SRCBUFFERTOSMALL;
} else {
switch (sal::detail::textenc::handleBadInputUnicodeToTextConversion(
false, 0, flags, &destBufPtr, destBufEnd, &infoFlags, nullptr,
0, nullptr))
{
case sal::detail::textenc::BAD_INPUT_STOP:
case sal::detail::textenc::BAD_INPUT_CONTINUE:
highSurrogate = 0;
break;
case sal::detail::textenc::BAD_INPUT_NO_OUTPUT:
infoFlags |= RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL;
break;
}
}
}
if (context != nullptr) {
static_cast< ImplUnicodeToTextContext * >(context)->m_nHighSurrogate
= highSurrogate;
}
if (info != nullptr) {
*info = infoFlags;
}
if (srcCvtChars != nullptr) {
*srcCvtChars = converted;
}
return destBufPtr - destBuf;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
|
