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
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/**
* WinPR: Windows Portable Runtime
* Unicode Conversion (CRT)
*
* Copyright 2012 Marc-Andre Moreau <marcandre.moreau@gmail.com>
* Copyright 2022 Armin Novak <anovak@thincast.com>
* Copyright 2022 Thincast Technologies GmbH
*
* Licensed 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
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <winpr/config.h>
#include <winpr/assert.h>
#include <errno.h>
#include <wctype.h>
#include <winpr/crt.h>
#include <winpr/error.h>
#include <winpr/print.h>
#ifndef MIN
#define MIN(a, b) (a) < (b) ? (a) : (b)
#endif
#include <unicode/ucnv.h>
#include <unicode/ustring.h>
#include "unicode.h"
#include "../log.h"
#define TAG WINPR_TAG("unicode")
#define UCNV_CONVERT 1
int int_MultiByteToWideChar(UINT CodePage, DWORD dwFlags, LPCSTR lpMultiByteStr, int cbMultiByte,
LPWSTR lpWideCharStr, int cchWideChar)
{
const BOOL isNullTerminated = cbMultiByte < 0;
WINPR_UNUSED(dwFlags);
/* If cbMultiByte is 0, the function fails */
if ((cbMultiByte == 0) || (cbMultiByte < -1))
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
size_t len = 0;
if (isNullTerminated)
len = strlen(lpMultiByteStr) + 1;
else
len = cbMultiByte;
if (len >= INT_MAX)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
cbMultiByte = (int)len;
/*
* if cchWideChar is 0, the function returns the required buffer size
* in characters for lpWideCharStr and makes no use of the output parameter itself.
*/
{
UErrorCode error = U_ZERO_ERROR;
int32_t targetLength = -1;
switch (CodePage)
{
case CP_ACP:
case CP_UTF8:
break;
default:
WLog_ERR(TAG, "Unsupported encoding %u", CodePage);
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
const int32_t targetCapacity = cchWideChar;
#if defined(UCNV_CONVERT)
char* targetStart = (char*)lpWideCharStr;
targetLength =
ucnv_convert("UTF-16LE", "UTF-8", targetStart, targetCapacity * (int32_t)sizeof(WCHAR),
lpMultiByteStr, cbMultiByte, &error);
if (targetLength > 0)
targetLength /= sizeof(WCHAR);
#else
WCHAR* targetStart = lpWideCharStr;
u_strFromUTF8(targetStart, targetCapacity, &targetLength, lpMultiByteStr, cbMultiByte,
&error);
#endif
switch (error)
{
case U_BUFFER_OVERFLOW_ERROR:
if (targetCapacity > 0)
{
cchWideChar = 0;
WLog_ERR(TAG, "insufficient buffer supplied, got %d, required %d",
targetCapacity, targetLength);
SetLastError(ERROR_INSUFFICIENT_BUFFER);
}
else
cchWideChar = targetLength;
break;
case U_STRING_NOT_TERMINATED_WARNING:
cchWideChar = targetLength;
break;
case U_ZERO_ERROR:
cchWideChar = targetLength;
break;
default:
WLog_WARN(TAG, "unexpected ICU error code %s [0x%08" PRIx32 "]", u_errorName(error),
error);
if (U_FAILURE(error))
{
WLog_ERR(TAG, "unexpected ICU error code %s [0x%08" PRIx32 "] is fatal",
u_errorName(error), error);
cchWideChar = 0;
SetLastError(ERROR_NO_UNICODE_TRANSLATION);
}
else
cchWideChar = targetLength;
break;
}
}
return cchWideChar;
}
int int_WideCharToMultiByte(UINT CodePage, DWORD dwFlags, LPCWSTR lpWideCharStr, int cchWideChar,
LPSTR lpMultiByteStr, int cbMultiByte, LPCSTR lpDefaultChar,
LPBOOL lpUsedDefaultChar)
{
/* If cchWideChar is 0, the function fails */
if ((cchWideChar == 0) || (cchWideChar < -1))
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
/* If cchWideChar is -1, the string is null-terminated */
size_t len = 0;
if (cchWideChar == -1)
len = _wcslen(lpWideCharStr) + 1;
else
len = cchWideChar;
if (len >= INT32_MAX)
{
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
cchWideChar = (int)len;
/*
* if cbMultiByte is 0, the function returns the required buffer size
* in bytes for lpMultiByteStr and makes no use of the output parameter itself.
*/
{
UErrorCode error = U_ZERO_ERROR;
int32_t targetLength = -1;
switch (CodePage)
{
case CP_ACP:
case CP_UTF8:
break;
default:
WLog_ERR(TAG, "Unsupported encoding %u", CodePage);
SetLastError(ERROR_INVALID_PARAMETER);
return 0;
}
char* targetStart = lpMultiByteStr;
const int32_t targetCapacity = cbMultiByte;
#if defined(UCNV_CONVERT)
const char* str = (const char*)lpWideCharStr;
targetLength = ucnv_convert("UTF-8", "UTF-16LE", targetStart, targetCapacity, str,
cchWideChar * (int32_t)sizeof(WCHAR), &error);
#else
u_strToUTF8(targetStart, targetCapacity, &targetLength, lpWideCharStr, cchWideChar, &error);
#endif
switch (error)
{
case U_BUFFER_OVERFLOW_ERROR:
if (targetCapacity > 0)
{
WLog_ERR(TAG, "insufficient buffer supplied, got %d, required %d",
targetCapacity, targetLength);
cbMultiByte = 0;
SetLastError(ERROR_INSUFFICIENT_BUFFER);
}
else
cbMultiByte = targetLength;
break;
case U_STRING_NOT_TERMINATED_WARNING:
cbMultiByte = targetLength;
break;
case U_ZERO_ERROR:
cbMultiByte = targetLength;
break;
default:
WLog_WARN(TAG, "unexpected ICU error code %s [0x%08" PRIx32 "]", u_errorName(error),
error);
if (U_FAILURE(error))
{
WLog_ERR(TAG, "unexpected ICU error code %s [0x%08" PRIx32 "] is fatal",
u_errorName(error), error);
cbMultiByte = 0;
SetLastError(ERROR_NO_UNICODE_TRANSLATION);
}
else
cbMultiByte = targetLength;
break;
}
}
return cbMultiByte;
}
|
