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
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
|
/** @file
Unicode Collation Support component that hides the trivial difference of Unicode Collation
and Unicode collation 2 Protocol.
Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include "Fat.h"
EFI_UNICODE_COLLATION_PROTOCOL *mUnicodeCollationInterface = NULL;
/**
Worker function to initialize Unicode Collation support.
It tries to locate Unicode Collation (2) protocol and matches it with current
platform language code.
@param AgentHandle The handle used to open Unicode Collation (2) protocol.
@param ProtocolGuid The pointer to Unicode Collation (2) protocol GUID.
@param VariableName The name of the RFC 4646 or ISO 639-2 language variable.
@param DefaultLanguage The default language in case the RFC 4646 or ISO 639-2 language is absent.
@retval EFI_SUCCESS The Unicode Collation (2) protocol has been successfully located.
@retval Others The Unicode Collation (2) protocol has not been located.
**/
EFI_STATUS
InitializeUnicodeCollationSupportWorker (
IN EFI_HANDLE AgentHandle,
IN EFI_GUID *ProtocolGuid,
IN CONST CHAR16 *VariableName,
IN CONST CHAR8 *DefaultLanguage
)
{
EFI_STATUS ReturnStatus;
EFI_STATUS Status;
UINTN NumHandles;
UINTN Index;
EFI_HANDLE *Handles;
EFI_UNICODE_COLLATION_PROTOCOL *Uci;
BOOLEAN Iso639Language;
CHAR8 *Language;
CHAR8 *BestLanguage;
Status = gBS->LocateHandleBuffer (
ByProtocol,
ProtocolGuid,
NULL,
&NumHandles,
&Handles
);
if (EFI_ERROR (Status)) {
return Status;
}
Iso639Language = (BOOLEAN) (ProtocolGuid == &gEfiUnicodeCollationProtocolGuid);
GetEfiGlobalVariable2 (VariableName, (VOID**) &Language, NULL);
ReturnStatus = EFI_UNSUPPORTED;
for (Index = 0; Index < NumHandles; Index++) {
//
// Open Unicode Collation Protocol
//
Status = gBS->OpenProtocol (
Handles[Index],
ProtocolGuid,
(VOID **) &Uci,
AgentHandle,
NULL,
EFI_OPEN_PROTOCOL_GET_PROTOCOL
);
if (EFI_ERROR (Status)) {
continue;
}
//
// Find the best matching matching language from the supported languages
// of Unicode Collation (2) protocol.
//
BestLanguage = GetBestLanguage (
Uci->SupportedLanguages,
Iso639Language,
(Language == NULL) ? "" : Language,
DefaultLanguage,
NULL
);
if (BestLanguage != NULL) {
FreePool (BestLanguage);
mUnicodeCollationInterface = Uci;
ReturnStatus = EFI_SUCCESS;
break;
}
}
if (Language != NULL) {
FreePool (Language);
}
FreePool (Handles);
return ReturnStatus;
}
/**
Initialize Unicode Collation support.
It tries to locate Unicode Collation 2 protocol and matches it with current
platform language code. If for any reason the first attempt fails, it then tries to
use Unicode Collation Protocol.
@param AgentHandle The handle used to open Unicode Collation (2) protocol.
@retval EFI_SUCCESS The Unicode Collation (2) protocol has been successfully located.
@retval Others The Unicode Collation (2) protocol has not been located.
**/
EFI_STATUS
InitializeUnicodeCollationSupport (
IN EFI_HANDLE AgentHandle
)
{
EFI_STATUS Status;
Status = EFI_UNSUPPORTED;
//
// First try to use RFC 4646 Unicode Collation 2 Protocol.
//
Status = InitializeUnicodeCollationSupportWorker (
AgentHandle,
&gEfiUnicodeCollation2ProtocolGuid,
L"PlatformLang",
(CONST CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang)
);
//
// If the attempt to use Unicode Collation 2 Protocol fails, then we fall back
// on the ISO 639-2 Unicode Collation Protocol.
//
if (EFI_ERROR (Status)) {
Status = InitializeUnicodeCollationSupportWorker (
AgentHandle,
&gEfiUnicodeCollationProtocolGuid,
L"Lang",
(CONST CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultLang)
);
}
return Status;
}
/**
Performs a case-insensitive comparison of two Null-terminated Unicode strings.
@param S1 A pointer to a Null-terminated Unicode string.
@param S2 A pointer to a Null-terminated Unicode string.
@retval 0 S1 is equivalent to S2.
@retval >0 S1 is lexically greater than S2.
@retval <0 S1 is lexically less than S2.
**/
INTN
FatStriCmp (
IN CHAR16 *S1,
IN CHAR16 *S2
)
{
ASSERT (StrSize (S1) != 0);
ASSERT (StrSize (S2) != 0);
ASSERT (mUnicodeCollationInterface != NULL);
return mUnicodeCollationInterface->StriColl (
mUnicodeCollationInterface,
S1,
S2
);
}
/**
Uppercase a string.
@param String The string which will be upper-cased.
**/
VOID
FatStrUpr (
IN OUT CHAR16 *String
)
{
ASSERT (StrSize (String) != 0);
ASSERT (mUnicodeCollationInterface != NULL);
mUnicodeCollationInterface->StrUpr (mUnicodeCollationInterface, String);
}
/**
Lowercase a string
@param String The string which will be lower-cased.
**/
VOID
FatStrLwr (
IN OUT CHAR16 *String
)
{
ASSERT (StrSize (String) != 0);
ASSERT (mUnicodeCollationInterface != NULL);
mUnicodeCollationInterface->StrLwr (mUnicodeCollationInterface, String);
}
/**
Convert FAT string to unicode string.
@param FatSize The size of FAT string.
@param Fat The FAT string.
@param String The unicode string.
@return None.
**/
VOID
FatFatToStr (
IN UINTN FatSize,
IN CHAR8 *Fat,
OUT CHAR16 *String
)
{
ASSERT (Fat != NULL);
ASSERT (String != NULL);
ASSERT (((UINTN) String & 0x01) == 0);
ASSERT (mUnicodeCollationInterface != NULL);
mUnicodeCollationInterface->FatToStr (mUnicodeCollationInterface, FatSize, Fat, String);
}
/**
Convert unicode string to Fat string.
@param String The unicode string.
@param FatSize The size of the FAT string.
@param Fat The FAT string.
@retval TRUE Convert successfully.
@retval FALSE Convert error.
**/
BOOLEAN
FatStrToFat (
IN CHAR16 *String,
IN UINTN FatSize,
OUT CHAR8 *Fat
)
{
ASSERT (Fat != NULL);
ASSERT (StrSize (String) != 0);
ASSERT (mUnicodeCollationInterface != NULL);
return mUnicodeCollationInterface->StrToFat (
mUnicodeCollationInterface,
String,
FatSize,
Fat
);
}
|
