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08e4b3cf | 1 | /** @file\r |
2 | Language related HII Library implementation.\r | |
3 | \r | |
4 | Copyright (c) 2006 - 2008, Intel Corporation<BR>\r | |
5 | All rights reserved. This program and the accompanying materials\r | |
6 | are licensed and made available under the terms and conditions of the BSD License\r | |
7 | which accompanies this distribution. The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php\r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | \r | |
16 | #include "InternalHiiLib.h"\r | |
17 | \r | |
18 | /**\r | |
19 | Get next language from language code list (with separator ';').\r | |
20 | \r | |
21 | If LangCode is NULL, then ASSERT.\r | |
22 | If Lang is NULL, then ASSERT.\r | |
23 | \r | |
24 | @param LangCode On input: point to first language in the list. On\r | |
25 | output: point to next language in the list, or\r | |
26 | NULL if no more language in the list.\r | |
27 | @param Lang The first language in the list.\r | |
28 | \r | |
29 | **/\r | |
30 | VOID\r | |
31 | EFIAPI\r | |
32 | HiiLibGetNextLanguage (\r | |
33 | IN OUT CHAR8 **LangCode,\r | |
34 | OUT CHAR8 *Lang\r | |
35 | )\r | |
36 | {\r | |
37 | UINTN Index;\r | |
38 | CHAR8 *StringPtr;\r | |
39 | \r | |
40 | ASSERT (LangCode != NULL);\r | |
41 | ASSERT (*LangCode != NULL);\r | |
42 | ASSERT (Lang != NULL);\r | |
43 | \r | |
44 | Index = 0;\r | |
45 | StringPtr = *LangCode;\r | |
46 | while (StringPtr[Index] != 0 && StringPtr[Index] != ';') {\r | |
47 | Index++;\r | |
48 | }\r | |
49 | \r | |
50 | CopyMem (Lang, StringPtr, Index);\r | |
51 | Lang[Index] = 0;\r | |
52 | \r | |
53 | if (StringPtr[Index] == ';') {\r | |
54 | Index++;\r | |
55 | }\r | |
56 | *LangCode = StringPtr + Index;\r | |
57 | }\r | |
58 | \r | |
59 | \r | |
60 | /**\r | |
61 | This function returns the list of supported languages, in the format specified\r | |
62 | in UEFI specification Appendix M.\r | |
63 | \r | |
64 | If HiiHandle is not a valid Handle in the default HII database, then ASSERT.\r | |
65 | \r | |
66 | @param HiiHandle The HII package list handle.\r | |
67 | \r | |
68 | @retval !NULL The supported languages.\r | |
69 | @retval NULL If Supported Languages can not be retrived.\r | |
70 | \r | |
71 | **/\r | |
72 | CHAR8 *\r | |
73 | EFIAPI\r | |
74 | HiiLibGetSupportedLanguages (\r | |
75 | IN EFI_HII_HANDLE HiiHandle\r | |
76 | )\r | |
77 | {\r | |
78 | EFI_STATUS Status;\r | |
79 | UINTN BufferSize;\r | |
80 | CHAR8 *LanguageString;\r | |
81 | \r | |
82 | ASSERT (IsHiiHandleRegistered (HiiHandle));\r | |
83 | //\r | |
84 | // Collect current supported Languages for given HII handle\r | |
85 | // First try allocate 4K buffer to store the current supported languages.\r | |
86 | //\r | |
87 | BufferSize = 0x1000;\r | |
88 | LanguageString = AllocateZeroPool (BufferSize);\r | |
89 | if (LanguageString == NULL) {\r | |
90 | return NULL;\r | |
91 | }\r | |
92 | \r | |
93 | Status = mHiiStringProt->GetLanguages (mHiiStringProt, HiiHandle, LanguageString, &BufferSize);\r | |
94 | \r | |
95 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
96 | FreePool (LanguageString);\r | |
97 | LanguageString = AllocateZeroPool (BufferSize);\r | |
98 | if (LanguageString == NULL) {\r | |
99 | return NULL;\r | |
100 | }\r | |
101 | \r | |
102 | Status = mHiiStringProt->GetLanguages (mHiiStringProt, HiiHandle, LanguageString, &BufferSize);\r | |
103 | }\r | |
104 | \r | |
105 | if (EFI_ERROR (Status)) {\r | |
106 | LanguageString = NULL;\r | |
107 | }\r | |
108 | \r | |
109 | return LanguageString;\r | |
110 | }\r | |
111 | \r | |
112 | \r | |
113 | /**\r | |
114 | This function returns the number of supported languages on HiiHandle.\r | |
115 | \r | |
116 | If HiiHandle is not a valid Handle in the default HII database, then ASSERT.\r | |
117 | If not enough resource to complete the operation, then ASSERT.\r | |
118 | \r | |
119 | @param HiiHandle The HII package list handle.\r | |
120 | \r | |
121 | @return The number of supported languages.\r | |
122 | \r | |
123 | **/\r | |
124 | UINT16\r | |
125 | EFIAPI\r | |
126 | HiiLibGetSupportedLanguageNumber (\r | |
127 | IN EFI_HII_HANDLE HiiHandle\r | |
128 | )\r | |
129 | {\r | |
130 | CHAR8 *Languages;\r | |
131 | CHAR8 *LanguageString;\r | |
132 | UINT16 LangNumber;\r | |
133 | CHAR8 Lang[RFC_3066_ENTRY_SIZE];\r | |
134 | \r | |
135 | Languages = HiiLibGetSupportedLanguages (HiiHandle);\r | |
136 | if (Languages == NULL) {\r | |
137 | return 0;\r | |
138 | }\r | |
139 | \r | |
140 | LangNumber = 0;\r | |
141 | LanguageString = Languages;\r | |
142 | while (*LanguageString != 0) {\r | |
143 | HiiLibGetNextLanguage (&LanguageString, Lang);\r | |
144 | LangNumber++;\r | |
145 | }\r | |
146 | FreePool (Languages);\r | |
147 | \r | |
148 | return LangNumber;\r | |
149 | }\r | |
150 | \r | |
151 | /**\r | |
152 | This function returns the list of supported 2nd languages, in the format specified\r | |
153 | in UEFI specification Appendix M.\r | |
154 | \r | |
155 | If HiiHandle is not a valid Handle in the default HII database, then ASSERT.\r | |
156 | If not enough resource to complete the operation, then ASSERT.\r | |
157 | \r | |
158 | @param HiiHandle The HII package list handle.\r | |
159 | @param FirstLanguage Pointer to language name buffer.\r | |
160 | \r | |
161 | @return The supported languages.\r | |
162 | \r | |
163 | **/\r | |
164 | CHAR8 *\r | |
165 | EFIAPI\r | |
166 | HiiLibGetSupportedSecondaryLanguages (\r | |
167 | IN EFI_HII_HANDLE HiiHandle,\r | |
168 | IN CONST CHAR8 *FirstLanguage\r | |
169 | )\r | |
170 | {\r | |
171 | EFI_STATUS Status;\r | |
172 | UINTN BufferSize;\r | |
173 | CHAR8 *LanguageString;\r | |
174 | \r | |
175 | ASSERT (HiiHandle != NULL);\r | |
176 | ASSERT (IsHiiHandleRegistered (HiiHandle));\r | |
177 | //\r | |
178 | // Collect current supported 2nd Languages for given HII handle\r | |
179 | // First try allocate 4K buffer to store the current supported 2nd languages.\r | |
180 | //\r | |
181 | BufferSize = 0x1000;\r | |
182 | LanguageString = AllocateZeroPool (BufferSize);\r | |
183 | if (LanguageString == NULL) {\r | |
184 | return NULL;\r | |
185 | }\r | |
186 | \r | |
187 | Status = mHiiStringProt->GetSecondaryLanguages (mHiiStringProt, HiiHandle, FirstLanguage, LanguageString, &BufferSize);\r | |
188 | \r | |
189 | if (Status == EFI_BUFFER_TOO_SMALL) {\r | |
190 | FreePool (LanguageString);\r | |
191 | LanguageString = AllocateZeroPool (BufferSize);\r | |
192 | if (LanguageString == NULL) {\r | |
193 | return NULL;\r | |
194 | }\r | |
195 | \r | |
196 | Status = mHiiStringProt->GetSecondaryLanguages (mHiiStringProt, HiiHandle, FirstLanguage, LanguageString, &BufferSize);\r | |
197 | }\r | |
198 | \r | |
199 | if (EFI_ERROR (Status)) {\r | |
200 | LanguageString = NULL;\r | |
201 | }\r | |
202 | \r | |
203 | return LanguageString;\r | |
204 | }\r | |
205 | \r | |
206 | \r | |
11e92503 | 207 | /**\r |
208 | Determine what is the current language setting. The space reserved for Lang\r | |
209 | must be at least RFC_3066_ENTRY_SIZE bytes;\r | |
210 | \r | |
211 | If Lang is NULL, then ASSERT.\r | |
212 | \r | |
213 | @param Lang Pointer of system language. Lang will always be filled with \r | |
214 | a valid RFC 3066 language string. If "PlatformLang" is not\r | |
215 | set in the system, the default language specifed by PcdUefiVariableDefaultPlatformLang\r | |
216 | is returned.\r | |
217 | \r | |
218 | @return EFI_SUCCESS If the EFI Variable with "PlatformLang" is set and return in Lang.\r | |
219 | @return EFI_NOT_FOUND If the EFI Variable with "PlatformLang" is not set, but a valid default language is return in Lang.\r | |
220 | \r | |
221 | **/\r | |
222 | EFI_STATUS\r | |
223 | EFIAPI\r | |
224 | GetCurrentLanguage (\r | |
225 | OUT CHAR8 *Lang\r | |
226 | )\r | |
227 | {\r | |
228 | EFI_STATUS Status;\r | |
229 | UINTN Size;\r | |
230 | \r | |
231 | ASSERT (Lang != NULL);\r | |
232 | \r | |
233 | //\r | |
234 | // Get current language setting\r | |
235 | //\r | |
236 | Size = RFC_3066_ENTRY_SIZE;\r | |
237 | Status = gRT->GetVariable (\r | |
238 | L"PlatformLang",\r | |
239 | &gEfiGlobalVariableGuid,\r | |
240 | NULL,\r | |
241 | &Size,\r | |
242 | Lang\r | |
243 | );\r | |
244 | \r | |
245 | if (EFI_ERROR (Status)) {\r | |
246 | AsciiStrCpy (Lang, (CHAR8 *) PcdGetPtr (PcdUefiVariableDefaultPlatformLang));\r | |
247 | }\r | |
248 | \r | |
249 | return Status;\r | |
250 | }\r | |
251 | \r | |
252 | \r | |
253 | \r |