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| 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2009 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef BASE_I18N_STRING_CONVERSIONS_H_ | 5 #ifndef BASE_UTF_STRING_CONVERSIONS_H_ |
| 6 #define BASE_I18N_STRING_CONVERSIONS_H_ | 6 #define BASE_UTF_STRING_CONVERSIONS_H_ |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 | 9 |
| 10 #include "base/string16.h" | 10 #include "base/string16.h" |
| 11 #include "base/string_piece.h" | 11 #include "base/string_piece.h" |
| 12 | 12 |
| 13 // These convert between UTF-8, -16, and -32 strings. They are potentially slow, | 13 // These convert between UTF-8, -16, and -32 strings. They are potentially slow, |
| 14 // so avoid unnecessary conversions. The low-level versions return a boolean | 14 // so avoid unnecessary conversions. The low-level versions return a boolean |
| 15 // indicating whether the conversion was 100% valid. In this case, it will still | 15 // indicating whether the conversion was 100% valid. In this case, it will still |
| 16 // do the best it can and put the result in the output buffer. The versions that | 16 // do the best it can and put the result in the output buffer. The versions that |
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| 44 // porting whatever module uses wstring and the conversion is being used as a | 44 // porting whatever module uses wstring and the conversion is being used as a |
| 45 // stopcock. This makes it easy to grep for the ones that should be removed. | 45 // stopcock. This makes it easy to grep for the ones that should be removed. |
| 46 #if defined(OS_WIN) | 46 #if defined(OS_WIN) |
| 47 # define WideToUTF16Hack | 47 # define WideToUTF16Hack |
| 48 # define UTF16ToWideHack | 48 # define UTF16ToWideHack |
| 49 #else | 49 #else |
| 50 # define WideToUTF16Hack WideToUTF16 | 50 # define WideToUTF16Hack WideToUTF16 |
| 51 # define UTF16ToWideHack UTF16ToWide | 51 # define UTF16ToWideHack UTF16ToWide |
| 52 #endif | 52 #endif |
| 53 | 53 |
| 54 // Defines the error handling modes of UTF16ToCodepage, CodepageToUTF16, | 54 #endif // BASE_UTF_STRING_CONVERSIONS_H_ |
| 55 // WideToCodepage and CodepageToWide. | |
| 56 class OnStringUtilConversionError { | |
| 57 public: | |
| 58 enum Type { | |
| 59 // The function will return failure. The output buffer will be empty. | |
| 60 FAIL, | |
| 61 | |
| 62 // The offending characters are skipped and the conversion will proceed as | |
| 63 // if they did not exist. | |
| 64 SKIP, | |
| 65 | |
| 66 // When converting to Unicode, the offending byte sequences are substituted | |
| 67 // by Unicode replacement character (U+FFFD). When converting from Unicode, | |
| 68 // this is the same as SKIP. | |
| 69 SUBSTITUTE, | |
| 70 }; | |
| 71 | |
| 72 private: | |
| 73 OnStringUtilConversionError(); | |
| 74 }; | |
| 75 | |
| 76 // Converts between UTF-16 strings and the encoding specified. If the | |
| 77 // encoding doesn't exist or the encoding fails (when on_error is FAIL), | |
| 78 // returns false. | |
| 79 bool UTF16ToCodepage(const string16& utf16, | |
| 80 const char* codepage_name, | |
| 81 OnStringUtilConversionError::Type on_error, | |
| 82 std::string* encoded); | |
| 83 | |
| 84 bool CodepageToUTF16(const std::string& encoded, | |
| 85 const char* codepage_name, | |
| 86 OnStringUtilConversionError::Type on_error, | |
| 87 string16* utf16); | |
| 88 | |
| 89 // Converts between wide strings and the encoding specified. If the | |
| 90 // encoding doesn't exist or the encoding fails (when on_error is FAIL), | |
| 91 // returns false. | |
| 92 bool WideToCodepage(const std::wstring& wide, | |
| 93 const char* codepage_name, | |
| 94 OnStringUtilConversionError::Type on_error, | |
| 95 std::string* encoded); | |
| 96 bool CodepageToWide(const std::string& encoded, | |
| 97 const char* codepage_name, | |
| 98 OnStringUtilConversionError::Type on_error, | |
| 99 std::wstring* wide); | |
| 100 | |
| 101 #endif // BASE_I18N_STRING_CONVERSIONS_H_ | |
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