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 3 // found in the LICENSE file. 4 5 #ifndef BASE_I18N_ICU_STRING_CONVERSIONS_H_ 6 #define BASE_I18N_ICU_STRING_CONVERSIONS_H_ 7 8 #include <string> 9 10 #include "base/string16.h" 11 12 namespace base { 13 14 // Defines the error handling modes of UTF16ToCodepage, CodepageToUTF16, 15 // WideToCodepage and CodepageToWide. 16 class OnStringConversionError { 17 public: 18 enum Type { 19 // The function will return failure. The output buffer will be empty. 20 FAIL, 21 22 // The offending characters are skipped and the conversion will proceed as 23 // if they did not exist. 24 SKIP, 25 26 // When converting to Unicode, the offending byte sequences are substituted 27 // by Unicode replacement character (U+FFFD). When converting from Unicode, 28 // this is the same as SKIP. 29 SUBSTITUTE, 30 }; 31 32 private: 33 OnStringConversionError(); 34 }; 35 36 // Names of codepages (charsets) understood by icu. 37 extern const char kCodepageLatin1[]; // a.k.a. ISO 8859-1 38 extern const char kCodepageUTF8[]; 39 extern const char kCodepageUTF16BE[]; 40 extern const char kCodepageUTF16LE[]; 41 42 // Converts between UTF-16 strings and the encoding specified. If the 43 // encoding doesn't exist or the encoding fails (when on_error is FAIL), 44 // returns false. 45 bool UTF16ToCodepage(const string16& utf16, 46 const char* codepage_name, 47 OnStringConversionError::Type on_error, 48 std::string* encoded); 49 bool CodepageToUTF16(const std::string& encoded, 50 const char* codepage_name, 51 OnStringConversionError::Type on_error, 52 string16* utf16); 53 54 // Converts between wide strings and the encoding specified. If the 55 // encoding doesn't exist or the encoding fails (when on_error is FAIL), 56 // returns false. 57 bool WideToCodepage(const std::wstring& wide, 58 const char* codepage_name, 59 OnStringConversionError::Type on_error, 60 std::string* encoded); 61 bool CodepageToWide(const std::string& encoded, 62 const char* codepage_name, 63 OnStringConversionError::Type on_error, 64 std::wstring* wide); 65 66 } // namespace base 67 68 #endif // BASE_I18N_ICU_STRING_CONVERSIONS_H_ 69