1 // Copyright (c) 2011 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/i18n/base_i18n_export.h" 11 #include "base/i18n/i18n_constants.h" 12 #include "base/strings/string16.h" 13 #include "base/strings/string_piece.h" 14 15 namespace base { 16 17 // Defines the error handling modes of UTF16ToCodepage and CodepageToUTF16. 18 class OnStringConversionError { 19 public: 20 enum Type { 21 // The function will return failure. The output buffer will be empty. 22 FAIL, 23 24 // The offending characters are skipped and the conversion will proceed as 25 // if they did not exist. 26 SKIP, 27 28 // When converting to Unicode, the offending byte sequences are substituted 29 // by Unicode replacement character (U+FFFD). When converting from Unicode, 30 // this is the same as SKIP. 31 SUBSTITUTE, 32 }; 33 34 private: 35 OnStringConversionError() = delete; 36 }; 37 38 // Converts between UTF-16 strings and the encoding specified. If the 39 // encoding doesn't exist or the encoding fails (when on_error is FAIL), 40 // returns false. 41 BASE_I18N_EXPORT bool UTF16ToCodepage(base::StringPiece16 utf16, 42 const char* codepage_name, 43 OnStringConversionError::Type on_error, 44 std::string* encoded); 45 BASE_I18N_EXPORT bool CodepageToUTF16(base::StringPiece encoded, 46 const char* codepage_name, 47 OnStringConversionError::Type on_error, 48 string16* utf16); 49 50 // Converts from any codepage to UTF-8 and ensures the resulting UTF-8 is 51 // normalized. 52 BASE_I18N_EXPORT bool ConvertToUtf8AndNormalize(base::StringPiece text, 53 const std::string& charset, 54 std::string* result); 55 56 } // namespace base 57 58 #endif // BASE_I18N_ICU_STRING_CONVERSIONS_H_ 59