1 // Copyright (c) 2012 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_STRINGS_SYS_STRING_CONVERSIONS_H_ 6 #define BASE_STRINGS_SYS_STRING_CONVERSIONS_H_ 7 8 // Provides system-dependent string type conversions for cases where it's 9 // necessary to not use ICU. Generally, you should not need this in Chrome, 10 // but it is used in some shared code. Dependencies should be minimal. 11 12 #include <string> 13 14 #include "base/base_export.h" 15 #include "base/basictypes.h" 16 #include "base/strings/string16.h" 17 #include "base/strings/string_piece.h" 18 19 #if defined(OS_MACOSX) 20 #include <CoreFoundation/CoreFoundation.h> 21 #ifdef __OBJC__ 22 @class NSString; 23 #else 24 class NSString; 25 #endif 26 #endif // OS_MACOSX 27 28 namespace base { 29 30 // Converts between wide and UTF-8 representations of a string. On error, the 31 // result is system-dependent. 32 BASE_EXPORT std::string SysWideToUTF8(const std::wstring& wide); 33 BASE_EXPORT std::wstring SysUTF8ToWide(const StringPiece& utf8); 34 35 // Converts between wide and the system multi-byte representations of a string. 36 // DANGER: This will lose information and can change (on Windows, this can 37 // change between reboots). 38 BASE_EXPORT std::string SysWideToNativeMB(const std::wstring& wide); 39 BASE_EXPORT std::wstring SysNativeMBToWide(const StringPiece& native_mb); 40 41 // Windows-specific ------------------------------------------------------------ 42 43 #if defined(OS_WIN) 44 45 // Converts between 8-bit and wide strings, using the given code page. The 46 // code page identifier is one accepted by the Windows function 47 // MultiByteToWideChar(). 48 BASE_EXPORT std::wstring SysMultiByteToWide(const StringPiece& mb, 49 uint32 code_page); 50 BASE_EXPORT std::string SysWideToMultiByte(const std::wstring& wide, 51 uint32 code_page); 52 53 #endif // defined(OS_WIN) 54 55 // Mac-specific ---------------------------------------------------------------- 56 57 #if defined(OS_MACOSX) 58 59 // Converts between STL strings and CFStringRefs/NSStrings. 60 61 // Creates a string, and returns it with a refcount of 1. You are responsible 62 // for releasing it. Returns NULL on failure. 63 BASE_EXPORT CFStringRef SysUTF8ToCFStringRef(const std::string& utf8); 64 BASE_EXPORT CFStringRef SysUTF16ToCFStringRef(const string16& utf16); 65 66 // Same, but returns an autoreleased NSString. 67 BASE_EXPORT NSString* SysUTF8ToNSString(const std::string& utf8); 68 BASE_EXPORT NSString* SysUTF16ToNSString(const string16& utf16); 69 70 // Converts a CFStringRef to an STL string. Returns an empty string on failure. 71 BASE_EXPORT std::string SysCFStringRefToUTF8(CFStringRef ref); 72 BASE_EXPORT string16 SysCFStringRefToUTF16(CFStringRef ref); 73 74 // Same, but accepts NSString input. Converts nil NSString* to the appropriate 75 // string type of length 0. 76 BASE_EXPORT std::string SysNSStringToUTF8(NSString* ref); 77 BASE_EXPORT string16 SysNSStringToUTF16(NSString* ref); 78 79 #endif // defined(OS_MACOSX) 80 81 } // namespace base 82 83 #endif // BASE_STRINGS_SYS_STRING_CONVERSIONS_H_ 84