1 // Copyright (c) 2006-2008 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_SYS_STRING_CONVERSIONS_H_ 6 #define BASE_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 #include "base/basictypes.h" 14 #include "base/string16.h" 15 16 #if defined(OS_MACOSX) 17 #include <CoreFoundation/CoreFoundation.h> 18 #ifdef __OBJC__ 19 @class NSString; 20 #else 21 class NSString; 22 #endif 23 #endif // OS_MACOSX 24 25 namespace base { 26 27 class StringPiece; 28 29 // Converts between wide and UTF-8 representations of a string. On error, the 30 // result is system-dependent. 31 std::string SysWideToUTF8(const std::wstring& wide); 32 std::wstring SysUTF8ToWide(const StringPiece& utf8); 33 34 // Converts between wide and the system multi-byte representations of a string. 35 // DANGER: This will lose information and can change (on Windows, this can 36 // change between reboots). 37 std::string SysWideToNativeMB(const std::wstring& wide); 38 std::wstring SysNativeMBToWide(const StringPiece& native_mb); 39 40 // Windows-specific ------------------------------------------------------------ 41 42 #if defined(OS_WIN) 43 44 // Converts between 8-bit and wide strings, using the given code page. The 45 // code page identifier is one accepted by the Windows function 46 // MultiByteToWideChar(). 47 std::wstring SysMultiByteToWide(const StringPiece& mb, uint32 code_page); 48 std::string SysWideToMultiByte(const std::wstring& wide, uint32 code_page); 49 50 #endif // defined(OS_WIN) 51 52 // Mac-specific ---------------------------------------------------------------- 53 54 #if defined(OS_MACOSX) 55 56 // Converts between STL strings and CFStringRefs/NSStrings. 57 58 // Creates a string, and returns it with a refcount of 1. You are responsible 59 // for releasing it. Returns NULL on failure. 60 CFStringRef SysUTF8ToCFStringRef(const std::string& utf8); 61 CFStringRef SysUTF16ToCFStringRef(const string16& utf16); 62 CFStringRef SysWideToCFStringRef(const std::wstring& wide); 63 64 // Same, but returns an autoreleased NSString. 65 NSString* SysUTF8ToNSString(const std::string& utf8); 66 NSString* SysUTF16ToNSString(const string16& utf16); 67 NSString* SysWideToNSString(const std::wstring& wide); 68 69 // Converts a CFStringRef to an STL string. Returns an empty string on failure. 70 std::string SysCFStringRefToUTF8(CFStringRef ref); 71 string16 SysCFStringRefToUTF16(CFStringRef ref); 72 std::wstring SysCFStringRefToWide(CFStringRef ref); 73 74 // Same, but accepts NSString input. Converts nil NSString* to the appropriate 75 // string type of length 0. 76 std::string SysNSStringToUTF8(NSString* ref); 77 string16 SysNSStringToUTF16(NSString* ref); 78 std::wstring SysNSStringToWide(NSString* ref); 79 80 #endif // defined(OS_MACOSX) 81 82 } // namespace base 83 84 #endif // BASE_SYS_STRING_CONVERSIONS_H_ 85