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_SYS_STRING_CONVERSIONS_H_ 6 #define BASE_SYS_STRING_CONVERSIONS_H_ 7 #pragma once 8 9 // Provides system-dependent string type conversions for cases where it's 10 // necessary to not use ICU. Generally, you should not need this in Chrome, 11 // but it is used in some shared code. Dependencies should be minimal. 12 13 #include <string> 14 15 #include "base/base_api.h" 16 #include "base/basictypes.h" 17 #include "base/string16.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 class StringPiece; 31 32 // Converts between wide and UTF-8 representations of a string. On error, the 33 // result is system-dependent. 34 BASE_API std::string SysWideToUTF8(const std::wstring& wide); 35 BASE_API std::wstring SysUTF8ToWide(const StringPiece& utf8); 36 37 // Converts between wide and the system multi-byte representations of a string. 38 // DANGER: This will lose information and can change (on Windows, this can 39 // change between reboots). 40 BASE_API std::string SysWideToNativeMB(const std::wstring& wide); 41 BASE_API std::wstring SysNativeMBToWide(const StringPiece& native_mb); 42 43 // Windows-specific ------------------------------------------------------------ 44 45 #if defined(OS_WIN) 46 47 // Converts between 8-bit and wide strings, using the given code page. The 48 // code page identifier is one accepted by the Windows function 49 // MultiByteToWideChar(). 50 BASE_API std::wstring SysMultiByteToWide(const StringPiece& mb, 51 uint32 code_page); 52 BASE_API std::string SysWideToMultiByte(const std::wstring& wide, 53 uint32 code_page); 54 55 #endif // defined(OS_WIN) 56 57 // Mac-specific ---------------------------------------------------------------- 58 59 #if defined(OS_MACOSX) 60 61 // Converts between STL strings and CFStringRefs/NSStrings. 62 63 // Creates a string, and returns it with a refcount of 1. You are responsible 64 // for releasing it. Returns NULL on failure. 65 CFStringRef SysUTF8ToCFStringRef(const std::string& utf8); 66 CFStringRef SysUTF16ToCFStringRef(const string16& utf16); 67 CFStringRef SysWideToCFStringRef(const std::wstring& wide); 68 69 // Same, but returns an autoreleased NSString. 70 NSString* SysUTF8ToNSString(const std::string& utf8); 71 NSString* SysUTF16ToNSString(const string16& utf16); 72 NSString* SysWideToNSString(const std::wstring& wide); 73 74 // Converts a CFStringRef to an STL string. Returns an empty string on failure. 75 std::string SysCFStringRefToUTF8(CFStringRef ref); 76 string16 SysCFStringRefToUTF16(CFStringRef ref); 77 std::wstring SysCFStringRefToWide(CFStringRef ref); 78 79 // Same, but accepts NSString input. Converts nil NSString* to the appropriate 80 // string type of length 0. 81 std::string SysNSStringToUTF8(NSString* ref); 82 string16 SysNSStringToUTF16(NSString* ref); 83 std::wstring SysNSStringToWide(NSString* ref); 84 85 #endif // defined(OS_MACOSX) 86 87 } // namespace base 88 89 #endif // BASE_SYS_STRING_CONVERSIONS_H_ 90