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 <stdint.h> 13 14 #include <string> 15 16 #include "base/base_export.h" 17 #include "base/strings/string16.h" 18 #include "base/strings/string_piece.h" 19 #include "build/build_config.h" 20 21 #if defined(OS_MACOSX) 22 #include <CoreFoundation/CoreFoundation.h> 23 #ifdef __OBJC__ 24 @class NSString; 25 #else 26 class NSString; 27 #endif 28 #endif // OS_MACOSX 29 30 namespace base { 31 32 // Converts between wide and UTF-8 representations of a string. On error, the 33 // result is system-dependent. 34 BASE_EXPORT std::string SysWideToUTF8(const std::wstring& wide); 35 BASE_EXPORT 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_EXPORT std::string SysWideToNativeMB(const std::wstring& wide); 41 BASE_EXPORT 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_EXPORT std::wstring SysMultiByteToWide(const StringPiece& mb, 51 uint32_t code_page); 52 BASE_EXPORT std::string SysWideToMultiByte(const std::wstring& wide, 53 uint32_t 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 BASE_EXPORT CFStringRef SysUTF8ToCFStringRef(const std::string& utf8); 66 BASE_EXPORT CFStringRef SysUTF16ToCFStringRef(const string16& utf16); 67 68 // Same, but returns an autoreleased NSString. 69 BASE_EXPORT NSString* SysUTF8ToNSString(const std::string& utf8); 70 BASE_EXPORT NSString* SysUTF16ToNSString(const string16& utf16); 71 72 // Converts a CFStringRef to an STL string. Returns an empty string on failure. 73 BASE_EXPORT std::string SysCFStringRefToUTF8(CFStringRef ref); 74 BASE_EXPORT string16 SysCFStringRefToUTF16(CFStringRef ref); 75 76 // Same, but accepts NSString input. Converts nil NSString* to the appropriate 77 // string type of length 0. 78 BASE_EXPORT std::string SysNSStringToUTF8(NSString* ref); 79 BASE_EXPORT string16 SysNSStringToUTF16(NSString* ref); 80 81 #endif // defined(OS_MACOSX) 82 83 } // namespace base 84 85 #endif // BASE_STRINGS_SYS_STRING_CONVERSIONS_H_ 86
