| // Copyright 2008 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "base/strings/sys_string_conversions.h" |
| |
| #include "base/logging.h" |
| #include "base/mac/foundation_util.h" |
| |
| namespace base { |
| |
| namespace { |
| |
| const CFStringEncoding kNarrowStringEncoding = kCFStringEncodingUTF8; |
| |
| template<typename StringType> |
| StringType CFStringToSTLStringWithEncodingT(CFStringRef cfstring, |
| CFStringEncoding encoding) { |
| CFIndex length = CFStringGetLength(cfstring); |
| if (length == 0) { |
| return StringType(); |
| } |
| |
| CFRange whole_string = CFRangeMake(0, length); |
| CFIndex out_size; |
| CFIndex converted = CFStringGetBytes(cfstring, |
| whole_string, |
| encoding, |
| 0, |
| FALSE, |
| NULL, |
| 0, |
| &out_size); |
| if (converted == 0 || out_size == 0) { |
| return StringType(); |
| } |
| |
| DCHECK_EQ(out_size % sizeof(typename StringType::value_type), 0u); |
| typename StringType::size_type elements = |
| out_size * sizeof(UInt8) / sizeof(typename StringType::value_type); |
| StringType out(elements, typename StringType::value_type()); |
| |
| converted = CFStringGetBytes(cfstring, |
| whole_string, |
| encoding, |
| 0, |
| FALSE, |
| reinterpret_cast<UInt8*>(&out[0]), |
| out_size, |
| NULL); |
| if (converted == 0) { |
| return StringType(); |
| } |
| |
| return out; |
| } |
| |
| template<typename StringType> |
| static CFStringRef STLStringToCFStringWithEncodingsT( |
| const StringType& in, |
| CFStringEncoding in_encoding) { |
| typename StringType::size_type in_length = in.length(); |
| if (in_length == 0) { |
| return CFSTR(""); |
| } |
| |
| return CFStringCreateWithBytes(kCFAllocatorDefault, |
| reinterpret_cast<const UInt8*>(in.c_str()), |
| in_length * |
| sizeof(typename StringType::value_type), |
| in_encoding, |
| FALSE); |
| } |
| |
| } // namespace |
| |
| std::string SysCFStringRefToUTF8(CFStringRef ref) { |
| return CFStringToSTLStringWithEncodingT<std::string>(ref, |
| kNarrowStringEncoding); |
| } |
| |
| std::string SysNSStringToUTF8(NSString *nsstring) { |
| if (!nsstring) { |
| return std::string(); |
| } |
| return SysCFStringRefToUTF8(base::mac::NSToCFCast(nsstring)); |
| } |
| |
| CFStringRef SysUTF8ToCFStringRef(const std::string& utf8) { |
| return STLStringToCFStringWithEncodingsT(utf8, kNarrowStringEncoding); |
| } |
| |
| NSString* SysUTF8ToNSString(const std::string& utf8) { |
| return [base::mac::CFToNSCast(SysUTF8ToCFStringRef(utf8)) autorelease]; |
| } |
| |
| } // namespace base |