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85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
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// Copyright (c) 2012 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef BASE_STRINGS_SYS_STRING_CONVERSIONS_H_
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#define BASE_STRINGS_SYS_STRING_CONVERSIONS_H_
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// Provides system-dependent string type conversions for cases where it's
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// necessary to not use ICU. Generally, you should not need this in Chrome,
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// but it is used in some shared code. Dependencies should be minimal.
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#include <stdint.h>
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#include <string>
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#include "base/base_export.h"
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#include "base/strings/string16.h"
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#include "base/strings/string_piece.h"
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#include "build/build_config.h"
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#if defined(OS_MACOSX)
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#include <CoreFoundation/CoreFoundation.h>
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#ifdef __OBJC__
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@class NSString;
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#else
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class NSString;
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#endif
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#endif // OS_MACOSX
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namespace base {
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// Converts between wide and UTF-8 representations of a string. On error, the
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// result is system-dependent.
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BASE_EXPORT std::string SysWideToUTF8(const std::wstring& wide);
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BASE_EXPORT std::wstring SysUTF8ToWide(StringPiece utf8);
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// Converts between wide and the system multi-byte representations of a string.
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// DANGER: This will lose information and can change (on Windows, this can
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// change between reboots).
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BASE_EXPORT std::string SysWideToNativeMB(const std::wstring& wide);
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BASE_EXPORT std::wstring SysNativeMBToWide(StringPiece native_mb);
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// Windows-specific ------------------------------------------------------------
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#if defined(OS_WIN)
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// Converts between 8-bit and wide strings, using the given code page. The
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// code page identifier is one accepted by the Windows function
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// MultiByteToWideChar().
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BASE_EXPORT std::wstring SysMultiByteToWide(StringPiece mb, uint32_t code_page);
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BASE_EXPORT std::string SysWideToMultiByte(const std::wstring& wide,
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uint32_t code_page);
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#endif // defined(OS_WIN)
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// Mac-specific ----------------------------------------------------------------
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#if defined(OS_MACOSX)
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// Converts between STL strings and CFStringRefs/NSStrings.
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// Creates a string, and returns it with a refcount of 1. You are responsible
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// for releasing it. Returns NULL on failure.
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BASE_EXPORT CFStringRef SysUTF8ToCFStringRef(const std::string& utf8);
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BASE_EXPORT CFStringRef SysUTF16ToCFStringRef(const string16& utf16);
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// Same, but returns an autoreleased NSString.
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BASE_EXPORT NSString* SysUTF8ToNSString(const std::string& utf8);
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BASE_EXPORT NSString* SysUTF16ToNSString(const string16& utf16);
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// Converts a CFStringRef to an STL string. Returns an empty string on failure.
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BASE_EXPORT std::string SysCFStringRefToUTF8(CFStringRef ref);
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BASE_EXPORT string16 SysCFStringRefToUTF16(CFStringRef ref);
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// Same, but accepts NSString input. Converts nil NSString* to the appropriate
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// string type of length 0.
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BASE_EXPORT std::string SysNSStringToUTF8(NSString* ref);
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BASE_EXPORT string16 SysNSStringToUTF16(NSString* ref);
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#endif // defined(OS_MACOSX)
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} // namespace base
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#endif // BASE_STRINGS_SYS_STRING_CONVERSIONS_H_
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