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- // Copyright (c) 2012 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.
- #ifndef BASE_STRINGS_SYS_STRING_CONVERSIONS_H_
- #define BASE_STRINGS_SYS_STRING_CONVERSIONS_H_
- // Provides system-dependent string type conversions for cases where it's
- // necessary to not use ICU. Generally, you should not need this in Chrome,
- // but it is used in some shared code. Dependencies should be minimal.
- #include <stdint.h>
- #include <string>
- #include "base/base_export.h"
- #include "base/strings/string_piece.h"
- #include "build/build_config.h"
- #if BUILDFLAG(IS_APPLE)
- #include <CoreFoundation/CoreFoundation.h>
- #include "base/mac/scoped_cftyperef.h"
- #ifdef __OBJC__
- @class NSString;
- #endif
- #endif // BUILDFLAG(IS_APPLE)
- namespace base {
- // Converts between wide and UTF-8 representations of a string. On error, the
- // result is system-dependent.
- [[nodiscard]] BASE_EXPORT std::string SysWideToUTF8(const std::wstring& wide);
- [[nodiscard]] BASE_EXPORT std::wstring SysUTF8ToWide(StringPiece utf8);
- // Converts between wide and the system multi-byte representations of a string.
- // DANGER: This will lose information and can change (on Windows, this can
- // change between reboots).
- [[nodiscard]] BASE_EXPORT std::string SysWideToNativeMB(
- const std::wstring& wide);
- [[nodiscard]] BASE_EXPORT std::wstring SysNativeMBToWide(StringPiece native_mb);
- // Windows-specific ------------------------------------------------------------
- #if BUILDFLAG(IS_WIN)
- // Converts between 8-bit and wide strings, using the given code page. The
- // code page identifier is one accepted by the Windows function
- // MultiByteToWideChar().
- [[nodiscard]] BASE_EXPORT std::wstring SysMultiByteToWide(StringPiece mb,
- uint32_t code_page);
- [[nodiscard]] BASE_EXPORT std::string SysWideToMultiByte(
- const std::wstring& wide,
- uint32_t code_page);
- #endif // BUILDFLAG(IS_WIN)
- // Mac-specific ----------------------------------------------------------------
- #if BUILDFLAG(IS_APPLE)
- // Converts between strings and CFStringRefs/NSStrings.
- // Converts a string to a CFStringRef. Returns null on failure.
- [[nodiscard]] BASE_EXPORT ScopedCFTypeRef<CFStringRef> SysUTF8ToCFStringRef(
- StringPiece utf8);
- [[nodiscard]] BASE_EXPORT ScopedCFTypeRef<CFStringRef> SysUTF16ToCFStringRef(
- StringPiece16 utf16);
- // Converts a CFStringRef to a string. Returns an empty string on failure. It is
- // not valid to call these with a null `ref`.
- [[nodiscard]] BASE_EXPORT std::string SysCFStringRefToUTF8(CFStringRef ref);
- [[nodiscard]] BASE_EXPORT std::u16string SysCFStringRefToUTF16(CFStringRef ref);
- #ifdef __OBJC__
- // Converts a string to an autoreleased NSString. Returns nil on failure.
- [[nodiscard]] BASE_EXPORT NSString* SysUTF8ToNSString(StringPiece utf8);
- [[nodiscard]] BASE_EXPORT NSString* SysUTF16ToNSString(StringPiece16 utf16);
- // Converts an NSString to a string. Returns an empty string on failure or if
- // `ref` is nil.
- [[nodiscard]] BASE_EXPORT std::string SysNSStringToUTF8(NSString* ref);
- [[nodiscard]] BASE_EXPORT std::u16string SysNSStringToUTF16(NSString* ref);
- #endif // __OBJC__
- #endif // BUILDFLAG(IS_APPLE)
- } // namespace base
- #endif // BASE_STRINGS_SYS_STRING_CONVERSIONS_H_
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