Source/WebCore/platform/FileHandle.h

/*
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 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
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#pragma once

#include <wtf/Assertions.h>
#include <wtf/FileSystem.h>

namespace WebCore {

class WEBCORE_EXPORT FileHandle final {
public:
    FileHandle() = default;
    ~FileHandle();
    FileHandle(const String& path, FileSystem::FileOpenMode);
    FileHandle(const String& path, FileSystem::FileOpenMode, OptionSet<FileSystem::FileLockMode>);
    FileHandle(FileHandle&& other);
    FileHandle& operator=(FileHandle&& other);
    FileHandle(const FileHandle&) = delete;
    FileHandle& operator=(const FileHandle&) = delete;
    explicit FileHandle(FileSystem::PlatformFileHandle&&);

    explicit operator bool() const;

    bool open(const String& path, FileSystem::FileOpenMode);
    bool open();
    int read(void* data, int length);
    int write(const void* data, int length);
    bool printf(const char* format, ...) WTF_ATTRIBUTE_PRINTF(2, 3);
    void close();

    FileSystem::PlatformFileHandle handle() const;

    FileHandle isolatedCopy() && { return WTFMove(*this); }

private:
    String m_path;
    FileSystem::FileOpenMode m_mode { FileSystem::FileOpenMode::Read };
    FileSystem::PlatformFileHandle m_fileHandle { FileSystem::invalidPlatformFileHandle };
    OptionSet<FileSystem::FileLockMode> m_lockMode;
    bool m_shouldLock { false };
};

} // namespace WebCore