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https://github.com/RGBCube/serenity
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2716a9e2d7
I also added a generator cache to FileHandle. This way, multiple reads to a generated file (i.e in a synthfs) can transparently handle multiple calls to read() without the contents changing between calls. The cache is discarded at EOF (or when the FileHandle is destroyed.)
51 lines
1.1 KiB
C++
51 lines
1.1 KiB
C++
#pragma once
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#include "VirtualFileSystem.h"
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#include <AK/ByteBuffer.h>
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class FileHandle {
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public:
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explicit FileHandle(RetainPtr<VirtualFileSystem::Node>&&);
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~FileHandle();
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Unix::off_t seek(Unix::off_t, int whence);
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Unix::ssize_t read(byte* buffer, Unix::size_t count);
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int stat(Unix::stat*);
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bool hasDataAvailableForRead();
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ssize_t get_dir_entries(byte* buffer, Unix::size_t);
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ByteBuffer readEntireFile();
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String absolutePath() const;
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bool isDirectory() const;
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VirtualFileSystem::Node* vnode() { return m_vnode.ptr(); }
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#ifdef SERENITY
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int fd() const { return m_fd; }
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void setFD(int fd) { m_fd = fd; }
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bool isBlocking() const { return m_isBlocking; }
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void setBlocking(bool b) { m_isBlocking = b; }
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#endif
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ByteBuffer& generatorCache() { return m_generatorCache; }
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private:
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friend class VirtualFileSystem;
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RetainPtr<VirtualFileSystem::Node> m_vnode;
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Unix::off_t m_currentOffset { 0 };
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ByteBuffer m_generatorCache;
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#ifdef SERENITY
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int m_fd { -1 };
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bool m_isBlocking { true };
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#endif
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};
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