mirror of https://github.com/libAthena/athena.git
66 lines
1.5 KiB
C++
66 lines
1.5 KiB
C++
#pragma once
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#include <cstdio>
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#include <memory>
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#include <string>
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#include "athena/IStreamReader.hpp"
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#include "athena/Types.hpp"
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namespace athena::io {
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class FileReader : public IStreamReader {
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public:
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explicit FileReader(std::string_view filename, atInt32 cacheSize = (32 * 1024), bool globalErr = true);
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explicit FileReader(std::wstring_view filename, atInt32 cacheSize = (32 * 1024), bool globalErr = true);
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~FileReader() override;
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std::string filename() const {
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#if _WIN32
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return utility::wideToUtf8(m_filename);
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#else
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return m_filename;
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#endif
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}
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std::wstring wfilename() const {
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#if _WIN32
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return m_filename;
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#else
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return utility::utf8ToWide(m_filename);
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#endif
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}
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void open();
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void close();
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bool isOpen() const { return m_fileHandle != nullptr; }
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void seek(atInt64 pos, SeekOrigin origin = SeekOrigin::Current) override;
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atUint64 position() const override;
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atUint64 length() const override;
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atUint64 readUBytesToBuf(void* buf, atUint64 len) override;
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void setCacheSize(const atInt32 blockSize);
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#if _WIN32
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using HandleType = void*;
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#else
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using HandleType = FILE*;
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#endif
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HandleType _fileHandle() { return m_fileHandle; }
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protected:
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#if _WIN32
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std::wstring m_filename;
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#else
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std::string m_filename;
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#endif
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HandleType m_fileHandle;
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atUint64 m_fileSize;
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std::unique_ptr<atUint8[]> m_cacheData;
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atInt32 m_blockSize;
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atInt32 m_curBlock;
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atUint64 m_offset;
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bool m_globalErr;
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};
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} // namespace athena::io
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