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58 lines
1.8 KiB
C++
58 lines
1.8 KiB
C++
#pragma once
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#include "coding/file_reader.hpp"
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#include "coding/file_writer.hpp"
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#include "base/exception.hpp"
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#include <cstddef>
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#include <cstdint>
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#include <functional>
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#include <string>
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#include <utility>
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#include <vector>
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class ZipFileReader : public FileReader
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{
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public:
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struct Delegate
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{
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virtual ~Delegate() = default;
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// When |size| is zero, end of file is reached.
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virtual void OnBlockUnzipped(size_t size, char const * data) = 0;
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virtual void OnStarted() {}
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virtual void OnCompleted() {}
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};
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using ProgressFn = std::function<void(uint64_t, uint64_t)>;
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/// Contains file name inside zip and it's uncompressed size
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using FileList = std::vector<std::pair<std::string, uint32_t>>;
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DECLARE_EXCEPTION(OpenZipException, OpenException);
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DECLARE_EXCEPTION(LocateZipException, OpenException);
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DECLARE_EXCEPTION(InvalidZipException, OpenException);
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ZipFileReader(std::string const & container, std::string const & file,
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uint32_t logPageSize = FileReader::kDefaultLogPageSize,
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uint32_t logPageCount = FileReader::kDefaultLogPageCount);
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/// @note Size() returns compressed file size inside zip
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uint64_t UncompressedSize() const { return m_uncompressedFileSize; }
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/// @warning Can also throw Writer::OpenException and Writer::WriteException
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static void UnzipFile(std::string const & zipContainer, std::string const & fileInZip,
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Delegate & delegate);
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static void UnzipFile(std::string const & zipContainer, std::string const & fileInZip,
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std::string const & outPath);
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static void FilesList(std::string const & zipContainer, FileList & filesList);
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/// Quick version without exceptions
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static bool IsZip(std::string const & zipContainer);
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private:
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uint64_t m_uncompressedFileSize;
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};
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