47 lines
1.5 KiB
C++
47 lines
1.5 KiB
C++
// ZIP archive extractor. Only supports deflation and store (no compression).
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// File_Extractor 1.0.0
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#ifndef ZIP_EXTRACTOR_H
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#define ZIP_EXTRACTOR_H
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#include "File_Extractor.h"
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#include "Zlib_Inflater.h"
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class Zip_Extractor : public File_Extractor
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{
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public:
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Zip_Extractor();
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virtual ~Zip_Extractor();
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protected:
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virtual blargg_err_t open_path_v();
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virtual blargg_err_t open_v();
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virtual void close_v();
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virtual void clear_file_v();
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virtual blargg_err_t next_v();
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virtual blargg_err_t rewind_v();
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virtual fex_pos_t tell_arc_v() const;
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virtual blargg_err_t seek_arc_v(fex_pos_t);
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virtual blargg_err_t extract_v(void *, int);
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private:
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blargg_vector<char> catalog;
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int catalog_begin; // offset of first catalog entry in file (to detect corruption)
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int catalog_pos; // position of current entry in catalog
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int raw_remain; // bytes remaining to be read from zip file for current file
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unsigned crc; // ongoing CRC of extracted bytes
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unsigned correct_crc;
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bool file_deflated;
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Zlib_Inflater buf;
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blargg_err_t fill_buf(int offset, int buf_size, int initial_read);
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blargg_err_t update_info(bool advance_first);
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blargg_err_t first_read(int count);
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void reorder_entry_header(int offset);
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static blargg_err_t inflater_read(void *data, void *out, int *count);
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};
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#endif
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