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0958c10f88
* Fix header magic test. * Rewrite code to not use so many filesystem calls. * Add many more error checks. * Add missing NUL filetype. * octalToDecimal(header.size) has been fixed to use fixed 12 characters range instead of endless string. * Add many optimizations. * Fix possible signed overflows with int, use the unisgned u64 type instead which allows for greater files as well. * Log errors.
38 lines
779 B
C++
38 lines
779 B
C++
#pragma once
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#include <map>
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struct TARHeader
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{
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char name[100];
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char dontcare[24];
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char size[12];
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char mtime[12];
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char chksum[8];
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char filetype;
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char linkname[100];
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char magic[6];
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char dontcare2[82];
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char prefix[155];
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char padding[12];
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};
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class tar_object
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{
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const fs::file& m_file;
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usz largest_offset = 0; // We store the largest offset so we can continue to scan from there.
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std::map<std::string, std::pair<u64, TARHeader>> m_map; // Maps path to offset of file data and its header
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TARHeader read_header(u64 offset) const;
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public:
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tar_object(const fs::file& file);
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std::vector<std::string> get_filenames();
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fs::file get_file(const std::string& path);
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bool extract(std::string path, std::string ignore = ""); // extract all files in archive to path
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};
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