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47 lines
1.1 KiB
C++
47 lines
1.1 KiB
C++
#pragma once
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#include <sys/types.h>
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#include <sys/stat.h>
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/*
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Overview of compression:
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______________________
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| Decompressor |
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|----------------------|
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| Compressed file 1 |
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| Compressed file 2 |
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| ... |
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|----------------------|
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| Info about 1 file |
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| Info about 2 file |
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| ... |
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|----------------------|
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| Metadata |
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|______________________|
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*/
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/*
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Metadata contains:
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1) number of files to support multiple file compression
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2) start_of_files_data to know start of files metadata
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3) end of binary to know start of compressed data
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4) uncompressed data size
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*/
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struct MetaData
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{
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size_t number_of_files = 0;
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size_t start_of_files_data = 0;
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};
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/// Information about each file for correct extraction.
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/// Each file data is followed by name of file
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/// with length equals to name_length.
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struct FileData
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{
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size_t start = 0;
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size_t end = 0;
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size_t name_length = 0;
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size_t uncompressed_size = 0;
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mode_t umask = 0;
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};
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