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| const short | DEFLATED = 8 | 
|  | Compression method for the deflate algorithm (the only one currently supported). 
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| const short | NO_COMPRESSION = 0 | 
|  | Compression level for no compression. 
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| const short | BEST_SPEED = 1 | 
|  | Compression level for fastest compression. 
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| const short | BEST_COMPRESSION = 9 | 
|  | Compression level for best compression. 
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| const short | DEFAULT_COMPRESSION = -1 | 
|  | Default compression level. 
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| const short | FILTERED = 1 | 
|  | Compression strategy best used for data consisting mostly of small values with a somewhat random distribution. 
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| const short | HUFFMAN_ONLY = 2 | 
|  | Compression strategy for Huffman coding only. 
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| const short | DEFAULT_STRATEGY = 0 | 
|  | Default compression strategy. 
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| const short | STORED = 0 | 
|  | entry is uncompressed 
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| const short | DEF_MEM_LEVEL = 8 | 
|  | entry is uncompressed 
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| const long | LOCSIG = 0x04034b50 | 
|  | Header Signature: "PK\003\004". 
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| const long | EXTSIG = 0x08074b50 | 
|  | Header Signature: "PK\007\008". 
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| const long | CENSIG = 0x02014b50 | 
|  | Header Signature: "PK\001\002". 
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| const long | ENDSIG = 0x06054b50 | 
|  | Header Signature: "PK\005\006". 
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| const long | SPANSIG = 0x08074b50 | 
|  | Header Signature: "PK\007\008". 
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| const short | LOCHDR = 30 | 
|  | LOC header size in bytes (including signatures) 
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| const short | EXTHDR = 16 | 
|  | EXT header size in bytes (including signatures) 
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| const short | CENHDR = 46 | 
|  | CEN header size in bytes (including signatures) 
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| const short | ENDHDR = 22 | 
|  | END header size in bytes (including signatures) 
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| const short | LOCVER = 4 | 
|  | LOC LOC LOC. 
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| const short | LOCFLG = 6 | 
|  | LOC header field "general purpose bit flags" offset. 
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| const short | LOCHOW = 8 | 
|  | LOC header field "compression method" offset. 
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| const short | LOCTIM = 10 | 
|  | LOC header field "modification time" offset. 
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| const short | LOCCRC = 14 | 
|  | LOC header field "CRC of uncompressed data" offset. 
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| const short | LOCSIZ = 18 | 
|  | LOC header field "compressed data size" offset. 
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| const short | LOCLEN = 22 | 
|  | LOC header field "uncompressed data size" offset. 
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| const short | LOCNAM = 26 | 
|  | LOC header field "filename length" offset. 
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|  | 
| const short | LOCEXT = 28 | 
|  | LOC header field "extra field length" offset. 
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|  | 
| const short | EXTCRC = 4 | 
|  | EXT header field "CRC of uncompressed data" offsets. 
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| const short | EXTSIZ = 8 | 
|  | EXT header field "compressed size" offsets. 
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| const short | EXTLEN = 12 | 
|  | EXT header field "uncompressed size" offsets. 
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|  | 
| const short | CENVEM = 4 | 
|  | CEN header field "version made by" offset. 
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| const short | CENVER = 6 | 
|  | CEN header field "version needed to extract" offset. 
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| const short | CENFLG = 8 | 
|  | CEN header field "general purpose bit flags" offset. 
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|  | 
| const short | CENHOW = 10 | 
|  | CEN header field "compression method" offset. 
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| const short | CENTIM = 12 | 
|  | CEN header field "modification time" offset. 
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| const short | CENDAT = 14 | 
|  | CEN header field "modification time" offset. 
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| const short | CENCRC = 16 | 
|  | CEN header field "CRC of uncompressed data" offset. 
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|  | 
| const short | CENSIZ = 20 | 
|  | CEN header field "compressed size" offset. 
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|  | 
| const short | CENLEN = 24 | 
|  | CEN header field "uncompressed size" offset. 
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|  | 
| const short | CENNAM = 28 | 
|  | CEN header field "length of filename" offset. 
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| const short | CENEXT = 30 | 
|  | CEN header field "length of extra field" offset. 
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|  | 
| const short | CENCOM = 32 | 
|  | CEN header field "file comment length" offset. 
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| const short | CENDSK = 34 | 
|  | CEN header field "disk number start" offset. 
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| const short | CENATT = 36 | 
|  | CEN header field "internal file attributes" offset. 
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| const short | CENATX = 38 | 
|  | CEN header field "external file attributes" offset. 
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|  | 
| const short | CENOFF = 42 | 
|  | CEN header field "offset of local header" offset. 
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|  | 
| const short | ENDSUB = 8 | 
|  | END header field "number of entries on this disk" offset. 
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|  | 
| const short | ENDTOT = 10 | 
|  | END header field "total number of entries" offset. 
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|  | 
| const short | ENDSIZ = 12 | 
|  | END header field "central directory size" offset. 
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|  | 
| const short | ENDOFF = 16 | 
|  | END header field "central directory offset" offset. 
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|  | 
| const short | ENDCOM = 20 | 
|  | END header field "size of zip file comment" offset. 
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|  |