85 lines
3.6 KiB
JavaScript
85 lines
3.6 KiB
JavaScript
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module.exports = {
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/* The local file header */
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LOCHDR : 30, // LOC header size
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LOCSIG : 0x04034b50, // "PK\003\004"
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LOCVER : 4, // version needed to extract
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LOCFLG : 6, // general purpose bit flag
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LOCHOW : 8, // compression method
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LOCTIM : 10, // modification time (2 bytes time, 2 bytes date)
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LOCCRC : 14, // uncompressed file crc-32 value
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LOCSIZ : 18, // compressed size
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LOCLEN : 22, // uncompressed size
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LOCNAM : 26, // filename length
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LOCEXT : 28, // extra field length
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/* The Data descriptor */
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EXTSIG : 0x08074b50, // "PK\007\008"
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EXTHDR : 16, // EXT header size
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EXTCRC : 4, // uncompressed file crc-32 value
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EXTSIZ : 8, // compressed size
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EXTLEN : 12, // uncompressed size
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/* The central directory file header */
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CENHDR : 46, // CEN header size
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CENSIG : 0x02014b50, // "PK\001\002"
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CENVEM : 4, // version made by
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CENVER : 6, // version needed to extract
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CENFLG : 8, // encrypt, decrypt flags
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CENHOW : 10, // compression method
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CENTIM : 12, // modification time (2 bytes time, 2 bytes date)
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CENCRC : 16, // uncompressed file crc-32 value
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CENSIZ : 20, // compressed size
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CENLEN : 24, // uncompressed size
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CENNAM : 28, // filename length
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CENEXT : 30, // extra field length
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CENCOM : 32, // file comment length
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CENDSK : 34, // volume number start
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CENATT : 36, // internal file attributes
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CENATX : 38, // external file attributes (host system dependent)
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CENOFF : 42, // LOC header offset
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/* The entries in the end of central directory */
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ENDHDR : 22, // END header size
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ENDSIG : 0x06054b50, // "PK\005\006"
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ENDSUB : 8, // number of entries on this disk
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ENDTOT : 10, // total number of entries
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ENDSIZ : 12, // central directory size in bytes
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ENDOFF : 16, // offset of first CEN header
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ENDCOM : 20, // zip file comment length
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/* Compression methods */
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STORED : 0, // no compression
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SHRUNK : 1, // shrunk
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REDUCED1 : 2, // reduced with compression factor 1
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REDUCED2 : 3, // reduced with compression factor 2
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REDUCED3 : 4, // reduced with compression factor 3
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REDUCED4 : 5, // reduced with compression factor 4
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IMPLODED : 6, // imploded
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// 7 reserved
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DEFLATED : 8, // deflated
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ENHANCED_DEFLATED: 9, // enhanced deflated
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PKWARE : 10,// PKWare DCL imploded
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// 11 reserved
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BZIP2 : 12, // compressed using BZIP2
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// 13 reserved
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LZMA : 14, // LZMA
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// 15-17 reserved
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IBM_TERSE : 18, // compressed using IBM TERSE
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IBM_LZ77 : 19, //IBM LZ77 z
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/* General purpose bit flag */
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FLG_ENC : 0, // encripted file
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FLG_COMP1 : 1, // compression option
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FLG_COMP2 : 2, // compression option
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FLG_DESC : 4, // data descriptor
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FLG_ENH : 8, // enhanced deflation
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FLG_STR : 16, // strong encryption
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FLG_LNG : 1024, // language encoding
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FLG_MSK : 4096, // mask header values
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/* Load type */
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FILE : 0,
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BUFFER : 1,
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NONE : 2
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};
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