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