1 #--------------------------------------------
2 # marc21: file(1) magic for MARC 21 Format
4 # Kevin Ford (kefo@loc.gov)
6 # MARC21 formats are for the representation and communication
7 # of bibliographic and related information in machine-readable
8 # form. For more info, see http://www.loc.gov/marc/
11 # leader position 20-21 must be 45
14 # leader starts with 5 digits, followed by codes specific to MARC format
15 >0 regex/1 (^[0-9]{5})[acdnp][^bhlnqsu-z] MARC21 Bibliographic
16 !:mime application/marc
17 >0 regex/1 (^[0-9]{5})[acdnosx][z] MARC21 Authority
18 !:mime application/marc
19 >0 regex/1 (^[0-9]{5})[cdn][uvxy] MARC21 Holdings
20 !:mime application/marc
21 0 regex/1 (^[0-9]{5})[acdn][w] MARC21 Classification
22 !:mime application/marc
23 >0 regex/1 (^[0-9]{5})[cdn][q] MARC21 Community
24 !:mime application/marc
26 # leader position 22-23, should be "00" but is it?
27 >0 regex/1 (^.{21})([^0]{2}) (non-conforming)
28 !:mime application/marc