1#-------------------------------------------- 2# marc21: file(1) magic for MARC 21 Format 3# 4# Kevin Ford (kefo@loc.gov) 5# 6# MARC21 formats are for the representation and communication 7# of bibliographic and related information in machine-readable 8# form. For more info, see https://www.loc.gov/marc/ 9 10 11# leader position 20-21 must be 45 12# and 22-23 also 00 so far, but we check that later. 1320 string 45 14>0 search/2048 \x1e 15 16# leader starts with 5 digits, followed by codes specific to MARC format 17>>0 regex/1l (^[0-9]{5})[acdnp][^bhlnqsu-z] MARC21 Bibliographic 18!:mime application/marc 19>>0 regex/1l (^[0-9]{5})[acdnosx][z] MARC21 Authority 20!:mime application/marc 21>>0 regex/1l (^[0-9]{5})[cdn][uvxy] MARC21 Holdings 22!:mime application/marc 23>>0 regex/1l (^[0-9]{5})[acdn][w] MARC21 Classification 24!:mime application/marc 25>>0 regex/1l (^[0-9]{5})[cdn][q] MARC21 Community 26!:mime application/marc 27 28# leader position 22-23, should be "00" but is it? 29>>0 regex/1l (^.{21})([^0]{2}) (non-conforming) 30!:mime application/marc 31