cdf Datatype Extension - IPO - Galaxy

binary.py

""" ipo-galaxy/lib/galaxy/datatypes/binary.py """
class Cdf( Binary ):
    """Generic CDF file datatype implementation"""
    file_ext = 'cdf'

    def __init__( self, **kwd ):
        Binary.__init__( self, **kwd )

    def sniff( self, filename ):
        cdf_header = binascii.hexlify('CDF')
        try:
            header = open(filename).read(3)
            if binascii.b2a_hex(header) == cdf_header:
                return True

            header = gzip.open( filename ).read(3)
            if binascii.b2a_hex(header) == cdf_header:
                return True
        except:
            return False

Binary.register_sniffable_binary_format('cdf', 'cdf', Cdf)

datatypes_conf.xml

<!--  ipo-galaxy/config/datatypes_conf.xml -->
// sniffer
<sniffer type="galaxy.datatypes.binary:Cdf" />

// registration
<!-- Metabolomics Data types -->
<datatype extension="cdf" type="galaxy.datatypes.binary:Cdf" display_in_upload="true" description="Metabolights study formats"/>