view tar.py @ 13:808fbe96fd5a

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from galaxy.datatypes.metadata import MetadataElement
import galaxy.util
from galaxy.datatypes.binary import Binary
from galaxy.datatypes import metadata
from galaxy.datatypes.sniff import *
import tarfile

class Tar( Binary ):
    """Class describing a BAM binary file"""
    file_ext = "tar"
    def sniff( self, filename ):
        try:
            if tarfile.is_tarfile(filename):
				return True
        except:
            return False

	def set_peek( self, dataset, is_multi_byte=False ):
        if not dataset.dataset.purged:
            dataset.peek  = "Tar file"
            dataset.blurb = data.nice_size( dataset.get_size() )
        else:
            dataset.peek = 'file does not exist'
            dataset.blurb = 'file purged from disk'

    def display_peek( self, dataset ):
        try:
            return dataset.peek
        except:
            return "Tar file"