from FileMetadataExtractor import FileMetadataExtractor
import mimetypes
from RSS import ns

"""
File metadata extractor which sniffs the MIME type of the file to set dc:format.
"""
class FileMimeExtractor(FileMetadataExtractor):
    def __init__(self):
        FileMetadataExtractor.__init__(self)
        mimetypes.init()
    
    def extract(self, f, item):
        mime = mimetypes.guess_type(f, False)[0]
        if mime:
            item[(ns.dc, 'format')] = mime