def __init__(self):
"""
Initialize all available classes, and bind them to local variables
* accepts: None
* returns: None
"""
self.__fmp = FileMetadataParser()
self.__hmp = HachoirMetadataParser()
self.__emp = EnzymeMetadataParser()
self.__mmp = MutagenMetadataParser()
self.__xmp = ExifMetadataParser()
class MetadataParser():
"""
This class wraps around all available parsers, and has functions
to massage this data into a single dictionary suitable for ES usage
"""
def __init__(self):
"""
Initialize all available classes, and bind them to local variables
* accepts: None
* returns: None
"""
self.__fmp = FileMetadataParser()
self.__hmp = HachoirMetadataParser()
self.__emp = EnzymeMetadataParser()
self.__mmp = MutagenMetadataParser()
self.__xmp = ExifMetadataParser()
def _update(self, meta, xtra_meta):
for key in xtra_meta.keys():
if key not in meta.keys():
meta[key] = xtra_meta[key]
elif key in ['audio', 'video']:
meta[key] = merge_av_meta_dict(meta[key], xtra_meta[key])
else:
meta[key].update(xtra_meta[key])
return meta
def extract(self, meta, full_path):
"""
Extract metadata from a file
* accepts:
meta: Dictionary with already available metadata
full_path: Full path to the file from which to extract metadata
* returns:
Merged metadata dictionary or
meta on error
"""
types = None
types = mimetypes.guess_type(full_path)
if types and types[0] != None:
meta['file']['mime'] = types[0]
else:
return meta
xtra_meta = {}
xtra_meta = self.__fmp.extract(full_path)
if xtra_meta:
meta = self._update(meta, xtra_meta)
if meta['file']['mime'] in enzyme_mimes:
xtra_meta = self.__emp.extract(full_path)
elif meta['file']['mime'] in mutagen_mimes:
xtra_meta = self.__mmp.extract(full_path)
elif meta['file']['mime'] in exif_mimes:
xtra_meta = self.__xmp.extract(full_path)
if not xtra_meta and meta['file']['mime'] in hachoir_mapper.keys():
xtra_meta = self.__hmp.extract(
full_path, 0.5, hachoir_mapper[meta['file']['mime']]
)
if xtra_meta:
meta = self._update(meta, xtra_meta)
return meta
