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R3600/invenio/legacy/websubmit/file_metadata_plugins/extractor_plugin.py
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extractor_plugin.py
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## This file is part of Invenio.
## Copyright (C) 2010, 2011 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
WebSubmit Metadata Plugin - This is the generic metadata extraction
plugin. Contains methods to extract metadata from many kinds of files.
Dependencies: extractor
"""
__plugin_version__ = "WebSubmit File Metadata Plugin API 1.0"
import extractor
from invenio.bibdocfile import decompose_file
def can_read_local(inputfile):
"""
Checks if inputfile is among metadata-readable file types
@param inputfile: path to the image
@type inputfile: string
@rtype: boolean
@return: True if file can be processed
"""
# Check file type (0 base, 1 name, 2 ext)
ext = decompose_file(inputfile)[2]
return ext.lower() in ['.html', '.doc', '.ps', '.xls', '.ppt',
'.ps', '.sxw', '.sdw', '.dvi', '.man', '.flac',
'.mp3', '.nsf', '.sid', '.ogg', '.wav', '.png',
'.deb', '.rpm', '.tar.gz', '.zip', '.elf',
'.s3m', '.xm', '.it', '.flv', '.real', '.avi',
'.mpeg', '.qt', '.asf']
def read_metadata_local(inputfile, verbose):
"""
Metadata extraction from many kind of files
@param inputfile: path to the image
@type inputfile: string
@param verbose: verbosity
@type verbose: int
@rtype: dict
@return: dictionary with metadata
"""
# Initialization dict
meta_info = {}
# Extraction
xtract = extractor.Extractor()
# Get the keywords
keys = xtract.extract(inputfile)
# Loop to dump data to the dict
for keyword_type, keyword in keys:
meta_info[keyword_type.encode('iso-8859-1')] = \
keyword.encode('iso-8859-1')
# Return the dictionary
return meta_info
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