Page MenuHomec4science
Files F90832194

bibfield_marcreader.py
No OneTemporary
Actions

File Metadata

Created
Tue, Nov 5, 04:30

bibfield_marcreader.py
View Options

# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2004, 2005, 2006, 2007, 2008, 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.
"""
"""
__revision__ = "$Id$"
from invenio.bibfield_jsonreader import JsonReader
from invenio.bibfield_utils import CoolDict, CoolList
class MarcReader(JsonReader):
"""
Reader class that understands MARC21 as base format
"""
@staticmethod
def split_blob(blob, schema):
"""
Splits the blob using <record.*?>.*?</record> as pattern.
Note 1: Taken from invenio.bibrecord:create_records
Note 2: Use the DOTALL flag to include newlines.
"""
import re
regex = re.compile('<record.*?>.*?</record>', re.DOTALL)
return regex.findall(blob)
def _prepare_blob(self):
"""
Transforms the blob into rec_tree structure to use it in the standar
translation phase inside C{JsonReader}
"""
self.rec_tree = CoolDict()
try:
if self.blob_wrapper.schema.lower().startswith('file:'):
self.blob_wrapper.blob = open(self.blob_wrapper.blob_file_name, 'r').read()
if self.blob_wrapper.schema.lower() in ['recstruct']:
self.__create_rectree_from_recstruct()
elif self.blob_wrapper.schema.lower() in ['xml', 'file:xml']:
#TODO: Implement translation directrly from xml
from invenio.bibrecord import create_record
self.blob_wrapper.blob = create_record(self.blob_wrapper.blob)[0]
self.__create_rectree_from_recstruct()
except AttributeError:
#Assume marcxml
from invenio.bibrecord import create_record
self.blob_wrapper.blob = create_record(self.blob_wrapper.blob)[0]
self.__create_rectree_from_recstruct()
def __create_rectree_from_recstruct(self):
"""
Using rectruct as base format it creates the intermediate structure that
_translate will use.
"""
for key, values in self.blob_wrapper.blob.iteritems():
if key < '010' and key.isdigit():
#Control field, it assumes controlfields are numeric only
self.rec_tree[key] = CoolList([value[3] for value in values])
else:
for value in values:
field = CoolDict()
for subfield in value[0]:
field.extend(subfield[0], subfield[1])
self.rec_tree.extend((key + value[1] + value[2]).replace(' ', '_'), field)
## Compulsory plugin interface
readers = MarcReader

Event Timeline

c4science · Help