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bibeditcli.py
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bibeditcli.py
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# -*- coding: utf-8 -*-
##
## $Id$
##
## This file is part of CDS Invenio.
## Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008 CERN.
##
## CDS 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.
##
## CDS 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 CDS Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
"""
BibEdit CLI tool.
Usage: bibedit [options]
General options:
-h, --help print this help
-V, --version print version number
Options to inspect record history:
--list-revisions [recid] list all revisions of a record
--get-revision [recid.revdate] print MARCXML of given record revision
--diff-revisions [recidA.revdateB] print MARCXML difference between record A
[recidC.revdateD] dated B and record C dated D
"""
__revision__ = "$Id$"
import re
import sys
import zlib
import difflib
_RE_RECORD_REVISION_FORMAT = re.compile(r'^(\d+)\.(\d{14})$')
from invenio.dbquery import run_sql
def print_usage():
"""Print help."""
print __doc__
def print_version():
"""Print version information."""
print __revision__
def list_record_revisions(recid):
"""
Return list of all known record revisions (=RECID.REVDATE) for
record RECID in chronologically decreasing order (latest first).
"""
out = []
res = run_sql("""SELECT id_bibrec,
DATE_FORMAT(job_date, '%%Y%%m%%d%%H%%i%%s')
FROM hstRECORD WHERE id_bibrec=%s
ORDER BY job_date DESC""",
(recid,))
for row in res:
out.append("%s.%s" % (row[0], row[1]))
return out
def revision_valid_p(revid):
"""
Predicate to test validity of revision ID format (=RECID.REVDATE).
"""
if _RE_RECORD_REVISION_FORMAT.match(revid):
return True
return False
def get_marcxml_of_record_revision(revid):
"""
Return MARCXML string with corresponding to revision REVID
(=RECID.REVDATE) of a record. Return empty string if revision
does not exist. REVID is assumed to be washed already.
"""
out = ""
match = _RE_RECORD_REVISION_FORMAT.match(revid)
recid = match.group(1)
revdate = match.group(2)
job_date = "%s-%s-%s %s:%s:%s" % (revdate[0:4], revdate[4:6],
revdate[6:8], revdate[8:10],
revdate[10:12], revdate[12:14],)
res = run_sql("""SELECT marcxml FROM hstRECORD
WHERE id_bibrec=%s AND job_date=%s""",
(recid, job_date))
if res:
for row in res:
out += zlib.decompress(row[0]) + "\n"
return out
def cli_list_revisions(recid):
"""
Print list of all known record revisions (=RECID.REVDATE) for
record RECID.
"""
try:
recid = int(recid)
except ValueError:
print "ERROR: record ID must be integer, not %s." % recid
sys.exit(1)
print "\n".join(list_record_revisions(recid))
def cli_get_revision(revid):
"""
Return MARCXML for revision REVID (=RECID.REVDATE) of a record.
Exit if things go wrong.
"""
if not revision_valid_p(revid):
print "ERROR: revision %s is invalid; " \
"must be NNN.YYYYMMDDhhmmss." % revid
sys.exit(1)
out = get_marcxml_of_record_revision(revid)
if out:
print out
else:
print "ERROR: Revision %s not found." % revid
def cli_diff_revisions(revid1, revid2):
"""
Return diffs of MARCXML record revisions REVID1, REVID2.
Exit if things go wrong.
"""
for revid in [revid1, revid2]:
if not revision_valid_p(revid):
print "ERROR: revision %s is invalid; " \
"must be NNN.YYYYMMDDhhmmss." % revid
sys.exit(1)
xml1 = get_marcxml_of_record_revision(revid1)
xml2 = get_marcxml_of_record_revision(revid2)
print "".join(difflib.unified_diff(xml1.splitlines(1),
xml2.splitlines(1),
revid1,
revid2,))
def main():
"""Main entry point."""
if '--help' in sys.argv or \
'-h' in sys.argv:
print_usage()
elif '--version' in sys.argv or \
'-V' in sys.argv:
print_version()
else:
try:
cmd = sys.argv[1]
opts = sys.argv[2:]
if not opts:
raise IndexError
except IndexError:
print_usage()
sys.exit(1)
if cmd == '--list-revisions':
try:
recid = opts[0]
except IndexError:
print_usage()
sys.exit(1)
cli_list_revisions(recid)
elif cmd == '--get-revision':
try:
revid = opts[0]
except IndexError:
print_usage()
sys.exit(1)
cli_get_revision(revid)
elif cmd == '--diff-revisions':
try:
revid1 = opts[0]
revid2 = opts[1]
except IndexError:
print_usage()
sys.exit(1)
cli_diff_revisions(revid1, revid2)
else:
print """ERROR: Please specify a command. Please see '--help'."""
sys.exit(1)
if __name__ == '__main__':
main()

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