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Filename : whatis-rep.py
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#!/usr/bin/env python
#
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License.  You may obtain a copy of the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied.  See the License for the
# specific language governing permissions and limitations
# under the License.
#
#
#
# Print a description (including data, path, and revision) of the
# specified node reps in a Subversion filesystem.  Walks as much of
# the reps table as necessary to locate the data (e.g. does a table
# scan).

# Standard modules
import sys, os, re, codecs

# Local support modules
import skel, svnfs

def main():
  progname = os.path.basename(sys.argv[0])
  if len(sys.argv) >= 3:
    dbhome = os.path.join(sys.argv[1], 'db')
    if not os.path.exists(dbhome):
      sys.stderr.write("%s: '%s' is not a valid svn repository\n" %
          (sys.argv[0], dbhome))
      sys.stderr.flush()
      sys.exit(1)
    rep_ids = sys.argv[2:]
  else:
    sys.stderr.write("Usage: %s <svn-repository> <rep-id>...\n" % progname)
    sys.stderr.flush()
    sys.exit(1)

  print("%s running on repository '%s'" % (progname, dbhome))
  print("")
  rep_ids = dict.fromkeys(rep_ids)
  ctx = svnfs.Ctx(dbhome)
  try:
    cur = ctx.nodes_db.cursor()
    try:
      rec = cur.first()
      while rec:
        if rec[0] != 'next-key':
          nid, cid, tid = rec[0].split(".")
          nd = skel.Node(rec[1])
          if nd.datarep in rep_ids:
            rev = skel.Txn(ctx.txns_db[tid]).rev
            print("%s: data of '%s%s' in r%s" % (nd.datarep,
                nd.createpath, {"dir":'/', "file":''}[nd.kind], rev))
          if nd.proprep in rep_ids:
            rev = skel.Txn(ctx.txns_db[tid]).rev
            print("%s: properties of '%s%s' in r%s" % (nd.datarep,
                nd.createpath, {"dir":'/', "file":''}[nd.kind], rev))
        rec = cur.next()
    finally:
      cur.close()
  finally:
    ctx.close()

if __name__ == '__main__':
  main()