#!/usr/bin/python## Erases the text of every file in a BDB repository#import sys, osimport skel, svnfsdef main():  if len(sys.argv) == 2:    dbhome = os.path.join(sys.argv[1], 'db')    for i in ('', 'uuids', 'revisions', 'transactions', 'representations',        'strings', 'changes', 'copies', 'nodes'):      if not os.path.exists(os.path.join(dbhome, i)):        sys.stderr.write("%s: '%s' is not a valid bdb svn repository\n" %            (sys.argv[0], sys.argv[1]))        sys.exit(1)  else:    sys.stderr.write("Usage: %s <bdb-svn-repository>\n" % sys.argv[0])    sys.exit(1)  print "WARNING!: This program will destroy all text data in the subversion"  print "repository '%s'" % sys.argv[1]  print "Do not proceed unless this is a *COPY* of your real repository"  print "If this is really what you want to do, " \      "type 'YESERASE' and press Return"  confirmation = raw_input("Confirmation string> ")  if confirmation != "YESERASE":    print "Cancelled - confirmation string not matched"    sys.exit(0)  print "Opening database environment..."  cur = None  ctx = svnfs.Ctx(dbhome)  try:    cur = ctx.nodes_db.cursor()    nodecount = 0    newrep = skel.Rep()    newrep.str = "empty"    empty_fulltext_rep_skel = newrep.unparse()    del newrep    ctx.strings_db['empty'] = ""    rec = cur.first()    while rec:      if rec[0] != "next-key":        if (nodecount % 10000 == 0) and nodecount != 0:          print "Processed %d nodes..." % nodecount        nodecount += 1        node = skel.Node(rec[1])        if node.kind == "file":          rep = skel.Rep(ctx.reps_db[node.datarep])          if rep.kind == "fulltext":            if ctx.strings_db.has_key(rep.str):              del ctx.strings_db[rep.str]            ctx.reps_db[node.datarep] = empty_fulltext_rep_skel          else:            for w in rep.windows:              if ctx.strings_db.has_key(w.str):                del ctx.strings_db[w.str]            ctx.reps_db[node.datarep] = empty_fulltext_rep_skel      rec = cur.next()    print "Processed %d nodes" % nodecount  finally:    if cur:      cur.close()    ctx.close()  print "Done"if __name__ == '__main__':  main()