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usr/share/doc/subversion-1.7.14/hook-scripts/_[ Not.Writable ]

File://usr/share/doc/subversion-1.7.14/hook-scripts/verify-po.py

#!/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.
#
#
"""This is a pre-commit hook that checks whether the contents of PO files
committed to the repository are encoded in UTF-8.
"""

import codecs
import string
import sys
import subprocess
from svn import core, fs, delta, repos

# Set to the path of the 'msgfmt' executable to use msgfmt to check
# the syntax of the po file

USE_MSGFMT = None

if USE_MSGFMT is not None:
  class MsgFmtChecker:
    def __init__(self):
      self.pipe = subprocess.Popen([USE_MSGFMT, "-c", "-o", "/dev/null", "-"],
                                   stdin=subprocess.PIPE,
                                   close_fds=sys.platform != "win32")
      self.io_error = 0

    def write(self, data):
      if self.io_error:
        return
      try:
        self.pipe.stdin.write(data)
      except IOError:
        self.io_error = 1

    def close(self):
      try:
        self.pipe.stdin.close()
      except IOError:
        self.io_error = 1
      return self.pipe.wait() == 0 and not self.io_error
else:
  class MsgFmtChecker:
    def write(self, data):
      pass
    def close(self):
      return 1


class ChangeReceiver(delta.Editor):
  def __init__(self, txn_root, base_root, pool):
    self.txn_root = txn_root
    self.base_root = base_root
    self.pool = pool

  def add_file(self, path, parent_baton,
               copyfrom_path, copyfrom_revision, file_pool):
    return [0, path]

  def open_file(self, path, parent_baton, base_revision, file_pool):
    return [0, path]

  def apply_textdelta(self, file_baton, base_checksum):
    file_baton[0] = 1
    # no handler
    return None

  def close_file(self, file_baton, text_checksum):
    changed, path = file_baton
    if len(path) < 3 or path[-3:] != '.po' or not changed:
      # This is not a .po file, or it hasn't changed
      return

    try:
      # Read the file contents through a validating UTF-8 decoder
      subpool = core.svn_pool_create(self.pool)
      checker = MsgFmtChecker()
      try:
        stream = core.Stream(fs.file_contents(self.txn_root, path, subpool))
        reader = codecs.getreader('UTF-8')(stream, 'strict')
        writer = codecs.getwriter('UTF-8')(checker, 'strict')
        while True:
          data = reader.read(core.SVN_STREAM_CHUNK_SIZE)
          if not data:
            break
          writer.write(data)
        if not checker.close():
          sys.exit("PO format check failed for '" + path + "'")
      except UnicodeError:
        sys.exit("PO file is not in UTF-8: '" + path + "'")
    finally:
      core.svn_pool_destroy(subpool)


def check_po(pool, repos_path, txn):
  def authz_cb(root, path, pool):
    return 1

  fs_ptr = repos.fs(repos.open(repos_path, pool))
  txn_ptr = fs.open_txn(fs_ptr, txn, pool)
  txn_root = fs.txn_root(txn_ptr, pool)
  base_root = fs.revision_root(fs_ptr, fs.txn_base_revision(txn_ptr), pool)
  editor = ChangeReceiver(txn_root, base_root, pool)
  e_ptr, e_baton = delta.make_editor(editor, pool)
  repos.dir_delta(base_root, '', '', txn_root, '',
		  e_ptr, e_baton, authz_cb, 0, 1, 0, 0, pool)


if __name__ == '__main__':
  assert len(sys.argv) == 3
  core.run_app(check_po, sys.argv[1], sys.argv[2])

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