tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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create_lts.py (4563B)

      1 #!/usr/bin/env python3
      2 #
      3 # Copyright 2021 The Abseil Authors.
      4 #
      5 # Licensed under the Apache License, Version 2.0 (the "License");
      6 # you may not use this file except in compliance with the License.
      7 # You may obtain a copy of the License at
      8 #
      9 #      https://www.apache.org/licenses/LICENSE-2.0
     10 #
     11 # Unless required by applicable law or agreed to in writing, software
     12 # distributed under the License is distributed on an "AS IS" BASIS,
     13 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     14 # See the License for the specific language governing permissions and
     15 # limitations under the License.
     16 """A script to do source transformations to create a new LTS release.
     17 
     18   Usage: ./create_lts.py YYYYMMDD
     19 """
     20 
     21 import sys
     22 
     23 
     24 def ReplaceStringsInFile(filename, replacement_dict):
     25  """Performs textual replacements in a file.
     26 
     27  Rewrites filename with the keys in replacement_dict replaced with
     28  their values. This function assumes the file can fit in memory.
     29 
     30  Args:
     31    filename: the filename to perform the replacement on
     32    replacement_dict: a dictionary of key strings to be replaced with their
     33      values
     34 
     35  Raises:
     36    Exception: A failure occurred
     37  """
     38  f = open(filename, 'r')
     39  content = f.read()
     40  f.close()
     41 
     42  for key, value in replacement_dict.items():
     43    original = content
     44    content = content.replace(key, value)
     45    if content == original:
     46      raise Exception('Failed to find {} in {}'.format(key, filename))
     47 
     48  f = open(filename, 'w')
     49  f.write(content)
     50  f.close()
     51 
     52 
     53 def StripContentBetweenTags(filename, strip_begin_tag, strip_end_tag):
     54  """Strip contents from a file.
     55 
     56  Rewrites filename with by removing all content between
     57  strip_begin_tag and strip_end_tag, including the tags themselves.
     58 
     59  Args:
     60    filename: the filename to perform the replacement on
     61    strip_begin_tag: the start of the content to be removed
     62    strip_end_tag: the end of the content to be removed
     63 
     64  Raises:
     65    Exception: A failure occurred
     66  """
     67  f = open(filename, 'r')
     68  content = f.read()
     69  f.close()
     70 
     71  while True:
     72    begin = content.find(strip_begin_tag)
     73    if begin == -1:
     74      break
     75    end = content.find(strip_end_tag, begin + len(strip_begin_tag))
     76    if end == -1:
     77      raise Exception('{}: imbalanced strip begin ({}) and '
     78                      'end ({}) tags'.format(filename, strip_begin_tag,
     79                                             strip_end_tag))
     80    content = content.replace(content[begin:end + len(strip_end_tag)], '')
     81 
     82  f = open(filename, 'w')
     83  f.write(content)
     84  f.close()
     85 
     86 
     87 def main(argv):
     88  if len(argv) != 2:
     89    print('Usage: {} YYYYMMDD'.format(sys.argv[0], file=sys.stderr))
     90    sys.exit(1)
     91 
     92  datestamp = sys.argv[1]
     93  if len(datestamp) != 8 or not datestamp.isdigit():
     94    raise Exception(
     95        'datestamp={} is not in the YYYYMMDD format'.format(datestamp))
     96 
     97  # Replacement directives go here.
     98  ReplaceStringsInFile(
     99      'MODULE.bazel', {
    100          'version = "head"':
    101              'version = "{}.0"'.format(datestamp)
    102      })
    103  ReplaceStringsInFile(
    104      'absl/base/config.h', {
    105          '#undef ABSL_LTS_RELEASE_VERSION':
    106              '#define ABSL_LTS_RELEASE_VERSION {}'.format(datestamp),
    107          '#undef ABSL_LTS_RELEASE_PATCH_LEVEL':
    108              '#define ABSL_LTS_RELEASE_PATCH_LEVEL 0'
    109      })
    110  ReplaceStringsInFile(
    111      'absl/base/options.h', {
    112          '#define ABSL_OPTION_USE_INLINE_NAMESPACE 0':
    113              '#define ABSL_OPTION_USE_INLINE_NAMESPACE 1',
    114          '#define ABSL_OPTION_INLINE_NAMESPACE_NAME head':
    115              '#define ABSL_OPTION_INLINE_NAMESPACE_NAME lts_{}'.format(
    116                  datestamp)
    117      })
    118  ReplaceStringsInFile(
    119      'CMakeLists.txt',
    120      {
    121          'project(absl LANGUAGES CXX)': (
    122              'project(absl LANGUAGES CXX VERSION {})'.format(datestamp)
    123          ),
    124          # Set the SOVERSION to YYMM.0.0 - The first 0 means we only have ABI
    125          # compatible changes, and the second 0 means we can increment it to
    126          # mark changes as ABI-compatible, for patch releases.  Note that we
    127          # only use the last two digits of the year and the month because the
    128          # MacOS linker requires the first part of the SOVERSION to fit into
    129          # 16 bits.
    130          # https://www.sicpers.info/2013/03/how-to-version-a-mach-o-library/
    131          'ABSL_SOVERSION 0': 'ABSL_SOVERSION "{}.0.0"'.format(datestamp[2:6]),
    132      },
    133  )
    134  StripContentBetweenTags('CMakeLists.txt', '# absl:lts-remove-begin',
    135                          '# absl:lts-remove-end')
    136 
    137 
    138 if __name__ == '__main__':
    139  main(sys.argv)