293 lines
10 KiB
Python
293 lines
10 KiB
Python
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#!/usr/bin/python -B
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# Copyright 2017 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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"""Generates the timezone data files used by Android."""
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from __future__ import print_function
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import glob
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import os
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import re
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import subprocess
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import sys
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import tarfile
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import tempfile
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sys.path.append('%s/external/icu/tools' % os.environ.get('ANDROID_BUILD_TOP'))
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import i18nutil
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import icuutil
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import tzdatautil
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# Calculate the paths that are referred to by multiple functions.
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android_build_top = i18nutil.GetAndroidRootOrDie()
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timezone_dir = os.path.realpath('%s/system/timezone' % android_build_top)
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i18nutil.CheckDirExists(timezone_dir, 'system/timezone')
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android_host_out = i18nutil.GetAndroidHostOutOrDie()
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zone_compactor_dir = os.path.realpath('%s/system/timezone/input_tools/android' % android_build_top)
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i18nutil.CheckDirExists(zone_compactor_dir, 'system/timezone/input_tools/android')
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timezone_input_tools_dir = os.path.realpath('%s/input_tools' % timezone_dir)
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timezone_input_data_dir = os.path.realpath('%s/input_data' % timezone_dir)
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timezone_output_data_dir = '%s/output_data' % timezone_dir
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i18nutil.CheckDirExists(timezone_output_data_dir, 'output_data')
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tmp_dir = tempfile.mkdtemp('-tzdata')
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def GenerateZicInputFile(extracted_iana_data_dir):
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# Android APIs assume DST means "summer time" so we follow the rearguard format
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# introduced in 2018e.
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zic_input_file_name = 'rearguard.zi'
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# 'NDATA=' is used to remove unnecessary rules files.
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subprocess.check_call(['make', '-C', extracted_iana_data_dir, 'NDATA=', zic_input_file_name])
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zic_input_file = '%s/%s' % (extracted_iana_data_dir, zic_input_file_name)
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if not os.path.exists(zic_input_file):
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print('Could not find %s' % zic_input_file)
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sys.exit(1)
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return zic_input_file
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def WriteSetupFile(zic_input_file):
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"""Writes the list of zones that ZoneCompactor should process."""
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links = []
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zones = []
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for line in open(zic_input_file):
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fields = line.split()
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if fields:
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line_type = fields[0]
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if line_type == 'Link':
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# Each "Link" line requires the creation of a link from an old tz ID to
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# a new tz ID, and implies the existence of a zone with the old tz ID.
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#
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# IANA terminology:
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# TARGET = the new tz ID, LINK-NAME = the old tz ID
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target = fields[1]
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link_name = fields[2]
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links.append('Link %s %s' % (target, link_name))
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zones.append('Zone %s' % link_name)
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elif line_type == 'Zone':
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# Each "Zone" line indicates the existence of a tz ID.
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#
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# IANA terminology:
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# NAME is the tz ID, other fields like STDOFF, RULES, FORMAT,[UNTIL] are
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# ignored.
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name = fields[1]
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zones.append('Zone %s' % name)
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zone_compactor_setup_file = '%s/setup' % tmp_dir
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setup = open(zone_compactor_setup_file, 'w')
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# Ordering requirement from ZoneCompactor: Links must come first.
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for link in sorted(set(links)):
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setup.write('%s\n' % link)
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for zone in sorted(set(zones)):
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setup.write('%s\n' % zone)
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setup.close()
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return zone_compactor_setup_file
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def BuildIcuData(iana_data_tar_file):
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icu_build_dir = '%s/icu' % tmp_dir
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icuutil.PrepareIcuBuild(icu_build_dir)
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icuutil.MakeTzDataFiles(icu_build_dir, iana_data_tar_file)
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# Create ICU system image files.
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icuutil.MakeAndCopyIcuDataFiles(icu_build_dir)
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icu_overlay_dir = '%s/icu_overlay' % timezone_output_data_dir
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# Create the ICU overlay time zone file.
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icu_overlay_dat_file = '%s/icu_tzdata.dat' % icu_overlay_dir
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icuutil.MakeAndCopyOverlayTzIcuData(icu_build_dir, icu_overlay_dat_file)
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# Copy ICU license file(s)
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icuutil.CopyLicenseFiles(icu_overlay_dir)
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def GetIanaVersion(iana_tar_file):
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iana_tar_filename = os.path.basename(iana_tar_file)
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iana_version = re.search('tz(?:data|code)(.+)\\.tar\\.gz', iana_tar_filename).group(1)
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return iana_version
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def ExtractTarFile(tar_file, dir):
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print('Extracting %s...' % tar_file)
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if not os.path.exists(dir):
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os.mkdir(dir)
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tar = tarfile.open(tar_file, 'r')
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tar.extractall(dir)
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def BuildZic(iana_tools_dir):
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iana_zic_code_tar_file = tzdatautil.GetIanaTarFile(iana_tools_dir, 'tzcode')
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iana_zic_code_version = GetIanaVersion(iana_zic_code_tar_file)
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iana_zic_data_tar_file = tzdatautil.GetIanaTarFile(iana_tools_dir, 'tzdata')
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iana_zic_data_version = GetIanaVersion(iana_zic_data_tar_file)
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print('Found IANA zic release %s/%s in %s/%s ...' \
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% (iana_zic_code_version, iana_zic_data_version, iana_zic_code_tar_file,
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iana_zic_data_tar_file))
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zic_build_dir = '%s/zic' % tmp_dir
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ExtractTarFile(iana_zic_code_tar_file, zic_build_dir)
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ExtractTarFile(iana_zic_data_tar_file, zic_build_dir)
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# zic
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print('Building zic...')
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# VERSION_DEPS= is to stop the build process looking for files that might not
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# be present across different versions.
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subprocess.check_call(['make', '-C', zic_build_dir, 'zic'])
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zic_binary_file = '%s/zic' % zic_build_dir
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if not os.path.exists(zic_binary_file):
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print('Could not find %s' % zic_binary_file)
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sys.exit(1)
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return zic_binary_file
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def BuildTzdata(zic_binary_file, extracted_iana_data_dir, iana_data_version):
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print('Generating zic input file...')
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zic_input_file = GenerateZicInputFile(extracted_iana_data_dir)
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print('Calling zic...')
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zic_output_dir = '%s/data' % tmp_dir
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os.mkdir(zic_output_dir)
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zic_cmd = [zic_binary_file, '-d', zic_output_dir, zic_input_file]
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subprocess.check_call(zic_cmd)
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# ZoneCompactor
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zone_compactor_setup_file = WriteSetupFile(zic_input_file)
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print('Calling ZoneCompactor to update tzdata to %s...' % iana_data_version)
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tzdatautil.InvokeSoong(android_build_top, ['zone_compactor'])
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# Create args for ZoneCompactor
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header_string = 'tzdata%s' % iana_data_version
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print('Executing ZoneCompactor...')
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command = '%s/bin/zone_compactor' % android_host_out
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iana_output_data_dir = '%s/iana' % timezone_output_data_dir
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subprocess.check_call([command, zone_compactor_setup_file, zic_output_dir, iana_output_data_dir,
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header_string])
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def BuildTzlookupAndTzIds(iana_data_dir):
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countryzones_source_file = '%s/android/countryzones.txt' % timezone_input_data_dir
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tzlookup_dest_file = '%s/android/tzlookup.xml' % timezone_output_data_dir
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tzids_dest_file = '%s/android/tzids.prototxt' % timezone_output_data_dir
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print('Calling TzLookupGenerator to create tzlookup.xml / tzids.prototxt...')
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tzdatautil.InvokeSoong(android_build_top, ['tzlookup_generator'])
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zone_tab_file = '%s/zone.tab' % iana_data_dir
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backward_file = '%s/backward' % iana_data_dir
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command = '%s/bin/tzlookup_generator' % android_host_out
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subprocess.check_call([command, countryzones_source_file, zone_tab_file, backward_file,
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tzlookup_dest_file, tzids_dest_file])
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def BuildTelephonylookup():
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telephonylookup_source_file = '%s/android/telephonylookup.txt' % timezone_input_data_dir
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telephonylookup_dest_file = '%s/android/telephonylookup.xml' % timezone_output_data_dir
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print('Calling TelephonyLookupGenerator to create telephonylookup.xml...')
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tzdatautil.InvokeSoong(android_build_top, ['telephonylookup_generator'])
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command = '%s/bin/telephonylookup_generator' % android_host_out
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subprocess.check_call([command, telephonylookup_source_file, telephonylookup_dest_file])
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def CreateDistroFiles(iana_data_version, output_distro_dir, output_version_file):
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create_distro_script = '%s/distro/tools/create-distro.py' % timezone_dir
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tzdata_file = '%s/iana/tzdata' % timezone_output_data_dir
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icu_file = '%s/icu_overlay/icu_tzdata.dat' % timezone_output_data_dir
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tzlookup_file = '%s/android/tzlookup.xml' % timezone_output_data_dir
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telephonylookup_file = '%s/android/telephonylookup.xml' % timezone_output_data_dir
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distro_file_pattern = '%s/*.zip' % output_distro_dir
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existing_files = glob.glob(distro_file_pattern)
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print('Removing %s' % existing_files)
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for existing_file in existing_files:
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os.remove(existing_file)
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subprocess.check_call([create_distro_script,
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'-iana_version', iana_data_version,
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'-tzdata', tzdata_file,
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'-icu', icu_file,
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'-tzlookup', tzlookup_file,
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'-telephonylookup', telephonylookup_file,
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'-output_distro_dir', output_distro_dir,
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'-output_version_file', output_version_file])
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def UpdateTestFiles():
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testing_data_dir = '%s/testing/data' % timezone_dir
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update_test_files_script = '%s/create-test-data.sh' % testing_data_dir
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subprocess.check_call([update_test_files_script], cwd=testing_data_dir)
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# Run with no arguments from any directory, with no special setup required.
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# See http://www.iana.org/time-zones/ for more about the source of this data.
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def main():
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print('Source data file structure: %s' % timezone_input_data_dir)
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print('Source tools file structure: %s' % timezone_input_tools_dir)
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print('Intermediate / working dir: %s' % tmp_dir)
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print('Output data file structure: %s' % timezone_output_data_dir)
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iana_input_data_dir = '%s/iana' % timezone_input_data_dir
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iana_data_tar_file = tzdatautil.GetIanaTarFile(iana_input_data_dir, 'tzdata')
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iana_data_version = GetIanaVersion(iana_data_tar_file)
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print('IANA time zone data release %s in %s ...' % (iana_data_version, iana_data_tar_file))
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icu_dir = icuutil.icuDir()
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print('Found icu in %s ...' % icu_dir)
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BuildIcuData(iana_data_tar_file)
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iana_tools_dir = '%s/iana' % timezone_input_tools_dir
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zic_binary_file = BuildZic(iana_tools_dir)
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iana_data_dir = '%s/iana_data' % tmp_dir
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ExtractTarFile(iana_data_tar_file, iana_data_dir)
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BuildTzdata(zic_binary_file, iana_data_dir, iana_data_version)
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BuildTzlookupAndTzIds(iana_data_dir)
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BuildTelephonylookup()
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# Create a distro file and version file from the output from prior stages.
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output_distro_dir = '%s/distro' % timezone_output_data_dir
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output_version_file = '%s/version/tz_version' % timezone_output_data_dir
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CreateDistroFiles(iana_data_version, output_distro_dir, output_version_file)
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# Update test versions of distro files too.
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UpdateTestFiles()
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print('Look in %s and %s for new files' % (timezone_output_data_dir, icu_dir))
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sys.exit(0)
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if __name__ == '__main__':
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main()
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