| #!/usr/bin/python -B |
| |
| # Copyright 2017 The Android Open Source Project |
| # |
| # Licensed 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. |
| |
| """Generates the timezone data files used by Android.""" |
| |
| import glob |
| import os |
| import re |
| import shutil |
| import subprocess |
| import sys |
| import tarfile |
| import tempfile |
| |
| sys.path.append('%s/external/icu/tools' % os.environ.get('ANDROID_BUILD_TOP')) |
| import i18nutil |
| import icuutil |
| import tzdatautil |
| |
| regions = ['africa', 'antarctica', 'asia', 'australasia', |
| 'etcetera', 'europe', 'northamerica', 'southamerica', |
| # These two deliberately come last so they override what came |
| # before (and each other). |
| 'backward', 'backzone' ] |
| |
| # Calculate the paths that are referred to by multiple functions. |
| android_build_top = i18nutil.GetAndroidRootOrDie() |
| timezone_dir = os.path.realpath('%s/system/timezone' % android_build_top) |
| i18nutil.CheckDirExists(timezone_dir, 'system/timezone') |
| |
| zone_compactor_dir = os.path.realpath('%s/system/timezone/zone_compactor' % android_build_top) |
| i18nutil.CheckDirExists(timezone_dir, 'system/timezone/zone_zompactor') |
| |
| timezone_input_data_dir = os.path.realpath('%s/input_data' % timezone_dir) |
| |
| timezone_output_data_dir = '%s/output_data' % timezone_dir |
| i18nutil.CheckDirExists(timezone_output_data_dir, 'output_data') |
| |
| tmp_dir = tempfile.mkdtemp('-tzdata') |
| |
| |
| def WriteSetupFile(extracted_iana_dir): |
| """Writes the list of zones that ZoneCompactor should process.""" |
| links = [] |
| zones = [] |
| for region in regions: |
| for line in open('%s/%s' % (extracted_iana_dir, region)): |
| fields = line.split() |
| if fields: |
| if fields[0] == 'Link': |
| links.append('%s %s %s' % (fields[0], fields[1], fields[2])) |
| zones.append(fields[2]) |
| elif fields[0] == 'Zone': |
| zones.append(fields[1]) |
| zones.sort() |
| |
| zone_compactor_setup_file = '%s/setup' % tmp_dir |
| setup = open(zone_compactor_setup_file, 'w') |
| for link in sorted(set(links)): |
| setup.write('%s\n' % link) |
| for zone in sorted(set(zones)): |
| setup.write('%s\n' % zone) |
| setup.close() |
| return zone_compactor_setup_file |
| |
| |
| def BuildIcuData(iana_tar_file): |
| icu_build_dir = '%s/icu' % tmp_dir |
| |
| icuutil.PrepareIcuBuild(icu_build_dir) |
| icuutil.MakeTzDataFiles(icu_build_dir, iana_tar_file) |
| |
| # Create ICU system image files. |
| icuutil.MakeAndCopyIcuDataFiles(icu_build_dir) |
| |
| # Create the ICU overlay time zone file. |
| icu_overlay_dat_file = '%s/icu_overlay/icu_tzdata.dat' % timezone_output_data_dir |
| icuutil.MakeAndCopyOverlayTzIcuData(icu_build_dir, icu_overlay_dat_file) |
| |
| |
| def ExtractIanaVersion(iana_tar_file): |
| iana_tar_filename = os.path.basename(iana_tar_file) |
| iana_version = re.search('tzdata(.+)\\.tar\\.gz', iana_tar_filename).group(1) |
| return iana_version |
| |
| |
| def BuildTzdata(iana_tar_file): |
| iana_version = ExtractIanaVersion(iana_tar_file) |
| header_string = 'tzdata%s' % iana_version |
| |
| print 'Extracting...' |
| extracted_iana_dir = '%s/extracted_iana' % tmp_dir |
| os.mkdir(extracted_iana_dir) |
| tar = tarfile.open(iana_tar_file, 'r') |
| tar.extractall(extracted_iana_dir) |
| |
| print 'Calling zic(1)...' |
| zic_output_dir = '%s/data' % tmp_dir |
| os.mkdir(zic_output_dir) |
| zic_generator_template = '%s/%%s' % extracted_iana_dir |
| zic_inputs = [ zic_generator_template % x for x in regions ] |
| zic_cmd = ['zic', '-d', zic_output_dir ] |
| zic_cmd.extend(zic_inputs) |
| subprocess.check_call(zic_cmd) |
| |
| zone_compactor_setup_file = WriteSetupFile(extracted_iana_dir) |
| |
| print 'Calling ZoneCompactor to update tzdata to %s...' % iana_version |
| class_files_dir = '%s/classes' % tmp_dir |
| os.mkdir(class_files_dir) |
| |
| subprocess.check_call(['javac', '-d', class_files_dir, |
| '%s/main/java/ZoneCompactor.java' % zone_compactor_dir]) |
| |
| zone_tab_file = '%s/zone.tab' % extracted_iana_dir |
| |
| iana_output_data_dir = '%s/iana' % timezone_output_data_dir |
| subprocess.check_call(['java', '-cp', class_files_dir, 'ZoneCompactor', |
| zone_compactor_setup_file, zic_output_dir, zone_tab_file, |
| iana_output_data_dir, header_string]) |
| |
| |
| def BuildTzlookup(): |
| # We currently just copy a manually-maintained xml file. |
| tzlookup_source_file = '%s/android/tzlookup.xml' % timezone_input_data_dir |
| tzlookup_dest_file = '%s/android/tzlookup.xml' % timezone_output_data_dir |
| shutil.copyfile(tzlookup_source_file, tzlookup_dest_file) |
| |
| |
| def CreateDistroFiles(iana_version, output_dir): |
| create_distro_script = '%s/distro/tools/create-distro.py' % timezone_dir |
| |
| tzdata_file = '%s/iana/tzdata' % timezone_output_data_dir |
| icu_file = '%s/icu_overlay/icu_tzdata.dat' % timezone_output_data_dir |
| tzlookup_file = '%s/android/tzlookup.xml' % timezone_output_data_dir |
| |
| distro_file_pattern = '%s/*.zip' % output_dir |
| existing_distro_files = glob.glob(distro_file_pattern) |
| |
| distro_file_metadata_pattern = '%s/*.txt' % output_dir |
| existing_distro_metadata_files = glob.glob(distro_file_metadata_pattern) |
| existing_files = existing_distro_files + existing_distro_metadata_files |
| |
| print 'Removing %s' % existing_files |
| for existing_file in existing_files: |
| os.remove(existing_file) |
| |
| subprocess.check_call([create_distro_script, |
| '-iana_version', iana_version, |
| '-tzdata', tzdata_file, |
| '-icu', icu_file, |
| '-tzlookup', tzlookup_file, |
| '-output', output_dir]) |
| |
| |
| # Run with no arguments from any directory, with no special setup required. |
| # See http://www.iana.org/time-zones/ for more about the source of this data. |
| def main(): |
| print 'Found source data file structure in %s ...' % timezone_input_data_dir |
| |
| iana_data_dir = '%s/iana' % timezone_input_data_dir |
| iana_tar_file = tzdatautil.GetIanaTarFile(iana_data_dir) |
| iana_version = ExtractIanaVersion(iana_tar_file) |
| print 'Found IANA time zone data release %s in %s ...' % (iana_version, iana_tar_file) |
| |
| print 'Found android output dir in %s ...' % timezone_output_data_dir |
| |
| icu_dir = icuutil.icuDir() |
| print 'Found icu in %s ...' % icu_dir |
| |
| BuildIcuData(iana_tar_file) |
| BuildTzdata(iana_tar_file) |
| BuildTzlookup() |
| |
| # Create a distro file from the output from prior stages. |
| distro_output_dir = '%s/distro' % timezone_output_data_dir |
| CreateDistroFiles(iana_version, distro_output_dir) |
| |
| print 'Look in %s and %s for new files' % (timezone_output_data_dir, icu_dir) |
| sys.exit(0) |
| |
| |
| if __name__ == '__main__': |
| main() |