| #!/usr/bin/env python3.8 |
| # Copyright 2020 The Fuchsia Authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| """SDK Frontend generator for transforming the IDK into the GN SDK. |
| |
| This class accepts a directory or tarball of an instance of the Integrator |
| Developer Kit (IDK) and uses the metadata from the IDK to drive the |
| construction of a specific SDK for use in projects using GN. |
| """ |
| |
| import argparse |
| import glob |
| import json |
| import os |
| import shutil |
| import stat |
| import subprocess |
| import sys |
| import tarfile |
| import xml.etree.ElementTree |
| |
| SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__)) |
| FUCHSIA_ROOT = os.path.dirname( # $root |
| os.path.dirname( # scripts |
| os.path.dirname( # sdk |
| SCRIPT_DIR))) # gn |
| |
| sys.path += [os.path.join(FUCHSIA_ROOT, 'scripts', 'sdk', 'common')] |
| from files import copy_tree |
| from frontend import Frontend |
| import template_model as model |
| |
| from collections import namedtuple |
| # Arguments for self.copy_file. Using the 'src' path, a relative path will be |
| # calculated from 'base', then the file is copied to that path under 'dest'. |
| # E.g. to copy {in}/foo/bar/baz to {out}/blam/baz, use |
| # CopyArgs(src = 'foo/bar/baz', base = 'foo/bar', dest = 'blam') |
| CopyArgs = namedtuple('CopyArgs', ['src', 'base', 'dest']) |
| |
| # Any extra files which need to be added manually to the SDK can be specified |
| # here. Entries are structured as args for self.copy_file. |
| EXTRA_COPY = [ |
| # Copy various files to support femu.sh from implementation of fx emu. |
| # See base/bin/femu-meta.json for more detail about the files needed. |
| # {fuchsia}/tools/devshell/emu -> {out}/bin/devshell/emu |
| CopyArgs( |
| src=os.path.join(FUCHSIA_ROOT, 'tools', 'devshell', 'emu'), |
| base=os.path.join(FUCHSIA_ROOT, 'tools'), |
| dest='bin'), |
| # {fuchsia}/tools/devshell/lib/fvm.sh -> {out}/bin/devshell/lib/fvm.sh |
| CopyArgs( |
| src=os.path.join(FUCHSIA_ROOT, 'tools', 'devshell', 'lib', 'fvm.sh'), |
| base=os.path.join(FUCHSIA_ROOT, 'tools'), |
| dest='bin'), |
| # {fuchsia}/scripts/start-unsecure-internet.sh -> {out}/bin/start-unsecure-internet.sh |
| CopyArgs( |
| src=os.path.join(FUCHSIA_ROOT, 'scripts', 'start-unsecure-internet.sh'), |
| base=os.path.join(FUCHSIA_ROOT, 'scripts'), |
| dest='bin'), |
| # {fuchsia}/tools/devshell/lib/emu-ifup-macos.sh -> {out}/bin/devshell/lib/emu-ifup-macos.sh |
| CopyArgs( |
| src=os.path.join( |
| FUCHSIA_ROOT, 'tools', 'devshell', 'lib', 'emu-ifup-macos.sh'), |
| base=os.path.join(FUCHSIA_ROOT, 'tools'), |
| dest='bin'), |
| # Copy scripts to support SSH credential handling. |
| # {fuchsia}/tools/devshell/lib/verify-default-keys.sh -> {out}/bin/devshell/lib/verify-default-keys.sh |
| CopyArgs( |
| src=os.path.join( |
| FUCHSIA_ROOT, 'tools', 'devshell', 'lib', 'verify-default-keys.sh'), |
| base=os.path.join(FUCHSIA_ROOT, 'tools'), |
| dest='bin'), |
| ] |
| |
| # Capture the version of required prebuilts from the jiri manifest. Note |
| # that ${platform} is actually part of the XML package name, so should |
| # not be interpreted. |
| EXTRA_PREBUILTS = { |
| 'fuchsia/third_party/aemu/${platform}': 'aemu', |
| 'fuchsia/third_party/grpcwebproxy/${platform}': 'grpcwebproxy', |
| 'fuchsia/vdl/${platform}': 'device_launcher', |
| } |
| |
| |
| class GNBuilder(Frontend): |
| """Frontend for GN. |
| |
| Based on the metadata in the IDK used, this frontend generates GN |
| specific build rules for using the contents of the IDK. It also adds a |
| collection of tools for interacting with devices and emulators running |
| Fuchsia. |
| |
| The templates used are in the templates directory, and the static content that |
| is added to the SDK is in the base directory. |
| """ |
| |
| def __init__( |
| self, |
| local_dir, |
| output, |
| archive='', |
| directory='', |
| jiri_manifest=None): |
| """Initializes an instance of the GNBuilder. |
| |
| Note that only one of archive or directory should be specified. |
| |
| Args: |
| local_dir: The local directory used to find additional resources used |
| during the transformation. |
| output: The output directory. The contents of this directory are removed |
| before processing the IDK. |
| archive: The tarball archive to process. Can be empty meaning use the |
| directory parameter as input. |
| directory: The directory containing an unpackaged IDK. Can be empty |
| meaning use the archive parameter as input. |
| jiri_manifest: File containing external references in XML format. |
| This is typically $FUCHSIA_ROOT/.jiri_root/update_history/latest |
| """ |
| super(GNBuilder, self).__init__( |
| local_dir=local_dir, |
| output=output, |
| archive=archive, |
| directory=directory) |
| self.target_arches = [] |
| self.fidl_targets = [] # List of all FIDL library targets generated |
| self.cc_prebuilt_targets = [ |
| ] # List of all CC prebuilt library targets generated |
| self.cc_source_targets = [ |
| ] # List of all CC source library targets generated |
| self.loadable_module_targets = [ |
| ] # List of all loadable module targets generated |
| self.sysroot_targets = [] # List of all sysroot targets generated |
| self.build_files = [] |
| if jiri_manifest: |
| self.jiri_manifest = jiri_manifest |
| else: |
| self.jiri_manifest = os.path.join( |
| FUCHSIA_ROOT, '.jiri_root', 'update_history', 'latest') |
| |
| def prepare(self, arch, types): |
| """Called before elements are processed. |
| |
| This is called by the base class before the elements in the IDK are |
| processed. |
| At this time, the contents of the 'base' directory are copied to the |
| output directory, as well as the 'meta' directory from the IDK. |
| |
| Args: |
| arch: A json object describing the host and target architectures. |
| types: The list of atom types contained in the metadata. |
| """ |
| del types # types is not used. |
| self.target_arches = arch['target'] |
| |
| # Capture versions of various prebuilts contained in the jiri manifest |
| prebuilt_results = get_prebuilts(EXTRA_PREBUILTS, self.jiri_manifest) |
| for prebuilt, version in prebuilt_results.items(): |
| with open(self.dest('bin', prebuilt + '.version'), 'w') as output: |
| output.write(version) |
| |
| # Propagate the manifest for the Core SDK into the GN SDK. Metadata |
| # schemas are copied by the metadata_schemas documentation atom. |
| self.copy_file(os.path.join('meta', 'manifest.json')) |
| |
| def finalize(self, arch, types): |
| # Copy the common files. The destination of these files is relative to |
| # the root of the fuchsia_sdk. |
| copy_tree(self.local('base'), self.output, allow_overwrite=False) |
| # Copy any additional files that would normally not be included |
| for each in EXTRA_COPY: |
| self.copy_file( |
| each.src, each.base, each.dest, allow_overwrite=False) |
| |
| self.write_additional_files() |
| # Find CIPD prebuilt gn. |
| gn_path = os.path.join( |
| FUCHSIA_ROOT, 'prebuilt', 'third_party', 'gn', '*', 'gn') |
| gn = glob.glob(gn_path)[0] |
| # Format gn files. |
| for root, _, files in os.walk(self.output): |
| for f in (f for f in files if f.endswith(('.gn', '.gni'))): |
| subprocess.call([gn, 'format', os.path.join(root, f)]) |
| |
| def write_additional_files(self): |
| self.write_file(self.dest('.gitignore'), 'gitignore', self) |
| self.write_file( |
| self.dest("build", "test_targets.gni"), 'test_targets', self) |
| self.write_build_file_metadata( |
| 'gn-build-files', 'build/gn-build-files-meta.json') |
| |
| # Propagate the Core SDK manifest, incorporating our changes. |
| self.update_metadata( |
| [ |
| 'build/gn-rules-meta.json', 'build/gn-build-files-meta.json', |
| 'readme-meta.json' |
| ] + [ |
| os.path.relpath(file, self.output) |
| for file in glob.glob(self.dest('bin/*.json')) |
| ], 'meta/manifest.json') |
| |
| def update_metadata(self, entries, metafile): |
| with open(self.dest(metafile), 'r') as input: |
| metadata = json.load(input) |
| |
| # Documentation and host_tool metadata descriptions are named |
| # inconsistently, so read the manifest and copy them explicitly. |
| for atom in metadata['parts']: |
| if atom['type'] in ['documentation', 'host_tool']: |
| self.copy_file(atom['meta']) |
| |
| # There are dart components and device_profile in the Core SDK which |
| # are not part of the GN SDK. Remove them from the manifest. |
| metadata['parts'] = [ |
| atom for atom in metadata['parts'] |
| if not atom['type'] in ['dart_library', 'device_profile'] |
| ] |
| |
| for entry in entries: |
| with open(self.dest(entry), 'r') as entry_meta: |
| new_meta = json.load(entry_meta) |
| metadata['parts'].append( |
| { |
| 'meta': entry, |
| 'type': new_meta['type'] |
| }) |
| # sort parts list so it is in a stable order |
| def meta_type_key(part): |
| return '%s_%s' % (part['meta'], part['type']) |
| |
| metadata['parts'].sort(key=meta_type_key) |
| |
| with open(self.dest(metafile), 'w') as output: |
| json.dump( |
| metadata, |
| output, |
| indent=2, |
| sort_keys=True, |
| separators=(',', ': ')) |
| |
| def write_build_file_metadata(self, name, filename): |
| """Writes a metadata atom defining the build files. |
| |
| Args: |
| name: the name of atom. |
| filename: the relative filename to write the metadata file. |
| """ |
| self.build_files.sort() |
| data = {'name': name, 'type': 'documentation', 'docs': self.build_files} |
| |
| with open(self.dest(filename), 'w') as output: |
| json.dump( |
| data, output, indent=2, sort_keys=True, separators=(',', ': ')) |
| |
| def write_atom_metadata(self, filename, atom): |
| full_name = self.dest(filename) |
| if not os.path.exists(os.path.dirname(full_name)): |
| os.makedirs(os.path.dirname(full_name)) |
| |
| with open(full_name, 'w') as atom_metadata: |
| json.dump( |
| atom, |
| atom_metadata, |
| indent=2, |
| sort_keys=True, |
| separators=(',', ': ')) |
| |
| # Handlers for SDK atoms |
| |
| def install_documentation_atom(self, atom): |
| self.copy_files(atom['docs']) |
| |
| def install_cc_prebuilt_library_atom(self, atom): |
| name = atom['name'] |
| # Add atom to test targets |
| self.cc_prebuilt_targets.append(name) |
| base = self.dest('pkg', name) |
| library = model.CppPrebuiltLibrary(name) |
| library.relative_path_to_root = os.path.relpath(self.output, start=base) |
| library.is_static = atom['format'] == 'static' |
| |
| self.copy_files(atom['headers'], atom['root'], base, library.hdrs) |
| |
| for arch in self.target_arches: |
| binaries = atom['binaries'][arch] |
| prebuilt_set = model.CppPrebuiltSet(binaries['link']) |
| self.copy_file(binaries['link']) |
| |
| if 'dist' in binaries: |
| prebuilt_set.dist_lib = binaries['dist'] |
| prebuilt_set.dist_path = binaries['dist_path'] |
| self.copy_file(binaries['dist']) |
| |
| if 'debug' in binaries: |
| self.copy_file(binaries['debug']) |
| |
| library.prebuilts[arch] = prebuilt_set |
| |
| for dep in atom['deps']: |
| library.deps.append('../' + dep) |
| |
| library.includes = os.path.relpath(atom['include_dir'], atom['root']) |
| |
| if not os.path.exists(base): |
| os.makedirs(base) |
| self.write_file( |
| os.path.join(base, 'BUILD.gn'), 'cc_prebuilt_library', library) |
| self.write_atom_metadata(os.path.join(base, 'meta.json'), atom) |
| self.build_files.append( |
| os.path.relpath(os.path.join(base, 'BUILD.gn'), self.output)) |
| |
| def install_cc_source_library_atom(self, atom): |
| name = atom['name'] |
| # Add atom to test targets |
| self.cc_source_targets.append(name) |
| base = self.dest('pkg', name) |
| library = model.CppSourceLibrary(name) |
| library.relative_path_to_root = os.path.relpath(self.output, start=base) |
| |
| self.copy_files(atom['headers'], atom['root'], base, library.hdrs) |
| self.copy_files(atom['sources'], atom['root'], base, library.srcs) |
| |
| for dep in atom['deps']: |
| library.deps.append('../' + dep) |
| |
| for dep in atom['fidl_deps']: |
| dep_name = dep |
| library.deps.append('../../fidl/' + dep_name) |
| |
| library.includes = os.path.relpath(atom['include_dir'], atom['root']) |
| |
| self.write_file(os.path.join(base, 'BUILD.gn'), 'cc_library', library) |
| self.write_atom_metadata(os.path.join(base, 'meta.json'), atom) |
| self.build_files.append( |
| os.path.relpath(os.path.join(base, 'BUILD.gn'), self.output)) |
| |
| def install_fidl_library_atom(self, atom): |
| name = atom['name'] |
| base = self.dest('fidl', name) |
| data = model.FidlLibrary(name, atom['name']) |
| data.relative_path_to_root = os.path.relpath(self.output, start=base) |
| data.short_name = name.split('.')[-1] |
| data.namespace = '.'.join(name.split('.')[0:-1]) |
| |
| self.copy_files(atom['sources'], atom['root'], base, data.srcs) |
| for dep in atom['deps']: |
| data.deps.append(dep) |
| |
| self.write_file(os.path.join(base, 'BUILD.gn'), 'fidl_library', data) |
| self.fidl_targets.append(name) |
| self.write_atom_metadata(os.path.join(base, 'meta.json'), atom) |
| self.build_files.append( |
| os.path.relpath(os.path.join(base, 'BUILD.gn'), self.output)) |
| |
| def install_host_tool_atom(self, atom): |
| if 'files' in atom: |
| self.copy_files(atom['files'], atom['root'], 'tools') |
| if 'target_files' in atom: |
| for files in atom['target_files'].values(): |
| self.copy_files(files, atom['root'], 'tools') |
| |
| def install_loadable_module_atom(self, atom): |
| name = atom['name'] |
| if name != 'vulkan_layers': |
| raise RuntimeError('Unsupported loadable_module: %s' % name) |
| |
| # Add loadable modules to test targets |
| self.loadable_module_targets.append(name) |
| |
| # Copy resources and binaries |
| resources = atom['resources'] |
| self.copy_files(resources) |
| |
| binaries = atom['binaries'] |
| for arch in self.target_arches: |
| self.copy_files(binaries[arch]) |
| |
| def _filename_no_ext(name): |
| return os.path.splitext(os.path.basename(name))[0] |
| |
| data = model.VulkanLibrary() |
| # Pair each json resource with its corresponding binary. Each such pair |
| # is a "layer". We only need to check one arch because each arch has the |
| # same list of binaries. |
| arch = next(iter(binaries)) |
| binary_names = binaries[arch] |
| # TODO(jdkoren): use atom[root] once fxr/360094 lands |
| local_pkg = os.path.join('pkg', name) |
| |
| for res in resources: |
| layer_name = _filename_no_ext(res) |
| |
| # Special case: VkLayer_standard_validation does not have a binary |
| # and also depends on VkLayer_khronos_validation. Currently atom |
| # metadata does not contain this information (fxbug.dev/46250). |
| if layer_name == 'VkLayer_standard_validation': |
| layer = model.VulkanLayer( |
| name=layer_name, |
| config=os.path.relpath(res, start=local_pkg), |
| binary='', |
| data_deps=[':VkLayer_khronos_validation']) |
| |
| else: |
| # Filter binaries for a matching name. |
| filtered = [ |
| n for n in binary_names if _filename_no_ext(n) == layer_name |
| ] |
| |
| if not filtered: |
| # If the binary could not be found then do not generate a |
| # target for this layer. The missing targets will cause a |
| # mismatch with the "golden" outputs. |
| continue |
| |
| # Replace harcoded arch in the found binary filename. |
| binary = filtered[0].replace( |
| '/' + arch + '/', "/${target_cpu}/") |
| |
| layer = model.VulkanLayer( |
| name=layer_name, |
| config=os.path.relpath(res, start=local_pkg), |
| binary=os.path.relpath(binary, start=local_pkg)) |
| # Special case: VkLayer_image_pipe_swapchain has an undocumented |
| # data_dep on trace-engine. Currently atom metadata does not |
| # contain this information (fxbug.dev/46250). |
| if layer_name == 'VkLayer_image_pipe_swapchain': |
| layer.data_deps.append('../trace-engine') |
| |
| data.layers.append(layer) |
| |
| base = self.dest(local_pkg) |
| self.write_file(os.path.join(base, 'BUILD.gn'), 'vulkan_module', data) |
| self.build_files.append( |
| os.path.relpath(os.path.join(base, 'BUILD.gn'), self.output)) |
| self.write_atom_metadata(os.path.join(base, 'meta.json'), atom) |
| |
| def install_data_atom(self, atom): |
| self.write_atom_metadata( |
| self.dest('data', 'config', atom['name'], 'meta.json'), atom) |
| self.copy_files(atom['data']) |
| |
| def install_sysroot_atom(self, atom): |
| for arch in self.target_arches: |
| base = self.dest('arch', arch, 'sysroot') |
| arch_data = atom['versions'][arch] |
| arch_root = arch_data['root'] |
| self.copy_files(arch_data['headers'], arch_root, base) |
| self.copy_files(arch_data['link_libs'], arch_root, base) |
| # We maintain debug files in their original location. |
| self.copy_files(arch_data['debug_libs']) |
| # Files in dist_libs are required for toolchain config. They are the |
| # same for all architectures and shouldn't change names, so we |
| # hardcode those names in build/config/BUILD.gn. This may need to |
| # change if/when we support sanitized builds. |
| self.copy_files(arch_data['dist_libs'], arch_root, base) |
| self.write_atom_metadata(self.dest('pkg', 'sysroot', 'meta.json'), atom) |
| |
| |
| class TestData(object): |
| """Class representing test data to be added to the run_py mako template""" |
| |
| def __init__(self): |
| self.fuchsia_root = FUCHSIA_ROOT |
| |
| |
| def make_executable(path): |
| st = os.stat(path) |
| os.chmod(path, st.st_mode | stat.S_IXUSR | stat.S_IXGRP | stat.S_IXOTH) |
| |
| |
| def get_prebuilts(in_extra_prebuilts, jiri_manifest): |
| """ Lookup version strings for a set of prebuilts |
| |
| Given a file such as $FUCHSIA_ROOT/.jiri_root/update_history/latest, find matches for each of the name |
| strings, capture the version string, and return back a dictionary with the mappings. |
| |
| Args: |
| in_extra_prebuilts: Dictionary of name strings to search, and the corresponding short name |
| jiri_manifest: XML file to read, such as $FUCHSIA_ROOT/.jiri_root/update_history/latest |
| |
| Returns: |
| Dictionary of short name to version mappings |
| |
| Raises: |
| RuntimeError: If in_extra_prebuilts contains items not found in the prebuilts file |
| or the jiri manifest can't be parsed |
| """ |
| |
| # Copy the input list since we modify it in the loop |
| extra_prebuilts = in_extra_prebuilts.copy() |
| prebuilt_results = {} |
| try: |
| manifest_root = xml.etree.ElementTree.parse(jiri_manifest).getroot() |
| except Exception as e: |
| raise RuntimeError( |
| 'Unable to parse jiri manifest at %s: %s' % (jiri_manifest, e)) |
| remaining_prebuilts = extra_prebuilts |
| for packages in manifest_root.iter('package'): |
| prebuilt = remaining_prebuilts.pop(packages.attrib['name'], None) |
| if prebuilt: |
| prebuilt_results[prebuilt] = packages.attrib['version'] |
| if remaining_prebuilts: |
| raise RuntimeError( |
| 'Could not find entries in %s for the remaining EXTRA_PREBUILTS: %s' |
| % (jiri_manifest, remaining_prebuilts)) |
| return prebuilt_results |
| |
| |
| def create_test_workspace(output): |
| # Remove any existing output. |
| shutil.rmtree(output, True) |
| # Copy the base tests. |
| copy_tree(os.path.join(SCRIPT_DIR, 'test_project'), output) |
| # run.py file |
| builder = Frontend(local_dir=SCRIPT_DIR) |
| run_py_path = os.path.join(output, 'run.py') |
| builder.write_file( |
| path=run_py_path, template_name='run_py', data=TestData()) |
| make_executable(run_py_path) |
| |
| return True |
| |
| |
| def create_archive(output_archive, output): |
| # If file already exists remove it |
| if os.path.exists(output_archive): |
| os.remove(output_archive) |
| # If GN SDK directory is empty throw an error |
| if not os.path.exists(output): |
| return False |
| # Create GN SDK archive |
| with tarfile.open(output_archive, "w:gz") as archive_file: |
| archive_file.add(output, arcname='') |
| |
| return True |
| |
| |
| def main(args_list=None): |
| parser = argparse.ArgumentParser( |
| description='Creates a GN SDK for a given SDK tarball.') |
| source_group = parser.add_mutually_exclusive_group(required=True) |
| source_group.add_argument( |
| '--archive', help='Path to the SDK archive to ingest', default='') |
| source_group.add_argument( |
| '--directory', help='Path to the SDK directory to ingest', default='') |
| parser.add_argument( |
| '--output', |
| help='Path to the directory where to install the SDK', |
| required=True) |
| parser.add_argument( |
| '--output-archive', |
| help='Path to add the SDK archive file (e.g. "path/to/gn.tar.gz")') |
| parser.add_argument( |
| '--output-archive-only', |
| help= |
| 'Whether to output the SDK archive and skip installing to a directory', |
| default=False, |
| ) |
| parser.add_argument( |
| '--tests', help='Path to the directory where to generate tests') |
| parser.add_argument( |
| '--jiri-manifest', |
| help= |
| 'File containing external references in XML format (e.g. ".jiri_root/update_history/latest")' |
| ) |
| if args_list: |
| args = parser.parse_args(args_list) |
| else: |
| args = parser.parse_args() |
| |
| return run_generator( |
| archive=args.archive, |
| directory=args.directory, |
| output=args.output, |
| tests=args.tests, |
| output_archive=args.output_archive, |
| output_archive_only=args.output_archive_only, |
| jiri_manifest=args.jiri_manifest) |
| |
| |
| def run_generator( |
| archive, |
| directory, |
| output, |
| output_archive_only=False, |
| tests='', |
| output_archive='', |
| jiri_manifest=None): |
| """Run the generator. Returns 0 on success, non-zero otherwise. |
| |
| Note that only one of archive or directory should be specified. |
| |
| Args: |
| archive: Path to an SDK tarball archive. |
| directory: Path to an unpackaged SDK. |
| output: The output directory. |
| tests: The directory where to generate tests. Defaults to empty string. |
| """ |
| |
| # Remove any existing output. |
| if os.path.exists(output): |
| shutil.rmtree(output) |
| |
| builder = GNBuilder( |
| archive=archive, |
| directory=directory, |
| output=output, |
| local_dir=SCRIPT_DIR, |
| jiri_manifest=jiri_manifest) |
| if not builder.run(): |
| return 1 |
| |
| if tests: |
| # Create the tests workspace |
| if not create_test_workspace(tests): |
| return 1 |
| # Copy the GN SDK to the test workspace |
| wrkspc_sdk_dir = os.path.join(tests, 'third_party', 'fuchsia-sdk') |
| copy_tree(output, wrkspc_sdk_dir) |
| |
| # Copy test metadata to the workspace. meta/manifest.json tells the |
| # emulator tools where the SDK for integration testing is located. |
| # This must be done after the GN SDK is copied into the test workspace, |
| # which would otherwise overwrite these contents. |
| testdata = os.path.join(SCRIPT_DIR, 'testdata') |
| copy_tree( |
| os.path.join(testdata, 'meta'), |
| os.path.join(wrkspc_sdk_dir, 'meta')) |
| |
| if output_archive: |
| if not create_archive(output_archive, output): |
| return 1 |
| |
| if output_archive_only: |
| shutil.rmtree(output) |
| |
| return 0 |
| |
| |
| if __name__ == '__main__': |
| sys.exit(main()) |
