| #!/usr/bin/env python3 |
| # |
| # Copyright 2017 The Dart project authors. All rights reserved. |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| # Usage: tools/dart/create_updated_flutter_deps.py [-d dart/DEPS] [-f flutter/DEPS] |
| # |
| # This script parses existing flutter DEPS file, identifies all 'dart_' prefixed |
| # dependencies, looks up revision from dart DEPS file, updates those dependencies |
| # and rewrites flutter DEPS file. |
| |
| import argparse |
| import os |
| import sys |
| |
| DART_SCRIPT_DIR = os.path.dirname(sys.argv[0]) |
| DART_ROOT = os.path.realpath(os.path.join(DART_SCRIPT_DIR, '../../src/third_party/dart')) |
| FLUTTER_ROOT = os.path.realpath(os.path.join(DART_SCRIPT_DIR, '../../src/flutter')) |
| MONOREPO_ROOT = os.path.realpath(os.path.join(DART_SCRIPT_DIR, '..')) |
| |
| class VarImpl(object): |
| def __init__(self, local_scope): |
| self._local_scope = local_scope |
| |
| def Lookup(self, var_name): |
| """Implements the Var syntax.""" |
| if var_name in self._local_scope.get("vars", {}): |
| return self._local_scope["vars"][var_name] |
| if var_name == 'host_os': |
| return 'linux' # assume some default value |
| if var_name == 'host_cpu': |
| return 'x64' # assume some default value |
| raise Exception("Var is not defined: %s" % var_name) |
| |
| |
| def ParseDepsFile(deps_file): |
| local_scope = {} |
| var = VarImpl(local_scope) |
| global_scope = { |
| 'Var': var.Lookup, |
| 'deps_os': {}, |
| } |
| # Read the content. |
| with open(deps_file, 'r') as fp: |
| deps_content = fp.read() |
| |
| # Eval the content. |
| exec(deps_content, global_scope, local_scope) |
| |
| return (local_scope.get('vars', {}), local_scope.get('deps', {})) |
| |
| def ParseArgs(args): |
| args = args[1:] |
| parser = argparse.ArgumentParser( |
| description='A script to generate updated dart dependencies for flutter DEPS.') |
| parser.add_argument('--dart_deps', '-d', |
| type=str, |
| help='Dart DEPS file.', |
| default=os.path.join(DART_ROOT, 'DEPS')) |
| parser.add_argument('--flutter_deps', '-f', |
| type=str, |
| help='Flutter DEPS file.', |
| default=os.path.join(FLUTTER_ROOT, 'DEPS')) |
| parser.add_argument('--monorepo_deps', '-m', |
| type=str, |
| help='Monorepo DEPS file.', |
| default=os.path.join(MONOREPO_ROOT, 'DEPS')) |
| parser.add_argument('--create_monorepo', |
| action='store_true', |
| help='Create monorepo DEPS file') |
| parser.add_argument('--dart_commit', |
| type=str, |
| help='Set monorepo DEPS to check out this Dart commit.') |
| parser.add_argument('--engine_commit', |
| type=str, |
| help='Set monorepo DEPS to check out this engine commit.') |
| parser.add_argument('--flutter_commit', |
| type=str, |
| help='Set monorepo DEPS to check out this flutter commit.') |
| return parser.parse_args(args) |
| |
| def Main(argv): |
| args = ParseArgs(argv) |
| (new_vars, new_deps) = ParseDepsFile(args.dart_deps) |
| (old_vars, old_deps) = ParseDepsFile(args.flutter_deps) |
| output_file = args.monorepo_deps if args.create_monorepo else args.flutter_deps |
| |
| updated_vars = {} |
| |
| # Collect updated dependencies |
| for (k,v) in sorted(old_vars.items()): |
| if k not in ('dart_revision', 'dart_git') and k.startswith('dart_'): |
| dart_key = k[len('dart_'):] |
| if dart_key in new_vars: |
| updated_revision = new_vars[dart_key].lstrip('@') if dart_key in new_vars else v |
| updated_vars[k] = updated_revision |
| |
| # Write updated DEPS file to a side |
| updatedfilename = output_file + ".new" |
| updatedfile = open(updatedfilename, "w") |
| file = open(args.flutter_deps) |
| lines = file.readlines() |
| i = 0 |
| |
| create_monorepo = args.create_monorepo |
| # Track status of all rewrites |
| vars_updated = False |
| sdk_download = False |
| dart_pin = False |
| pinned_monorepo_deps = False |
| updated_dependencies = False |
| |
| while i < len(lines): |
| updatedfile.write(lines[i]) |
| if lines[i].startswith(" 'dart_revision':"): |
| vars_updated = True |
| i = i + 2 |
| updatedfile.writelines([ |
| '\n', |
| ' # WARNING: DO NOT EDIT MANUALLY\n', |
| ' # The lines between blank lines above and below are generated by a script. See create_updated_flutter_deps.py\n', |
| ' # The dart_revision line above is unused, a different revision is pinned below.\n']) |
| while i < len(lines) and len(lines[i].strip()) > 0: |
| i = i + 1 |
| for (k, v) in sorted(updated_vars.items()): |
| updatedfile.write(" '%s': '%s',\n" % (k, v)) |
| updatedfile.write('\n') |
| |
| elif (create_monorepo |
| and lines[i].startswith(' # Download a prebuilt Dart SDK by default') |
| and lines[i+1].startswith(" 'download_dart_sdk': True,")): |
| sdk_download = True |
| updatedfile.write(" 'download_dart_sdk': False,\n") |
| i = i + 1 |
| |
| elif (create_monorepo |
| and lines[i].startswith('deps = {') |
| and lines[i+1].startswith( |
| " 'src': 'https://github.com/flutter/buildroot.git' + '@' + ")): |
| pinned_monorepo_deps = True |
| i = i + 1 |
| updatedfile.write(lines[i]) |
| for dependency in [('src/flutter', 'flutter_git', '/mirrors/engine', args.engine_commit), |
| ('src/third_party/dart', 'dart_git', '/sdk', args.dart_commit), |
| ('flutter', 'flutter_git', '/mirrors/flutter', args.flutter_commit), |
| ]: |
| updatedfile.write("\n '%s': Var('%s') + '%s' + '@' + '%s',\n" % dependency) |
| |
| elif ( create_monorepo |
| and i < len(lines) - 3 |
| and lines[i] == '\n' |
| and lines[i+1] == " 'src/third_party/dart':\n" |
| and lines[i+2] == " Var('dart_git') + '/sdk.git' + '@' + Var('dart_revision'),\n"): |
| dart_pin = True |
| i = i + 3 |
| |
| elif lines[i].startswith(" # WARNING: Unused Dart dependencies"): |
| updated_dependencies = True |
| updatedfile.write('\n') |
| i = i + 1 |
| while i < len(lines) and (lines[i].startswith(" # WARNING: end of dart dependencies") == 0): |
| i = i + 1 |
| for (k, v) in sorted(old_deps.items()): |
| if (k.startswith('src/third_party/dart/')): |
| for (dart_k, dart_v) in (list(new_deps.items())): |
| dart_k_suffix = dart_k[len('sdk/') if dart_k.startswith('sdk/') else 0:] |
| if (k.endswith(dart_k_suffix)): |
| if (isinstance(dart_v, str)): |
| updated_value = dart_v.replace(new_vars["dart_git"], "Var('dart_git') + '/") |
| updated_value = updated_value.replace(old_vars["chromium_git"], "Var('chromium_git') + '") |
| |
| plain_v = dart_k[dart_k.rfind('/') + 1:] |
| # This dependency has to be special-cased here because the |
| # repository name is not the same as the directory name. |
| if plain_v == "quiver": |
| plain_v = "quiver-dart" |
| if ('dart_' + plain_v + '_tag' in updated_vars): |
| updated_value = updated_value[:updated_value.rfind('@')] + "' + '@' + Var('dart_" + plain_v + "_tag')" |
| elif ('dart_' + plain_v + '_rev' in updated_vars): |
| updated_value = updated_value[:updated_value.rfind('@')] + "' + '@' + Var('dart_" + plain_v + "_rev')" |
| else: |
| updated_value = updated_value + "'" |
| else: |
| # Non-string values(dicts) copy verbatim |
| updated_value = dart_v |
| |
| updatedfile.write(" '%s':\n %s,\n\n" % (k, updated_value)) |
| break |
| updatedfile.write(lines[i]) |
| i = i + 1 |
| |
| # Rename updated DEPS file into a new DEPS file |
| os.remove(output_file) |
| os.rename(updatedfilename, output_file) |
| |
| if create_monorepo and not (vars_updated and |
| sdk_download and |
| dart_pin and |
| pinned_monorepo_deps and |
| updated_dependencies ): |
| if not vars_updated: |
| print("Could not find 'dart_revision' line.") |
| if not sdk_download: |
| print("Could not set download_dart_sdk to False.") |
| if not dart_pin: |
| print("Could not remove 'src/third_party/dart' dependency line.") |
| if not pinned_monorepo_deps: |
| print("Could not add flutter, engine, and dart dependencies.") |
| if not updated_dependencies: |
| print("Could not update third_party dependencies.") |
| return 1 |
| return 0 |
| |
| if __name__ == '__main__': |
| sys.exit(Main(sys.argv)) |
