lib/src/package_config.dart - pub - Git at Google

 // Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.

 import 'dart:convert';

 import 'package:path/path.dart' as p;
 import 'package:pub_semver/pub_semver.dart';

 import 'language_version.dart';

 /// Contents of a `.dart_tool/package_config.json` file.
 class PackageConfig {
   /// Version of the configuration in the `.dart_tool/package_config.json` file.
   ///
   /// The only supported value as of writing is `2`.
   int configVersion;

   /// Packages configured.
   List<PackageConfigEntry> packages;

   /// Date-time the `.dart_tool/package_config.json` file was generated.
   ///
   /// `null` if not given.
   DateTime? generated;

   /// Tool that generated the `.dart_tool/package_config.json` file.
   ///
   /// For `pub` this is always `'pub'`.
   ///
   /// `null` if not given.
   String? generator;

   /// Version of the tool that generated the `.dart_tool/package_config.json`
   /// file.
   ///
   /// For `pub` this is the Dart SDK version from which `pub get` was called.
   ///
   /// `null` if not given.
   Version? generatorVersion;

   /// Additional properties not in the specification for the
   /// `.dart_tool/package_config.json` file.
   Map<String, dynamic> additionalProperties;

   PackageConfig({
     required this.configVersion,
     required this.packages,
     this.generated,
     this.generator,
     this.generatorVersion,
     Map<String, dynamic>? additionalProperties,
   }) : additionalProperties = additionalProperties ?? {};

   /// Create [PackageConfig] from JSON [data].
   ///
   /// Throws [FormatException], if format is invalid, this does not validate the
   /// contents only that the format is correct.
   factory PackageConfig.fromJson(Object data) {
     if (data is! Map<String, dynamic>) {
       throw FormatException('package_config.json must be a JSON object');
     }
     final root = data;

     void throwFormatException(String property, String mustBe) =>
         throw FormatException(
           '"$property" in .dart_tool/package_config.json $mustBe',
         );

     /// Read the 'configVersion' property
     final configVersion = root['configVersion'];
     if (configVersion is! int) {
       throwFormatException('configVersion', 'must be an integer');
     }
     if (configVersion != 2) {
       throwFormatException(
         'configVersion',
         'must be 2 (the only supported version)',
       );
     }

     final packagesRaw = root['packages'];
     if (packagesRaw is! List) {
       throwFormatException('packages', 'must be a list');
     }
     final packages = <PackageConfigEntry>[];
     for (final entry in packagesRaw) {
       packages.add(PackageConfigEntry.fromJson(entry));
     }

     // Read the 'generated' property
     DateTime? generated;
     final generatedRaw = root['generated'];
     if (generatedRaw != null) {
       if (generatedRaw is! String) {
         throwFormatException('generated', 'must be a string, if given');
       }
       generated = DateTime.parse(generatedRaw);
     }

     // Read the 'generator' property
     final generator = root['generator'];
     if (generator != null && generator is! String) {
       throw FormatException(
         '"generator" in package_config.json must be a string, if given',
       );
     }

     // Read the 'generatorVersion' property
     Version? generatorVersion;
     final generatorVersionRaw = root['generatorVersion'];
     if (generatorVersionRaw != null) {
       if (generatorVersionRaw is! String) {
         throwFormatException('generatorVersion', 'must be a string, if given');
       }
       try {
         generatorVersion = Version.parse(generatorVersionRaw);
       } on FormatException catch (e) {
         throwFormatException(
           'generatorVersion',
           'must be a semver version, if given, error: ${e.message}',
         );
       }
     }

     return PackageConfig(
       configVersion: configVersion as int,
       packages: packages,
       generated: generated,
       generator: generator,
       generatorVersion: generatorVersion,
       additionalProperties: Map.fromEntries(
         root.entries.where(
           (e) => !{
             'configVersion',
             'packages',
             'generated',
             'generator',
             'generatorVersion',
           }.contains(e.key),
         ),
       ),
     );
   }

   /// Convert to JSON structure.
   Map<String, Object?> toJson() => {
         'configVersion': configVersion,
         'packages': packages.map((p) => p.toJson()).toList(),
         'generated': generated?.toUtc().toIso8601String(),
         'generator': generator,
         'generatorVersion': generatorVersion?.toString(),
       }..addAll(additionalProperties);

   // We allow the package called 'flutter_gen' to be injected into
   // package_config.
   //
   // This is somewhat a hack. But it allows flutter to generate code in a
   // package as it likes.
   //
   // See https://github.com/flutter/flutter/issues/73870 .
   Iterable<PackageConfigEntry> get nonInjectedPackages =>
       packages.where((package) => package.name != 'flutter_gen');
 }

 class PackageConfigEntry {
   /// Package name.
   String name;

   /// Root [Uri] of the package.
   ///
   /// This specifies the root folder of the package, all files below this folder
   /// is considered part of this package.
   Uri rootUri;

   /// Relative URI path of the library folder relative to [rootUri].
   ///
   /// Import statements in Dart programs are resolved relative to this folder.
   /// This must be in the sub-tree under [rootUri].
   ///
   /// `null` if not given.
   Uri? packageUri;

   /// Language version used by package.
   ///
   /// Given as `<major>.<minor>` version, similar to the `// @dart = X.Y`
   /// comment. This is derived from the lower-bound on the Dart SDK requirement
   /// in the `pubspec.yaml` for the given package.
   LanguageVersion? languageVersion;

   /// Additional properties not in the specification for the
   /// `.dart_tool/package_config.json` file.
   Map<String, dynamic>? additionalProperties;

   PackageConfigEntry({
     required this.name,
     required this.rootUri,
     this.packageUri,
     this.languageVersion,
     this.additionalProperties = const {},
   });

   /// Create [PackageConfigEntry] from JSON [data].
   ///
   /// Throws [FormatException], if format is invalid, this does not validate the
   /// contents only that the format is correct.
   factory PackageConfigEntry.fromJson(Object data) {
     if (data is! Map<String, dynamic>) {
       throw FormatException(
         'packages[] entries in package_config.json must be JSON objects',
       );
     }
     final root = data;

     Never throwFormatException(String property, String mustBe) =>
         throw FormatException(
           '"packages[].$property" in .dart_tool/package_config.json $mustBe',
         );

     final name = root['name'];
     if (name is! String) {
       throwFormatException('name', 'must be a string');
     }

     final Uri rootUri;
     final rootUriRaw = root['rootUri'];
     if (rootUriRaw is! String) {
       throwFormatException('rootUri', 'must be a string');
     }
     try {
       rootUri = Uri.parse(rootUriRaw);
     } on FormatException {
       throwFormatException('rootUri', 'must be a URI');
     }

     Uri? packageUri;
     var packageUriRaw = root['packageUri'];
     if (packageUriRaw != null) {
       if (packageUriRaw is! String) {
         throwFormatException('packageUri', 'must be a string');
       }
       if (!packageUriRaw.endsWith('/')) {
         packageUriRaw = '$packageUriRaw/';
       }
       try {
         packageUri = Uri.parse(packageUriRaw);
       } on FormatException {
         throwFormatException('packageUri', 'must be a URI');
       }
     }

     LanguageVersion? languageVersion;
     final languageVersionRaw = root['languageVersion'];
     if (languageVersionRaw != null) {
       if (languageVersionRaw is! String) {
         throwFormatException('languageVersion', 'must be a string');
       }
       try {
         languageVersion = LanguageVersion.parse(languageVersionRaw);
       } on FormatException {
         throwFormatException(
           'languageVersion',
           'must be on the form <major>.<minor>',
         );
       }
     }

     return PackageConfigEntry(
       name: name,
       rootUri: rootUri,
       packageUri: packageUri,
       languageVersion: languageVersion,
     );
   }

   /// Convert to JSON structure.
   Map<String, Object?> toJson() => {
         'name': name,
         'rootUri': rootUri.toString(),
         if (packageUri != null) 'packageUri': packageUri.toString(),
         if (languageVersion != null) 'languageVersion': '$languageVersion',
       }..addAll(additionalProperties ?? {});

   @override
   String toString() {
     // TODO: implement toString
     return JsonEncoder.withIndent('  ').convert(toJson());
   }

   String resolvedRootDir(String packageConfigPath) {
     return p.join(p.dirname(packageConfigPath), p.fromUri(rootUri));
   }
 }
	// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file
	// for details. All rights reserved. Use of this source code is governed by a
	// BSD-style license that can be found in the LICENSE file.

	import 'dart:convert';

	import 'package:path/path.dart' as p;
	import 'package:pub_semver/pub_semver.dart';

	import 'language_version.dart';

	/// Contents of a `.dart_tool/package_config.json` file.
	class PackageConfig {
	/// Version of the configuration in the `.dart_tool/package_config.json` file.
	///
	/// The only supported value as of writing is `2`.
	int configVersion;

	/// Packages configured.
	List<PackageConfigEntry> packages;

	/// Date-time the `.dart_tool/package_config.json` file was generated.
	///
	/// `null` if not given.
	DateTime? generated;

	/// Tool that generated the `.dart_tool/package_config.json` file.
	///
	/// For `pub` this is always `'pub'`.
	///
	/// `null` if not given.
	String? generator;

	/// Version of the tool that generated the `.dart_tool/package_config.json`
	/// file.
	///
	/// For `pub` this is the Dart SDK version from which `pub get` was called.
	///
	/// `null` if not given.
	Version? generatorVersion;

	/// Additional properties not in the specification for the
	/// `.dart_tool/package_config.json` file.
	Map<String, dynamic> additionalProperties;

	PackageConfig({
	required this.configVersion,
	required this.packages,
	this.generated,
	this.generator,
	this.generatorVersion,
	Map<String, dynamic>? additionalProperties,
	}) : additionalProperties = additionalProperties ?? {};

	/// Create [PackageConfig] from JSON [data].
	///
	/// Throws [FormatException], if format is invalid, this does not validate the
	/// contents only that the format is correct.
	factory PackageConfig.fromJson(Object data) {
	if (data is! Map<String, dynamic>) {
	throw FormatException('package_config.json must be a JSON object');
	}
	final root = data;

	void throwFormatException(String property, String mustBe) =>
	throw FormatException(
	'"$property" in .dart_tool/package_config.json $mustBe',
	);

	/// Read the 'configVersion' property
	final configVersion = root['configVersion'];
	if (configVersion is! int) {
	throwFormatException('configVersion', 'must be an integer');
	}
	if (configVersion != 2) {
	throwFormatException(
	'configVersion',
	'must be 2 (the only supported version)',
	);
	}

	final packagesRaw = root['packages'];
	if (packagesRaw is! List) {
	throwFormatException('packages', 'must be a list');
	}
	final packages = <PackageConfigEntry>[];
	for (final entry in packagesRaw) {
	packages.add(PackageConfigEntry.fromJson(entry));
	}

	// Read the 'generated' property
	DateTime? generated;
	final generatedRaw = root['generated'];
	if (generatedRaw != null) {
	if (generatedRaw is! String) {
	throwFormatException('generated', 'must be a string, if given');
	}
	generated = DateTime.parse(generatedRaw);
	}

	// Read the 'generator' property
	final generator = root['generator'];
	if (generator != null && generator is! String) {
	throw FormatException(
	'"generator" in package_config.json must be a string, if given',
	);
	}

	// Read the 'generatorVersion' property
	Version? generatorVersion;
	final generatorVersionRaw = root['generatorVersion'];
	if (generatorVersionRaw != null) {
	if (generatorVersionRaw is! String) {
	throwFormatException('generatorVersion', 'must be a string, if given');
	}
	try {
	generatorVersion = Version.parse(generatorVersionRaw);
	} on FormatException catch (e) {
	throwFormatException(
	'generatorVersion',
	'must be a semver version, if given, error: ${e.message}',
	);
	}
	}

	return PackageConfig(
	configVersion: configVersion as int,
	packages: packages,
	generated: generated,
	generator: generator,
	generatorVersion: generatorVersion,
	additionalProperties: Map.fromEntries(
	root.entries.where(
	(e) => !{
	'configVersion',
	'packages',
	'generated',
	'generator',
	'generatorVersion',
	}.contains(e.key),
	),
	),
	);
	}

	/// Convert to JSON structure.
	Map<String, Object?> toJson() => {
	'configVersion': configVersion,
	'packages': packages.map((p) => p.toJson()).toList(),
	'generated': generated?.toUtc().toIso8601String(),
	'generator': generator,
	'generatorVersion': generatorVersion?.toString(),
	}..addAll(additionalProperties);

	// We allow the package called 'flutter_gen' to be injected into
	// package_config.
	//
	// This is somewhat a hack. But it allows flutter to generate code in a
	// package as it likes.
	//
	// See https://github.com/flutter/flutter/issues/73870 .
	Iterable<PackageConfigEntry> get nonInjectedPackages =>
	packages.where((package) => package.name != 'flutter_gen');
	}

	class PackageConfigEntry {
	/// Package name.
	String name;

	/// Root [Uri] of the package.
	///
	/// This specifies the root folder of the package, all files below this folder
	/// is considered part of this package.
	Uri rootUri;

	/// Relative URI path of the library folder relative to [rootUri].
	///
	/// Import statements in Dart programs are resolved relative to this folder.
	/// This must be in the sub-tree under [rootUri].
	///
	/// `null` if not given.
	Uri? packageUri;

	/// Language version used by package.
	///
	/// Given as `<major>.<minor>` version, similar to the `// @dart = X.Y`
	/// comment. This is derived from the lower-bound on the Dart SDK requirement
	/// in the `pubspec.yaml` for the given package.
	LanguageVersion? languageVersion;

	/// Additional properties not in the specification for the
	/// `.dart_tool/package_config.json` file.
	Map<String, dynamic>? additionalProperties;

	PackageConfigEntry({
	required this.name,
	required this.rootUri,
	this.packageUri,
	this.languageVersion,
	this.additionalProperties = const {},
	});

	/// Create [PackageConfigEntry] from JSON [data].
	///
	/// Throws [FormatException], if format is invalid, this does not validate the
	/// contents only that the format is correct.
	factory PackageConfigEntry.fromJson(Object data) {
	if (data is! Map<String, dynamic>) {
	throw FormatException(
	'packages[] entries in package_config.json must be JSON objects',
	);
	}
	final root = data;

	Never throwFormatException(String property, String mustBe) =>
	throw FormatException(
	'"packages[].$property" in .dart_tool/package_config.json $mustBe',
	);

	final name = root['name'];
	if (name is! String) {
	throwFormatException('name', 'must be a string');
	}

	final Uri rootUri;
	final rootUriRaw = root['rootUri'];
	if (rootUriRaw is! String) {
	throwFormatException('rootUri', 'must be a string');
	}
	try {
	rootUri = Uri.parse(rootUriRaw);
	} on FormatException {
	throwFormatException('rootUri', 'must be a URI');
	}

	Uri? packageUri;
	var packageUriRaw = root['packageUri'];
	if (packageUriRaw != null) {
	if (packageUriRaw is! String) {
	throwFormatException('packageUri', 'must be a string');
	}
	if (!packageUriRaw.endsWith('/')) {
	packageUriRaw = '$packageUriRaw/';
	}
	try {
	packageUri = Uri.parse(packageUriRaw);
	} on FormatException {
	throwFormatException('packageUri', 'must be a URI');
	}
	}

	LanguageVersion? languageVersion;
	final languageVersionRaw = root['languageVersion'];
	if (languageVersionRaw != null) {
	if (languageVersionRaw is! String) {
	throwFormatException('languageVersion', 'must be a string');
	}
	try {
	languageVersion = LanguageVersion.parse(languageVersionRaw);
	} on FormatException {
	throwFormatException(
	'languageVersion',
	'must be on the form <major>.<minor>',
	);
	}
	}

	return PackageConfigEntry(
	name: name,
	rootUri: rootUri,
	packageUri: packageUri,
	languageVersion: languageVersion,
	);
	}

	/// Convert to JSON structure.
	Map<String, Object?> toJson() => {
	'name': name,
	'rootUri': rootUri.toString(),
	if (packageUri != null) 'packageUri': packageUri.toString(),
	if (languageVersion != null) 'languageVersion': '$languageVersion',
	}..addAll(additionalProperties ?? {});

	@override
	String toString() {
	// TODO: implement toString
	return JsonEncoder.withIndent(' ').convert(toJson());
	}

	String resolvedRootDir(String packageConfigPath) {
	return p.join(p.dirname(packageConfigPath), p.fromUri(rootUri));
	}
	}