sdk/lib/_internal/pub_generated/lib/src/command/build.dart - sdk - Git at Google

 // Copyright (c) 2013, 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.

 library pub.command.build;

 import 'dart:async';

 import 'package:barback/barback.dart';
 import 'package:path/path.dart' as path;

 import '../barback/asset_environment.dart';
 import '../exit_codes.dart' as exit_codes;
 import '../io.dart';
 import '../log.dart' as log;
 import '../utils.dart';
 import 'barback.dart';

 final _arrow = getSpecial('\u2192', '=>');

 /// Handles the `build` pub command.
 class BuildCommand extends BarbackCommand {
   String get description => "Apply transformers to build a package.";
   String get usage => "pub build [options] [directories...]";
   String get docUrl => "http://dartlang.org/tools/pub/cmd/pub-build.html";
   List<String> get aliases => const ["deploy", "settle-up"];

   /// The path to the application's build output directory.
   String get outputDirectory => commandOptions["output"];

   List<String> get defaultSourceDirectories => ["web"];

   /// The number of files that have been built and written to disc so far.
   int builtFiles = 0;

   BuildCommand() {
     commandParser.addOption(
         "format",
         help: "How output should be displayed.",
         allowed: ["text", "json"],
         defaultsTo: "text");

     commandParser.addOption(
         "output",
         abbr: "o",
         help: "Directory to write build outputs to.",
         defaultsTo: "build");
   }

   Future onRunTransformerCommand() {
     final completer0 = new Completer();
     scheduleMicrotask(() {
       try {
         cleanDir(outputDirectory);
         var errorsJson = [];
         var logJson = [];
         completer0.complete(
             AssetEnvironment.create(
                 entrypoint,
                 mode,
                 useDart2JS: true).then(((environment) {
           environment.barback.errors.listen((error) {
             log.error(log.red("Build error:\n$error"));
             if (log.json.enabled) {
               errorsJson.add({
                 "error": error.toString()
               });
             }
           });
           if (log.json.enabled) {
             environment.barback.log.listen(
                 (entry) => logJson.add(_logEntryToJson(entry)));
           }
           return log.progress("Building ${entrypoint.root.name}", () {
             return Future.wait(
                 sourceDirectories.map((dir) => environment.serveDirectory(dir))).then((_) {
               return environment.barback.getAllAssets();
             });
           }).then((assets) {
             var dart2JSEntrypoints = assets.where(
                 (asset) => asset.id.path.endsWith(".dart.js")).map((asset) => asset.id);
             return Future.wait(assets.map(_writeAsset)).then((_) {
               builtFiles += _copyBrowserJsFiles(dart2JSEntrypoints);
               log.message(
                   'Built $builtFiles ${pluralize('file', builtFiles)} ' 'to "$outputDirectory".');
               log.json.message({
                 "buildResult": "success",
                 "outputDirectory": outputDirectory,
                 "numFiles": builtFiles,
                 "log": logJson
               });
             });
           });
         })).catchError(((error) {
           if (error is! BarbackException) throw error;
           log.error(log.red("Build failed."));
           log.json.message({
             "buildResult": "failure",
             "errors": errorsJson,
             "log": logJson
           });
           return flushThenExit(exit_codes.DATA);
         })));
       } catch (e, s) {
         completer0.completeError(e, s);
       }
     });
     return completer0.future;
   }

   /// Writes [asset] to the appropriate build directory.
   ///
   /// If [asset] is in the special "packages" directory, writes it to every
   /// build directory.
   Future _writeAsset(Asset asset) {
     final completer0 = new Completer();
     scheduleMicrotask(() {
       try {
         join0() {
           var destPath = _idToPath(asset.id);
           join1() {
             completer0.complete(_writeOutputFile(asset, destPath));
           }
           if (path.isWithin("packages", destPath)) {
             completer0.complete(Future.wait(sourceDirectories.map(((buildDir) {
               return _writeOutputFile(asset, path.join(buildDir, destPath));
             }))));
           } else {
             join1();
           }
         }
         if (mode == BarbackMode.RELEASE && asset.id.extension == ".dart") {
           completer0.complete(null);
         } else {
           join0();
         }
       } catch (e, s) {
         completer0.completeError(e, s);
       }
     });
     return completer0.future;
   }

   /// Converts [id] to a relative path in the output directory for that asset.
   ///
   /// This corresponds to the URL that could be used to request that asset from
   /// pub serve.
   ///
   /// Examples (where entrypoint is "myapp"):
   ///
   ///     myapp|web/index.html   -> web/index.html
   ///     myapp|lib/lib.dart     -> packages/myapp/lib.dart
   ///     foo|lib/foo.dart       -> packages/foo/foo.dart
   ///     myapp|test/main.dart   -> test/main.dart
   ///     foo|test/main.dart     -> ERROR
   ///
   /// Throws a [FormatException] if [id] is not a valid public asset.
   String _idToPath(AssetId id) {
     var parts = path.split(path.fromUri(id.path));

     if (parts.length < 2) {
       throw new FormatException(
           "Can not build assets from top-level directory.");
     }

     // Map "lib" to the "packages" directory.
     if (parts[0] == "lib") {
       return path.join("packages", id.package, path.joinAll(parts.skip(1)));
     }

     // Shouldn't be trying to access non-public directories of other packages.
     assert(id.package == entrypoint.root.name);

     // Allow any path in the entrypoint package.
     return path.joinAll(parts);
   }

   /// Writes the contents of [asset] to [relativePath] within the build
   /// directory.
   Future _writeOutputFile(Asset asset, String relativePath) {
     builtFiles++;
     var destPath = path.join(outputDirectory, relativePath);
     ensureDir(path.dirname(destPath));
     return createFileFromStream(asset.read(), destPath);
   }

   /// If this package depends directly on the `browser` package, this ensures
   /// that the JavaScript bootstrap files are copied into `packages/browser/`
   /// directories next to each entrypoint in [entrypoints].
   ///
   /// Returns the number of files it copied.
   int _copyBrowserJsFiles(Iterable<AssetId> entrypoints) {
     // Must depend on the browser package.
     if (!entrypoint.root.immediateDependencies.any(
         (dep) => dep.name == 'browser' && dep.source == 'hosted')) {
       return 0;
     }

     // Get all of the subdirectories that contain Dart entrypoints.
     var entrypointDirs =
         entrypoints// Convert the asset path to a native-separated one and get the
     // directory containing the entrypoint.
     .map(
         (id) =>
             path.dirname(
                 path.fromUri(
                     id.path)))// Don't copy files to the top levels of the build directories since
     // the normal lib asset copying will take care of that.
     .where((dir) => path.split(dir).length > 1).toSet();

     for (var dir in entrypointDirs) {
       // TODO(nweiz): we should put browser JS files next to any HTML file
       // rather than any entrypoint. An HTML file could import an entrypoint
       // that's not adjacent.
       _addBrowserJs(dir, "dart");
       _addBrowserJs(dir, "interop");
     }

     return entrypointDirs.length * 2;
   }

   // TODO(nweiz): do something more principled when issue 6101 is fixed.
   /// Ensures that the [name].js file is copied into [directory] in [target],
   /// under `packages/browser/`.
   void _addBrowserJs(String directory, String name) {
     var jsPath = entrypoint.root.path(
         outputDirectory,
         directory,
         'packages',
         'browser',
         '$name.js');
     ensureDir(path.dirname(jsPath));

     // TODO(rnystrom): This won't work if we get rid of symlinks and the top
     // level "packages" directory. Will need to copy from the browser
     // directory.
     copyFile(path.join(entrypoint.packagesDir, 'browser', '$name.js'), jsPath);
   }

   /// Converts [entry] to a JSON object for use with JSON-formatted output.
   Map _logEntryToJson(LogEntry entry) {
     var data = {
       "level": entry.level.name,
       "transformer": {
         "name": entry.transform.transformer.toString(),
         "primaryInput": {
           "package": entry.transform.primaryId.package,
           "path": entry.transform.primaryId.path
         },
       },
       "assetId": {
         "package": entry.assetId.package,
         "path": entry.assetId.path
       },
       "message": entry.message
     };

     if (entry.span != null) {
       data["span"] = {
         "url": entry.span.sourceUrl,
         "start": {
           "line": entry.span.start.line,
           "column": entry.span.start.column
         },
         "end": {
           "line": entry.span.end.line,
           "column": entry.span.end.column
         },
       };
     }

     return data;
   }
 }
	// Copyright (c) 2013, 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.

	library pub.command.build;

	import 'dart:async';

	import 'package:barback/barback.dart';
	import 'package:path/path.dart' as path;

	import '../barback/asset_environment.dart';
	import '../exit_codes.dart' as exit_codes;
	import '../io.dart';
	import '../log.dart' as log;
	import '../utils.dart';
	import 'barback.dart';

	final _arrow = getSpecial('\u2192', '=>');

	/// Handles the `build` pub command.
	class BuildCommand extends BarbackCommand {
	String get description => "Apply transformers to build a package.";
	String get usage => "pub build [options] [directories...]";
	String get docUrl => "http://dartlang.org/tools/pub/cmd/pub-build.html";
	List<String> get aliases => const ["deploy", "settle-up"];

	/// The path to the application's build output directory.
	String get outputDirectory => commandOptions["output"];

	List<String> get defaultSourceDirectories => ["web"];

	/// The number of files that have been built and written to disc so far.
	int builtFiles = 0;

	BuildCommand() {
	commandParser.addOption(
	"format",
	help: "How output should be displayed.",
	allowed: ["text", "json"],
	defaultsTo: "text");

	commandParser.addOption(
	"output",
	abbr: "o",
	help: "Directory to write build outputs to.",
	defaultsTo: "build");
	}

	Future onRunTransformerCommand() {
	final completer0 = new Completer();
	scheduleMicrotask(() {
	try {
	cleanDir(outputDirectory);
	var errorsJson = [];
	var logJson = [];
	completer0.complete(
	AssetEnvironment.create(
	entrypoint,
	mode,
	useDart2JS: true).then(((environment) {
	environment.barback.errors.listen((error) {
	log.error(log.red("Build error:\n$error"));
	if (log.json.enabled) {
	errorsJson.add({
	"error": error.toString()
	});
	}
	});
	if (log.json.enabled) {
	environment.barback.log.listen(
	(entry) => logJson.add(_logEntryToJson(entry)));
	}
	return log.progress("Building ${entrypoint.root.name}", () {
	return Future.wait(
	sourceDirectories.map((dir) => environment.serveDirectory(dir))).then((_) {
	return environment.barback.getAllAssets();
	});
	}).then((assets) {
	var dart2JSEntrypoints = assets.where(
	(asset) => asset.id.path.endsWith(".dart.js")).map((asset) => asset.id);
	return Future.wait(assets.map(_writeAsset)).then((_) {
	builtFiles += _copyBrowserJsFiles(dart2JSEntrypoints);
	log.message(
	'Built $builtFiles ${pluralize('file', builtFiles)} ' 'to "$outputDirectory".');
	log.json.message({
	"buildResult": "success",
	"outputDirectory": outputDirectory,
	"numFiles": builtFiles,
	"log": logJson
	});
	});
	});
	})).catchError(((error) {
	if (error is! BarbackException) throw error;
	log.error(log.red("Build failed."));
	log.json.message({
	"buildResult": "failure",
	"errors": errorsJson,
	"log": logJson
	});
	return flushThenExit(exit_codes.DATA);
	})));
	} catch (e, s) {
	completer0.completeError(e, s);
	}
	});
	return completer0.future;
	}

	/// Writes [asset] to the appropriate build directory.
	///
	/// If [asset] is in the special "packages" directory, writes it to every
	/// build directory.
	Future _writeAsset(Asset asset) {
	final completer0 = new Completer();
	scheduleMicrotask(() {
	try {
	join0() {
	var destPath = _idToPath(asset.id);
	join1() {
	completer0.complete(_writeOutputFile(asset, destPath));
	}
	if (path.isWithin("packages", destPath)) {
	completer0.complete(Future.wait(sourceDirectories.map(((buildDir) {
	return _writeOutputFile(asset, path.join(buildDir, destPath));
	}))));
	} else {
	join1();
	}
	}
	if (mode == BarbackMode.RELEASE && asset.id.extension == ".dart") {
	completer0.complete(null);
	} else {
	join0();
	}
	} catch (e, s) {
	completer0.completeError(e, s);
	}
	});
	return completer0.future;
	}

	/// Converts [id] to a relative path in the output directory for that asset.
	///
	/// This corresponds to the URL that could be used to request that asset from
	/// pub serve.
	///
	/// Examples (where entrypoint is "myapp"):
	///
	/// myapp\|web/index.html -> web/index.html
	/// myapp\|lib/lib.dart -> packages/myapp/lib.dart
	/// foo\|lib/foo.dart -> packages/foo/foo.dart
	/// myapp\|test/main.dart -> test/main.dart
	/// foo\|test/main.dart -> ERROR
	///
	/// Throws a [FormatException] if [id] is not a valid public asset.
	String _idToPath(AssetId id) {
	var parts = path.split(path.fromUri(id.path));

	if (parts.length < 2) {
	throw new FormatException(
	"Can not build assets from top-level directory.");
	}

	// Map "lib" to the "packages" directory.
	if (parts[0] == "lib") {
	return path.join("packages", id.package, path.joinAll(parts.skip(1)));
	}

	// Shouldn't be trying to access non-public directories of other packages.
	assert(id.package == entrypoint.root.name);

	// Allow any path in the entrypoint package.
	return path.joinAll(parts);
	}

	/// Writes the contents of [asset] to [relativePath] within the build
	/// directory.
	Future _writeOutputFile(Asset asset, String relativePath) {
	builtFiles++;
	var destPath = path.join(outputDirectory, relativePath);
	ensureDir(path.dirname(destPath));
	return createFileFromStream(asset.read(), destPath);
	}

	/// If this package depends directly on the `browser` package, this ensures
	/// that the JavaScript bootstrap files are copied into `packages/browser/`
	/// directories next to each entrypoint in [entrypoints].
	///
	/// Returns the number of files it copied.
	int _copyBrowserJsFiles(Iterable<AssetId> entrypoints) {
	// Must depend on the browser package.
	if (!entrypoint.root.immediateDependencies.any(
	(dep) => dep.name == 'browser' && dep.source == 'hosted')) {
	return 0;
	}

	// Get all of the subdirectories that contain Dart entrypoints.
	var entrypointDirs =
	entrypoints// Convert the asset path to a native-separated one and get the
	// directory containing the entrypoint.
	.map(
	(id) =>
	path.dirname(
	path.fromUri(
	id.path)))// Don't copy files to the top levels of the build directories since
	// the normal lib asset copying will take care of that.
	.where((dir) => path.split(dir).length > 1).toSet();

	for (var dir in entrypointDirs) {
	// TODO(nweiz): we should put browser JS files next to any HTML file
	// rather than any entrypoint. An HTML file could import an entrypoint
	// that's not adjacent.
	_addBrowserJs(dir, "dart");
	_addBrowserJs(dir, "interop");
	}

	return entrypointDirs.length * 2;
	}

	// TODO(nweiz): do something more principled when issue 6101 is fixed.
	/// Ensures that the [name].js file is copied into [directory] in [target],
	/// under `packages/browser/`.
	void _addBrowserJs(String directory, String name) {
	var jsPath = entrypoint.root.path(
	outputDirectory,
	directory,
	'packages',
	'browser',
	'$name.js');
	ensureDir(path.dirname(jsPath));

	// TODO(rnystrom): This won't work if we get rid of symlinks and the top
	// level "packages" directory. Will need to copy from the browser
	// directory.
	copyFile(path.join(entrypoint.packagesDir, 'browser', '$name.js'), jsPath);
	}

	/// Converts [entry] to a JSON object for use with JSON-formatted output.
	Map _logEntryToJson(LogEntry entry) {
	var data = {
	"level": entry.level.name,
	"transformer": {
	"name": entry.transform.transformer.toString(),
	"primaryInput": {
	"package": entry.transform.primaryId.package,
	"path": entry.transform.primaryId.path
	},
	},
	"assetId": {
	"package": entry.assetId.package,
	"path": entry.assetId.path
	},
	"message": entry.message
	};

	if (entry.span != null) {
	data["span"] = {
	"url": entry.span.sourceUrl,
	"start": {
	"line": entry.span.start.line,
	"column": entry.span.start.column
	},
	"end": {
	"line": entry.span.end.line,
	"column": entry.span.end.column
	},
	};
	}

	return data;
	}
	}