New command workspace list

lib/src/command/outdated.dart

@@ -4,7 +4,6 @@
 
 import 'dart:async';
 import 'dart:convert';
-import 'dart:math';
 
 import 'package:collection/collection.dart' show IterableExtension;
 import 'package:path/path.dart' as p;
@@ -15,6 +14,7 @@ import '../entrypoint.dart';
 import '../io.dart';
 import '../lock_file.dart';
 import '../log.dart' as log;
+import '../log.dart';
 import '../package.dart';
 import '../package_name.dart';
 import '../pubspec.dart';
@@ -552,8 +552,8 @@ Future<void> _outputHuman(
   final markedRows =
       Map.fromIterables(rows, await mode.markVersionDetails(rows));
 
-  List<_FormattedString> formatted(_PackageDetails package) => [
-        _FormattedString(package.name),
+  List<FormattedString> formatted(_PackageDetails package) => [
+        FormattedString(package.name),
         ...markedRows[package]!.map((m) => m.toHuman()),
       ];
 
@@ -575,64 +575,42 @@ Future<void> _outputHuman(
   final devTransitiveRows =
       rows.where(hasKind(_DependencyKind.devTransitive)).map(formatted);
 
-  final formattedRows = <List<_FormattedString>>[
+  final formattedRows = <List<FormattedString>>[
     ['Package Name', 'Current', 'Upgradable', 'Resolvable', 'Latest']
-        .map((s) => _format(s, log.bold))
+        .map((s) => format(s, log.bold))
         .toList(),
     if (hasDirectDependencies) ...[
       [
         if (directRows.isEmpty)
-          _format('\ndirect dependencies: ${mode.allGood}', log.bold)
+          format('\ndirect dependencies: ${mode.allGood}', log.bold)
         else
-          _format('\ndirect dependencies:', log.bold),
+          format('\ndirect dependencies:', log.bold),
       ],
       ...directRows,
     ],
     if (includeDevDependencies && hasDevDependencies) ...[
       [
         if (devRows.isEmpty)
-          _format('\ndev_dependencies: ${mode.allGood}', log.bold)
+          format('\ndev_dependencies: ${mode.allGood}', log.bold)
         else
-          _format('\ndev_dependencies:', log.bold),
+          format('\ndev_dependencies:', log.bold),
       ],
       ...devRows,
     ],
     if (showTransitiveDependencies) ...[
       if (transitiveRows.isNotEmpty)
-        [_format('\ntransitive dependencies:', log.bold)],
+        [format('\ntransitive dependencies:', log.bold)],
       ...transitiveRows,
       if (includeDevDependencies) ...[
         if (devTransitiveRows.isNotEmpty)
-          [_format('\ntransitive dev_dependencies:', log.bold)],
+          [format('\ntransitive dev_dependencies:', log.bold)],
         ...devTransitiveRows,
       ],
     ],
   ];
 
-  final columnWidths = <int, int>{};
-  for (var i = 0; i < formattedRows.length; i++) {
-    if (formattedRows[i].length > 1) {
-      for (var j = 0; j < formattedRows[i].length; j++) {
-        final currentMaxWidth = columnWidths[j] ?? 0;
-        columnWidths[j] = max(
-          formattedRows[i][j].computeLength(useColors: useColors),
-          currentMaxWidth,
-        );
-      }
-    }
-  }
-
-  for (final row in formattedRows) {
-    final b = StringBuffer();
-    for (var j = 0; j < row.length; j++) {
-      b.write(row[j].formatted(useColors: useColors));
-      b.write(
-        ' ' *
-            ((columnWidths[j]! + 2) -
-                row[j].computeLength(useColors: useColors)),
-      );
-    }
-    log.message(b.toString());
+  for (final line in log.renderTable(formattedRows, useColors)) {
+    log.message(line);
   }
 
   final upgradable = rows.where(
@@ -1016,16 +994,8 @@ enum _DependencyKind {
   devTransitive,
 }
 
-_FormattedString _format(
-  String value,
-  String Function(String) format, {
-  String? prefix = '',
-}) {
-  return _FormattedString(value, format: format, prefix: prefix);
-}
-
 abstract class _Details {
-  _FormattedString toHuman();
+  FormattedString toHuman();
   Object? toJson();
 }
 
@@ -1035,7 +1005,7 @@ class _SimpleDetails implements _Details {
   _SimpleDetails(this.details);
 
   @override
-  _FormattedString toHuman() => _FormattedString(details);
+  FormattedString toHuman() => FormattedString(details);
 
   @override
   Object? toJson() => null;
@@ -1060,7 +1030,7 @@ class _MarkedVersionDetails implements _Details {
         _jsonExplanation = jsonExplanation;
 
   @override
-  _FormattedString toHuman() => _FormattedString(
+  FormattedString toHuman() => FormattedString(
         _versionDetails?.describe ?? '-',
         format: _format,
         prefix: _prefix,
@@ -1078,39 +1048,6 @@ class _MarkedVersionDetails implements _Details {
   }
 }
 
-class _FormattedString {
-  final String value;
-
-  /// Should apply the ansi codes to present this string.
-  final String Function(String) _format;
-
-  /// A prefix for marking this string if colors are not used.
-  final String _prefix;
-
-  final String _suffix;
-
-  _FormattedString(
-    this.value, {
-    String Function(String)? format,
-    String? prefix,
-    String? suffix,
-  })  : _format = format ?? _noFormat,
-        _prefix = prefix ?? '',
-        _suffix = suffix ?? '';
-
-  String formatted({required bool useColors}) {
-    return useColors
-        ? _format(_prefix + value + _suffix)
-        : _prefix + value + _suffix;
-  }
-
-  int computeLength({required bool? useColors}) {
-    return _prefix.length + value.length + _suffix.length;
-  }
-
-  static String _noFormat(String x) => x;
-}
-
 /// Whether the package [name] is overridden anywhere in the workspace rooted at
 /// [workspaceRoot].
 bool hasOverride(Package workspaceRoot, String name) {

lib/src/command/workspace.dart

@@ -0,0 +1,18 @@
+// Copyright (c) 2024, 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 '../command.dart';
+import 'workspace_list.dart';
+
+class WorkspaceCommand extends PubCommand {
+  @override
+  String get description => 'Work with the pub workspace.';
+
+  @override
+  String get name => 'workspace';
+
+  WorkspaceCommand() {
+    addSubcommand(WorkspaceListCommand());
+  }
+}

lib/src/command/workspace_list.dart

@@ -0,0 +1,63 @@
+// Copyright (c) 2024, 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 '../command.dart';
+import '../log.dart';
+import '../utils.dart';
+
+class WorkspaceListCommand extends PubCommand {
+  @override
+  String get description =>
+      'List all packages in the workspace, and their directory';
+
+  @override
+  String get name => 'list';
+
+  WorkspaceListCommand() {
+    argParser.addFlag(
+      'json',
+      negatable: false,
+      help: 'output information in a json format',
+    );
+  }
+
+  @override
+  void runProtected() {
+    if (argResults.flag('json')) {
+      message(
+        const JsonEncoder.withIndent('  ').convert({
+          'packages': [
+            ...entrypoint.workspaceRoot.transitiveWorkspace.map(
+              (package) => {
+                'name': package.name,
+                'path': p.canonicalize(package.dir),
+              },
+            ),
+          ],
+        }),
+      );
+    } else {
+      for (final line in renderTable(
+        [
+          [format('Package', bold), format('Path', bold)],
+          for (final package in entrypoint.workspaceRoot.transitiveWorkspace)
+            [
+              format(package.name, (x) => x),
+              format(
+                '${p.relative(p.absolute(package.dir))}${p.separator}',
+                (x) => x,
+              ),
+            ],
+        ],
+        canUseAnsiCodes,
+      )) {
+        message(line);
+      }
+    }
+  }
+}

lib/src/command_runner.dart

@@ -28,6 +28,7 @@ import 'command/unpack.dart';
 import 'command/upgrade.dart';
 import 'command/uploader.dart';
 import 'command/version.dart';
+import 'command/workspace.dart';
 import 'exit_codes.dart' as exit_codes;
 import 'git.dart' as git;
 import 'io.dart';
@@ -156,6 +157,7 @@ class PubCommandRunner extends CommandRunner<int> implements PubTopLevel {
     addCommand(LoginCommand());
     addCommand(LogoutCommand());
     addCommand(VersionCommand());
+    addCommand(WorkspaceCommand());
     addCommand(TokenCommand());
   }
 

lib/src/log.dart

@@ -8,6 +8,7 @@ library;
 import 'dart:async';
 import 'dart:convert';
 import 'dart:io';
+import 'dart:math';
 
 import 'package:args/command_runner.dart';
 import 'package:path/path.dart' as p;
@@ -635,3 +636,80 @@ class _JsonLogger {
     stdout.writeln(jsonEncode(message));
   }
 }
+
+/// Represents a string and its highlighting separately, such that we can
+/// compute the displayed length.
+class FormattedString {
+  final String value;
+
+  /// Should apply the ansi codes to present this string.
+  final String Function(String) _format;
+
+  /// A prefix for marking this string if colors are not used.
+  final String _prefix;
+
+  final String _suffix;
+
+  FormattedString(
+    this.value, {
+    String Function(String)? format,
+    String? prefix,
+    String? suffix,
+  })  : _format = format ?? _noFormat,
+        _prefix = prefix ?? '',
+        _suffix = suffix ?? '';
+
+  String formatted({required bool useColors}) {
+    return useColors
+        ? _format(_prefix + value + _suffix)
+        : _prefix + value + _suffix;
+  }
+
+  int computeLength({required bool? useColors}) {
+    return _prefix.length + value.length + _suffix.length;
+  }
+
+  static String _noFormat(String x) => x;
+}
+
+FormattedString format(
+  String value,
+  String Function(String) format, {
+  String? prefix = '',
+}) =>
+    FormattedString(value, format: format, prefix: prefix);
+
+/// Formats a table of [rows], inserting enough spaces to make columns line up.
+List<String> renderTable(
+  List<List<FormattedString>> rows,
+  bool useColors,
+) {
+  // Compute the width of each column by taking the max across all rows.
+  final columnWidths = <int, int>{};
+  for (var i = 0; i < rows.length; i++) {
+    if (rows[i].length > 1) {
+      for (var j = 0; j < rows[i].length; j++) {
+        final currentMaxWidth = columnWidths[j] ?? 0;
+        columnWidths[j] = max(
+          rows[i][j].computeLength(useColors: useColors),
+          currentMaxWidth,
+        );
+      }
+    }
+  }
+
+  final result = <String>[];
+  for (final row in rows) {
+    final b = StringBuffer();
+    for (var j = 0; j < row.length; j++) {
+      b.write(row[j].formatted(useColors: useColors));
+      b.write(
+        ' ' *
+            ((columnWidths[j]! + 2) -
+                row[j].computeLength(useColors: useColors)),
+      );
+    }
+    result.add(b.toString());
+  }
+  return result;
+}

lib/src/pub_embeddable_command.dart

@@ -21,6 +21,7 @@ import 'command/token.dart';
 import 'command/unpack.dart';
 import 'command/upgrade.dart';
 import 'command/uploader.dart';
+import 'command/workspace.dart';
 import 'log.dart' as log;
 import 'log.dart';
 import 'utils.dart';
@@ -86,6 +87,7 @@ class PubEmbeddableCommand extends PubCommand implements PubTopLevel {
     addSubcommand(LoginCommand());
     addSubcommand(LogoutCommand());
     addSubcommand(TokenCommand());
+    addSubcommand(WorkspaceCommand());
   }
 
   @override