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Unified Diff: pkg/args/lib/args.dart

Issue 383913003: Add .wasParsed() to ArgResults. (Closed) Base URL: https://dart.googlecode.com/svn/branches/bleeding_edge/dart
Patch Set: Remove "-dev". Created 6 years, 5 months ago
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Index: pkg/args/lib/args.dart
diff --git a/pkg/args/lib/args.dart b/pkg/args/lib/args.dart
index ec40958991bc5a1a497cd26a652a0ead28016051..562df446a83b70b2ee229a6567a2f7a09ddf0387 100644
--- a/pkg/args/lib/args.dart
+++ b/pkg/args/lib/args.dart
@@ -4,176 +4,6 @@
library args;
-import 'package:collection/wrappers.dart';
-
-import 'src/parser.dart';
-import 'src/usage.dart';
-import 'src/options.dart';
-export 'src/options.dart';
-
-/// A class for taking a list of raw command line arguments and parsing out
-/// options and flags from them.
-class ArgParser {
- final Map<String, Option> _options;
- final Map<String, ArgParser> _commands;
-
- /// The options that have been defined for this parser.
- final Map<String, Option> options;
-
- /// The commands that have been defined for this parser.
- final Map<String, ArgParser> commands;
-
- /// Whether or not this parser parses options that appear after non-option
- /// arguments.
- final bool allowTrailingOptions;
-
- /// Creates a new ArgParser.
- ///
- /// If [allowTrailingOptions] is set, the parser will continue parsing even
- /// after it finds an argument that is neither an option nor a command.
- /// This allows options to be specified after regular arguments. Defaults to
- /// `false`.
- factory ArgParser({bool allowTrailingOptions}) =>
- new ArgParser._(<String, Option>{}, <String, ArgParser>{},
- allowTrailingOptions: allowTrailingOptions);
-
- ArgParser._(Map<String, Option> options, Map<String, ArgParser> commands,
- {bool allowTrailingOptions}) :
- this._options = options,
- this.options = new UnmodifiableMapView(options),
- this._commands = commands,
- this.commands = new UnmodifiableMapView(commands),
- this.allowTrailingOptions = allowTrailingOptions != null ?
- allowTrailingOptions : false;
-
- /// Defines a command.
- ///
- /// A command is a named argument which may in turn define its own options and
- /// subcommands using the given parser. If [parser] is omitted, implicitly
- /// creates a new one. Returns the parser for the command.
- ArgParser addCommand(String name, [ArgParser parser]) {
- // Make sure the name isn't in use.
- if (_commands.containsKey(name)) {
- throw new ArgumentError('Duplicate command "$name".');
- }
-
- if (parser == null) parser = new ArgParser();
- _commands[name] = parser;
- return parser;
- }
-
- /// Defines a flag. Throws an [ArgumentError] if:
- ///
- /// * There is already an option named [name].
- /// * There is already an option using abbreviation [abbr].
- void addFlag(String name, {String abbr, String help, bool defaultsTo: false,
- bool negatable: true, void callback(bool value), bool hide: false}) {
- _addOption(name, abbr, help, null, null, null, defaultsTo, callback,
- isFlag: true, negatable: negatable, hide: hide);
- }
-
- /// Defines a value-taking option. Throws an [ArgumentError] if:
- ///
- /// * There is already an option with name [name].
- /// * There is already an option using abbreviation [abbr].
- void addOption(String name, {String abbr, String help, String valueHelp,
- List<String> allowed, Map<String, String> allowedHelp, String defaultsTo,
- void callback(value), bool allowMultiple: false, bool hide: false}) {
- _addOption(name, abbr, help, valueHelp, allowed, allowedHelp, defaultsTo,
- callback, isFlag: false, allowMultiple: allowMultiple,
- hide: hide);
- }
-
- void _addOption(String name, String abbr, String help, String valueHelp,
- List<String> allowed, Map<String, String> allowedHelp, defaultsTo,
- void callback(value), {bool isFlag, bool negatable: false,
- bool allowMultiple: false, bool hide: false}) {
- // Make sure the name isn't in use.
- if (_options.containsKey(name)) {
- throw new ArgumentError('Duplicate option "$name".');
- }
-
- // Make sure the abbreviation isn't too long or in use.
- if (abbr != null) {
- var existing = findByAbbreviation(abbr);
- if (existing != null) {
- throw new ArgumentError(
- 'Abbreviation "$abbr" is already used by "${existing.name}".');
- }
- }
-
- _options[name] = new Option(name, abbr, help, valueHelp, allowed,
- allowedHelp, defaultsTo, callback, isFlag: isFlag, negatable: negatable,
- allowMultiple: allowMultiple, hide: hide);
- }
-
- /// Parses [args], a list of command-line arguments, matches them against the
- /// flags and options defined by this parser, and returns the result.
- ArgResults parse(List<String> args) =>
- new Parser(null, this, args.toList(), null, null).parse();
-
- /// Generates a string displaying usage information for the defined options.
- ///
- /// This is basically the help text shown on the command line.
- String getUsage() => new Usage(this).generate();
-
- /// Get the default value for an option. Useful after parsing to test if the
- /// user specified something other than the default.
- getDefault(String option) {
- if (!options.containsKey(option)) {
- throw new ArgumentError('No option named $option');
- }
- return options[option].defaultValue;
- }
-
- /// Finds the option whose abbreviation is [abbr], or `null` if no option has
- /// that abbreviation.
- Option findByAbbreviation(String abbr) {
- return options.values.firstWhere((option) => option.abbreviation == abbr,
- orElse: () => null);
- }
-}
-
-/// The results of parsing a series of command line arguments using
-/// [ArgParser.parse()].
-///
-/// Includes the parsed options and any remaining unparsed command line
-/// arguments.
-class ArgResults {
- final Map<String, dynamic> _options;
-
- /// If these are the results for parsing a command's options, this will be the
- /// name of the command. For top-level results, this returns `null`.
- final String name;
-
- /// The command that was selected, or `null` if none was.
- ///
- /// This will contain the options that were selected for that command.
- final ArgResults command;
-
- /// The remaining command-line arguments that were not parsed as options or
- /// flags.
- ///
- /// If `--` was used to separate the options from the remaining arguments,
- /// it will not be included in this list unless parsing stopped before the
- /// `--` was reached.
- final List<String> rest;
-
- /// Creates a new [ArgResults].
- ArgResults(this._options, this.name, this.command, List<String> rest)
- : this.rest = new UnmodifiableListView(rest);
-
- /// Gets the parsed command-line option named [name].
- operator [](String name) {
- if (!_options.containsKey(name)) {
- throw new ArgumentError(
- 'Could not find an option named "$name".');
- }
-
- return _options[name];
- }
-
- /// Get the names of the options as an [Iterable].
- Iterable<String> get options => _options.keys;
-}
-
+export 'src/arg_parser.dart';
+export 'src/arg_results.dart' hide newArgResults;
+export 'src/option.dart' hide newOption;
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