1415 строки
38 KiB
C#
1415 строки
38 KiB
C#
//
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// Options.cs
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//
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// Authors:
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// Jonathan Pryor <jpryor@novell.com>
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// Federico Di Gregorio <fog@initd.org>
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// Rolf Bjarne Kvinge <rolf@xamarin.com>
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//
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// Copyright (C) 2008 Novell (http://www.novell.com)
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// Copyright (C) 2009 Federico Di Gregorio.
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// Copyright (C) 2012 Xamarin Inc (http://www.xamarin.com)
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// Copyright (C) 2015 Tobias Schulz (https://github.com/tobiasschulz)
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//
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// Permission is hereby granted, free of charge, to any person obtaining
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// a copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to
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// permit persons to whom the Software is furnished to do so, subject to
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// the following conditions:
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//
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// The above copyright notice and this permission notice shall be
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// included in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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//
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// Compile With:
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// gmcs -debug+ -r:System.Core Options.cs -o:NDesk.Options.dll
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// gmcs -debug+ -d:LINQ -r:System.Core Options.cs -o:NDesk.Options.dll
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//
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// The LINQ version just changes the implementation of
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// OptionSet.Parse(IEnumerable<string>), and confers no semantic changes.
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//
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// A Getopt::Long-inspired option parsing library for C#.
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//
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// NDesk.Options.OptionSet is built upon a key/value table, where the
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// key is a option format string and the value is a delegate that is
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// invoked when the format string is matched.
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//
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// Option format strings:
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// Regex-like BNF Grammar:
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// name: .+
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// type: [=:]
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// sep: ( [^{}]+ | '{' .+ '}' )?
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// aliases: ( name type sep ) ( '|' name type sep )*
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//
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// Each '|'-delimited name is an alias for the associated action. If the
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// format string ends in a '=', it has a required value. If the format
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// string ends in a ':', it has an optional value. If neither '=' or ':'
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// is present, no value is supported. `=' or `:' need only be defined on one
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// alias, but if they are provided on more than one they must be consistent.
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//
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// Each alias portion may also end with a "key/value separator", which is used
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// to split option values if the option accepts > 1 value. If not specified,
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// it defaults to '=' and ':'. If specified, it can be any character except
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// '{' and '}' OR the *string* between '{' and '}'. If no separator should be
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// used (i.e. the separate values should be distinct arguments), then "{}"
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// should be used as the separator.
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//
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// Options are extracted either from the current option by looking for
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// the option name followed by an '=' or ':', or is taken from the
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// following option IFF:
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// - The current option does not contain a '=' or a ':'
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// - The current option requires a value (i.e. not a Option type of ':')
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//
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// The `name' used in the option format string does NOT include any leading
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// option indicator, such as '-', '--', or '/'. All three of these are
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// permitted/required on any named option.
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//
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// Option bundling is permitted so long as:
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// - '-' is used to start the option group
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// - all of the bundled options are a single character
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// - at most one of the bundled options accepts a value, and the value
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// provided starts from the next character to the end of the string.
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//
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// This allows specifying '-a -b -c' as '-abc', and specifying '-D name=value'
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// as '-Dname=value'.
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//
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// Option processing is disabled by specifying "--". All options after "--"
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// are returned by OptionSet.Parse() unchanged and unprocessed.
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//
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// Unprocessed options are returned from OptionSet.Parse().
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//
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// Examples:
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// int verbose = 0;
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// OptionSet p = new OptionSet ()
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// .Add ("v", v => ++verbose)
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// .Add ("name=|value=", v => Console.WriteLine (v));
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// p.Parse (new string[]{"-v", "--v", "/v", "-name=A", "/name", "B", "extra"});
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//
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// The above would parse the argument string array, and would invoke the
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// lambda expression three times, setting `verbose' to 3 when complete.
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// It would also print out "A" and "B" to standard output.
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// The returned array would contain the string "extra".
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//
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// C# 3.0 collection initializers are supported and encouraged:
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// var p = new OptionSet () {
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// { "h|?|help", v => ShowHelp () },
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// };
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//
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// System.ComponentModel.TypeConverter is also supported, allowing the use of
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// custom data types in the callback type; TypeConverter.ConvertFromString()
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// is used to convert the value option to an instance of the specified
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// type:
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//
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// var p = new OptionSet () {
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// { "foo=", (Foo f) => Console.WriteLine (f.ToString ()) },
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// };
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//
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// Random other tidbits:
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// - Boolean options (those w/o '=' or ':' in the option format string)
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// are explicitly enabled if they are followed with '+', and explicitly
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// disabled if they are followed with '-':
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// string a = null;
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// var p = new OptionSet () {
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// { "a", s => a = s },
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// };
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// p.Parse (new string[]{"-a"}); // sets v != null
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// p.Parse (new string[]{"-a+"}); // sets v != null
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// p.Parse (new string[]{"-a-"}); // sets v == null
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//
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using System;
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using System.Collections;
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using System.Collections.Generic;
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using System.Collections.ObjectModel;
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using System.ComponentModel;
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using System.Globalization;
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using System.IO;
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using System.Runtime.Serialization;
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using System.Text;
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using System.Text.RegularExpressions;
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using System.Linq;
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using System.Reflection;
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namespace Mono.Options
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{
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static class StringCoda
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{
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public static IEnumerable<string> WrappedLines (string self, params int[] widths)
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{
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IEnumerable<int> w = widths;
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return WrappedLines (self, w);
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}
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public static IEnumerable<string> WrappedLines (string self, IEnumerable<int> widths)
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{
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if (widths == null)
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throw new ArgumentNullException ("widths");
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return CreateWrappedLinesIterator (self, widths);
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}
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private static IEnumerable<string> CreateWrappedLinesIterator (string self, IEnumerable<int> widths)
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{
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if (string.IsNullOrEmpty (self)) {
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yield return string.Empty;
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yield break;
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}
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using (IEnumerator<int> ewidths = widths.GetEnumerator ()) {
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bool? hw = null;
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int width = GetNextWidth (ewidths, int.MaxValue, ref hw);
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int start = 0, end;
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do {
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end = GetLineEnd (start, width, self);
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char c = self [end - 1];
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if (char.IsWhiteSpace (c))
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--end;
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bool needContinuation = end != self.Length && !IsEolChar (c);
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string continuation = "";
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if (needContinuation) {
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--end;
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continuation = "-";
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}
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string line = self.Substring (start, end - start) + continuation;
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yield return line;
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start = end;
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if (char.IsWhiteSpace (c))
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++start;
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width = GetNextWidth (ewidths, width, ref hw);
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} while (start < self.Length);
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}
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}
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private static int GetNextWidth (IEnumerator<int> ewidths, int curWidth, ref bool? eValid)
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{
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if (!eValid.HasValue || (eValid.HasValue && eValid.Value)) {
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curWidth = (eValid = ewidths.MoveNext ()).Value ? ewidths.Current : curWidth;
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// '.' is any character, - is for a continuation
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const string minWidth = ".-";
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if (curWidth < minWidth.Length)
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throw new ArgumentOutOfRangeException ("widths",
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string.Format ("Element must be >= {0}, was {1}.", minWidth.Length, curWidth));
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return curWidth;
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}
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// no more elements, use the last element.
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return curWidth;
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}
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private static bool IsEolChar (char c)
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{
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return !char.IsLetterOrDigit (c);
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}
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private static int GetLineEnd (int start, int length, string description)
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{
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int end = System.Math.Min (start + length, description.Length);
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int sep = -1;
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for (int i = start; i < end; ++i) {
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if (description [i] == '\n')
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return i + 1;
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if (IsEolChar (description [i]))
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sep = i + 1;
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}
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if (sep == -1 || end == description.Length)
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return end;
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return sep;
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}
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}
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public class OptionValueCollection : IList, IList<string>
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{
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List<string> values = new List<string> ();
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OptionContext c;
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internal OptionValueCollection (OptionContext c)
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{
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this.c = c;
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}
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#region ICollection
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void ICollection.CopyTo (Array array, int index)
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{
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(values as ICollection).CopyTo (array, index);
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}
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bool ICollection.IsSynchronized { get { return (values as ICollection).IsSynchronized; } }
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object ICollection.SyncRoot { get { return (values as ICollection).SyncRoot; } }
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#endregion
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#region ICollection<T>
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public void Add (string item)
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{
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values.Add (item);
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}
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public void Clear ()
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{
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values.Clear ();
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}
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public bool Contains (string item)
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{
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return values.Contains (item);
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}
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public void CopyTo (string[] array, int arrayIndex)
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{
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values.CopyTo (array, arrayIndex);
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}
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public bool Remove (string item)
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{
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return values.Remove (item);
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}
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public int Count { get { return values.Count; } }
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public bool IsReadOnly { get { return false; } }
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#endregion
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#region IEnumerable
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IEnumerator IEnumerable.GetEnumerator ()
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{
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return values.GetEnumerator ();
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}
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#endregion
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#region IEnumerable<T>
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public IEnumerator<string> GetEnumerator ()
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{
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return values.GetEnumerator ();
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}
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#endregion
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#region IList
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int IList.Add (object value)
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{
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return (values as IList).Add (value);
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}
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bool IList.Contains (object value)
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{
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return (values as IList).Contains (value);
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}
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int IList.IndexOf (object value)
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{
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return (values as IList).IndexOf (value);
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}
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void IList.Insert (int index, object value)
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{
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(values as IList).Insert (index, value);
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}
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void IList.Remove (object value)
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{
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(values as IList).Remove (value);
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}
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void IList.RemoveAt (int index)
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{
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(values as IList).RemoveAt (index);
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}
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bool IList.IsFixedSize { get { return false; } }
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object IList.this [int index] { get { return this [index]; } set { (values as IList) [index] = value; } }
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#endregion
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#region IList<T>
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public int IndexOf (string item)
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{
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return values.IndexOf (item);
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}
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public void Insert (int index, string item)
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{
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values.Insert (index, item);
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}
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public void RemoveAt (int index)
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{
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values.RemoveAt (index);
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}
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private void AssertValid (int index)
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{
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if (c.Option == null)
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throw new InvalidOperationException ("OptionContext.Option is null.");
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if (index >= c.Option.MaxValueCount)
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throw new ArgumentOutOfRangeException ("index");
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if (c.Option.OptionValueType == OptionValueType.Required &&
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index >= values.Count)
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throw new OptionException (string.Format (
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c.OptionSet.MessageLocalizer ("Missing required value for option '{0}'."), c.OptionName),
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c.OptionName);
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}
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public string this [int index] {
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get {
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AssertValid (index);
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return index >= values.Count ? null : values [index];
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}
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set {
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values [index] = value;
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}
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}
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#endregion
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public List<string> ToList ()
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{
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return new List<string> (values);
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}
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public string[] ToArray ()
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{
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return values.ToArray ();
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}
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public override string ToString ()
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{
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return string.Join (", ", values.ToArray ());
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}
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}
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public class OptionContext
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{
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private Option option;
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private string name;
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private int index;
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private OptionSet set;
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private OptionValueCollection c;
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public OptionContext (OptionSet set)
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{
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this.set = set;
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this.c = new OptionValueCollection (this);
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}
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public Option Option {
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get { return option; }
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set { option = value; }
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}
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public string OptionName {
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get { return name; }
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set { name = value; }
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}
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public int OptionIndex {
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get { return index; }
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set { index = value; }
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}
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public OptionSet OptionSet {
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get { return set; }
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}
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public OptionValueCollection OptionValues {
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get { return c; }
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}
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}
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public enum OptionValueType
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{
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None,
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Optional,
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Required,
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}
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public abstract class Option
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{
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string prototype, description;
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string[] names;
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OptionValueType type;
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int count;
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string[] separators;
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bool hidden;
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protected Option (string prototype, string description)
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: this (prototype, description, 1, false)
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{
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}
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protected Option (string prototype, string description, int maxValueCount)
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: this (prototype, description, maxValueCount, false)
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{
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}
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protected Option (string prototype, string description, int maxValueCount, bool hidden)
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{
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if (prototype == null)
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throw new ArgumentNullException ("prototype");
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if (prototype.Length == 0)
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throw new ArgumentException ("Cannot be the empty string.", "prototype");
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if (maxValueCount < 0)
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throw new ArgumentOutOfRangeException ("maxValueCount");
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this.prototype = prototype;
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this.description = description;
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this.count = maxValueCount;
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this.names = (this is OptionSet.Category)
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// append GetHashCode() so that "duplicate" categories have distinct
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// names, e.g. adding multiple "" categories should be valid.
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? new[]{ prototype + this.GetHashCode () }
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: prototype.Split ('|');
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if (this is OptionSet.Category)
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return;
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this.type = ParsePrototype ();
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this.hidden = hidden;
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if (this.count == 0 && type != OptionValueType.None)
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throw new ArgumentException (
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"Cannot provide maxValueCount of 0 for OptionValueType.Required or " +
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"OptionValueType.Optional.",
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"maxValueCount");
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if (this.type == OptionValueType.None && maxValueCount > 1)
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throw new ArgumentException (
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string.Format ("Cannot provide maxValueCount of {0} for OptionValueType.None.", maxValueCount),
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"maxValueCount");
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if (Array.IndexOf (names, "<>") >= 0 &&
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((names.Length == 1 && this.type != OptionValueType.None) ||
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(names.Length > 1 && this.MaxValueCount > 1)))
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throw new ArgumentException (
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"The default option handler '<>' cannot require values.",
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"prototype");
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}
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public string Prototype { get { return prototype; } }
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public string Description { get { return description; } }
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public OptionValueType OptionValueType { get { return type; } }
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public int MaxValueCount { get { return count; } }
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public bool Hidden { get { return hidden; } }
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public string[] GetNames ()
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{
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return (string[])names.Clone ();
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}
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public string[] GetValueSeparators ()
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{
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if (separators == null)
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return Array.Empty<string> ();
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return (string[])separators.Clone ();
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}
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protected static T Parse<T> (string value, OptionContext c)
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{
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Type tt = typeof(T);
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TypeInfo ti = tt.GetTypeInfo ();
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bool nullable = ti.IsValueType && ti.IsGenericType &&
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!ti.IsGenericTypeDefinition &&
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tt.GetGenericTypeDefinition () == typeof(Nullable<>);
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Type targetType = nullable ? tt.GetTypeInfo ().GenericTypeParameters [0] : typeof(T);
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//TypeConverter conv = TypeDescriptor.GetConverter (targetType);
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T t = default (T);
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try {
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if (value != null) {
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throw new ArgumentException ();
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//t = (T)conv.ConvertFromString (value);
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}
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} catch (Exception e) {
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throw new OptionException (
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string.Format (
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c.OptionSet.MessageLocalizer ($"Could not convert string `{value}' to type {targetType.Name} for option `{c.OptionName}'.")),
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c.OptionName, e);
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}
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return t;
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}
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internal string[] Names { get { return names; } }
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internal string[] ValueSeparators { get { return separators; } }
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static readonly char[] NameTerminator = new char[]{ '=', ':' };
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private OptionValueType ParsePrototype ()
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{
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|
char type = '\0';
|
|
List<string> seps = new List<string> ();
|
|
for (int i = 0; i < names.Length; ++i) {
|
|
string name = names [i];
|
|
if (name.Length == 0)
|
|
throw new ArgumentException ("Empty option names are not supported.", "prototype");
|
|
|
|
int end = name.IndexOfAny (NameTerminator);
|
|
if (end == -1)
|
|
continue;
|
|
names [i] = name.Substring (0, end);
|
|
if (type == '\0' || type == name [end])
|
|
type = name [end];
|
|
else
|
|
throw new ArgumentException (
|
|
string.Format ("Conflicting option types: '{0}' vs. '{1}'.", type, name [end]),
|
|
"prototype");
|
|
AddSeparators (name, end, seps);
|
|
}
|
|
|
|
if (type == '\0')
|
|
return OptionValueType.None;
|
|
|
|
if (count <= 1 && seps.Count != 0)
|
|
throw new ArgumentException (
|
|
string.Format ("Cannot provide key/value separators for Options taking {0} value(s).", count),
|
|
"prototype");
|
|
if (count > 1) {
|
|
if (seps.Count == 0)
|
|
this.separators = new string[]{ ":", "=" };
|
|
else if (seps.Count == 1 && seps [0].Length == 0)
|
|
this.separators = null;
|
|
else
|
|
this.separators = seps.ToArray ();
|
|
}
|
|
|
|
return type == '=' ? OptionValueType.Required : OptionValueType.Optional;
|
|
}
|
|
|
|
private static void AddSeparators (string name, int end, ICollection<string> seps)
|
|
{
|
|
int start = -1;
|
|
for (int i = end + 1; i < name.Length; ++i) {
|
|
switch (name [i]) {
|
|
case '{':
|
|
if (start != -1)
|
|
throw new ArgumentException (
|
|
string.Format ("Ill-formed name/value separator found in \"{0}\".", name),
|
|
"prototype");
|
|
start = i + 1;
|
|
break;
|
|
case '}':
|
|
if (start == -1)
|
|
throw new ArgumentException (
|
|
string.Format ("Ill-formed name/value separator found in \"{0}\".", name),
|
|
"prototype");
|
|
seps.Add (name.Substring (start, i - start));
|
|
start = -1;
|
|
break;
|
|
default:
|
|
if (start == -1)
|
|
seps.Add (name [i].ToString ());
|
|
break;
|
|
}
|
|
}
|
|
if (start != -1)
|
|
throw new ArgumentException (
|
|
string.Format ("Ill-formed name/value separator found in \"{0}\".", name),
|
|
"prototype");
|
|
}
|
|
|
|
public void Invoke (OptionContext c)
|
|
{
|
|
OnParseComplete (c);
|
|
c.OptionName = null;
|
|
c.Option = null;
|
|
c.OptionValues.Clear ();
|
|
}
|
|
|
|
protected abstract void OnParseComplete (OptionContext c);
|
|
|
|
public override string ToString ()
|
|
{
|
|
return Prototype;
|
|
}
|
|
}
|
|
|
|
public abstract class ArgumentSource
|
|
{
|
|
|
|
protected ArgumentSource ()
|
|
{
|
|
}
|
|
|
|
public abstract string[] GetNames ();
|
|
|
|
public abstract string Description { get; }
|
|
|
|
public abstract bool GetArguments (string value, out IEnumerable<string> replacement);
|
|
|
|
public static IEnumerable<string> GetArguments (TextReader reader)
|
|
{
|
|
return GetArguments (reader, false);
|
|
}
|
|
|
|
// Cribbed from mcs/driver.cs:LoadArgs(string)
|
|
static IEnumerable<string> GetArguments (TextReader reader, bool close)
|
|
{
|
|
try {
|
|
StringBuilder arg = new StringBuilder ();
|
|
|
|
string line;
|
|
while ((line = reader.ReadLine ()) != null) {
|
|
int t = line.Length;
|
|
|
|
for (int i = 0; i < t; i++) {
|
|
char c = line [i];
|
|
|
|
if (c == '"' || c == '\'') {
|
|
char end = c;
|
|
|
|
for (i++; i < t; i++) {
|
|
c = line [i];
|
|
|
|
if (c == end)
|
|
break;
|
|
arg.Append (c);
|
|
}
|
|
} else if (c == ' ') {
|
|
if (arg.Length > 0) {
|
|
yield return arg.ToString ();
|
|
arg.Length = 0;
|
|
}
|
|
} else
|
|
arg.Append (c);
|
|
}
|
|
if (arg.Length > 0) {
|
|
yield return arg.ToString ();
|
|
arg.Length = 0;
|
|
}
|
|
}
|
|
} finally {
|
|
if (close)
|
|
reader.Dispose ();
|
|
}
|
|
}
|
|
}
|
|
|
|
public class OptionException : Exception
|
|
{
|
|
private string option;
|
|
|
|
public OptionException ()
|
|
{
|
|
}
|
|
|
|
public OptionException (string message, string optionName)
|
|
: base (message)
|
|
{
|
|
this.option = optionName;
|
|
}
|
|
|
|
public OptionException (string message, string optionName, Exception innerException)
|
|
: base (message, innerException)
|
|
{
|
|
this.option = optionName;
|
|
}
|
|
|
|
public string OptionName {
|
|
get { return this.option; }
|
|
}
|
|
}
|
|
|
|
public delegate void OptionAction<TKey, TValue> (TKey key, TValue value);
|
|
|
|
public class OptionSet : KeyedCollection<string, Option>
|
|
{
|
|
public OptionSet ()
|
|
: this ((string f) => f)
|
|
{
|
|
}
|
|
|
|
public OptionSet (Func<string, string> localizer)
|
|
{
|
|
this.localizer = localizer;
|
|
this.roSources = new ReadOnlyCollection<ArgumentSource> (sources);
|
|
}
|
|
|
|
Func<string, string> localizer;
|
|
|
|
public Func<string, string> MessageLocalizer {
|
|
get { return localizer; }
|
|
}
|
|
|
|
List<ArgumentSource> sources = new List<ArgumentSource> ();
|
|
ReadOnlyCollection<ArgumentSource> roSources;
|
|
|
|
public ReadOnlyCollection<ArgumentSource> ArgumentSources {
|
|
get { return roSources; }
|
|
}
|
|
|
|
|
|
protected override string GetKeyForItem (Option item)
|
|
{
|
|
if (item == null)
|
|
throw new ArgumentNullException ("option");
|
|
if (item.Names != null && item.Names.Length > 0)
|
|
return item.Names [0];
|
|
// This should never happen, as it's invalid for Option to be
|
|
// constructed w/o any names.
|
|
throw new InvalidOperationException ("Option has no names!");
|
|
}
|
|
|
|
[Obsolete ("Use KeyedCollection.this[string]")]
|
|
protected Option GetOptionForName (string option)
|
|
{
|
|
if (option == null)
|
|
throw new ArgumentNullException ("option");
|
|
try {
|
|
return base [option];
|
|
} catch (KeyNotFoundException) {
|
|
return null;
|
|
}
|
|
}
|
|
|
|
protected override void InsertItem (int index, Option item)
|
|
{
|
|
base.InsertItem (index, item);
|
|
AddImpl (item);
|
|
}
|
|
|
|
protected override void RemoveItem (int index)
|
|
{
|
|
Option p = Items [index];
|
|
base.RemoveItem (index);
|
|
// KeyedCollection.RemoveItem() handles the 0th item
|
|
for (int i = 1; i < p.Names.Length; ++i) {
|
|
Dictionary.Remove (p.Names [i]);
|
|
}
|
|
}
|
|
|
|
protected override void SetItem (int index, Option item)
|
|
{
|
|
base.SetItem (index, item);
|
|
AddImpl (item);
|
|
}
|
|
|
|
private void AddImpl (Option option)
|
|
{
|
|
if (option == null)
|
|
throw new ArgumentNullException ("option");
|
|
List<string> added = new List<string> (option.Names.Length);
|
|
try {
|
|
// KeyedCollection.InsertItem/SetItem handle the 0th name.
|
|
for (int i = 1; i < option.Names.Length; ++i) {
|
|
Dictionary.Add (option.Names [i], option);
|
|
added.Add (option.Names [i]);
|
|
}
|
|
} catch (Exception) {
|
|
foreach (string name in added)
|
|
Dictionary.Remove (name);
|
|
throw;
|
|
}
|
|
}
|
|
|
|
public OptionSet Add (string header)
|
|
{
|
|
if (header == null)
|
|
throw new ArgumentNullException ("header");
|
|
Add (new Category (header));
|
|
return this;
|
|
}
|
|
|
|
internal sealed class Category : Option
|
|
{
|
|
|
|
// Prototype starts with '=' because this is an invalid prototype
|
|
// (see Option.ParsePrototype(), and thus it'll prevent Category
|
|
// instances from being accidentally used as normal options.
|
|
public Category (string description)
|
|
: base ("=:Category:= " + description, description)
|
|
{
|
|
}
|
|
|
|
protected override void OnParseComplete (OptionContext c)
|
|
{
|
|
throw new NotSupportedException ("Category.OnParseComplete should not be invoked.");
|
|
}
|
|
}
|
|
|
|
|
|
public new OptionSet Add (Option option)
|
|
{
|
|
base.Add (option);
|
|
return this;
|
|
}
|
|
|
|
sealed class ActionOption : Option
|
|
{
|
|
Action<OptionValueCollection> action;
|
|
|
|
public ActionOption (string prototype, string description, int count, Action<OptionValueCollection> action)
|
|
: this (prototype, description, count, action, false)
|
|
{
|
|
}
|
|
|
|
public ActionOption (string prototype, string description, int count, Action<OptionValueCollection> action, bool hidden)
|
|
: base (prototype, description, count, hidden)
|
|
{
|
|
if (action == null)
|
|
throw new ArgumentNullException ("action");
|
|
this.action = action;
|
|
}
|
|
|
|
protected override void OnParseComplete (OptionContext c)
|
|
{
|
|
action (c.OptionValues);
|
|
}
|
|
}
|
|
|
|
public OptionSet Add (string prototype, Action<string> action)
|
|
{
|
|
return Add (prototype, null, action);
|
|
}
|
|
|
|
public OptionSet Add (string prototype, string description, Action<string> action)
|
|
{
|
|
return Add (prototype, description, action, false);
|
|
}
|
|
|
|
public OptionSet Add (string prototype, string description, Action<string> action, bool hidden)
|
|
{
|
|
if (action == null)
|
|
throw new ArgumentNullException ("action");
|
|
Option p = new ActionOption (prototype, description, 1,
|
|
delegate (OptionValueCollection v) {
|
|
action (v [0]);
|
|
}, hidden);
|
|
base.Add (p);
|
|
return this;
|
|
}
|
|
|
|
public OptionSet Add (string prototype, OptionAction<string, string> action)
|
|
{
|
|
return Add (prototype, null, action);
|
|
}
|
|
|
|
public OptionSet Add (string prototype, string description, OptionAction<string, string> action)
|
|
{
|
|
return Add (prototype, description, action, false);
|
|
}
|
|
|
|
public OptionSet Add (string prototype, string description, OptionAction<string, string> action, bool hidden)
|
|
{
|
|
if (action == null)
|
|
throw new ArgumentNullException ("action");
|
|
Option p = new ActionOption (prototype, description, 2,
|
|
delegate (OptionValueCollection v) {
|
|
action (v [0], v [1]);
|
|
}, hidden);
|
|
base.Add (p);
|
|
return this;
|
|
}
|
|
|
|
sealed class ActionOption<T> : Option
|
|
{
|
|
Action<T> action;
|
|
|
|
public ActionOption (string prototype, string description, Action<T> action)
|
|
: base (prototype, description, 1)
|
|
{
|
|
if (action == null)
|
|
throw new ArgumentNullException ("action");
|
|
this.action = action;
|
|
}
|
|
|
|
protected override void OnParseComplete (OptionContext c)
|
|
{
|
|
action (Parse<T> (c.OptionValues [0], c));
|
|
}
|
|
}
|
|
|
|
sealed class ActionOption<TKey, TValue> : Option
|
|
{
|
|
OptionAction<TKey, TValue> action;
|
|
|
|
public ActionOption (string prototype, string description, OptionAction<TKey, TValue> action)
|
|
: base (prototype, description, 2)
|
|
{
|
|
if (action == null)
|
|
throw new ArgumentNullException ("action");
|
|
this.action = action;
|
|
}
|
|
|
|
protected override void OnParseComplete (OptionContext c)
|
|
{
|
|
action (
|
|
Parse<TKey> (c.OptionValues [0], c),
|
|
Parse<TValue> (c.OptionValues [1], c));
|
|
}
|
|
}
|
|
|
|
public OptionSet Add<T> (string prototype, Action<T> action)
|
|
{
|
|
return Add (prototype, null, action);
|
|
}
|
|
|
|
public OptionSet Add<T> (string prototype, string description, Action<T> action)
|
|
{
|
|
return Add (new ActionOption<T> (prototype, description, action));
|
|
}
|
|
|
|
public OptionSet Add<TKey, TValue> (string prototype, OptionAction<TKey, TValue> action)
|
|
{
|
|
return Add (prototype, null, action);
|
|
}
|
|
|
|
public OptionSet Add<TKey, TValue> (string prototype, string description, OptionAction<TKey, TValue> action)
|
|
{
|
|
return Add (new ActionOption<TKey, TValue> (prototype, description, action));
|
|
}
|
|
|
|
public OptionSet Add (ArgumentSource source)
|
|
{
|
|
if (source == null)
|
|
throw new ArgumentNullException ("source");
|
|
sources.Add (source);
|
|
return this;
|
|
}
|
|
|
|
protected virtual OptionContext CreateOptionContext ()
|
|
{
|
|
return new OptionContext (this);
|
|
}
|
|
|
|
public List<string> Parse (IEnumerable<string> arguments)
|
|
{
|
|
if (arguments == null)
|
|
throw new ArgumentNullException ("arguments");
|
|
OptionContext c = CreateOptionContext ();
|
|
c.OptionIndex = -1;
|
|
bool process = true;
|
|
List<string> unprocessed = new List<string> ();
|
|
Option def = Contains ("<>") ? this ["<>"] : null;
|
|
ArgumentEnumerator ae = new ArgumentEnumerator (arguments);
|
|
foreach (string argument in ae) {
|
|
++c.OptionIndex;
|
|
if (argument == "--") {
|
|
process = false;
|
|
continue;
|
|
}
|
|
if (!process) {
|
|
Unprocessed (unprocessed, def, c, argument);
|
|
continue;
|
|
}
|
|
if (AddSource (ae, argument))
|
|
continue;
|
|
if (!Parse (argument, c))
|
|
Unprocessed (unprocessed, def, c, argument);
|
|
}
|
|
if (c.Option != null)
|
|
c.Option.Invoke (c);
|
|
return unprocessed;
|
|
}
|
|
|
|
class ArgumentEnumerator : IEnumerable<string>
|
|
{
|
|
List<IEnumerator<string>> sources = new List<IEnumerator<string>> ();
|
|
|
|
public ArgumentEnumerator (IEnumerable<string> arguments)
|
|
{
|
|
sources.Add (arguments.GetEnumerator ());
|
|
}
|
|
|
|
public void Add (IEnumerable<string> arguments)
|
|
{
|
|
sources.Add (arguments.GetEnumerator ());
|
|
}
|
|
|
|
public IEnumerator<string> GetEnumerator ()
|
|
{
|
|
do {
|
|
IEnumerator<string> c = sources [sources.Count - 1];
|
|
if (c.MoveNext ())
|
|
yield return c.Current;
|
|
else {
|
|
c.Dispose ();
|
|
sources.RemoveAt (sources.Count - 1);
|
|
}
|
|
} while (sources.Count > 0);
|
|
}
|
|
|
|
IEnumerator IEnumerable.GetEnumerator ()
|
|
{
|
|
return GetEnumerator ();
|
|
}
|
|
}
|
|
|
|
bool AddSource (ArgumentEnumerator ae, string argument)
|
|
{
|
|
foreach (ArgumentSource source in sources) {
|
|
IEnumerable<string> replacement;
|
|
if (!source.GetArguments (argument, out replacement))
|
|
continue;
|
|
ae.Add (replacement);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private static bool Unprocessed (ICollection<string> extra, Option def, OptionContext c, string argument)
|
|
{
|
|
if (def == null) {
|
|
extra.Add (argument);
|
|
return false;
|
|
}
|
|
c.OptionValues.Add (argument);
|
|
c.Option = def;
|
|
c.Option.Invoke (c);
|
|
return false;
|
|
}
|
|
|
|
private readonly Regex ValueOption = new Regex (
|
|
@"^(?<flag>--|-|/)(?<name>[^:=]+)((?<sep>[:=])(?<value>.*))?$");
|
|
|
|
protected bool GetOptionParts (string argument, out string flag, out string name, out string sep, out string value)
|
|
{
|
|
if (argument == null)
|
|
throw new ArgumentNullException ("argument");
|
|
|
|
flag = name = sep = value = null;
|
|
Match m = ValueOption.Match (argument);
|
|
if (!m.Success) {
|
|
return false;
|
|
}
|
|
flag = m.Groups ["flag"].Value;
|
|
name = m.Groups ["name"].Value;
|
|
if (m.Groups ["sep"].Success && m.Groups ["value"].Success) {
|
|
sep = m.Groups ["sep"].Value;
|
|
value = m.Groups ["value"].Value;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
protected virtual bool Parse (string argument, OptionContext c)
|
|
{
|
|
if (c.Option != null) {
|
|
ParseValue (argument, c);
|
|
return true;
|
|
}
|
|
|
|
string f, n, s, v;
|
|
if (!GetOptionParts (argument, out f, out n, out s, out v))
|
|
return false;
|
|
|
|
Option p;
|
|
if (Contains (n)) {
|
|
p = this [n];
|
|
c.OptionName = f + n;
|
|
c.Option = p;
|
|
switch (p.OptionValueType) {
|
|
case OptionValueType.None:
|
|
c.OptionValues.Add (n);
|
|
c.Option.Invoke (c);
|
|
break;
|
|
case OptionValueType.Optional:
|
|
case OptionValueType.Required:
|
|
ParseValue (v, c);
|
|
break;
|
|
}
|
|
return true;
|
|
}
|
|
// no match; is it a bool option?
|
|
if (ParseBool (argument, n, c))
|
|
return true;
|
|
// is it a bundled option?
|
|
if (ParseBundledValue (f, string.Concat (n + s + v), c))
|
|
return true;
|
|
|
|
return false;
|
|
}
|
|
|
|
private void ParseValue (string option, OptionContext c)
|
|
{
|
|
if (option != null)
|
|
foreach (string o in c.Option.ValueSeparators != null
|
|
? option.Split (c.Option.ValueSeparators, c.Option.MaxValueCount - c.OptionValues.Count, StringSplitOptions.None)
|
|
: new string[]{option}) {
|
|
c.OptionValues.Add (o);
|
|
}
|
|
if (c.OptionValues.Count == c.Option.MaxValueCount ||
|
|
c.Option.OptionValueType == OptionValueType.Optional)
|
|
c.Option.Invoke (c);
|
|
else if (c.OptionValues.Count > c.Option.MaxValueCount) {
|
|
throw new OptionException (localizer (string.Format (
|
|
"Error: Found {0} option values when expecting {1}.",
|
|
c.OptionValues.Count, c.Option.MaxValueCount)),
|
|
c.OptionName);
|
|
}
|
|
}
|
|
|
|
private bool ParseBool (string option, string n, OptionContext c)
|
|
{
|
|
Option p;
|
|
string rn;
|
|
if (n.Length >= 1 && (n [n.Length - 1] == '+' || n [n.Length - 1] == '-') &&
|
|
Contains ((rn = n.Substring (0, n.Length - 1)))) {
|
|
p = this [rn];
|
|
string v = n [n.Length - 1] == '+' ? option : null;
|
|
c.OptionName = option;
|
|
c.Option = p;
|
|
c.OptionValues.Add (v);
|
|
p.Invoke (c);
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
private bool ParseBundledValue (string f, string n, OptionContext c)
|
|
{
|
|
if (f != "-")
|
|
return false;
|
|
for (int i = 0; i < n.Length; ++i) {
|
|
Option p;
|
|
string opt = f + n [i].ToString ();
|
|
string rn = n [i].ToString ();
|
|
if (!Contains (rn)) {
|
|
if (i == 0)
|
|
return false;
|
|
throw new OptionException (string.Format (localizer (
|
|
"Cannot bundle unregistered option '{0}'."), opt), opt);
|
|
}
|
|
p = this [rn];
|
|
switch (p.OptionValueType) {
|
|
case OptionValueType.None:
|
|
Invoke (c, opt, n, p);
|
|
break;
|
|
case OptionValueType.Optional:
|
|
case OptionValueType.Required:
|
|
{
|
|
string v = n.Substring (i + 1);
|
|
c.Option = p;
|
|
c.OptionName = opt;
|
|
ParseValue (v.Length != 0 ? v : null, c);
|
|
return true;
|
|
}
|
|
default:
|
|
throw new InvalidOperationException ("Unknown OptionValueType: " + p.OptionValueType);
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
private static void Invoke (OptionContext c, string name, string value, Option option)
|
|
{
|
|
c.OptionName = name;
|
|
c.Option = option;
|
|
c.OptionValues.Add (value);
|
|
option.Invoke (c);
|
|
}
|
|
|
|
private const int OptionWidth = 29;
|
|
private const int Description_FirstWidth = 80 - OptionWidth;
|
|
private const int Description_RemWidth = 80 - OptionWidth - 2;
|
|
|
|
public void WriteOptionDescriptions (TextWriter o)
|
|
{
|
|
foreach (Option p in this) {
|
|
int written = 0;
|
|
|
|
if (p.Hidden)
|
|
continue;
|
|
|
|
Category c = p as Category;
|
|
if (c != null) {
|
|
WriteDescription (o, p.Description, "", 80, 80);
|
|
continue;
|
|
}
|
|
|
|
if (!WriteOptionPrototype (o, p, ref written))
|
|
continue;
|
|
|
|
if (written < OptionWidth)
|
|
o.Write (new string (' ', OptionWidth - written));
|
|
else {
|
|
o.WriteLine ();
|
|
o.Write (new string (' ', OptionWidth));
|
|
}
|
|
|
|
WriteDescription (o, p.Description, new string (' ', OptionWidth + 2),
|
|
Description_FirstWidth, Description_RemWidth);
|
|
}
|
|
|
|
foreach (ArgumentSource s in sources) {
|
|
string[] names = s.GetNames ();
|
|
if (names == null || names.Length == 0)
|
|
continue;
|
|
|
|
int written = 0;
|
|
|
|
Write (o, ref written, " ");
|
|
Write (o, ref written, names [0]);
|
|
for (int i = 1; i < names.Length; ++i) {
|
|
Write (o, ref written, ", ");
|
|
Write (o, ref written, names [i]);
|
|
}
|
|
|
|
if (written < OptionWidth)
|
|
o.Write (new string (' ', OptionWidth - written));
|
|
else {
|
|
o.WriteLine ();
|
|
o.Write (new string (' ', OptionWidth));
|
|
}
|
|
|
|
WriteDescription (o, s.Description, new string (' ', OptionWidth + 2),
|
|
Description_FirstWidth, Description_RemWidth);
|
|
}
|
|
}
|
|
|
|
void WriteDescription (TextWriter o, string value, string prefix, int firstWidth, int remWidth)
|
|
{
|
|
bool indent = false;
|
|
foreach (string line in GetLines (localizer (GetDescription (value)), firstWidth, remWidth)) {
|
|
if (indent)
|
|
o.Write (prefix);
|
|
o.WriteLine (line);
|
|
indent = true;
|
|
}
|
|
}
|
|
|
|
bool WriteOptionPrototype (TextWriter o, Option p, ref int written)
|
|
{
|
|
string[] names = p.Names;
|
|
|
|
int i = GetNextOptionIndex (names, 0);
|
|
if (i == names.Length)
|
|
return false;
|
|
|
|
if (names [i].Length == 1) {
|
|
Write (o, ref written, " -");
|
|
Write (o, ref written, names [0]);
|
|
} else {
|
|
Write (o, ref written, " --");
|
|
Write (o, ref written, names [0]);
|
|
}
|
|
|
|
for (i = GetNextOptionIndex (names, i + 1);
|
|
i < names.Length; i = GetNextOptionIndex (names, i + 1)) {
|
|
Write (o, ref written, ", ");
|
|
Write (o, ref written, names [i].Length == 1 ? "-" : "--");
|
|
Write (o, ref written, names [i]);
|
|
}
|
|
|
|
if (p.OptionValueType == OptionValueType.Optional ||
|
|
p.OptionValueType == OptionValueType.Required) {
|
|
if (p.OptionValueType == OptionValueType.Optional) {
|
|
Write (o, ref written, localizer ("["));
|
|
}
|
|
Write (o, ref written, localizer ("=" + GetArgumentName (0, p.MaxValueCount, p.Description)));
|
|
string sep = p.ValueSeparators != null && p.ValueSeparators.Length > 0
|
|
? p.ValueSeparators [0]
|
|
: " ";
|
|
for (int c = 1; c < p.MaxValueCount; ++c) {
|
|
Write (o, ref written, localizer (sep + GetArgumentName (c, p.MaxValueCount, p.Description)));
|
|
}
|
|
if (p.OptionValueType == OptionValueType.Optional) {
|
|
Write (o, ref written, localizer ("]"));
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static int GetNextOptionIndex (string[] names, int i)
|
|
{
|
|
while (i < names.Length && names [i] == "<>") {
|
|
++i;
|
|
}
|
|
return i;
|
|
}
|
|
|
|
static void Write (TextWriter o, ref int n, string s)
|
|
{
|
|
n += s.Length;
|
|
o.Write (s);
|
|
}
|
|
|
|
private static string GetArgumentName (int index, int maxIndex, string description)
|
|
{
|
|
if (description == null)
|
|
return maxIndex == 1 ? "VALUE" : "VALUE" + (index + 1);
|
|
string[] nameStart;
|
|
if (maxIndex == 1)
|
|
nameStart = new string[]{ "{0:", "{" };
|
|
else
|
|
nameStart = new string[]{ "{" + index + ":" };
|
|
for (int i = 0; i < nameStart.Length; ++i) {
|
|
int start, j = 0;
|
|
do {
|
|
start = description.IndexOf (nameStart [i], j, StringComparison.Ordinal);
|
|
} while (start >= 0 && j != 0 ? description [j++ - 1] == '{' : false);
|
|
if (start == -1)
|
|
continue;
|
|
int end = description.IndexOf ("}", start, StringComparison.Ordinal);
|
|
if (end == -1)
|
|
continue;
|
|
return description.Substring (start + nameStart [i].Length, end - start - nameStart [i].Length);
|
|
}
|
|
return maxIndex == 1 ? "VALUE" : "VALUE" + (index + 1);
|
|
}
|
|
|
|
private static string GetDescription (string description)
|
|
{
|
|
if (description == null)
|
|
return string.Empty;
|
|
StringBuilder sb = new StringBuilder (description.Length);
|
|
int start = -1;
|
|
for (int i = 0; i < description.Length; ++i) {
|
|
switch (description [i]) {
|
|
case '{':
|
|
if (i == start) {
|
|
sb.Append ('{');
|
|
start = -1;
|
|
} else if (start < 0)
|
|
start = i + 1;
|
|
break;
|
|
case '}':
|
|
if (start < 0) {
|
|
if ((i + 1) == description.Length || description [i + 1] != '}')
|
|
throw new InvalidOperationException ("Invalid option description: " + description);
|
|
++i;
|
|
sb.Append ("}");
|
|
} else {
|
|
sb.Append (description.Substring (start, i - start));
|
|
start = -1;
|
|
}
|
|
break;
|
|
case ':':
|
|
if (start < 0)
|
|
goto default;
|
|
start = i + 1;
|
|
break;
|
|
default:
|
|
if (start < 0)
|
|
sb.Append (description [i]);
|
|
break;
|
|
}
|
|
}
|
|
return sb.ToString ();
|
|
}
|
|
|
|
private static IEnumerable<string> GetLines (string description, int firstWidth, int remWidth)
|
|
{
|
|
return StringCoda.WrappedLines (description, firstWidth, remWidth);
|
|
}
|
|
}
|
|
}
|
|
|