1101 lines
31 KiB
C#
1101 lines
31 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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//
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// Copyright (C) 2008 Novell (http://www.novell.com)
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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.Security.Permissions;
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using System.Text;
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using System.Text.RegularExpressions;
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#if LINQ
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using System.Linq;
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#endif
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#if TEST
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using NDesk.Options;
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#endif
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#if NDESK_OPTIONS
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namespace NDesk.Options
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#else
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namespace Mono.Options
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#endif
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{
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public class OptionValueCollection : IList, IList<string> {
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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) {(values as ICollection).CopyTo (array, index);}
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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) {values.Add (item);}
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public void Clear () {values.Clear ();}
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public bool Contains (string item) {return values.Contains (item);}
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public void CopyTo (string[] array, int arrayIndex) {values.CopyTo (array, arrayIndex);}
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public bool Remove (string item) {return values.Remove (item);}
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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 () {return values.GetEnumerator ();}
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#endregion
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#region IEnumerable<T>
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public IEnumerator<string> GetEnumerator () {return values.GetEnumerator ();}
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#endregion
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#region IList
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int IList.Add (object value) {return (values as IList).Add (value);}
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bool IList.Contains (object value) {return (values as IList).Contains (value);}
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int IList.IndexOf (object value) {return (values as IList).IndexOf (value);}
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void IList.Insert (int index, object value) {(values as IList).Insert (index, value);}
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void IList.Remove (object value) {(values as IList).Remove (value);}
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void IList.RemoveAt (int index) {(values as IList).RemoveAt (index);}
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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) {return values.IndexOf (item);}
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public void Insert (int index, string item) {values.Insert (index, item);}
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public void RemoveAt (int index) {values.RemoveAt (index);}
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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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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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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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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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protected Option (string prototype, string description)
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: this (prototype, description, 1)
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{
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}
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protected Option (string prototype, string description, int maxValueCount)
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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.names = prototype.Split ('|');
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this.description = description;
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this.count = maxValueCount;
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this.type = ParsePrototype ();
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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 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 new string [0];
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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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bool nullable = tt.IsValueType && tt.IsGenericType &&
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!tt.IsGenericTypeDefinition &&
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tt.GetGenericTypeDefinition () == typeof (Nullable<>);
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Type targetType = nullable ? tt.GetGenericArguments () [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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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 `{0}' to type {1} for option `{2}'."),
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value, targetType.Name, 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';
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List<string> seps = new List<string> ();
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for (int i = 0; i < names.Length; ++i) {
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string name = names [i];
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if (name.Length == 0)
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throw new ArgumentException ("Empty option names are not supported.", "prototype");
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int end = name.IndexOfAny (NameTerminator);
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if (end == -1)
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continue;
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names [i] = name.Substring (0, end);
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if (type == '\0' || type == name [end])
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type = name [end];
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else
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throw new ArgumentException (
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string.Format ("Conflicting option types: '{0}' vs. '{1}'.", type, name [end]),
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"prototype");
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AddSeparators (name, end, seps);
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}
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if (type == '\0')
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return OptionValueType.None;
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if (count <= 1 && seps.Count != 0)
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throw new ArgumentException (
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string.Format ("Cannot provide key/value separators for Options taking {0} value(s).", count),
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"prototype");
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if (count > 1) {
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if (seps.Count == 0)
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this.separators = new string[]{":", "="};
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else if (seps.Count == 1 && seps [0].Length == 0)
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this.separators = null;
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else
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this.separators = seps.ToArray ();
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}
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return type == '=' ? OptionValueType.Required : OptionValueType.Optional;
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}
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private static void AddSeparators (string name, int end, ICollection<string> seps)
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{
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int start = -1;
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for (int i = end+1; i < name.Length; ++i) {
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switch (name [i]) {
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case '{':
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if (start != -1)
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throw new ArgumentException (
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string.Format ("Ill-formed name/value separator found in \"{0}\".", name),
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"prototype");
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start = i+1;
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break;
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case '}':
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if (start == -1)
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throw new ArgumentException (
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string.Format ("Ill-formed name/value separator found in \"{0}\".", name),
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"prototype");
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seps.Add (name.Substring (start, i-start));
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start = -1;
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break;
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default:
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if (start == -1)
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seps.Add (name [i].ToString ());
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break;
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}
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}
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if (start != -1)
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throw new ArgumentException (
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string.Format ("Ill-formed name/value separator found in \"{0}\".", name),
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"prototype");
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}
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public void Invoke (OptionContext c)
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{
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OnParseComplete (c);
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c.OptionName = null;
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c.Option = null;
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c.OptionValues.Clear ();
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}
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protected abstract void OnParseComplete (OptionContext c);
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public override string ToString ()
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{
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return Prototype;
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}
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}
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[Serializable]
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public class OptionException : Exception {
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private string option;
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public OptionException ()
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{
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}
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public OptionException (string message, string optionName)
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: base (message)
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{
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this.option = optionName;
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}
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public OptionException (string message, string optionName, Exception innerException)
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: base (message, innerException)
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{
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this.option = optionName;
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}
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protected OptionException (SerializationInfo info, StreamingContext context)
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: base (info, context)
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{
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this.option = info.GetString ("OptionName");
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}
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public string OptionName {
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get {return this.option;}
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}
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[SecurityPermission (SecurityAction.LinkDemand, SerializationFormatter = true)]
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public override void GetObjectData (SerializationInfo info, StreamingContext context)
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{
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base.GetObjectData (info, context);
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info.AddValue ("OptionName", option);
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}
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}
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public delegate void OptionAction<TKey, TValue> (TKey key, TValue value);
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public class OptionSet : KeyedCollection<string, Option>
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{
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public OptionSet ()
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: this (delegate (string f) {return f;})
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{
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}
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public OptionSet (Converter<string, string> localizer)
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{
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this.localizer = localizer;
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}
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Converter<string, string> localizer;
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public Converter<string, string> MessageLocalizer {
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get {return localizer;}
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}
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protected override string GetKeyForItem (Option item)
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{
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if (item == null)
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throw new ArgumentNullException ("option");
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if (item.Names != null && item.Names.Length > 0)
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return item.Names [0];
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// This should never happen, as it's invalid for Option to be
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// constructed w/o any names.
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throw new InvalidOperationException ("Option has no names!");
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}
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[Obsolete ("Use KeyedCollection.this[string]")]
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protected Option GetOptionForName (string option)
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{
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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)
|
|
{
|
|
base.RemoveItem (index);
|
|
Option p = Items [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);
|
|
RemoveItem (index);
|
|
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 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)
|
|
: base (prototype, description, count)
|
|
{
|
|
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)
|
|
{
|
|
if (action == null)
|
|
throw new ArgumentNullException ("action");
|
|
Option p = new ActionOption (prototype, description, 1,
|
|
delegate (OptionValueCollection v) { action (v [0]); });
|
|
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)
|
|
{
|
|
if (action == null)
|
|
throw new ArgumentNullException ("action");
|
|
Option p = new ActionOption (prototype, description, 2,
|
|
delegate (OptionValueCollection v) {action (v [0], v [1]);});
|
|
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));
|
|
}
|
|
|
|
protected virtual OptionContext CreateOptionContext ()
|
|
{
|
|
return new OptionContext (this);
|
|
}
|
|
|
|
#if LINQ
|
|
public List<string> Parse (IEnumerable<string> arguments)
|
|
{
|
|
bool process = true;
|
|
OptionContext c = CreateOptionContext ();
|
|
c.OptionIndex = -1;
|
|
var def = GetOptionForName ("<>");
|
|
var unprocessed =
|
|
from argument in arguments
|
|
where ++c.OptionIndex >= 0 && (process || def != null)
|
|
? process
|
|
? argument == "--"
|
|
? (process = false)
|
|
: !Parse (argument, c)
|
|
? def != null
|
|
? Unprocessed (null, def, c, argument)
|
|
: true
|
|
: false
|
|
: def != null
|
|
? Unprocessed (null, def, c, argument)
|
|
: true
|
|
: true
|
|
select argument;
|
|
List<string> r = unprocessed.ToList ();
|
|
if (c.Option != null)
|
|
c.Option.Invoke (c);
|
|
return r;
|
|
}
|
|
#else
|
|
public List<string> Parse (IEnumerable<string> arguments)
|
|
{
|
|
OptionContext c = CreateOptionContext ();
|
|
c.OptionIndex = -1;
|
|
bool process = true;
|
|
List<string> unprocessed = new List<string> ();
|
|
Option def = Contains ("<>") ? this ["<>"] : null;
|
|
foreach (string argument in arguments) {
|
|
++c.OptionIndex;
|
|
if (argument == "--") {
|
|
process = false;
|
|
continue;
|
|
}
|
|
if (!process) {
|
|
Unprocessed (unprocessed, def, c, argument);
|
|
continue;
|
|
}
|
|
if (!Parse (argument, c))
|
|
Unprocessed (unprocessed, def, c, argument);
|
|
}
|
|
if (c.Option != null)
|
|
c.Option.Invoke (c);
|
|
return unprocessed;
|
|
}
|
|
#endif
|
|
|
|
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, 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;
|
|
|
|
public void WriteOptionDescriptions (TextWriter o)
|
|
{
|
|
foreach (Option p in this) {
|
|
int written = 0;
|
|
if (!WriteOptionPrototype (o, p, ref written))
|
|
continue;
|
|
|
|
if (written < OptionWidth)
|
|
o.Write (new string (' ', OptionWidth - written));
|
|
else {
|
|
o.WriteLine ();
|
|
o.Write (new string (' ', OptionWidth));
|
|
}
|
|
|
|
bool indent = false;
|
|
string prefix = new string (' ', OptionWidth+2);
|
|
foreach (string line in GetLines (localizer (GetDescription (p.Description)))) {
|
|
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);
|
|
} while (start >= 0 && j != 0 ? description [j++ - 1] == '{' : false);
|
|
if (start == -1)
|
|
continue;
|
|
int end = description.IndexOf ("}", start);
|
|
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)
|
|
{
|
|
if (string.IsNullOrEmpty (description)) {
|
|
yield return string.Empty;
|
|
yield break;
|
|
}
|
|
int length = 80 - OptionWidth - 1;
|
|
int start = 0, end;
|
|
do {
|
|
end = GetLineEnd (start, length, description);
|
|
char c = description [end-1];
|
|
if (char.IsWhiteSpace (c))
|
|
--end;
|
|
bool writeContinuation = end != description.Length && !IsEolChar (c);
|
|
string line = description.Substring (start, end - start) +
|
|
(writeContinuation ? "-" : "");
|
|
yield return line;
|
|
start = end;
|
|
if (char.IsWhiteSpace (c))
|
|
++start;
|
|
length = 80 - OptionWidth - 2 - 1;
|
|
} while (end < description.Length);
|
|
}
|
|
|
|
private static bool IsEolChar (char c)
|
|
{
|
|
return !char.IsLetterOrDigit (c);
|
|
}
|
|
|
|
private static int GetLineEnd (int start, int length, string description)
|
|
{
|
|
int end = System.Math.Min (start + length, description.Length);
|
|
int sep = -1;
|
|
for (int i = start; i < end; ++i) {
|
|
if (description [i] == '\n')
|
|
return i+1;
|
|
if (IsEolChar (description [i]))
|
|
sep = i+1;
|
|
}
|
|
if (sep == -1 || end == description.Length)
|
|
return end;
|
|
return sep;
|
|
}
|
|
}
|
|
}
|
|
|