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fnecore/Utility/CommandOptions.cs

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64 KiB

/**
* Digital Voice Modem - Fixed Network Equipment
* AGPLv3 Open Source. Use is subject to license terms.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* @package DVM / Fixed Network Equipment
*
*/
/*
* Copyright (C) 2022 by Bryan Biedenkapp N2PLL
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*/
//
// Implements a class to help manage command line options and flags.
// Created Aug 30, 2012
//
//
// Options.cs
//
// Authors:
// Jonathan Pryor <jpryor@novell.com>
// Federico Di Gregorio <fog@initd.org>
//
// Copyright (C) 2008 Novell (http://www.novell.com)
// Copyright (C) 2009 Federico Di Gregorio.
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Compile With:
// gmcs -debug+ -r:System.Core Options.cs -o:NDesk.Options.dll
// gmcs -debug+ -d:LINQ -r:System.Core Options.cs -o:NDesk.Options.dll
//
// The LINQ version just changes the implementation of
// OptionSet.Parse(IEnumerable<string>), and confers no semantic changes.
//
// A Getopt::Long-inspired option parsing library for C#.
//
// NDesk.Options.OptionSet is built upon a key/value table, where the
// key is a option format string and the value is a delegate that is
// invoked when the format string is matched.
//
// Option format strings:
// Regex-like BNF Grammar:
// name: .+
// type: [=:]
// sep: ( [^{}]+ | '{' .+ '}' )?
// aliases: ( name type sep ) ( '|' name type sep )*
//
// Each '|'-delimited name is an alias for the associated action. If the
// format string ends in a '=', it has a required value. If the format
// string ends in a ':', it has an optional value. If neither '=' or ':'
// is present, no value is supported. `=' or `:' need only be defined on one
// alias, but if they are provided on more than one they must be consistent.
//
// Each alias portion may also end with a "key/value separator", which is used
// to split option values if the option accepts > 1 value. If not specified,
// it defaults to '=' and ':'. If specified, it can be any character except
// '{' and '}' OR the *string* between '{' and '}'. If no separator should be
// used (i.e. the separate values should be distinct arguments), then "{}"
// should be used as the separator.
//
// Options are extracted either from the current option by looking for
// the option name followed by an '=' or ':', or is taken from the
// following option IFF:
// - The current option does not contain a '=' or a ':'
// - The current option requires a value (i.e. not a Option type of ':')
//
// The `name' used in the option format string does NOT include any leading
// option indicator, such as '-', '--', or '/'. All three of these are
// permitted/required on any named option.
//
// Option bundling is permitted so long as:
// - '-' is used to start the option group
// - all of the bundled options are a single character
// - at most one of the bundled options accepts a value, and the value
// provided starts from the next character to the end of the string.
//
// This allows specifying '-a -b -c' as '-abc', and specifying '-D name=value'
// as '-Dname=value'.
//
// Option processing is disabled by specifying "--". All options after "--"
// are returned by OptionSet.Parse() unchanged and unprocessed.
//
// Unprocessed options are returned from OptionSet.Parse().
//
// Examples:
// int verbose = 0;
// OptionSet p = new OptionSet ()
// .Add ("v", v => ++verbose)
// .Add ("name=|value=", v => Console.WriteLine (v));
// p.Parse (new string[]{"-v", "--v", "/v", "-name=A", "/name", "B", "extra"});
//
// The above would parse the argument string array, and would invoke the
// lambda expression three times, setting `verbose' to 3 when complete.
// It would also print out "A" and "B" to standard output.
// The returned array would contain the string "extra".
//
// C# 3.0 collection initializers are supported and encouraged:
// var p = new OptionSet () {
// { "h|?|help", v => ShowHelp () },
// };
//
// System.ComponentModel.TypeConverter is also supported, allowing the use of
// custom data types in the callback type; TypeConverter.ConvertFromString()
// is used to convert the value option to an instance of the specified
// type:
//
// var p = new OptionSet () {
// { "foo=", (Foo f) => Console.WriteLine (f.ToString ()) },
// };
//
// Random other tidbits:
// - Boolean options (those w/o '=' or ':' in the option format string)
// are explicitly enabled if they are followed with '+', and explicitly
// disabled if they are followed with '-':
// string a = null;
// var p = new OptionSet () {
// { "a", s => a = s },
// };
// p.Parse (new string[]{"-a"}); // sets v != null
// p.Parse (new string[]{"-a+"}); // sets v != null
// p.Parse (new string[]{"-a-"}); // sets v == null
//
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.IO;
using System.Runtime.Serialization;
using System.Security.Permissions;
using System.Text;
using System.Text.RegularExpressions;
#if LINQ
using System.Linq;
#endif
namespace fnecore.Utility
{
/// <summary>
/// </summary>
public static class StringCoda
{
/*
** Methods
*/
/// <summary>
/// </summary>
public static IEnumerable<string> WrappedLines(string self, params int[] widths)
{
IEnumerable<int> w = widths;
return WrappedLines(self, w);
}
/// <summary>
/// </summary>
/// <param name="self"></param>
/// <param name="widths"></param>
/// <returns></returns>
public static IEnumerable<string> WrappedLines(string self, IEnumerable<int> widths)
{
if (widths == null)
throw new ArgumentNullException("widths");
return CreateWrappedLinesIterator(self, widths);
}
/// <summary>
/// </summary>
/// <param name="self"></param>
/// <param name="widths"></param>
/// <returns></returns>
private static IEnumerable<string> CreateWrappedLinesIterator(string self, IEnumerable<int> widths)
{
if (string.IsNullOrEmpty(self))
{
yield return string.Empty;
yield break;
}
using (IEnumerator<int> ewidths = widths.GetEnumerator())
{
bool? hw = null;
int width = GetNextWidth(ewidths, int.MaxValue, ref hw);
int start = 0, end;
do
{
end = GetLineEnd(start, width, self);
char c = self[end - 1];
if (char.IsWhiteSpace(c))
--end;
bool needContinuation = end != self.Length && !IsEolChar(c);
string continuation = "";
if (needContinuation)
{
--end;
continuation = "-";
}
string line = self.Substring(start, end - start) + continuation;
yield return line;
start = end;
if (char.IsWhiteSpace(c))
++start;
width = GetNextWidth(ewidths, width, ref hw);
} while (start < self.Length);
}
}
/// <summary>
/// </summary>
/// <param name="ewidths"></param>
/// <param name="curWidth"></param>
/// <param name="eValid"></param>
/// <returns></returns>
private static int GetNextWidth(IEnumerator<int> ewidths, int curWidth, ref bool? eValid)
{
if (!eValid.HasValue || eValid.HasValue && eValid.Value)
{
curWidth = (eValid = ewidths.MoveNext()).Value ? ewidths.Current : curWidth;
// '.' is any character, - is for a continuation
const string minWidth = ".-";
if (curWidth < minWidth.Length)
{
throw new ArgumentOutOfRangeException("widths",
string.Format("Element must be >= {0}, was {1}.", minWidth.Length, curWidth));
}
return curWidth;
}
// no more elements, use the last element.
return curWidth;
}
/// <summary>
/// </summary>
/// <param name="c"></param>
/// <returns></returns>
private static bool IsEolChar(char c)
{
return !char.IsLetterOrDigit(c);
}
/// <summary>
/// </summary>
/// <param name="start"></param>
/// <param name="length"></param>
/// <param name="description"></param>
/// <returns></returns>
private static int GetLineEnd(int start, int length, string description)
{
int end = 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;
}
} // internal static class StringCoda
/// <summary>
/// </summary>
public class OptionValueCollection : IList, IList<string>
{
private readonly OptionContext c;
private readonly List<string> values = new List<string>();
/*
** Properties
*/
/// <summary>
/// </summary>
public int Count
{
get { return values.Count; }
}
/// <summary>
/// </summary>
public bool IsReadOnly
{
get { return false; }
}
/// <summary>
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
object IList.this[int index]
{
get { return this[index]; }
set { (values as IList)[index] = value; }
}
/// <summary>
/// </summary>
/// <param name="index"></param>
/// <returns></returns>
public string this[int index]
{
get
{
AssertValid(index);
return index >= values.Count ? null : values[index];
}
set { values[index] = value; }
}
/// <summary>
/// </summary>
bool ICollection.IsSynchronized
{
get { return (values as ICollection).IsSynchronized; }
}
/// <summary>
/// </summary>
object ICollection.SyncRoot
{
get { return (values as ICollection).SyncRoot; }
}
/// <summary>
/// </summary>
bool IList.IsFixedSize
{
get { return false; }
}
/*
** Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="OptionValueCollection" /> class.
/// </summary>
/// <param name="c"></param>
internal OptionValueCollection(OptionContext c)
{
this.c = c;
}
/// <summary>
/// </summary>
/// <param name="array"></param>
/// <param name="index"></param>
void ICollection.CopyTo(Array array, int index)
{
(values as ICollection).CopyTo(array, index);
}
/// <summary>
/// </summary>
public void Clear()
{
values.Clear();
}
/// <summary>
/// </summary>
/// <returns></returns>
IEnumerator IEnumerable.GetEnumerator()
{
return values.GetEnumerator();
}
/// <summary>
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
int IList.Add(object value)
{
return (values as IList).Add(value);
}
/// <summary>
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
bool IList.Contains(object value)
{
return (values as IList).Contains(value);
}
/// <summary>
/// </summary>
/// <param name="value"></param>
/// <returns></returns>
int IList.IndexOf(object value)
{
return (values as IList).IndexOf(value);
}
/// <summary>
/// </summary>
/// <param name="index"></param>
/// <param name="value"></param>
void IList.Insert(int index, object value)
{
(values as IList).Insert(index, value);
}
/// <summary>
/// </summary>
/// <param name="value"></param>
void IList.Remove(object value)
{
(values as IList).Remove(value);
}
/// <summary>
/// </summary>
/// <param name="index"></param>
void IList.RemoveAt(int index)
{
(values as IList).RemoveAt(index);
}
/// <summary>
/// </summary>
/// <param name="item"></param>
public void Add(string item)
{
values.Add(item);
}
/// <summary>
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public bool Contains(string item)
{
return values.Contains(item);
}
/// <summary>
/// </summary>
/// <param name="array"></param>
/// <param name="arrayIndex"></param>
public void CopyTo(string[] array, int arrayIndex)
{
values.CopyTo(array, arrayIndex);
}
/// <summary>
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public bool Remove(string item)
{
return values.Remove(item);
}
/// <summary>
/// </summary>
/// <returns></returns>
public IEnumerator<string> GetEnumerator()
{
return values.GetEnumerator();
}
/// <summary>
/// </summary>
/// <param name="item"></param>
/// <returns></returns>
public int IndexOf(string item)
{
return values.IndexOf(item);
}
/// <summary>
/// </summary>
/// <param name="index"></param>
/// <param name="item"></param>
public void Insert(int index, string item)
{
values.Insert(index, item);
}
/// <summary>
/// </summary>
/// <param name="index"></param>
public void RemoveAt(int index)
{
values.RemoveAt(index);
}
/// <summary>
/// </summary>
/// <param name="index"></param>
private void AssertValid(int index)
{
if (c.Option == null)
throw new InvalidOperationException("OptionContext.Option is null.");
if (index >= c.Option.MaxValueCount)
throw new ArgumentOutOfRangeException("index");
if (c.Option.OptionValueType == OptionValueType.Required && index >= values.Count)
throw new OptionException(string.Format(c.OptionSet.MessageLocalizer("Missing required value for option '{0}'."), c.OptionName), c.OptionName);
}
/// <summary>
/// </summary>
/// <returns></returns>
public List<string> ToList()
{
return new List<string>(values);
}
/// <summary>
/// </summary>
/// <returns></returns>
public string[] ToArray()
{
return values.ToArray();
}
/// <inheritdoc />
public override string ToString()
{
return string.Join(", ", values.ToArray());
}
} // internal class OptionValueCollection : IList, IList<string>
/// <summary>
/// </summary>
public class OptionContext
{
/*
** Properties
*/
/// <summary>
/// </summary>
public Option Option { get; set; }
/// <summary>
/// </summary>
public string OptionName { get; set; }
/// <summary>
/// </summary>
public int OptionIndex { get; set; }
/// <summary>
/// </summary>
public OptionSet OptionSet { get; }
/// <summary>
/// </summary>
public OptionValueCollection OptionValues { get; }
/*
** Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="OptionContext" /> class.
/// </summary>
/// <param name="set"></param>
public OptionContext(OptionSet set)
{
OptionSet = set;
OptionValues = new OptionValueCollection(this);
}
} // internal class OptionContext
/// <summary>
/// Enumeration of the various command line option types.
/// </summary>
public enum OptionValueType
{
None,
Optional,
Required
}
/// <summary>
/// </summary>
public abstract class Option
{
private static readonly char[] NameTerminator = { '=', ':' };
/*
** Properties
*/
/// <summary>
/// </summary>
public string Prototype { get; }
/// <summary>
/// </summary>
public string Description { get; }
/// <summary>
/// </summary>
public OptionValueType OptionValueType { get; }
/// <summary>
/// </summary>
public int MaxValueCount { get; }
/// <summary>
/// </summary>
internal string[] Names { get; }
/// <summary>
/// </summary>
internal string[] ValueSeparators { get; private set; }
/*
** Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="Option" /> class.
/// </summary>
/// <param name="prototype"></param>
/// <param name="description"></param>
protected Option(string prototype, string description) : this(prototype, description, 1)
{
/* stub */
}
/// <summary>
/// Initializes a new instance of the <see cref="Option" /> class.
/// </summary>
/// <param name="prototype"></param>
/// <param name="description"></param>
/// <param name="maxValueCount"></param>
protected Option(string prototype, string description, int maxValueCount)
{
if (prototype == null)
throw new ArgumentNullException("prototype");
if (prototype.Length == 0)
throw new ArgumentException("Cannot be the empty string.", "prototype");
if (maxValueCount < 0)
throw new ArgumentOutOfRangeException("maxValueCount");
Prototype = prototype;
Description = description;
MaxValueCount = maxValueCount;
Names = this is OptionSet.Category
// append GetHashCode() so that "duplicate" categories have distinct
// names, e.g. adding multiple "" categories should be valid.
?
new[] { prototype + GetHashCode() } :
prototype.Split('|');
if (this is OptionSet.Category)
return;
OptionValueType = ParsePrototype();
if (MaxValueCount == 0 && OptionValueType != OptionValueType.None)
throw new ArgumentException("Cannot provide maxValueCount of 0 for OptionValueType.Required or " + "OptionValueType.Optional.",
"maxValueCount");
if (OptionValueType == OptionValueType.None && maxValueCount > 1)
throw new ArgumentException(string.Format("Cannot provide maxValueCount of {0} for OptionValueType.None.", maxValueCount),
"maxValueCount");
if (Array.IndexOf(Names, "<>") >= 0 && (Names.Length == 1 && OptionValueType != OptionValueType.None || Names.Length > 1 && MaxValueCount > 1))
throw new ArgumentException("The default option handler '<>' cannot require values.", "prototype");
}
/// <summary>
/// </summary>
/// <returns></returns>
public string[] GetNames()
{
return (string[])Names.Clone();
}
/// <summary>
/// </summary>
/// <returns></returns>
public string[] GetValueSeparators()
{
if (ValueSeparators == null)
return new string[0];
return (string[])ValueSeparators.Clone();
}
/// <summary>
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="value"></param>
/// <param name="c"></param>
/// <returns></returns>
protected static T Parse<T>(string value, OptionContext c)
{
Type tt = typeof(T);
bool nullable = tt.IsValueType && tt.IsGenericType && !tt.IsGenericTypeDefinition && tt.GetGenericTypeDefinition() == typeof(Nullable<>);
Type targetType = nullable ? tt.GetGenericArguments()[0] : typeof(T);
TypeConverter conv = TypeDescriptor.GetConverter(targetType);
T t = default(T);
try
{
if (value != null)
t = (T)conv.ConvertFromString(value);
}
catch (Exception e)
{
throw new OptionException(string.Format(c.OptionSet.MessageLocalizer("Could not convert string `{0}' to type {1} for option `{2}'."),
value, targetType.Name, c.OptionName), c.OptionName, e);
}
return t;
}
/// <summary>
/// </summary>
/// <returns></returns>
private OptionValueType ParsePrototype()
{
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 (MaxValueCount <= 1 && seps.Count != 0)
throw new ArgumentException(string.Format("Cannot provide key/value separators for Options taking {0} value(s).",
MaxValueCount), "prototype");
if (MaxValueCount > 1)
{
if (seps.Count == 0)
ValueSeparators = new[] { ":", "=" };
else if (seps.Count == 1 && seps[0].Length == 0)
ValueSeparators = null;
else
ValueSeparators = seps.ToArray();
}
return type == '=' ? OptionValueType.Required : OptionValueType.Optional;
}
/// <summary>
/// </summary>
/// <param name="name"></param>
/// <param name="end"></param>
/// <param name="seps"></param>
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");
}
/// <summary>
/// </summary>
/// <param name="c"></param>
public void Invoke(OptionContext c)
{
OnParseComplete(c);
c.OptionName = null;
c.Option = null;
c.OptionValues.Clear();
}
/// <summary>
/// </summary>
/// <param name="c"></param>
protected abstract void OnParseComplete(OptionContext c);
/// <inheritdoc />
public override string ToString()
{
return Prototype;
}
} // internal abstract class Option
/// <summary>
/// </summary>
public abstract class ArgumentSource
{
/*
** Properties
*/
/// <summary>
/// </summary>
public abstract string Description { get; }
/*
** Methods
*/
/// <summary>
/// </summary>
/// <returns></returns>
public abstract string[] GetNames();
/// <summary>
/// </summary>
/// <param name="value"></param>
/// <param name="replacement"></param>
/// <returns></returns>
public abstract bool GetArguments(string value, out IEnumerable<string> replacement);
/// <summary>
/// </summary>
/// <param name="file"></param>
/// <returns></returns>
public static IEnumerable<string> GetArgumentsFromFile(string file)
{
return GetArguments(File.OpenText(file), true);
}
/// <summary>
/// </summary>
/// <param name="reader"></param>
/// <returns></returns>
public static IEnumerable<string> GetArguments(TextReader reader)
{
return GetArguments(reader, false);
}
/// <summary>
/// </summary>
/// <param name="reader"></param>
/// <param name="close"></param>
/// <returns></returns>
private 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.Close();
}
}
} // internal abstract class ArgumentSource
/// <summary>
/// </summary>
internal class ResponseFileSource : ArgumentSource
{
/*
** Properties
*/
/// <inheritdoc />
public override string Description
{
get { return "Read response file for more options."; }
}
/*
** Methods
*/
/// <inheritdoc />
public override string[] GetNames()
{
return new[] { "@file" };
}
/// <inheritdoc />
public override bool GetArguments(string value, out IEnumerable<string> replacement)
{
if (string.IsNullOrEmpty(value) || !value.StartsWith("@"))
{
replacement = null;
return false;
}
replacement = GetArgumentsFromFile(value.Substring(1));
return true;
}
} // internal class ResponseFileSource : ArgumentSource
/// <summary>
/// </summary>
[Serializable]
public class OptionException : Exception
{
/*
** Properties
*/
/// <summary>
/// </summary>
public string OptionName { get; }
/*
** Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="OptionException" /> class.
/// </summary>
public OptionException()
{
/* stub */
}
/// <summary>
/// Initializes a new instance of the <see cref="OptionException" /> class.
/// </summary>
/// <param name="message"></param>
/// <param name="optionName"></param>
public OptionException(string message, string optionName) : base(message)
{
OptionName = optionName;
}
/// <summary>
/// Initializes a new instance of the <see cref="OptionException" /> class.
/// </summary>
/// <param name="message"></param>
/// <param name="optionName"></param>
/// <param name="innerException"></param>
public OptionException(string message, string optionName, Exception innerException) : base(message,
innerException)
{
OptionName = optionName;
}
/// <summary>
/// Initializes a new instance of the <see cref="OptionException" /> class.
/// </summary>
/// <param name="info"></param>
/// <param name="context"></param>
protected OptionException(SerializationInfo info, StreamingContext context) : base(info, context)
{
OptionName = info.GetString("OptionName");
}
/// <inheritdoc />
[SecurityPermission(SecurityAction.LinkDemand, SerializationFormatter = true)]
public override void GetObjectData(SerializationInfo info, StreamingContext context)
{
base.GetObjectData(info, context);
info.AddValue("OptionName", OptionName);
}
} // internal class OptionException : Exception
public delegate void OptionAction<TKey, TValue>(TKey key, TValue value);
/// <summary>
/// </summary>
public class OptionSet : KeyedCollection<string, Option>
{
private const int OptionWidth = 29;
private const int Description_FirstWidth = 80 - OptionWidth;
private const int Description_RemWidth = 80 - OptionWidth - 2;
private readonly List<ArgumentSource> sources = new List<ArgumentSource>();
private readonly Regex ValueOption = new Regex(@"^(?<flag>--|-|/)(?<name>[^:=]+)((?<sep>[:=])(?<value>.*))?$");
/*
** Classes
*/
/// <summary>
/// </summary>
internal sealed class Category : Option
{
/**
* Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="Category" /> class.
/// </summary>
/// <remarks>
/// 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.
/// </remarks>
/// <param name="description"></param>
public Category(string description) : base("=:Category:= " + description, description)
{
/* stub */
}
/// <inheritdoc />
protected override void OnParseComplete(OptionContext c)
{
throw new NotSupportedException("Category.OnParseComplete should not be invoked.");
}
} // internal sealed class Category : Option
/// <summary>
/// </summary>
private sealed class ActionOption : Option
{
private readonly Action<OptionValueCollection> action;
/**
* Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="ActionOption" /> class.
/// </summary>
/// <param name="prototype"></param>
/// <param name="description"></param>
/// <param name="count"></param>
/// <param name="action"></param>
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;
}
/// <inheritdoc />
protected override void OnParseComplete(OptionContext c)
{
action(c.OptionValues);
}
} // private sealed class ActionOption : Option
/// <summary>
/// </summary>
/// <typeparam name="T"></typeparam>
private sealed class ActionOption<T> : Option
{
private readonly Action<T> action;
/**
* Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="ActionOption{T}" /> class.
/// </summary>
/// <param name="prototype"></param>
/// <param name="description"></param>
/// <param name="action"></param>
public ActionOption(string prototype, string description, Action<T> action) : base(prototype, description, 1)
{
if (action == null)
throw new ArgumentNullException("action");
this.action = action;
}
/// <inheritdoc />
protected override void OnParseComplete(OptionContext c)
{
action(Parse<T>(c.OptionValues[0], c));
}
} // private sealed class ActionOption<T> : Option
/// <summary>
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <typeparam name="TValue"></typeparam>
private sealed class ActionOption<TKey, TValue> : Option
{
private readonly OptionAction<TKey, TValue> action;
/// <summary>
/// Initializes a new instance of the <see cref="ActionOption{TKey, TValue}" /> class.
/// </summary>
/// <param name="prototype"></param>
/// <param name="description"></param>
/// <param name="action"></param>
public ActionOption(string prototype, string description, OptionAction<TKey, TValue> action) : base(prototype, description, 2)
{
if (action == null)
throw new ArgumentNullException("action");
this.action = action;
}
/// <inheritdoc />
protected override void OnParseComplete(OptionContext c)
{
action(Parse<TKey>(c.OptionValues[0], c), Parse<TValue>(c.OptionValues[1], c));
}
} // private sealed class ActionOption<TKey, TValue> : Option
/// <summary>
/// </summary>
private class ArgumentEnumerator : IEnumerable<string>
{
private readonly List<IEnumerator<string>> sources = new List<IEnumerator<string>>();
/**
* Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="ArgumentEnumerator" /> class.
/// </summary>
/// <param name="arguments"></param>
public ArgumentEnumerator(IEnumerable<string> arguments)
{
sources.Add(arguments.GetEnumerator());
}
/// <summary>
/// </summary>
/// <returns></returns>
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);
}
/// <summary>
/// </summary>
/// <returns></returns>
IEnumerator IEnumerable.GetEnumerator()
{
return GetEnumerator();
}
/// <summary>
/// </summary>
/// <param name="arguments"></param>
public void Add(IEnumerable<string> arguments)
{
sources.Add(arguments.GetEnumerator());
}
} // private class ArgumentEnumerator : IEnumerable<string>
/*
** Properties
*/
/// <summary>
/// </summary>
public Converter<string, string> MessageLocalizer { get; }
/// <summary>
/// </summary>
public ReadOnlyCollection<ArgumentSource> ArgumentSources { get; }
/*
** Methods
*/
/// <summary>
/// Initializes a new instance of the <see cref="OptionSet" /> class.
/// </summary>
public OptionSet() : this(delegate (string f) { return f; })
{
/* stub */
}
/// <summary>
/// Initializes a new instance of the <see cref="OptionSet" /> class.
/// </summary>
/// <param name="localizer"></param>
public OptionSet(Converter<string, string> localizer)
{
MessageLocalizer = localizer;
ArgumentSources = new ReadOnlyCollection<ArgumentSource>(sources);
}
/// <inheritdoc />
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!");
}
/// <summary>
/// </summary>
/// <param name="option"></param>
/// <returns></returns>
[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;
}
}
/// <inheritdoc />
protected override void InsertItem(int index, Option item)
{
base.InsertItem(index, item);
AddImpl(item);
}
/// <inheritdoc />
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]);
}
/// <inheritdoc />
protected override void SetItem(int index, Option item)
{
base.SetItem(index, item);
AddImpl(item);
}
/// <summary>
/// </summary>
/// <param name="option"></param>
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;
}
}
/// <summary>
/// </summary>
/// <param name="header"></param>
/// <returns></returns>
public OptionSet Add(string header)
{
if (header == null)
throw new ArgumentNullException("header");
Add(new Category(header));
return this;
}
/// <summary>
/// </summary>
/// <param name="option"></param>
/// <returns></returns>
public new OptionSet Add(Option option)
{
base.Add(option);
return this;
}
/// <summary>
/// </summary>
/// <param name="prototype"></param>
/// <param name="action"></param>
/// <returns></returns>
public OptionSet Add(string prototype, Action<string> action)
{
return Add(prototype, null, action);
}
/// <summary>
/// </summary>
/// <param name="prototype"></param>
/// <param name="description"></param>
/// <param name="action"></param>
/// <returns></returns>
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;
}
/// <summary>
/// </summary>
/// <param name="prototype"></param>
/// <param name="action"></param>
/// <returns></returns>
public OptionSet Add(string prototype, OptionAction<string, string> action)
{
return Add(prototype, null, action);
}
/// <summary>
/// </summary>
/// <param name="prototype"></param>
/// <param name="description"></param>
/// <param name="action"></param>
/// <returns></returns>
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;
}
/// <summary>
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="prototype"></param>
/// <param name="action"></param>
/// <returns></returns>
public OptionSet Add<T>(string prototype, Action<T> action)
{
return Add(prototype, null, action);
}
/// <summary>
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="prototype"></param>
/// <param name="description"></param>
/// <param name="action"></param>
/// <returns></returns>
public OptionSet Add<T>(string prototype, string description, Action<T> action)
{
return Add(new ActionOption<T>(prototype, description, action));
}
/// <summary>
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <param name="prototype"></param>
/// <param name="action"></param>
/// <returns></returns>
public OptionSet Add<TKey, TValue>(string prototype, OptionAction<TKey, TValue> action)
{
return Add(prototype, null, action);
}
/// <summary>
/// </summary>
/// <typeparam name="TKey"></typeparam>
/// <typeparam name="TValue"></typeparam>
/// <param name="prototype"></param>
/// <param name="description"></param>
/// <param name="action"></param>
/// <returns></returns>
public OptionSet Add<TKey, TValue>(string prototype, string description, OptionAction<TKey, TValue> action)
{
return Add(new ActionOption<TKey, TValue>(prototype, description, action));
}
/// <summary>
/// </summary>
/// <param name="source"></param>
/// <returns></returns>
public OptionSet Add(ArgumentSource source)
{
if (source == null)
throw new ArgumentNullException("source");
sources.Add(source);
return this;
}
/// <summary>
/// </summary>
/// <returns></returns>
protected virtual OptionContext CreateOptionContext()
{
return new OptionContext(this);
}
/// <summary>
/// </summary>
/// <param name="arguments"></param>
/// <returns></returns>
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;
}
/// <summary>
/// </summary>
/// <param name="ae"></param>
/// <param name="argument"></param>
/// <returns></returns>
private 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;
}
/// <summary>
/// </summary>
/// <param name="extra"></param>
/// <param name="def"></param>
/// <param name="c"></param>
/// <param name="argument"></param>
/// <returns></returns>
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;
}
/// <summary>
/// </summary>
/// <param name="argument"></param>
/// <param name="flag"></param>
/// <param name="name"></param>
/// <param name="sep"></param>
/// <param name="value"></param>
/// <returns></returns>
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;
}
/// <summary>
/// </summary>
/// <param name="argument"></param>
/// <param name="c"></param>
/// <returns></returns>
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;
}
/// <summary>
/// </summary>
/// <param name="option"></param>
/// <param name="c"></param>
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[] { 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(MessageLocalizer(string.Format("Error: Found {0} option values when expecting {1}.",
c.OptionValues.Count, c.Option.MaxValueCount)), c.OptionName);
}
/// <summary>
/// </summary>
/// <param name="option"></param>
/// <param name="n"></param>
/// <param name="c"></param>
/// <returns></returns>
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;
}
/// <summary>
/// </summary>
/// <param name="f"></param>
/// <param name="n"></param>
/// <param name="c"></param>
/// <returns></returns>
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];
string rn = n[i].ToString();
if (!Contains(rn))
{
if (i == 0)
return false;
throw new OptionException(
string.Format(MessageLocalizer("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;
}
/// <summary>
/// </summary>
/// <param name="c"></param>
/// <param name="name"></param>
/// <param name="value"></param>
/// <param name="option"></param>
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);
}
/// <summary>
/// </summary>
/// <param name="o"></param>
public void WriteOptionDescriptions(TextWriter o)
{
foreach (Option p in this)
{
int written = 0;
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);
}
}
/// <summary>
/// </summary>
/// <param name="o"></param>
/// <param name="value"></param>
/// <param name="prefix"></param>
/// <param name="firstWidth"></param>
/// <param name="remWidth"></param>
private void WriteDescription(TextWriter o, string value, string prefix, int firstWidth, int remWidth)
{
bool indent = false;
foreach (string line in GetLines(MessageLocalizer(GetDescription(value)), firstWidth, remWidth))
{
if (indent)
o.Write(prefix);
o.WriteLine(line);
indent = true;
}
}
/// <summary>
/// </summary>
/// <param name="o"></param>
/// <param name="p"></param>
/// <param name="written"></param>
/// <returns></returns>
private 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, MessageLocalizer("["));
Write(o, ref written, MessageLocalizer("=" + 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, MessageLocalizer(sep + GetArgumentName(c, p.MaxValueCount, p.Description)));
if (p.OptionValueType == OptionValueType.Optional) Write(o, ref written, MessageLocalizer("]"));
}
return true;
}
/// <summary>
/// </summary>
/// <param name="names"></param>
/// <param name="i"></param>
/// <returns></returns>
private static int GetNextOptionIndex(string[] names, int i)
{
while (i < names.Length && names[i] == "<>") ++i;
return i;
}
/// <summary>
/// </summary>
/// <param name="o"></param>
/// <param name="n"></param>
/// <param name="s"></param>
private static void Write(TextWriter o, ref int n, string s)
{
n += s.Length;
o.Write(s);
}
/// <summary>
/// </summary>
/// <param name="index"></param>
/// <param name="maxIndex"></param>
/// <param name="description"></param>
/// <returns></returns>
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[] { "{0:", "{" };
else
nameStart = new[] { "{" + 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);
}
/// <summary>
/// </summary>
/// <param name="description"></param>
/// <returns></returns>
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();
}
/// <summary>
/// </summary>
/// <param name="description"></param>
/// <param name="firstWidth"></param>
/// <param name="remWidth"></param>
/// <returns></returns>
private static IEnumerable<string> GetLines(string description, int firstWidth, int remWidth)
{
return StringCoda.WrappedLines(description, firstWidth, remWidth);
}
} // internal class OptionSet : KeyedCollection<string, Option>
} // namespace fnecore.Utility

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