public override MatchResult Match(IList<Pattern> left, IEnumerable<Pattern> collected = null)
{
var coll = collected ?? new List<Pattern>();
var sresult = SingleMatch(left);
var match = sresult.Match;
if (match == null)
{
return new MatchResult(false, left, coll);
}
var left_ = new List<Pattern>();
left_.AddRange(left.Take(sresult.Position));
left_.AddRange(left.Skip(sresult.Position + 1));
var sameName = coll.Where(a => a.Name == Name).ToList();
if (Value != null && (Value.IsList || Value.IsOfTypeInt))
{
var increment = new ValueObject(1);
if (!Value.IsOfTypeInt)
{
increment = match.Value.IsString ? new ValueObject(new [] {match.Value}) : match.Value;
}
if (sameName.Count == 0)
{
match.Value = increment;
var res = new List<Pattern>(coll) {match};
return new MatchResult(true, left_, res);
}
sameName[0].Value.Add(increment);
return new MatchResult(true, left_, coll);
}
var resColl = new List<Pattern>();
resColl.AddRange(coll);
resColl.Add(match);
return new MatchResult(true, left_, resColl);
}
public static Option Parse(string optionDescription)
{
if (optionDescription == null) throw new ArgumentNullException("optionDescription");
string shortName = null;
string longName = null;
var argCount = 0;
var value = new ValueObject(false);
var p = new StringPartition(optionDescription, DESC_SEPARATOR);
var options = p.LeftString;
var description = p.RightString;
foreach (var s in options.Split(" \t,=".ToCharArray(), StringSplitOptions.RemoveEmptyEntries))
{
if (s.StartsWith("--"))
longName = s;
else if (s.StartsWith("-"))
{
shortName = s;
}
else
{
argCount = 1;
}
}
if (argCount > 0)
{
var r = new Regex(@"\[default: (.*)\]", RegexOptions.IgnoreCase);
var m = r.Match(description);
value = m.Success ? new ValueObject(m.Groups[1].Value) : null;
}
return new Option(shortName, longName, argCount, value);
}
public Option(string shortName = null, string longName = null, int argCount = 0, ValueObject value = null)
: base()
{
ShortName = shortName;
LongName = longName;
ArgCount = argCount;
var v = value ?? new ValueObject(false);
Value = (v.IsFalse && argCount > 0) ? null : v;
}
public Argument(string name, ValueObject value = null) : base(name, value)
{
}
private static IEnumerable<Pattern> ParseLong(Tokens tokens, ICollection<Option> options)
{
// long ::= '--' chars [ ( ' ' | '=' ) chars ] ;
var p = new StringPartition(tokens.Move(), "=");
var longName = p.LeftString;
Debug.Assert(longName.StartsWith("--"));
var value = (p.NoSeparatorFound) ? null : new ValueObject(p.RightString);
var similar = options.Where(o => o.LongName == longName).ToList();
if (tokens.ThrowsInputError && similar.Count == 0)
{
// If not exact match
similar =
options.Where(o => !String.IsNullOrEmpty(o.LongName) && o.LongName.StartsWith(longName)).ToList();
}
if (similar.Count > 1)
{
// Might be simply specified ambiguously 2+ times?
throw tokens.CreateException(string.Format("{0} is not a unique prefix: {1}?", longName,
string.Join(", ", similar.Select(o => o.LongName))));
}
Option option = null;
if (similar.Count < 1)
{
var argCount = p.Separator == "=" ? 1 : 0;
option = new Option(null, longName, argCount);
options.Add(option);
if (tokens.ThrowsInputError)
option = new Option(null, longName, argCount, argCount != 0 ? value : new ValueObject(true));
}
else
{
option = new Option(similar[0].ShortName, similar[0].LongName, similar[0].ArgCount, similar[0].Value);
if (option.ArgCount == 0)
{
if (value != null)
throw tokens.CreateException(option.LongName + " must not have an argument");
}
else
{
if (value == null)
{
if (tokens.Current() == null || tokens.Current() == "--")
throw tokens.CreateException(option.LongName + " requires an argument");
value = new ValueObject(tokens.Move());
}
}
if (tokens.ThrowsInputError)
option.Value = value ?? new ValueObject(true);
}
return new[] {option};
}
private static IEnumerable<Pattern> ParseShorts(Tokens tokens, ICollection<Option> options)
{
// shorts ::= '-' ( chars )* [ [ ' ' ] chars ] ;
var token = tokens.Move();
Debug.Assert(token.StartsWith("-") && !token.StartsWith("--"));
var left = token.TrimStart(new[] {'-'});
var parsed = new List<Pattern>();
while (left != "")
{
var shortName = "-" + left[0];
left = left.Substring(1);
var similar = options.Where(o => o.ShortName == shortName).ToList();
Option option = null;
if (similar.Count > 1)
{
throw tokens.CreateException(string.Format("{0} is specified ambiguously {1} times", shortName,
similar.Count));
}
if (similar.Count < 1)
{
option = new Option(shortName, null, 0);
options.Add(option);
if (tokens.ThrowsInputError)
{
option = new Option(shortName, null, 0, new ValueObject(true));
}
}
else
{
// why is copying necessary here?
option = new Option(shortName, similar[0].LongName, similar[0].ArgCount, similar[0].Value);
ValueObject value = null;
if (option.ArgCount != 0)
{
if (left == "")
{
if (tokens.Current() == null || tokens.Current() == "--")
{
throw tokens.CreateException(shortName + " requires argument");
}
value = new ValueObject(tokens.Move());
}
else
{
value = new ValueObject(left);
left = "";
}
}
if (tokens.ThrowsInputError)
option.Value = value ?? new ValueObject(true);
}
parsed.Add(option);
}
return parsed;
}
public Command(string name, ValueObject value = null) : base(name, value ?? new ValueObject(false))
{
}
protected LeafPattern(string name, ValueObject value=null)
{
_name = name;
Value = value;
}
static string Normalize(ValueObject v)
{
if (v == null) return null;
var s = v.ToString();
return string.IsNullOrWhiteSpace(s) ? null : s;
}
public void Add(ValueObject increment)
{
if (increment == null) throw new ArgumentNullException("increment");
if (increment.Value == null) throw new InvalidOperationException("increment.Value is null");
if (Value == null) throw new InvalidOperationException("Value is null");
if (increment.IsInt)
{
if (IsList)
(Value as ArrayList).Add(increment.AsInt);
else
Value = increment.AsInt + AsInt;
}
else
{
var l = new ArrayList();
if (IsList)
{
l.AddRange(AsList);
}
else
{
l.Add(Value);
}
if (increment.IsList)
{
l.AddRange(increment.AsList);
}
else
{
l.Add(increment);
}
Value = l;
}
}
private static IEnumerable <Pattern> ParseLong(Tokens tokens, ICollection <Option> options)
{
// long ::= '--' chars [ ( ' ' | '=' ) chars ] ;
var p = new StringPartition(tokens.Move(), "=");
var longName = p.LeftString;
Debug.Assert(longName.StartsWith("--"));
var value = (p.NoSeparatorFound) ? null : new ValueObject(p.RightString);
var similar = options.Where(o => o.LongName == longName).ToList();
if (tokens.ThrowsInputError && similar.Count == 0)
{
// If not exact match
similar =
options.Where(o => !string.IsNullOrEmpty(o.LongName) && o.LongName.StartsWith(longName)).ToList();
}
if (similar.Count > 1)
{
// Might be simply specified ambiguously 2+ times?
throw tokens.CreateException($"{longName} is not a unique prefix: {string.Join(", ", similar.Select(o => o.LongName))}?");
}
Option option = null;
if (similar.Count < 1)
{
var argCount = p.Separator == "=" ? 1 : 0;
option = new Option(null, longName, argCount);
options.Add(option);
if (tokens.ThrowsInputError)
{
option = new Option(null, longName, argCount, argCount != 0 ? value : new ValueObject(true));
}
}
else
{
option = new Option(similar[0].ShortName, similar[0].LongName, similar[0].ArgCount, similar[0].Value);
if (option.ArgCount == 0)
{
if (value != null)
{
throw tokens.CreateException(option.LongName + " must not have an argument");
}
}
else
{
if (value == null)
{
if (tokens.Current() == null || tokens.Current() == "--")
{
throw tokens.CreateException(option.LongName + " requires an argument");
}
value = new ValueObject(tokens.Move());
}
}
if (tokens.ThrowsInputError)
{
option.Value = value ?? new ValueObject(true);
}
}
return(new[] { option });
}
private static IEnumerable <Pattern> ParseShorts(Tokens tokens, ICollection <Option> options)
{
// shorts ::= '-' ( chars )* [ [ ' ' ] chars ] ;
var token = tokens.Move();
Debug.Assert(token.StartsWith("-") && !token.StartsWith("--"));
var left = token.TrimStart('-');
var parsed = new List <Pattern>();
while (left != "")
{
var shortName = "-" + left[0];
left = left.Substring(1);
var similar = options.Where(o => o.ShortName == shortName).ToList();
Option option;
if (similar.Count > 1)
{
throw tokens.CreateException($"{shortName} is specified ambiguously {similar.Count} times");
}
if (similar.Count < 1)
{
option = new Option(shortName);
options.Add(option);
if (tokens.ThrowsInputError)
{
option = new Option(shortName, null, 0, new ValueObject(true));
}
}
else
{
// why is copying necessary here?
option = new Option(shortName, similar[0].LongName, similar[0].ArgCount, similar[0].Value);
ValueObject value = null;
if (option.ArgCount != 0)
{
if (left == "")
{
if (tokens.Current() == null || tokens.Current() == "--")
{
throw tokens.CreateException(shortName + " requires argument");
}
value = new ValueObject(tokens.Move());
}
else
{
value = new ValueObject(left);
left = "";
}
}
if (tokens.ThrowsInputError)
{
option.Value = value ?? new ValueObject(true);
}
}
parsed.Add(option);
}
return(parsed);
}
public Option(string shortName = null, string longName = null, int argCount = 0, ValueObject value = null)
: base()
{
ShortName = shortName;
LongName = longName;
ArgCount = argCount;
var v = value ?? new ValueObject(false);
Value = (v.IsFalse && argCount > 0) ? null : v;
}