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using System;
using System.Collections.Specialized;
using System.Text.RegularExpressions;
namespace CommandLine.Utility
{
/// <summary>
/// Arguments class
/// </summary>
public class Arguments
{
// Variables
private StringDictionary Parameters;
// Constructor
public Arguments(string[] Args)
{
Parameters = new StringDictionary();
Regex Splitter = new Regex(@"^-{1,2}|=|:",
RegexOptions.IgnoreCase | RegexOptions.Compiled);
Regex Remover = new Regex(@"^['""]?(.*?)['""]?$",
RegexOptions.IgnoreCase | RegexOptions.Compiled);
string Parameter = null;
string[] Parts;
// Valid parameters forms:
// {-,/,--}param{ ,=,:}((",')value(",'))
// Examples:
// -param1 value1 --param2 /param3:"Test-:-work"
// /param4=happy -param5 '--=nice=--'
foreach (string Txt in Args)
{
// Look for new parameters (-,/ or --) and a
// possible enclosed value (=,:)
Parts = Splitter.Split(Txt, 3);
switch (Parts.Length)
{
// Found a value (for the last parameter
// found (space separator))
case 1:
if (Parameter != null)
{
if (!Parameters.ContainsKey(Parameter))
{
Parts[0] =
Remover.Replace(Parts[0], "$1");
Parameters.Add(Parameter, Parts[0]);
}
Parameter = null;
}
// else Error: no parameter waiting for a value (skipped)
break;
// Found just a parameter
case 2:
// The last parameter is still waiting.
// With no value, set it to true.
if (Parameter != null)
{
if (!Parameters.ContainsKey(Parameter))
Parameters.Add(Parameter, "true");
}
Parameter = Parts[1];
break;
// Parameter with enclosed value
case 3:
// The last parameter is still waiting.
// With no value, set it to true.
if (Parameter != null)
{
if (!Parameters.ContainsKey(Parameter))
Parameters.Add(Parameter, "true");
}
Parameter = Parts[1];
// Remove possible enclosing characters (",')
if (!Parameters.ContainsKey(Parameter))
{
Parts[2] = Remover.Replace(Parts[2], "$1");
Parameters.Add(Parameter, Parts[2]);
}
Parameter = null;
break;
}
}
// In case a parameter is still waiting
if (Parameter != null)
{
if (!Parameters.ContainsKey(Parameter))
Parameters.Add(Parameter, "true");
}
}
// Retrieve a parameter value if it exists
// (overriding C# indexer property)
public string this[string Param]
{
get
{
return (Parameters[Param]);
}
}
}
}
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