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#region Disclaimer / License
// Copyright (C) 2015, The Duplicati Team
// http://www.duplicati.com, info@duplicati.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
//
#endregion
using System;
using System.Collections.Generic;
using System.Text;
namespace Duplicati.Library.Utility
{
/// <summary>
/// Common class for parsing commandline options
/// </summary>
public static class CommandLineParser
{
/// <summary>
/// Reads a list of command line arguments, and removes the options passed,
/// and returns them in a dictionary. Options are expected to be in the format
/// --name=value or --name, both value and name may be enclosed in double quotes
/// </summary>
/// <returns>The parsed list of commandline options</returns>
/// <param name='args'>The commandline arguments</param>
public static Dictionary<string, string> ExtractOptions(List<string> args, Func<string, string, bool> parserCallback = null)
{
Dictionary<string, string> options = new Dictionary<string, string>();
for (int i = 0; i < args.Count; i++)
{
if (args[i].StartsWith("--", StringComparison.Ordinal))
{
string key = null;
string value = null;
if (args[i].IndexOf("=", StringComparison.Ordinal) > 0)
{
key = args[i].Substring(0, args[i].IndexOf("=", StringComparison.Ordinal));
value = args[i].Substring(args[i].IndexOf("=", StringComparison.Ordinal) + 1);
}
else
key = args[i];
//Skip the leading --
key = key.Substring(2).ToLower(System.Globalization.CultureInfo.InvariantCulture);
if (!string.IsNullOrEmpty(value) && value.Length > 1 && value.StartsWith("\"", StringComparison.Ordinal) && value.EndsWith("\"", StringComparison.Ordinal))
value = value.Substring(1, value.Length - 2);
//Last argument overwrites the current
if (parserCallback == null || parserCallback(key, value))
options[key] = value;
args.RemoveAt(i);
i--;
}
}
return options;
}
}
}
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