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//
// ProductHeaderValue.cs
//
// Authors:
// Marek Safar <marek.safar@gmail.com>
//
// Copyright (C) 2011 Xamarin Inc (http://www.xamarin.com)
//
// 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.
//
using System.Collections.Generic;
namespace System.Net.Http.Headers
{
public class ProductHeaderValue : ICloneable
{
public ProductHeaderValue (string name)
{
Parser.Token.Check (name);
Name = name;
}
public ProductHeaderValue (string name, string version)
: this (name)
{
if (version != null)
Parser.Token.Check (version);
Version = version;
}
internal ProductHeaderValue ()
{
}
public string Name { get; internal set; }
public string Version { get; internal set; }
object ICloneable.Clone ()
{
return MemberwiseClone ();
}
public override bool Equals (object obj)
{
var source = obj as ProductHeaderValue;
if (source == null)
return false;
return string.Equals (source.Name, Name, StringComparison.OrdinalIgnoreCase) &&
string.Equals (source.Version, Version, StringComparison.OrdinalIgnoreCase);
}
public override int GetHashCode ()
{
var hc = Name.ToLowerInvariant ().GetHashCode ();
if (Version != null)
hc ^= Version.ToLowerInvariant ().GetHashCode ();
return hc;
}
public static ProductHeaderValue Parse (string input)
{
ProductHeaderValue value;
if (TryParse (input, out value))
return value;
throw new FormatException (input);
}
public static bool TryParse (string input, out ProductHeaderValue parsedValue)
{
var lexer = new Lexer (input);
Token token;
if (TryParseElement (lexer, out parsedValue, out token) && token == Token.Type.End)
return true;
parsedValue = null;
return false;
}
internal static bool TryParse (string input, int minimalCount, out List<ProductHeaderValue> result)
{
return CollectionParser.TryParse (input, minimalCount, TryParseElement, out result);
}
static bool TryParseElement (Lexer lexer, out ProductHeaderValue parsedValue, out Token t)
{
parsedValue = null;
t = lexer.Scan ();
if (t != Token.Type.Token)
return false;
parsedValue = new ProductHeaderValue ();
parsedValue.Name = lexer.GetStringValue (t);
t = lexer.Scan ();
if (t == Token.Type.SeparatorSlash) {
t = lexer.Scan ();
if (t != Token.Type.Token)
return false;
parsedValue.Version = lexer.GetStringValue (t);
t = lexer.Scan ();
}
return true;
}
public override string ToString ()
{
return Version == null ? Name : Name + "/" + Version;
}
}
}
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