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linux-packaging-mono/mcs/class/System/System.Net/HttpUtility.cs
Jo Shields 8b9b85e7f5 Imported Upstream version 3.10.0 
Former-commit-id: 172c8e3c300b39d5785c7a3e8dfb08ebdbc1a99b
2014-10-04 11:27:48 +01:00

1452 lines
46 KiB
C#
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//
// Copied from System.Web.HttpUtility and marked internal
//
// Authors:
// Patrik Torstensson (Patrik.Torstensson@labs2.com)
// Wictor Wilén (decode/encode functions) (wictor@ibizkit.se)
// Tim Coleman (tim@timcoleman.com)
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
// Marek Safar (marek.safar@gmail.com)
//
// Copyright (C) 2005-2009 Novell, Inc (http://www.novell.com)
// Copyright (C) 2014 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;
using System.Collections.Generic;
using System.Collections.Specialized;
using System.Globalization;
using System.IO;
using System.Security.Permissions;
using System.Text;
namespace System.Net {
static class HttpUtility
{
sealed class HttpQSCollection : NameValueCollection
{
public override string ToString ()
{
int count = Count;
if (count == 0)
return "";
StringBuilder sb = new StringBuilder ();
string [] keys = AllKeys;
for (int i = 0; i < count; i++) {
sb.AppendFormat ("{0}={1}&", keys [i], this [keys [i]]);
}
if (sb.Length > 0)
sb.Length--;
return sb.ToString ();
}
}
// Must be sorted
static readonly long[] entities = new long[] {
(long)'A' << 56 | (long)'E' << 48 | (long)'l' << 40 | (long)'i' << 32 | (long)'g' << 24,
(long)'A' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'A' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'A' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'A' << 56 | (long)'l' << 48 | (long)'p' << 40 | (long)'h' << 32 | (long)'a' << 24,
(long)'A' << 56 | (long)'r' << 48 | (long)'i' << 40 | (long)'n' << 32 | (long)'g' << 24,
(long)'A' << 56 | (long)'t' << 48 | (long)'i' << 40 | (long)'l' << 32 | (long)'d' << 24 | (long)'e' << 16,
(long)'A' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'B' << 56 | (long)'e' << 48 | (long)'t' << 40 | (long)'a' << 32,
(long)'C' << 56 | (long)'c' << 48 | (long)'e' << 40 | (long)'d' << 32 | (long)'i' << 24 | (long)'l' << 16,
(long)'C' << 56 | (long)'h' << 48 | (long)'i' << 40,
(long)'D' << 56 | (long)'a' << 48 | (long)'g' << 40 | (long)'g' << 32 | (long)'e' << 24 | (long)'r' << 16,
(long)'D' << 56 | (long)'e' << 48 | (long)'l' << 40 | (long)'t' << 32 | (long)'a' << 24,
(long)'E' << 56 | (long)'T' << 48 | (long)'H' << 40,
(long)'E' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'E' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'E' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'E' << 56 | (long)'p' << 48 | (long)'s' << 40 | (long)'i' << 32 | (long)'l' << 24 | (long)'o' << 16 | (long)'n' << 8,
(long)'E' << 56 | (long)'t' << 48 | (long)'a' << 40,
(long)'E' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'G' << 56 | (long)'a' << 48 | (long)'m' << 40 | (long)'m' << 32 | (long)'a' << 24,
(long)'I' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'I' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'I' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'I' << 56 | (long)'o' << 48 | (long)'t' << 40 | (long)'a' << 32,
(long)'I' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'K' << 56 | (long)'a' << 48 | (long)'p' << 40 | (long)'p' << 32 | (long)'a' << 24,
(long)'L' << 56 | (long)'a' << 48 | (long)'m' << 40 | (long)'b' << 32 | (long)'d' << 24 | (long)'a' << 16,
(long)'M' << 56 | (long)'u' << 48,
(long)'N' << 56 | (long)'t' << 48 | (long)'i' << 40 | (long)'l' << 32 | (long)'d' << 24 | (long)'e' << 16,
(long)'N' << 56 | (long)'u' << 48,
(long)'O' << 56 | (long)'E' << 48 | (long)'l' << 40 | (long)'i' << 32 | (long)'g' << 24,
(long)'O' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'O' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'O' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'O' << 56 | (long)'m' << 48 | (long)'e' << 40 | (long)'g' << 32 | (long)'a' << 24,
(long)'O' << 56 | (long)'m' << 48 | (long)'i' << 40 | (long)'c' << 32 | (long)'r' << 24 | (long)'o' << 16 | (long)'n' << 8,
(long)'O' << 56 | (long)'s' << 48 | (long)'l' << 40 | (long)'a' << 32 | (long)'s' << 24 | (long)'h' << 16,
(long)'O' << 56 | (long)'t' << 48 | (long)'i' << 40 | (long)'l' << 32 | (long)'d' << 24 | (long)'e' << 16,
(long)'O' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'P' << 56 | (long)'h' << 48 | (long)'i' << 40,
(long)'P' << 56 | (long)'i' << 48,
(long)'P' << 56 | (long)'r' << 48 | (long)'i' << 40 | (long)'m' << 32 | (long)'e' << 24,
(long)'P' << 56 | (long)'s' << 48 | (long)'i' << 40,
(long)'R' << 56 | (long)'h' << 48 | (long)'o' << 40,
(long)'S' << 56 | (long)'c' << 48 | (long)'a' << 40 | (long)'r' << 32 | (long)'o' << 24 | (long)'n' << 16,
(long)'S' << 56 | (long)'i' << 48 | (long)'g' << 40 | (long)'m' << 32 | (long)'a' << 24,
(long)'T' << 56 | (long)'H' << 48 | (long)'O' << 40 | (long)'R' << 32 | (long)'N' << 24,
(long)'T' << 56 | (long)'a' << 48 | (long)'u' << 40,
(long)'T' << 56 | (long)'h' << 48 | (long)'e' << 40 | (long)'t' << 32 | (long)'a' << 24,
(long)'U' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'U' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'U' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'U' << 56 | (long)'p' << 48 | (long)'s' << 40 | (long)'i' << 32 | (long)'l' << 24 | (long)'o' << 16 | (long)'n' << 8,
(long)'U' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'X' << 56 | (long)'i' << 48,
(long)'Y' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'Y' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'Z' << 56 | (long)'e' << 48 | (long)'t' << 40 | (long)'a' << 32,
(long)'a' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'a' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'a' << 56 | (long)'c' << 48 | (long)'u' << 40 | (long)'t' << 32 | (long)'e' << 24,
(long)'a' << 56 | (long)'e' << 48 | (long)'l' << 40 | (long)'i' << 32 | (long)'g' << 24,
(long)'a' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'a' << 56 | (long)'l' << 48 | (long)'e' << 40 | (long)'f' << 32 | (long)'s' << 24 | (long)'y' << 16 | (long)'m' << 8,
(long)'a' << 56 | (long)'l' << 48 | (long)'p' << 40 | (long)'h' << 32 | (long)'a' << 24,
(long)'a' << 56 | (long)'m' << 48 | (long)'p' << 40,
(long)'a' << 56 | (long)'n' << 48 | (long)'d' << 40,
(long)'a' << 56 | (long)'n' << 48 | (long)'g' << 40,
(long)'a' << 56 | (long)'p' << 48 | (long)'o' << 40 | (long)'s' << 32,
(long)'a' << 56 | (long)'r' << 48 | (long)'i' << 40 | (long)'n' << 32 | (long)'g' << 24,
(long)'a' << 56 | (long)'s' << 48 | (long)'y' << 40 | (long)'m' << 32 | (long)'p' << 24,
(long)'a' << 56 | (long)'t' << 48 | (long)'i' << 40 | (long)'l' << 32 | (long)'d' << 24 | (long)'e' << 16,
(long)'a' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'b' << 56 | (long)'d' << 48 | (long)'q' << 40 | (long)'u' << 32 | (long)'o' << 24,
(long)'b' << 56 | (long)'e' << 48 | (long)'t' << 40 | (long)'a' << 32,
(long)'b' << 56 | (long)'r' << 48 | (long)'v' << 40 | (long)'b' << 32 | (long)'a' << 24 | (long)'r' << 16,
(long)'b' << 56 | (long)'u' << 48 | (long)'l' << 40 | (long)'l' << 32,
(long)'c' << 56 | (long)'a' << 48 | (long)'p' << 40,
(long)'c' << 56 | (long)'c' << 48 | (long)'e' << 40 | (long)'d' << 32 | (long)'i' << 24 | (long)'l' << 16,
(long)'c' << 56 | (long)'e' << 48 | (long)'d' << 40 | (long)'i' << 32 | (long)'l' << 24,
(long)'c' << 56 | (long)'e' << 48 | (long)'n' << 40 | (long)'t' << 32,
(long)'c' << 56 | (long)'h' << 48 | (long)'i' << 40,
(long)'c' << 56 | (long)'i' << 48 | (long)'r' << 40 | (long)'c' << 32,
(long)'c' << 56 | (long)'l' << 48 | (long)'u' << 40 | (long)'b' << 32 | (long)'s' << 24,
(long)'c' << 56 | (long)'o' << 48 | (long)'n' << 40 | (long)'g' << 32,
(long)'c' << 56 | (long)'o' << 48 | (long)'p' << 40 | (long)'y' << 32,
(long)'c' << 56 | (long)'r' << 48 | (long)'a' << 40 | (long)'r' << 32 | (long)'r' << 24,
(long)'c' << 56 | (long)'u' << 48 | (long)'p' << 40,
(long)'c' << 56 | (long)'u' << 48 | (long)'r' << 40 | (long)'r' << 32 | (long)'e' << 24 | (long)'n' << 16,
(long)'d' << 56 | (long)'A' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'d' << 56 | (long)'a' << 48 | (long)'g' << 40 | (long)'g' << 32 | (long)'e' << 24 | (long)'r' << 16,
(long)'d' << 56 | (long)'a' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'d' << 56 | (long)'e' << 48 | (long)'g' << 40,
(long)'d' << 56 | (long)'e' << 48 | (long)'l' << 40 | (long)'t' << 32 | (long)'a' << 24,
(long)'d' << 56 | (long)'i' << 48 | (long)'a' << 40 | (long)'m' << 32 | (long)'s' << 24,
(long)'d' << 56 | (long)'i' << 48 | (long)'v' << 40 | (long)'i' << 32 | (long)'d' << 24 | (long)'e' << 16,
(long)'e' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'e' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'e' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'e' << 56 | (long)'m' << 48 | (long)'p' << 40 | (long)'t' << 32 | (long)'y' << 24,
(long)'e' << 56 | (long)'m' << 48 | (long)'s' << 40 | (long)'p' << 32,
(long)'e' << 56 | (long)'n' << 48 | (long)'s' << 40 | (long)'p' << 32,
(long)'e' << 56 | (long)'p' << 48 | (long)'s' << 40 | (long)'i' << 32 | (long)'l' << 24 | (long)'o' << 16 | (long)'n' << 8,
(long)'e' << 56 | (long)'q' << 48 | (long)'u' << 40 | (long)'i' << 32 | (long)'v' << 24,
(long)'e' << 56 | (long)'t' << 48 | (long)'a' << 40,
(long)'e' << 56 | (long)'t' << 48 | (long)'h' << 40,
(long)'e' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'e' << 56 | (long)'u' << 48 | (long)'r' << 40 | (long)'o' << 32,
(long)'e' << 56 | (long)'x' << 48 | (long)'i' << 40 | (long)'s' << 32 | (long)'t' << 24,
(long)'f' << 56 | (long)'n' << 48 | (long)'o' << 40 | (long)'f' << 32,
(long)'f' << 56 | (long)'o' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'l' << 24 | (long)'l' << 16,
(long)'f' << 56 | (long)'r' << 48 | (long)'a' << 40 | (long)'c' << 32 | (long)'1' << 24 | (long)'2' << 16,
(long)'f' << 56 | (long)'r' << 48 | (long)'a' << 40 | (long)'c' << 32 | (long)'1' << 24 | (long)'4' << 16,
(long)'f' << 56 | (long)'r' << 48 | (long)'a' << 40 | (long)'c' << 32 | (long)'3' << 24 | (long)'4' << 16,
(long)'f' << 56 | (long)'r' << 48 | (long)'a' << 40 | (long)'s' << 32 | (long)'l' << 24,
(long)'g' << 56 | (long)'a' << 48 | (long)'m' << 40 | (long)'m' << 32 | (long)'a' << 24,
(long)'g' << 56 | (long)'e' << 48,
(long)'g' << 56 | (long)'t' << 48,
(long)'h' << 56 | (long)'A' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'h' << 56 | (long)'a' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'h' << 56 | (long)'e' << 48 | (long)'a' << 40 | (long)'r' << 32 | (long)'t' << 24 | (long)'s' << 16,
(long)'h' << 56 | (long)'e' << 48 | (long)'l' << 40 | (long)'l' << 32 | (long)'i' << 24 | (long)'p' << 16,
(long)'i' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'i' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'i' << 56 | (long)'e' << 48 | (long)'x' << 40 | (long)'c' << 32 | (long)'l' << 24,
(long)'i' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'i' << 56 | (long)'m' << 48 | (long)'a' << 40 | (long)'g' << 32 | (long)'e' << 24,
(long)'i' << 56 | (long)'n' << 48 | (long)'f' << 40 | (long)'i' << 32 | (long)'n' << 24,
(long)'i' << 56 | (long)'n' << 48 | (long)'t' << 40,
(long)'i' << 56 | (long)'o' << 48 | (long)'t' << 40 | (long)'a' << 32,
(long)'i' << 56 | (long)'q' << 48 | (long)'u' << 40 | (long)'e' << 32 | (long)'s' << 24 | (long)'t' << 16,
(long)'i' << 56 | (long)'s' << 48 | (long)'i' << 40 | (long)'n' << 32,
(long)'i' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'k' << 56 | (long)'a' << 48 | (long)'p' << 40 | (long)'p' << 32 | (long)'a' << 24,
(long)'l' << 56 | (long)'A' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'l' << 56 | (long)'a' << 48 | (long)'m' << 40 | (long)'b' << 32 | (long)'d' << 24 | (long)'a' << 16,
(long)'l' << 56 | (long)'a' << 48 | (long)'n' << 40 | (long)'g' << 32,
(long)'l' << 56 | (long)'a' << 48 | (long)'q' << 40 | (long)'u' << 32 | (long)'o' << 24,
(long)'l' << 56 | (long)'a' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'l' << 56 | (long)'c' << 48 | (long)'e' << 40 | (long)'i' << 32 | (long)'l' << 24,
(long)'l' << 56 | (long)'d' << 48 | (long)'q' << 40 | (long)'u' << 32 | (long)'o' << 24,
(long)'l' << 56 | (long)'e' << 48,
(long)'l' << 56 | (long)'f' << 48 | (long)'l' << 40 | (long)'o' << 32 | (long)'o' << 24 | (long)'r' << 16,
(long)'l' << 56 | (long)'o' << 48 | (long)'w' << 40 | (long)'a' << 32 | (long)'s' << 24 | (long)'t' << 16,
(long)'l' << 56 | (long)'o' << 48 | (long)'z' << 40,
(long)'l' << 56 | (long)'r' << 48 | (long)'m' << 40,
(long)'l' << 56 | (long)'s' << 48 | (long)'a' << 40 | (long)'q' << 32 | (long)'u' << 24 | (long)'o' << 16,
(long)'l' << 56 | (long)'s' << 48 | (long)'q' << 40 | (long)'u' << 32 | (long)'o' << 24,
(long)'l' << 56 | (long)'t' << 48,
(long)'m' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'r' << 32,
(long)'m' << 56 | (long)'d' << 48 | (long)'a' << 40 | (long)'s' << 32 | (long)'h' << 24,
(long)'m' << 56 | (long)'i' << 48 | (long)'c' << 40 | (long)'r' << 32 | (long)'o' << 24,
(long)'m' << 56 | (long)'i' << 48 | (long)'d' << 40 | (long)'d' << 32 | (long)'o' << 24 | (long)'t' << 16,
(long)'m' << 56 | (long)'i' << 48 | (long)'n' << 40 | (long)'u' << 32 | (long)'s' << 24,
(long)'m' << 56 | (long)'u' << 48,
(long)'n' << 56 | (long)'a' << 48 | (long)'b' << 40 | (long)'l' << 32 | (long)'a' << 24,
(long)'n' << 56 | (long)'b' << 48 | (long)'s' << 40 | (long)'p' << 32,
(long)'n' << 56 | (long)'d' << 48 | (long)'a' << 40 | (long)'s' << 32 | (long)'h' << 24,
(long)'n' << 56 | (long)'e' << 48,
(long)'n' << 56 | (long)'i' << 48,
(long)'n' << 56 | (long)'o' << 48 | (long)'t' << 40,
(long)'n' << 56 | (long)'o' << 48 | (long)'t' << 40 | (long)'i' << 32 | (long)'n' << 24,
(long)'n' << 56 | (long)'s' << 48 | (long)'u' << 40 | (long)'b' << 32,
(long)'n' << 56 | (long)'t' << 48 | (long)'i' << 40 | (long)'l' << 32 | (long)'d' << 24 | (long)'e' << 16,
(long)'n' << 56 | (long)'u' << 48,
(long)'o' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'o' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'o' << 56 | (long)'e' << 48 | (long)'l' << 40 | (long)'i' << 32 | (long)'g' << 24,
(long)'o' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'o' << 56 | (long)'l' << 48 | (long)'i' << 40 | (long)'n' << 32 | (long)'e' << 24,
(long)'o' << 56 | (long)'m' << 48 | (long)'e' << 40 | (long)'g' << 32 | (long)'a' << 24,
(long)'o' << 56 | (long)'m' << 48 | (long)'i' << 40 | (long)'c' << 32 | (long)'r' << 24 | (long)'o' << 16 | (long)'n' << 8,
(long)'o' << 56 | (long)'p' << 48 | (long)'l' << 40 | (long)'u' << 32 | (long)'s' << 24,
(long)'o' << 56 | (long)'r' << 48,
(long)'o' << 56 | (long)'r' << 48 | (long)'d' << 40 | (long)'f' << 32,
(long)'o' << 56 | (long)'r' << 48 | (long)'d' << 40 | (long)'m' << 32,
(long)'o' << 56 | (long)'s' << 48 | (long)'l' << 40 | (long)'a' << 32 | (long)'s' << 24 | (long)'h' << 16,
(long)'o' << 56 | (long)'t' << 48 | (long)'i' << 40 | (long)'l' << 32 | (long)'d' << 24 | (long)'e' << 16,
(long)'o' << 56 | (long)'t' << 48 | (long)'i' << 40 | (long)'m' << 32 | (long)'e' << 24 | (long)'s' << 16,
(long)'o' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'p' << 56 | (long)'a' << 48 | (long)'r' << 40 | (long)'a' << 32,
(long)'p' << 56 | (long)'a' << 48 | (long)'r' << 40 | (long)'t' << 32,
(long)'p' << 56 | (long)'e' << 48 | (long)'r' << 40 | (long)'m' << 32 | (long)'i' << 24 | (long)'l' << 16,
(long)'p' << 56 | (long)'e' << 48 | (long)'r' << 40 | (long)'p' << 32,
(long)'p' << 56 | (long)'h' << 48 | (long)'i' << 40,
(long)'p' << 56 | (long)'i' << 48,
(long)'p' << 56 | (long)'i' << 48 | (long)'v' << 40,
(long)'p' << 56 | (long)'l' << 48 | (long)'u' << 40 | (long)'s' << 32 | (long)'m' << 24 | (long)'n' << 16,
(long)'p' << 56 | (long)'o' << 48 | (long)'u' << 40 | (long)'n' << 32 | (long)'d' << 24,
(long)'p' << 56 | (long)'r' << 48 | (long)'i' << 40 | (long)'m' << 32 | (long)'e' << 24,
(long)'p' << 56 | (long)'r' << 48 | (long)'o' << 40 | (long)'d' << 32,
(long)'p' << 56 | (long)'r' << 48 | (long)'o' << 40 | (long)'p' << 32,
(long)'p' << 56 | (long)'s' << 48 | (long)'i' << 40,
(long)'q' << 56 | (long)'u' << 48 | (long)'o' << 40 | (long)'t' << 32,
(long)'r' << 56 | (long)'A' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'r' << 56 | (long)'a' << 48 | (long)'d' << 40 | (long)'i' << 32 | (long)'c' << 24,
(long)'r' << 56 | (long)'a' << 48 | (long)'n' << 40 | (long)'g' << 32,
(long)'r' << 56 | (long)'a' << 48 | (long)'q' << 40 | (long)'u' << 32 | (long)'o' << 24,
(long)'r' << 56 | (long)'a' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'r' << 56 | (long)'c' << 48 | (long)'e' << 40 | (long)'i' << 32 | (long)'l' << 24,
(long)'r' << 56 | (long)'d' << 48 | (long)'q' << 40 | (long)'u' << 32 | (long)'o' << 24,
(long)'r' << 56 | (long)'e' << 48 | (long)'a' << 40 | (long)'l' << 32,
(long)'r' << 56 | (long)'e' << 48 | (long)'g' << 40,
(long)'r' << 56 | (long)'f' << 48 | (long)'l' << 40 | (long)'o' << 32 | (long)'o' << 24 | (long)'r' << 16,
(long)'r' << 56 | (long)'h' << 48 | (long)'o' << 40,
(long)'r' << 56 | (long)'l' << 48 | (long)'m' << 40,
(long)'r' << 56 | (long)'s' << 48 | (long)'a' << 40 | (long)'q' << 32 | (long)'u' << 24 | (long)'o' << 16,
(long)'r' << 56 | (long)'s' << 48 | (long)'q' << 40 | (long)'u' << 32 | (long)'o' << 24,
(long)'s' << 56 | (long)'b' << 48 | (long)'q' << 40 | (long)'u' << 32 | (long)'o' << 24,
(long)'s' << 56 | (long)'c' << 48 | (long)'a' << 40 | (long)'r' << 32 | (long)'o' << 24 | (long)'n' << 16,
(long)'s' << 56 | (long)'d' << 48 | (long)'o' << 40 | (long)'t' << 32,
(long)'s' << 56 | (long)'e' << 48 | (long)'c' << 40 | (long)'t' << 32,
(long)'s' << 56 | (long)'h' << 48 | (long)'y' << 40,
(long)'s' << 56 | (long)'i' << 48 | (long)'g' << 40 | (long)'m' << 32 | (long)'a' << 24,
(long)'s' << 56 | (long)'i' << 48 | (long)'g' << 40 | (long)'m' << 32 | (long)'a' << 24 | (long)'f' << 16,
(long)'s' << 56 | (long)'i' << 48 | (long)'m' << 40,
(long)'s' << 56 | (long)'p' << 48 | (long)'a' << 40 | (long)'d' << 32 | (long)'e' << 24 | (long)'s' << 16,
(long)'s' << 56 | (long)'u' << 48 | (long)'b' << 40,
(long)'s' << 56 | (long)'u' << 48 | (long)'b' << 40 | (long)'e' << 32,
(long)'s' << 56 | (long)'u' << 48 | (long)'m' << 40,
(long)'s' << 56 | (long)'u' << 48 | (long)'p' << 40,
(long)'s' << 56 | (long)'u' << 48 | (long)'p' << 40 | (long)'1' << 32,
(long)'s' << 56 | (long)'u' << 48 | (long)'p' << 40 | (long)'2' << 32,
(long)'s' << 56 | (long)'u' << 48 | (long)'p' << 40 | (long)'3' << 32,
(long)'s' << 56 | (long)'u' << 48 | (long)'p' << 40 | (long)'e' << 32,
(long)'s' << 56 | (long)'z' << 48 | (long)'l' << 40 | (long)'i' << 32 | (long)'g' << 24,
(long)'t' << 56 | (long)'a' << 48 | (long)'u' << 40,
(long)'t' << 56 | (long)'h' << 48 | (long)'e' << 40 | (long)'r' << 32 | (long)'e' << 24 | (long)'4' << 16,
(long)'t' << 56 | (long)'h' << 48 | (long)'e' << 40 | (long)'t' << 32 | (long)'a' << 24,
(long)'t' << 56 | (long)'h' << 48 | (long)'e' << 40 | (long)'t' << 32 | (long)'a' << 24 | (long)'s' << 16 | (long)'y' << 8 | (long)'m' << 0,
(long)'t' << 56 | (long)'h' << 48 | (long)'i' << 40 | (long)'n' << 32 | (long)'s' << 24 | (long)'p' << 16,
(long)'t' << 56 | (long)'h' << 48 | (long)'o' << 40 | (long)'r' << 32 | (long)'n' << 24,
(long)'t' << 56 | (long)'i' << 48 | (long)'l' << 40 | (long)'d' << 32 | (long)'e' << 24,
(long)'t' << 56 | (long)'i' << 48 | (long)'m' << 40 | (long)'e' << 32 | (long)'s' << 24,
(long)'t' << 56 | (long)'r' << 48 | (long)'a' << 40 | (long)'d' << 32 | (long)'e' << 24,
(long)'u' << 56 | (long)'A' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'u' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'u' << 56 | (long)'a' << 48 | (long)'r' << 40 | (long)'r' << 32,
(long)'u' << 56 | (long)'c' << 48 | (long)'i' << 40 | (long)'r' << 32 | (long)'c' << 24,
(long)'u' << 56 | (long)'g' << 48 | (long)'r' << 40 | (long)'a' << 32 | (long)'v' << 24 | (long)'e' << 16,
(long)'u' << 56 | (long)'m' << 48 | (long)'l' << 40,
(long)'u' << 56 | (long)'p' << 48 | (long)'s' << 40 | (long)'i' << 32 | (long)'h' << 24,
(long)'u' << 56 | (long)'p' << 48 | (long)'s' << 40 | (long)'i' << 32 | (long)'l' << 24 | (long)'o' << 16 | (long)'n' << 8,
(long)'u' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'w' << 56 | (long)'e' << 48 | (long)'i' << 40 | (long)'e' << 32 | (long)'r' << 24 | (long)'p' << 16,
(long)'x' << 56 | (long)'i' << 48,
(long)'y' << 56 | (long)'a' << 48 | (long)'c' << 40 | (long)'u' << 32 | (long)'t' << 24 | (long)'e' << 16,
(long)'y' << 56 | (long)'e' << 48 | (long)'n' << 40,
(long)'y' << 56 | (long)'u' << 48 | (long)'m' << 40 | (long)'l' << 32,
(long)'z' << 56 | (long)'e' << 48 | (long)'t' << 40 | (long)'a' << 32,
(long)'z' << 56 | (long)'w' << 48 | (long)'j' << 40,
(long)'z' << 56 | (long)'w' << 48 | (long)'n' << 40 | (long)'j' << 32
};
static readonly char[] entities_values = new char[] {
'\u00C6',
'\u00C1',
'\u00C2',
'\u00C0',
'\u0391',
'\u00C5',
'\u00C3',
'\u00C4',
'\u0392',
'\u00C7',
'\u03A7',
'\u2021',
'\u0394',
'\u00D0',
'\u00C9',
'\u00CA',
'\u00C8',
'\u0395',
'\u0397',
'\u00CB',
'\u0393',
'\u00CD',
'\u00CE',
'\u00CC',
'\u0399',
'\u00CF',
'\u039A',
'\u039B',
'\u039C',
'\u00D1',
'\u039D',
'\u0152',
'\u00D3',
'\u00D4',
'\u00D2',
'\u03A9',
'\u039F',
'\u00D8',
'\u00D5',
'\u00D6',
'\u03A6',
'\u03A0',
'\u2033',
'\u03A8',
'\u03A1',
'\u0160',
'\u03A3',
'\u00DE',
'\u03A4',
'\u0398',
'\u00DA',
'\u00DB',
'\u00D9',
'\u03A5',
'\u00DC',
'\u039E',
'\u00DD',
'\u0178',
'\u0396',
'\u00E1',
'\u00E2',
'\u00B4',
'\u00E6',
'\u00E0',
'\u2135',
'\u03B1',
'\u0026',
'\u2227',
'\u2220',
'\u0027',
'\u00E5',
'\u2248',
'\u00E3',
'\u00E4',
'\u201E',
'\u03B2',
'\u00A6',
'\u2022',
'\u2229',
'\u00E7',
'\u00B8',
'\u00A2',
'\u03C7',
'\u02C6',
'\u2663',
'\u2245',
'\u00A9',
'\u21B5',
'\u222A',
'\u00A4',
'\u21D3',
'\u2020',
'\u2193',
'\u00B0',
'\u03B4',
'\u2666',
'\u00F7',
'\u00E9',
'\u00EA',
'\u00E8',
'\u2205',
'\u2003',
'\u2002',
'\u03B5',
'\u2261',
'\u03B7',
'\u00F0',
'\u00EB',
'\u20AC',
'\u2203',
'\u0192',
'\u2200',
'\u00BD',
'\u00BC',
'\u00BE',
'\u2044',
'\u03B3',
'\u2265',
'\u003E',
'\u21D4',
'\u2194',
'\u2665',
'\u2026',
'\u00ED',
'\u00EE',
'\u00A1',
'\u00EC',
'\u2111',
'\u221E',
'\u222B',
'\u03B9',
'\u00BF',
'\u2208',
'\u00EF',
'\u03BA',
'\u21D0',
'\u03BB',
'\u2329',
'\u00AB',
'\u2190',
'\u2308',
'\u201C',
'\u2264',
'\u230A',
'\u2217',
'\u25CA',
'\u200E',
'\u2039',
'\u2018',
'\u003C',
'\u00AF',
'\u2014',
'\u00B5',
'\u00B7',
'\u2212',
'\u03BC',
'\u2207',
'\u00A0',
'\u2013',
'\u2260',
'\u220B',
'\u00AC',
'\u2209',
'\u2284',
'\u00F1',
'\u03BD',
'\u00F3',
'\u00F4',
'\u0153',
'\u00F2',
'\u203E',
'\u03C9',
'\u03BF',
'\u2295',
'\u2228',
'\u00AA',
'\u00BA',
'\u00F8',
'\u00F5',
'\u2297',
'\u00F6',
'\u00B6',
'\u2202',
'\u2030',
'\u22A5',
'\u03C6',
'\u03C0',
'\u03D6',
'\u00B1',
'\u00A3',
'\u2032',
'\u220F',
'\u221D',
'\u03C8',
'\u0022',
'\u21D2',
'\u221A',
'\u232A',
'\u00BB',
'\u2192',
'\u2309',
'\u201D',
'\u211C',
'\u00AE',
'\u230B',
'\u03C1',
'\u200F',
'\u203A',
'\u2019',
'\u201A',
'\u0161',
'\u22C5',
'\u00A7',
'\u00AD',
'\u03C3',
'\u03C2',
'\u223C',
'\u2660',
'\u2282',
'\u2286',
'\u2211',
'\u2283',
'\u00B9',
'\u00B2',
'\u00B3',
'\u2287',
'\u00DF',
'\u03C4',
'\u2234',
'\u03B8',
'\u03D1',
'\u2009',
'\u00FE',
'\u02DC',
'\u00D7',
'\u2122',
'\u21D1',
'\u00FA',
'\u2191',
'\u00FB',
'\u00F9',
'\u00A8',
'\u03D2',
'\u03C5',
'\u00FC',
'\u2118',
'\u03BE',
'\u00FD',
'\u00A5',
'\u00FF',
'\u03B6',
'\u200D',
'\u200C'
};
static readonly char[] hexChars = new [] {
'0',
'1',
'2',
'3',
'4',
'5',
'6',
'7',
'8',
'9',
'A',
'B',
'C',
'D',
'E',
'F'
};
#region Methods
public static void HtmlAttributeEncode (string s, TextWriter output)
{
output.Write(HtmlAttributeEncode(s));
}
public static string HtmlAttributeEncode (string s)
{
if (null == s)
return null;
bool needEncode = false;
for (int i = 0; i < s.Length; i++) {
if (s [i] == '&' || s [i] == '"' || s [i] == '<') {
needEncode = true;
break;
}
}
if (!needEncode)
return s;
StringBuilder output = new StringBuilder ();
int len = s.Length;
for (int i = 0; i < len; i++)
switch (s [i]) {
case '&' :
output.Append ("&amp;");
break;
case '"' :
output.Append ("&quot;");
break;
case '<':
output.Append ("&lt;");
break;
default:
output.Append (s [i]);
break;
}
return output.ToString();
}
public static string UrlDecode (string str)
{
return UrlDecode(str, Encoding.UTF8);
}
static char [] GetChars (MemoryStream b, Encoding e)
{
return e.GetChars (b.GetBuffer (), 0, (int) b.Length);
}
static void WriteCharBytes (IList buf, char ch, Encoding e)
{
if (ch > 255) {
foreach (byte b in e.GetBytes (new char[] { ch }))
buf.Add (b);
} else
buf.Add ((byte)ch);
}
public static string UrlDecode (string s, Encoding e)
{
if (null == s)
return null;
if (s.IndexOf ('%') == -1 && s.IndexOf ('+') == -1)
return s;
if (e == null)
e = Encoding.UTF8;
long len = s.Length;
var bytes = new List <byte> ();
int xchar;
char ch;
for (int i = 0; i < len; i++) {
ch = s [i];
if (ch == '%' && i + 2 < len && s [i + 1] != '%') {
if (s [i + 1] == 'u' && i + 5 < len) {
// unicode hex sequence
xchar = GetChar (s, i + 2, 4);
if (xchar != -1) {
WriteCharBytes (bytes, (char)xchar, e);
i += 5;
} else
WriteCharBytes (bytes, '%', e);
} else if ((xchar = GetChar (s, i + 1, 2)) != -1) {
WriteCharBytes (bytes, (char)xchar, e);
i += 2;
} else {
WriteCharBytes (bytes, '%', e);
}
continue;
}
if (ch == '+')
WriteCharBytes (bytes, ' ', e);
else
WriteCharBytes (bytes, ch, e);
}
byte[] buf = bytes.ToArray ();
bytes = null;
return e.GetString (buf);
}
public static string UrlDecode (byte [] bytes, Encoding e)
{
if (bytes == null)
return null;
return UrlDecode (bytes, 0, bytes.Length, e);
}
static int GetInt (byte b)
{
char c = (char) b;
if (c >= '0' && c <= '9')
return c - '0';
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
return -1;
}
static int GetChar (byte [] bytes, int offset, int length)
{
int value = 0;
int end = length + offset;
for (int i = offset; i < end; i++) {
int current = GetInt (bytes [i]);
if (current == -1)
return -1;
value = (value << 4) + current;
}
return value;
}
static int GetChar (string str, int offset, int length)
{
int val = 0;
int end = length + offset;
for (int i = offset; i < end; i++) {
char c = str [i];
if (c > 127)
return -1;
int current = GetInt ((byte) c);
if (current == -1)
return -1;
val = (val << 4) + current;
}
return val;
}
public static string UrlDecode (byte [] bytes, int offset, int count, Encoding e)
{
if (bytes == null)
return null;
if (count == 0)
return String.Empty;
if (bytes == null)
throw new ArgumentNullException ("bytes");
if (offset < 0 || offset > bytes.Length)
throw new ArgumentOutOfRangeException ("offset");
if (count < 0 || offset + count > bytes.Length)
throw new ArgumentOutOfRangeException ("count");
StringBuilder output = new StringBuilder ();
MemoryStream acc = new MemoryStream ();
int end = count + offset;
int xchar;
for (int i = offset; i < end; i++) {
if (bytes [i] == '%' && i + 2 < count && bytes [i + 1] != '%') {
if (bytes [i + 1] == (byte) 'u' && i + 5 < end) {
if (acc.Length > 0) {
output.Append (GetChars (acc, e));
acc.SetLength (0);
}
xchar = GetChar (bytes, i + 2, 4);
if (xchar != -1) {
output.Append ((char) xchar);
i += 5;
continue;
}
} else if ((xchar = GetChar (bytes, i + 1, 2)) != -1) {
acc.WriteByte ((byte) xchar);
i += 2;
continue;
}
}
if (acc.Length > 0) {
output.Append (GetChars (acc, e));
acc.SetLength (0);
}
if (bytes [i] == '+') {
output.Append (' ');
} else {
output.Append ((char) bytes [i]);
}
}
if (acc.Length > 0) {
output.Append (GetChars (acc, e));
}
acc = null;
return output.ToString ();
}
public static byte [] UrlDecodeToBytes (byte [] bytes)
{
if (bytes == null)
return null;
return UrlDecodeToBytes (bytes, 0, bytes.Length);
}
public static byte [] UrlDecodeToBytes (string str)
{
return UrlDecodeToBytes (str, Encoding.UTF8);
}
public static byte [] UrlDecodeToBytes (string str, Encoding e)
{
if (str == null)
return null;
if (e == null)
throw new ArgumentNullException ("e");
return UrlDecodeToBytes (e.GetBytes (str));
}
public static byte [] UrlDecodeToBytes (byte [] bytes, int offset, int count)
{
if (bytes == null)
return null;
if (count == 0)
return new byte [0];
int len = bytes.Length;
if (offset < 0 || offset >= len)
throw new ArgumentOutOfRangeException("offset");
if (count < 0 || offset > len - count)
throw new ArgumentOutOfRangeException("count");
MemoryStream result = new MemoryStream ();
int end = offset + count;
for (int i = offset; i < end; i++){
char c = (char) bytes [i];
if (c == '+') {
c = ' ';
} else if (c == '%' && i < end - 2) {
int xchar = GetChar (bytes, i + 1, 2);
if (xchar != -1) {
c = (char) xchar;
i += 2;
}
}
result.WriteByte ((byte) c);
}
return result.ToArray ();
}
public static string UrlEncode(string str)
{
return UrlEncode(str, Encoding.UTF8);
}
public static string UrlEncode (string s, Encoding Enc)
{
if (string.IsNullOrEmpty (s))
return s;
bool needEncode = false;
int len = s.Length;
for (int i = 0; i < len; i++) {
char c = s [i];
if ((c < '0') || (c < 'A' && c > '9') || (c > 'Z' && c < 'a') || (c > 'z')) {
if (NotEncoded (c))
continue;
needEncode = true;
break;
}
}
if (!needEncode)
return s;
// avoided GetByteCount call
byte [] bytes = new byte[Enc.GetMaxByteCount(s.Length)];
int realLen = Enc.GetBytes (s, 0, s.Length, bytes, 0);
return Encoding.ASCII.GetString (UrlEncodeToBytes (bytes, 0, realLen));
}
public static string UrlEncode (byte [] bytes)
{
if (bytes == null)
return null;
if (bytes.Length == 0)
return "";
return Encoding.ASCII.GetString (UrlEncodeToBytes (bytes, 0, bytes.Length));
}
public static string UrlEncode (byte [] bytes, int offset, int count)
{
if (bytes == null)
return null;
if (bytes.Length == 0)
return "";
return Encoding.ASCII.GetString (UrlEncodeToBytes (bytes, offset, count));
}
public static byte [] UrlEncodeToBytes (string str)
{
return UrlEncodeToBytes (str, Encoding.UTF8);
}
public static byte [] UrlEncodeToBytes (string str, Encoding e)
{
if (str == null)
return null;
if (str == "")
return new byte [0];
byte [] bytes = e.GetBytes (str);
return UrlEncodeToBytes (bytes, 0, bytes.Length);
}
public static byte [] UrlEncodeToBytes (byte [] bytes)
{
if (bytes == null)
return null;
if (bytes.Length == 0)
return new byte [0];
return UrlEncodeToBytes (bytes, 0, bytes.Length);
}
static bool NotEncoded (char c)
{
return (c == '!' || c == '(' || c == ')' || c == '*' || c == '-' || c == '.' || c == '_');
}
static void UrlEncodeChar (char c, Stream result, bool isUnicode) {
if (c > 255) {
//FIXME: what happens when there is an internal error?
//if (!isUnicode)
// throw new ArgumentOutOfRangeException ("c", c, "c must be less than 256");
int idx;
int i = (int) c;
result.WriteByte ((byte)'%');
result.WriteByte ((byte)'u');
idx = i >> 12;
result.WriteByte ((byte)hexChars [idx]);
idx = (i >> 8) & 0x0F;
result.WriteByte ((byte)hexChars [idx]);
idx = (i >> 4) & 0x0F;
result.WriteByte ((byte)hexChars [idx]);
idx = i & 0x0F;
result.WriteByte ((byte)hexChars [idx]);
return;
}
if (c > ' ' && NotEncoded (c)) {
result.WriteByte ((byte)c);
return;
}
if (c==' ') {
result.WriteByte ((byte)'+');
return;
}
if ( (c < '0') ||
(c < 'A' && c > '9') ||
(c > 'Z' && c < 'a') ||
(c > 'z')) {
if (isUnicode && c > 127) {
result.WriteByte ((byte)'%');
result.WriteByte ((byte)'u');
result.WriteByte ((byte)'0');
result.WriteByte ((byte)'0');
}
else
result.WriteByte ((byte)'%');
int idx = ((int) c) >> 4;
result.WriteByte ((byte)hexChars [idx]);
idx = ((int) c) & 0x0F;
result.WriteByte ((byte)hexChars [idx]);
}
else
result.WriteByte ((byte)c);
}
public static byte [] UrlEncodeToBytes (byte [] bytes, int offset, int count)
{
if (bytes == null)
return null;
int len = bytes.Length;
if (len == 0)
return new byte [0];
if (offset < 0 || offset >= len)
throw new ArgumentOutOfRangeException("offset");
if (count < 0 || count > len - offset)
throw new ArgumentOutOfRangeException("count");
MemoryStream result = new MemoryStream (count);
int end = offset + count;
for (int i = offset; i < end; i++)
UrlEncodeChar ((char)bytes [i], result, false);
return result.ToArray();
}
public static string UrlEncodeUnicode (string str)
{
if (str == null)
return null;
return Encoding.ASCII.GetString (UrlEncodeUnicodeToBytes (str));
}
public static byte [] UrlEncodeUnicodeToBytes (string str)
{
if (str == null)
return null;
if (str == "")
return new byte [0];
MemoryStream result = new MemoryStream (str.Length);
foreach (char c in str){
UrlEncodeChar (c, result, true);
}
return result.ToArray ();
}
static bool TryConvertKeyToEntity (string key, out char value)
{
var token = CalculateKeyValue (key);
if (token == 0) {
value = '\0';
return false;
}
var idx = Array.BinarySearch (entities, token);
if (idx < 0) {
value = '\0';
return false;
}
value = entities_values [idx];
return true;
}
static long CalculateKeyValue (string s)
{
if (s.Length > 8)
return 0;
long key = 0;
for (int i = 0; i < s.Length; ++i) {
long ch = s[i];
if (ch > 'z' || ch < '0')
return 0;
key |= ch << ((7 - i) * 8);
}
return key;
}
/// <summary>
/// Decodes an HTML-encoded string and returns the decoded string.
/// </summary>
/// <param name="s">The HTML string to decode. </param>
/// <returns>The decoded text.</returns>
public static string HtmlDecode (string s)
{
if (s == null)
throw new ArgumentNullException ("s");
if (s.IndexOf ('&') == -1)
return s;
StringBuilder entity = new StringBuilder ();
StringBuilder output = new StringBuilder ();
int len = s.Length;
// 0 -> nothing,
// 1 -> right after '&'
// 2 -> between '&' and ';' but no '#'
// 3 -> '#' found after '&' and getting numbers
int state = 0;
int number = 0;
int digit_start = 0;
bool hex_number = false;
for (int i = 0; i < len; i++) {
char c = s [i];
if (state == 0) {
if (c == '&') {
entity.Append (c);
state = 1;
} else {
output.Append (c);
}
continue;
}
if (c == '&') {
state = 1;
if (digit_start > 0) {
entity.Append (s, digit_start, i - digit_start);
digit_start = 0;
}
output.Append (entity.ToString ());
entity.Length = 0;
entity.Append ('&');
continue;
}
switch (state) {
case 1:
if (c == ';') {
state = 0;
output.Append (entity.ToString ());
output.Append (c);
entity.Length = 0;
break;
}
number = 0;
hex_number = false;
if (c != '#') {
state = 2;
} else {
state = 3;
}
entity.Append (c);
break;
case 2:
entity.Append (c);
if (c == ';') {
string key = entity.ToString ();
state = 0;
entity.Length = 0;
if (key.Length > 1) {
var skey = key.Substring (1, key.Length - 2);
if (TryConvertKeyToEntity (skey, out c)) {
output.Append (c);
break;
}
}
output.Append (key);
}
break;
case 3:
if (c == ';') {
if (number < 0x10000) {
output.Append ((char)number);
} else {
output.Append ((char)(0xd800 + ((number - 0x10000) >> 10)));
output.Append ((char)(0xdc00 + ((number - 0x10000) & 0x3ff)));
}
state = 0;
entity.Length = 0;
digit_start = 0;
break;
}
if (c == 'x' || c == 'X' && !hex_number) {
digit_start = i;
hex_number = true;
break;
}
if (Char.IsDigit (c)) {
if (digit_start == 0)
digit_start = i;
number = number * (hex_number ? 16 : 10) + ((int)c - '0');
break;
}
if (hex_number) {
if (c >= 'a' && c <= 'f') {
number = number * 16 + 10 + ((int)c - 'a');
break;
}
if (c >= 'A' && c <= 'F') {
number = number * 16 + 10 + ((int)c - 'A');
break;
}
}
state = 2;
if (digit_start > 0) {
entity.Append (s, digit_start, i - digit_start);
digit_start = 0;
}
entity.Append (c);
break;
}
}
if (entity.Length > 0) {
output.Append (entity);
} else if (digit_start > 0) {
output.Append (s, digit_start, s.Length - digit_start);
}
return output.ToString ();
}
/// <summary>
/// Decodes an HTML-encoded string and sends the resulting output to a TextWriter output stream.
/// </summary>
/// <param name="s">The HTML string to decode</param>
/// <param name="output">The TextWriter output stream containing the decoded string. </param>
public static void HtmlDecode(string s, TextWriter output)
{
if (s != null)
output.Write (HtmlDecode (s));
}
/// <summary>
/// HTML-encodes a string and returns the encoded string.
/// </summary>
/// <param name="s">The text string to encode. </param>
/// <returns>The HTML-encoded text.</returns>
public static string HtmlEncode (string s)
{
if (s == null)
return null;
bool needEncode = false;
int i;
for (i = 0; i < s.Length; i++) {
char c = s [i];
switch (c) {
case '&':
case '"':
case '<':
case '>':
case '\'':
needEncode = true;
break;
default:
if (c > 159) {
needEncode = true;
break;
}
continue;
}
break;
}
if (!needEncode)
return s;
StringBuilder output = new StringBuilder (s, 0, i, s.Length * 2);
for (; i < s.Length; i++) {
var c = s [i];
switch (c) {
case '&' :
output.Append ("&amp;");
break;
case '>' :
output.Append ("&gt;");
break;
case '<' :
output.Append ("&lt;");
break;
case '"' :
output.Append ("&quot;");
break;
case '\'':
output.Append ("&#39;");
break;
default:
// MS starts encoding with &# from 160 and stops at 255.
// We don't do that. One reason is the 65308/65310 unicode
// characters that look like '<' and '>'.
if (c > 159) {
output.Append ("&#");
if (char.IsSurrogate (c))
output.Append (char.ConvertToUtf32 (s, i++));
else
output.Append (((int) c).ToString (CultureInfo.InvariantCulture));
output.Append (";");
} else {
output.Append (c);
}
break;
}
}
return output.ToString ();
}
/// <summary>
/// HTML-encodes a string and sends the resulting output to a TextWriter output stream.
/// </summary>
/// <param name="s">The string to encode. </param>
/// <param name="output">The TextWriter output stream containing the encoded string. </param>
public static void HtmlEncode(string s, TextWriter output)
{
if (s != null)
output.Write (HtmlEncode (s));
}
public static string UrlPathEncode (string s)
{
if (s == null || s.Length == 0)
return s;
MemoryStream result = new MemoryStream ();
int length = s.Length;
for (int i = 0; i < length; i++) {
UrlPathEncodeChar (s [i], result);
}
return Encoding.ASCII.GetString (result.ToArray ());
}
static void UrlPathEncodeChar (char c, Stream result)
{
if (c < 33 || c > 126) {
byte [] bIn = Encoding.UTF8.GetBytes (c.ToString ());
for (int i = 0; i < bIn.Length; i++) {
result.WriteByte ((byte) '%');
int idx = ((int) bIn [i]) >> 4;
result.WriteByte ((byte) hexChars [idx]);
idx = ((int) bIn [i]) & 0x0F;
result.WriteByte ((byte) hexChars [idx]);
}
}
else if (c == ' ') {
result.WriteByte ((byte) '%');
result.WriteByte ((byte) '2');
result.WriteByte ((byte) '0');
}
else
result.WriteByte ((byte) c);
}
public static NameValueCollection ParseQueryString (string query)
{
return ParseQueryString (query, Encoding.UTF8);
}
public static NameValueCollection ParseQueryString (string query, Encoding encoding)
{
if (query == null)
throw new ArgumentNullException ("query");
if (encoding == null)
throw new ArgumentNullException ("encoding");
if (query.Length == 0 || (query.Length == 1 && query[0] == '?'))
return new NameValueCollection ();
if (query[0] == '?')
query = query.Substring (1);
NameValueCollection result = new HttpQSCollection ();
ParseQueryString (query, encoding, result);
return result;
}
internal static void ParseQueryString (string query, Encoding encoding, NameValueCollection result)
{
if (query.Length == 0)
return;
string decoded = HtmlDecode (query);
int decodedLength = decoded.Length;
int namePos = 0;
bool first = true;
while (namePos <= decodedLength) {
int valuePos = -1, valueEnd = -1;
for (int q = namePos; q < decodedLength; q++) {
if (valuePos == -1 && decoded [q] == '=') {
valuePos = q + 1;
} else if (decoded [q] == '&') {
valueEnd = q;
break;
}
}
if (first) {
first = false;
if (decoded [namePos] == '?')
namePos++;
}
string name, value;
if (valuePos == -1) {
name = null;
valuePos = namePos;
} else {
name = UrlDecode (decoded.Substring (namePos, valuePos - namePos - 1), encoding);
}
if (valueEnd < 0) {
namePos = -1;
valueEnd = decoded.Length;
} else {
namePos = valueEnd + 1;
}
value = UrlDecode (decoded.Substring (valuePos, valueEnd - valuePos), encoding);
result.Add (name, value);
if (namePos == -1)
break;
}
}
#endregion // Methods
}
}
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