root / trunk / hammock / src / net40 / Hammock / Mono / HttpUtility.cs @ 0eea575a
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// |
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// System.Web.HttpUtility |
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// |
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// Authors: |
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// Patrik Torstensson (Patrik.Torstensson@labs2.com) |
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// Wictor Wil?n (decode/encode functions) (wictor@ibizkit.se) |
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// Tim Coleman (tim@timcoleman.com) |
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// Gonzalo Paniagua Javier (gonzalo@ximian.com) |
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// |
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// Copyright (C) 2005 Novell, Inc (http://www.novell.com) |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining |
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// a copy of this software and associated documentation files (the |
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// "Software"), to deal in the Software without restriction, including |
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// without limitation the rights to use, copy, modify, merge, publish, |
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// distribute, sublicense, and/or sell copies of the Software, and to |
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// permit persons to whom the Software is furnished to do so, subject to |
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// the following conditions: |
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// |
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// The above copyright notice and this permission notice shall be |
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// included in all copies or substantial portions of the Software. |
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// |
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
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// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
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// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
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// |
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|
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using System.Collections; |
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using System.Collections.Specialized; |
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using System.Globalization; |
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using System.IO; |
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using System.Text; |
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|
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namespace System.Compat.Web |
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{
|
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public sealed class HttpUtility |
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{
|
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#region Fields |
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|
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private static Hashtable entities; |
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private static readonly object lock_ = new object(); |
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|
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#endregion // Fields |
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|
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private static Hashtable Entities |
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{
|
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get |
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{
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lock (lock_) |
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{
|
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if (entities == null) |
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{
|
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InitEntities(); |
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} |
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|
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return entities; |
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} |
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} |
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} |
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|
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#region Constructors |
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|
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private static void InitEntities() |
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{
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// Build the hash table of HTML entity references. This list comes |
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// from the HTML 4.01 W3C recommendation. |
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entities = new Hashtable |
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{
|
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{"nbsp", '\u00A0'},
|
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{"iexcl", '\u00A1'},
|
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{"cent", '\u00A2'},
|
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{"pound", '\u00A3'},
|
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{"curren", '\u00A4'},
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{"yen", '\u00A5'},
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{"brvbar", '\u00A6'},
|
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{"sect", '\u00A7'},
|
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{"uml", '\u00A8'},
|
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{"copy", '\u00A9'},
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{"ordf", '\u00AA'},
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{"laquo", '\u00AB'},
|
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{"not", '\u00AC'},
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{"shy", '\u00AD'},
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{"reg", '\u00AE'},
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{"macr", '\u00AF'},
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{"deg", '\u00B0'},
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{"plusmn", '\u00B1'},
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{"sup2", '\u00B2'},
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{"sup3", '\u00B3'},
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{"acute", '\u00B4'},
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{"micro", '\u00B5'},
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{"para", '\u00B6'},
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{"middot", '\u00B7'},
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{"cedil", '\u00B8'},
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{"sup1", '\u00B9'},
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{"ordm", '\u00BA'},
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{"raquo", '\u00BB'},
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{"frac14", '\u00BC'},
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{"frac12", '\u00BD'},
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{"frac34", '\u00BE'},
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{"iquest", '\u00BF'},
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{"Agrave", '\u00C0'},
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{"Aacute", '\u00C1'},
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{"Acirc", '\u00C2'},
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{"Atilde", '\u00C3'},
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{"Auml", '\u00C4'},
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{"Aring", '\u00C5'},
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{"AElig", '\u00C6'},
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{"Ccedil", '\u00C7'},
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{"Egrave", '\u00C8'},
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{"Eacute", '\u00C9'},
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{"Ecirc", '\u00CA'},
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{"Euml", '\u00CB'},
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{"Igrave", '\u00CC'},
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{"Iacute", '\u00CD'},
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{"Icirc", '\u00CE'},
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{"Iuml", '\u00CF'},
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{"ETH", '\u00D0'},
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{"Ntilde", '\u00D1'},
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{"Ograve", '\u00D2'},
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{"Oacute", '\u00D3'},
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{"Ocirc", '\u00D4'},
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{"Otilde", '\u00D5'},
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{"Ouml", '\u00D6'},
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{"times", '\u00D7'},
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{"Oslash", '\u00D8'},
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{"Ugrave", '\u00D9'},
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{"Uacute", '\u00DA'},
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{"Ucirc", '\u00DB'},
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{"Uuml", '\u00DC'},
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{"Yacute", '\u00DD'},
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{"THORN", '\u00DE'},
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{"szlig", '\u00DF'},
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{"agrave", '\u00E0'},
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{"aacute", '\u00E1'},
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{"acirc", '\u00E2'},
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{"atilde", '\u00E3'},
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{"auml", '\u00E4'},
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{"aring", '\u00E5'},
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{"aelig", '\u00E6'},
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{"ccedil", '\u00E7'},
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{"egrave", '\u00E8'},
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{"eacute", '\u00E9'},
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{"ecirc", '\u00EA'},
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{"euml", '\u00EB'},
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{"igrave", '\u00EC'},
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{"iacute", '\u00ED'},
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{"icirc", '\u00EE'},
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{"iuml", '\u00EF'},
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{"eth", '\u00F0'},
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{"ntilde", '\u00F1'},
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{"ograve", '\u00F2'},
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{"oacute", '\u00F3'},
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{"ocirc", '\u00F4'},
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{"otilde", '\u00F5'},
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{"ouml", '\u00F6'},
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{"divide", '\u00F7'},
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{"oslash", '\u00F8'},
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{"ugrave", '\u00F9'},
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{"uacute", '\u00FA'},
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{"ucirc", '\u00FB'},
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{"uuml", '\u00FC'},
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{"yacute", '\u00FD'},
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{"thorn", '\u00FE'},
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{"yuml", '\u00FF'},
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{"fnof", '\u0192'},
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{"Alpha", '\u0391'},
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{"Beta", '\u0392'},
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{"Gamma", '\u0393'},
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{"Delta", '\u0394'},
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{"Epsilon", '\u0395'},
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{"Zeta", '\u0396'},
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{"Eta", '\u0397'},
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{"Theta", '\u0398'},
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{"Iota", '\u0399'},
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{"Kappa", '\u039A'},
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{"Lambda", '\u039B'},
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{"Mu", '\u039C'},
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{"Nu", '\u039D'},
|
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{"Xi", '\u039E'},
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{"Omicron", '\u039F'},
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{"Pi", '\u03A0'},
|
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{"Rho", '\u03A1'},
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{"Sigma", '\u03A3'},
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{"Tau", '\u03A4'},
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{"Upsilon", '\u03A5'},
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{"Phi", '\u03A6'},
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{"Chi", '\u03A7'},
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{"Psi", '\u03A8'},
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{"Omega", '\u03A9'},
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{"alpha", '\u03B1'},
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{"beta", '\u03B2'},
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{"gamma", '\u03B3'},
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{"delta", '\u03B4'},
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{"epsilon", '\u03B5'},
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{"zeta", '\u03B6'},
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{"eta", '\u03B7'},
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{"theta", '\u03B8'},
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{"iota", '\u03B9'},
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{"kappa", '\u03BA'},
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{"lambda", '\u03BB'},
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{"mu", '\u03BC'},
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{"nu", '\u03BD'},
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{"xi", '\u03BE'},
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{"omicron", '\u03BF'},
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{"pi", '\u03C0'},
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{"rho", '\u03C1'},
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{"sigmaf", '\u03C2'},
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{"sigma", '\u03C3'},
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{"tau", '\u03C4'},
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{"upsilon", '\u03C5'},
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{"phi", '\u03C6'},
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{"chi", '\u03C7'},
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{"psi", '\u03C8'},
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{"omega", '\u03C9'},
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{"thetasym", '\u03D1'},
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{"upsih", '\u03D2'},
|
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{"piv", '\u03D6'},
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{"bull", '\u2022'},
|
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{"hellip", '\u2026'},
|
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{"prime", '\u2032'},
|
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{"Prime", '\u2033'},
|
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{"oline", '\u203E'},
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{"frasl", '\u2044'},
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{"weierp", '\u2118'},
|
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{"image", '\u2111'},
|
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{"real", '\u211C'},
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{"trade", '\u2122'},
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{"alefsym", '\u2135'},
|
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{"larr", '\u2190'},
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{"uarr", '\u2191'},
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{"rarr", '\u2192'},
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{"darr", '\u2193'},
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{"harr", '\u2194'},
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{"crarr", '\u21B5'},
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{"lArr", '\u21D0'},
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{"uArr", '\u21D1'},
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{"rArr", '\u21D2'},
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{"dArr", '\u21D3'},
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{"hArr", '\u21D4'},
|
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{"forall", '\u2200'},
|
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{"part", '\u2202'},
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{"exist", '\u2203'},
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{"empty", '\u2205'},
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{"nabla", '\u2207'},
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{"isin", '\u2208'},
|
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{"notin", '\u2209'},
|
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{"ni", '\u220B'},
|
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{"prod", '\u220F'},
|
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{"sum", '\u2211'},
|
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{"minus", '\u2212'},
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{"lowast", '\u2217'},
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{"radic", '\u221A'},
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{"prop", '\u221D'},
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{"infin", '\u221E'},
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{"ang", '\u2220'},
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{"and", '\u2227'},
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{"or", '\u2228'},
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{"cap", '\u2229'},
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{"cup", '\u222A'},
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{"int", '\u222B'},
|
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{"there4", '\u2234'},
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{"sim", '\u223C'},
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{"cong", '\u2245'},
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{"asymp", '\u2248'},
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{"ne", '\u2260'},
|
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{"equiv", '\u2261'},
|
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{"le", '\u2264'},
|
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{"ge", '\u2265'},
|
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{"sub", '\u2282'},
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{"sup", '\u2283'},
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{"nsub", '\u2284'},
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{"sube", '\u2286'},
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{"supe", '\u2287'},
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{"oplus", '\u2295'},
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{"otimes", '\u2297'},
|
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{"perp", '\u22A5'},
|
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{"sdot", '\u22C5'},
|
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{"lceil", '\u2308'},
|
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{"rceil", '\u2309'},
|
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{"lfloor", '\u230A'},
|
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{"rfloor", '\u230B'},
|
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{"lang", '\u2329'},
|
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{"rang", '\u232A'},
|
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{"loz", '\u25CA'},
|
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{"spades", '\u2660'},
|
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{"clubs", '\u2663'},
|
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{"hearts", '\u2665'},
|
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{"diams", '\u2666'},
|
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{"quot", '\u0022'},
|
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{"amp", '\u0026'},
|
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{"lt", '\u003C'},
|
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{"gt", '\u003E'},
|
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{"OElig", '\u0152'},
|
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{"oelig", '\u0153'},
|
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{"Scaron", '\u0160'},
|
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{"scaron", '\u0161'},
|
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{"Yuml", '\u0178'},
|
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{"circ", '\u02C6'},
|
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{"tilde", '\u02DC'},
|
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{"ensp", '\u2002'},
|
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{"emsp", '\u2003'},
|
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{"thinsp", '\u2009'},
|
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{"zwnj", '\u200C'},
|
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{"zwj", '\u200D'},
|
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{"lrm", '\u200E'},
|
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{"rlm", '\u200F'},
|
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{"ndash", '\u2013'},
|
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{"mdash", '\u2014'},
|
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{"lsquo", '\u2018'},
|
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{"rsquo", '\u2019'},
|
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{"sbquo", '\u201A'},
|
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{"ldquo", '\u201C'},
|
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{"rdquo", '\u201D'},
|
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{"bdquo", '\u201E'},
|
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{"dagger", '\u2020'},
|
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{"Dagger", '\u2021'},
|
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{"permil", '\u2030'},
|
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{"lsaquo", '\u2039'},
|
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{"rsaquo", '\u203A'},
|
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{"euro", '\u20AC'}
|
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}; |
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} |
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|
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#endregion // Constructors |
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|
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#region Methods |
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|
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private static readonly char[] hexChars = "0123456789abcdef".ToCharArray(); |
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|
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public static void HtmlAttributeEncode(string s, TextWriter output) |
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{
|
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output.Write(HtmlAttributeEncode(s)); |
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} |
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|
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public static string HtmlAttributeEncode(string s) |
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{
|
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if (null == s) |
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{
|
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return null; |
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} |
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|
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var needEncode = false; |
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for (var i = 0; i < s.Length; i++) |
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{
|
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if (s[i] == '&' || s[i] == '"' || s[i] == '<') |
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{
|
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needEncode = true; |
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break; |
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} |
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} |
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|
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if (!needEncode) |
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{
|
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return s; |
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} |
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|
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var output = new StringBuilder(); |
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var len = s.Length; |
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for (var i = 0; i < len; i++) |
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{
|
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switch (s[i]) |
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{
|
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case '&': |
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output.Append("&");
|
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break; |
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case '"': |
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output.Append(""");
|
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break; |
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case '<': |
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output.Append("<");
|
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break; |
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default: |
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output.Append(s[i]); |
| 379 |
break; |
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} |
| 381 |
} |
| 382 |
|
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return output.ToString(); |
| 384 |
} |
| 385 |
|
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public static string UrlDecode(string str) |
| 387 |
{
|
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return UrlDecode(str, Encoding.UTF8); |
| 389 |
} |
| 390 |
|
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private static char[] GetChars(MemoryStream b, Encoding e) |
| 392 |
{
|
| 393 |
return e.GetChars(b.GetBuffer(), 0, (int) b.Length); |
| 394 |
} |
| 395 |
|
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public static string UrlDecode(string s, Encoding e) |
| 397 |
{
|
| 398 |
if (null == s) |
| 399 |
{
|
| 400 |
return null; |
| 401 |
} |
| 402 |
|
| 403 |
if (s.IndexOf('%') == -1 && s.IndexOf('+') == -1)
|
| 404 |
{
|
| 405 |
return s; |
| 406 |
} |
| 407 |
|
| 408 |
if (e == null) |
| 409 |
{
|
| 410 |
e = Encoding.UTF8; |
| 411 |
} |
| 412 |
|
| 413 |
var output = new StringBuilder(); |
| 414 |
long len = s.Length; |
| 415 |
var bytes = new MemoryStream(); |
| 416 |
|
| 417 |
for (var i = 0; i < len; i++) |
| 418 |
{
|
| 419 |
if (s[i] == '%' && i + 2 < len && s[i + 1] != '%') |
| 420 |
{
|
| 421 |
int xchar; |
| 422 |
if (s[i + 1] == 'u' && i + 5 < len) |
| 423 |
{
|
| 424 |
if (bytes.Length > 0) |
| 425 |
{
|
| 426 |
output.Append(GetChars(bytes, e)); |
| 427 |
bytes.SetLength(0); |
| 428 |
} |
| 429 |
|
| 430 |
xchar = GetChar(s, i + 2, 4); |
| 431 |
if (xchar != -1) |
| 432 |
{
|
| 433 |
output.Append((char) xchar); |
| 434 |
i += 5; |
| 435 |
} |
| 436 |
else |
| 437 |
{
|
| 438 |
output.Append('%');
|
| 439 |
} |
| 440 |
} |
| 441 |
else if ((xchar = GetChar(s, i + 1, 2)) != -1) |
| 442 |
{
|
| 443 |
bytes.WriteByte((byte) xchar); |
| 444 |
i += 2; |
| 445 |
} |
| 446 |
else |
| 447 |
{
|
| 448 |
output.Append('%');
|
| 449 |
} |
| 450 |
continue; |
| 451 |
} |
| 452 |
|
| 453 |
if (bytes.Length > 0) |
| 454 |
{
|
| 455 |
output.Append(GetChars(bytes, e)); |
| 456 |
bytes.SetLength(0); |
| 457 |
} |
| 458 |
|
| 459 |
if (s[i] == '+') |
| 460 |
{
|
| 461 |
output.Append(' ');
|
| 462 |
} |
| 463 |
else |
| 464 |
{
|
| 465 |
output.Append(s[i]); |
| 466 |
} |
| 467 |
} |
| 468 |
|
| 469 |
if (bytes.Length > 0) |
| 470 |
{
|
| 471 |
output.Append(GetChars(bytes, e)); |
| 472 |
} |
| 473 |
|
| 474 |
return output.ToString(); |
| 475 |
} |
| 476 |
|
| 477 |
public static string UrlDecode(byte[] bytes, Encoding e) |
| 478 |
{
|
| 479 |
return bytes == null ? null : UrlDecode(bytes, 0, bytes.Length, e); |
| 480 |
} |
| 481 |
|
| 482 |
private static int GetInt(byte b) |
| 483 |
{
|
| 484 |
var c = (char) b; |
| 485 |
if (c >= '0' && c <= '9') |
| 486 |
{
|
| 487 |
return c - '0'; |
| 488 |
} |
| 489 |
|
| 490 |
if (c >= 'a' && c <= 'f') |
| 491 |
{
|
| 492 |
return c - 'a' + 10; |
| 493 |
} |
| 494 |
|
| 495 |
if (c >= 'A' && c <= 'F') |
| 496 |
{
|
| 497 |
return c - 'A' + 10; |
| 498 |
} |
| 499 |
|
| 500 |
return -1; |
| 501 |
} |
| 502 |
|
| 503 |
private static int GetChar(byte[] bytes, int offset, int length) |
| 504 |
{
|
| 505 |
var value = 0; |
| 506 |
var end = length + offset; |
| 507 |
for (var i = offset; i < end; i++) |
| 508 |
{
|
| 509 |
var current = GetInt(bytes[i]); |
| 510 |
if (current == -1) |
| 511 |
{
|
| 512 |
return -1; |
| 513 |
} |
| 514 |
value = (value << 4) + current; |
| 515 |
} |
| 516 |
|
| 517 |
return value; |
| 518 |
} |
| 519 |
|
| 520 |
private static int GetChar(string str, int offset, int length) |
| 521 |
{
|
| 522 |
var val = 0; |
| 523 |
var end = length + offset; |
| 524 |
for (var i = offset; i < end; i++) |
| 525 |
{
|
| 526 |
var c = str[i]; |
| 527 |
if (c > 127) |
| 528 |
{
|
| 529 |
return -1; |
| 530 |
} |
| 531 |
|
| 532 |
var current = GetInt((byte) c); |
| 533 |
if (current == -1) |
| 534 |
{
|
| 535 |
return -1; |
| 536 |
} |
| 537 |
val = (val << 4) + current; |
| 538 |
} |
| 539 |
|
| 540 |
return val; |
| 541 |
} |
| 542 |
|
| 543 |
public static string UrlDecode(byte[] bytes, int offset, int count, Encoding e) |
| 544 |
{
|
| 545 |
if (bytes == null) |
| 546 |
{
|
| 547 |
return null; |
| 548 |
} |
| 549 |
if (count == 0) |
| 550 |
{
|
| 551 |
return String.Empty; |
| 552 |
} |
| 553 |
|
| 554 |
if (bytes == null) |
| 555 |
{
|
| 556 |
throw new ArgumentNullException("bytes");
|
| 557 |
} |
| 558 |
|
| 559 |
if (offset < 0 || offset > bytes.Length) |
| 560 |
{
|
| 561 |
throw new ArgumentOutOfRangeException("offset");
|
| 562 |
} |
| 563 |
|
| 564 |
if (count < 0 || offset + count > bytes.Length) |
| 565 |
{
|
| 566 |
throw new ArgumentOutOfRangeException("count");
|
| 567 |
} |
| 568 |
|
| 569 |
var output = new StringBuilder(); |
| 570 |
var acc = new MemoryStream(); |
| 571 |
|
| 572 |
var end = count + offset; |
| 573 |
for (var i = offset; i < end; i++) |
| 574 |
{
|
| 575 |
if (bytes[i] == '%' && i + 2 < count && bytes[i + 1] != '%') |
| 576 |
{
|
| 577 |
int xchar; |
| 578 |
if (bytes[i + 1] == (byte) 'u' && i + 5 < end) |
| 579 |
{
|
| 580 |
if (acc.Length > 0) |
| 581 |
{
|
| 582 |
output.Append(GetChars(acc, e)); |
| 583 |
acc.SetLength(0); |
| 584 |
} |
| 585 |
xchar = GetChar(bytes, i + 2, 4); |
| 586 |
if (xchar != -1) |
| 587 |
{
|
| 588 |
output.Append((char) xchar); |
| 589 |
i += 5; |
| 590 |
continue; |
| 591 |
} |
| 592 |
} |
| 593 |
else if ((xchar = GetChar(bytes, i + 1, 2)) != -1) |
| 594 |
{
|
| 595 |
acc.WriteByte((byte) xchar); |
| 596 |
i += 2; |
| 597 |
continue; |
| 598 |
} |
| 599 |
} |
| 600 |
|
| 601 |
if (acc.Length > 0) |
| 602 |
{
|
| 603 |
output.Append(GetChars(acc, e)); |
| 604 |
acc.SetLength(0); |
| 605 |
} |
| 606 |
|
| 607 |
if (bytes[i] == '+') |
| 608 |
{
|
| 609 |
output.Append(' ');
|
| 610 |
} |
| 611 |
else |
| 612 |
{
|
| 613 |
output.Append((char) bytes[i]); |
| 614 |
} |
| 615 |
} |
| 616 |
|
| 617 |
if (acc.Length > 0) |
| 618 |
{
|
| 619 |
output.Append(GetChars(acc, e)); |
| 620 |
} |
| 621 |
|
| 622 |
return output.ToString(); |
| 623 |
} |
| 624 |
|
| 625 |
public static byte[] UrlDecodeToBytes(byte[] bytes) |
| 626 |
{
|
| 627 |
return bytes == null ? null : UrlDecodeToBytes(bytes, 0, bytes.Length); |
| 628 |
} |
| 629 |
|
| 630 |
public static byte[] UrlDecodeToBytes(string str) |
| 631 |
{
|
| 632 |
return UrlDecodeToBytes(str, Encoding.UTF8); |
| 633 |
} |
| 634 |
|
| 635 |
public static byte[] UrlDecodeToBytes(string str, Encoding e) |
| 636 |
{
|
| 637 |
if (str == null) |
| 638 |
{
|
| 639 |
return null; |
| 640 |
} |
| 641 |
|
| 642 |
if (e == null) |
| 643 |
{
|
| 644 |
throw new ArgumentNullException("e");
|
| 645 |
} |
| 646 |
|
| 647 |
return UrlDecodeToBytes(e.GetBytes(str)); |
| 648 |
} |
| 649 |
|
| 650 |
public static byte[] UrlDecodeToBytes(byte[] bytes, int offset, int count) |
| 651 |
{
|
| 652 |
if (bytes == null) |
| 653 |
{
|
| 654 |
return null; |
| 655 |
} |
| 656 |
if (count == 0) |
| 657 |
{
|
| 658 |
return new byte[0]; |
| 659 |
} |
| 660 |
|
| 661 |
var len = bytes.Length; |
| 662 |
if (offset < 0 || offset >= len) |
| 663 |
{
|
| 664 |
throw new ArgumentOutOfRangeException("offset");
|
| 665 |
} |
| 666 |
|
| 667 |
if (count < 0 || offset > len - count) |
| 668 |
{
|
| 669 |
throw new ArgumentOutOfRangeException("count");
|
| 670 |
} |
| 671 |
|
| 672 |
var result = new MemoryStream(); |
| 673 |
var end = offset + count; |
| 674 |
for (var i = offset; i < end; i++) |
| 675 |
{
|
| 676 |
var c = (char) bytes[i]; |
| 677 |
if (c == '+') |
| 678 |
{
|
| 679 |
c = ' '; |
| 680 |
} |
| 681 |
else if (c == '%' && i < end - 2) |
| 682 |
{
|
| 683 |
var xchar = GetChar(bytes, i + 1, 2); |
| 684 |
if (xchar != -1) |
| 685 |
{
|
| 686 |
c = (char) xchar; |
| 687 |
i += 2; |
| 688 |
} |
| 689 |
} |
| 690 |
result.WriteByte((byte) c); |
| 691 |
} |
| 692 |
|
| 693 |
return result.ToArray(); |
| 694 |
} |
| 695 |
|
| 696 |
public static string UrlEncode(string str) |
| 697 |
{
|
| 698 |
return UrlEncode(str, Encoding.UTF8); |
| 699 |
} |
| 700 |
|
| 701 |
public static string UrlEncode(string s, Encoding Enc) |
| 702 |
{
|
| 703 |
if (s == null) |
| 704 |
{
|
| 705 |
return null; |
| 706 |
} |
| 707 |
|
| 708 |
if (s == "") |
| 709 |
{
|
| 710 |
return ""; |
| 711 |
} |
| 712 |
|
| 713 |
var needEncode = false; |
| 714 |
var len = s.Length; |
| 715 |
for (var i = 0; i < len; i++) |
| 716 |
{
|
| 717 |
var c = s[i]; |
| 718 |
if ((c < '0') || (c < 'A' && c > '9') || (c > 'Z' && c < 'a') || (c > 'z')) |
| 719 |
{
|
| 720 |
if (NotEncoded(c)) |
| 721 |
{
|
| 722 |
continue; |
| 723 |
} |
| 724 |
|
| 725 |
needEncode = true; |
| 726 |
break; |
| 727 |
} |
| 728 |
} |
| 729 |
|
| 730 |
if (!needEncode) |
| 731 |
{
|
| 732 |
return s; |
| 733 |
} |
| 734 |
|
| 735 |
// avoided GetByteCount call |
| 736 |
var bytes = new byte[Enc.GetMaxByteCount(s.Length)]; |
| 737 |
var realLen = Enc.GetBytes(s, 0, s.Length, bytes, 0); |
| 738 |
return Encoding.ASCII.GetString(UrlEncodeToBytes(bytes, 0, realLen), 0, realLen); |
| 739 |
} |
| 740 |
|
| 741 |
public static string UrlEncode(byte[] bytes) |
| 742 |
{
|
| 743 |
if (bytes == null) |
| 744 |
{
|
| 745 |
return null; |
| 746 |
} |
| 747 |
|
| 748 |
if (bytes.Length == 0) |
| 749 |
{
|
| 750 |
return ""; |
| 751 |
} |
| 752 |
|
| 753 |
return Encoding.ASCII.GetString(UrlEncodeToBytes(bytes, 0, bytes.Length), 0, bytes.Length); |
| 754 |
} |
| 755 |
|
| 756 |
public static string UrlEncode(byte[] bytes, int offset, int count) |
| 757 |
{
|
| 758 |
if (bytes == null) |
| 759 |
{
|
| 760 |
return null; |
| 761 |
} |
| 762 |
|
| 763 |
if (bytes.Length == 0) |
| 764 |
{
|
| 765 |
return ""; |
| 766 |
} |
| 767 |
|
| 768 |
return Encoding.ASCII.GetString(UrlEncodeToBytes(bytes, offset, count), offset, count); |
| 769 |
} |
| 770 |
|
| 771 |
public static byte[] UrlEncodeToBytes(string str) |
| 772 |
{
|
| 773 |
return UrlEncodeToBytes(str, Encoding.UTF8); |
| 774 |
} |
| 775 |
|
| 776 |
public static byte[] UrlEncodeToBytes(string str, Encoding e) |
| 777 |
{
|
| 778 |
if (str == null) |
| 779 |
{
|
| 780 |
return null; |
| 781 |
} |
| 782 |
|
| 783 |
if (str == "") |
| 784 |
{
|
| 785 |
return new byte[0]; |
| 786 |
} |
| 787 |
|
| 788 |
var bytes = e.GetBytes(str); |
| 789 |
return UrlEncodeToBytes(bytes, 0, bytes.Length); |
| 790 |
} |
| 791 |
|
| 792 |
public static byte[] UrlEncodeToBytes(byte[] bytes) |
| 793 |
{
|
| 794 |
if (bytes == null) |
| 795 |
{
|
| 796 |
return null; |
| 797 |
} |
| 798 |
|
| 799 |
if (bytes.Length == 0) |
| 800 |
{
|
| 801 |
return new byte[0]; |
| 802 |
} |
| 803 |
|
| 804 |
return UrlEncodeToBytes(bytes, 0, bytes.Length); |
| 805 |
} |
| 806 |
|
| 807 |
private static bool NotEncoded(char c) |
| 808 |
{
|
| 809 |
return (c == '!' || c == '\'' || c == '(' || c == ')' || c == '*' || c == '-' || c == '.' || c == '_');
|
| 810 |
} |
| 811 |
|
| 812 |
private static void UrlEncodeChar(char c, Stream result, bool isUnicode) |
| 813 |
{
|
| 814 |
if (c > 255) |
| 815 |
{
|
| 816 |
//FIXME: what happens when there is an internal error? |
| 817 |
//if (!isUnicode) |
| 818 |
// throw new ArgumentOutOfRangeException ("c", c, "c must be less than 256");
|
| 819 |
int i = c; |
| 820 |
|
| 821 |
result.WriteByte((byte) '%'); |
| 822 |
result.WriteByte((byte) 'u'); |
| 823 |
var idx = i >> 12; |
| 824 |
result.WriteByte((byte) hexChars[idx]); |
| 825 |
idx = (i >> 8) & 0x0F; |
| 826 |
result.WriteByte((byte) hexChars[idx]); |
| 827 |
idx = (i >> 4) & 0x0F; |
| 828 |
result.WriteByte((byte) hexChars[idx]); |
| 829 |
idx = i & 0x0F; |
| 830 |
result.WriteByte((byte) hexChars[idx]); |
| 831 |
return; |
| 832 |
} |
| 833 |
|
| 834 |
if (c > ' ' && NotEncoded(c)) |
| 835 |
{
|
| 836 |
result.WriteByte((byte) c); |
| 837 |
return; |
| 838 |
} |
| 839 |
if (c == ' ') |
| 840 |
{
|
| 841 |
result.WriteByte((byte) '+'); |
| 842 |
return; |
| 843 |
} |
| 844 |
if ((c < '0') || |
| 845 |
(c < 'A' && c > '9') || |
| 846 |
(c > 'Z' && c < 'a') || |
| 847 |
(c > 'z')) |
| 848 |
{
|
| 849 |
if (isUnicode && c > 127) |
| 850 |
{
|
| 851 |
result.WriteByte((byte) '%'); |
| 852 |
result.WriteByte((byte) 'u'); |
| 853 |
result.WriteByte((byte) '0'); |
| 854 |
result.WriteByte((byte) '0'); |
| 855 |
} |
| 856 |
else |
| 857 |
{
|
| 858 |
result.WriteByte((byte) '%'); |
| 859 |
} |
| 860 |
|
| 861 |
var idx = (c) >> 4; |
| 862 |
result.WriteByte((byte) hexChars[idx]); |
| 863 |
idx = (c) & 0x0F; |
| 864 |
result.WriteByte((byte) hexChars[idx]); |
| 865 |
} |
| 866 |
else |
| 867 |
{
|
| 868 |
result.WriteByte((byte) c); |
| 869 |
} |
| 870 |
} |
| 871 |
|
| 872 |
public static byte[] UrlEncodeToBytes(byte[] bytes, int offset, int count) |
| 873 |
{
|
| 874 |
if (bytes == null) |
| 875 |
{
|
| 876 |
return null; |
| 877 |
} |
| 878 |
|
| 879 |
var len = bytes.Length; |
| 880 |
if (len == 0) |
| 881 |
{
|
| 882 |
return new byte[0]; |
| 883 |
} |
| 884 |
|
| 885 |
if (offset < 0 || offset >= len) |
| 886 |
{
|
| 887 |
throw new ArgumentOutOfRangeException("offset");
|
| 888 |
} |
| 889 |
|
| 890 |
if (count < 0 || count > len - offset) |
| 891 |
{
|
| 892 |
throw new ArgumentOutOfRangeException("count");
|
| 893 |
} |
| 894 |
|
| 895 |
var result = new MemoryStream(count); |
| 896 |
var end = offset + count; |
| 897 |
for (var i = offset; i < end; i++) |
| 898 |
{
|
| 899 |
UrlEncodeChar((char) bytes[i], result, false); |
| 900 |
} |
| 901 |
|
| 902 |
return result.ToArray(); |
| 903 |
} |
| 904 |
|
| 905 |
public static string UrlEncodeUnicode(string str) |
| 906 |
{
|
| 907 |
if (str == null) |
| 908 |
{
|
| 909 |
return null; |
| 910 |
} |
| 911 |
|
| 912 |
var bytes = UrlEncodeUnicodeToBytes(str); |
| 913 |
return Encoding.ASCII.GetString(bytes, 0, bytes.Length); |
| 914 |
} |
| 915 |
|
| 916 |
public static byte[] UrlEncodeUnicodeToBytes(string str) |
| 917 |
{
|
| 918 |
if (str == null) |
| 919 |
{
|
| 920 |
return null; |
| 921 |
} |
| 922 |
|
| 923 |
if (str == "") |
| 924 |
{
|
| 925 |
return new byte[0]; |
| 926 |
} |
| 927 |
|
| 928 |
var result = new MemoryStream(str.Length); |
| 929 |
foreach (var c in str) |
| 930 |
{
|
| 931 |
UrlEncodeChar(c, result, true); |
| 932 |
} |
| 933 |
return result.ToArray(); |
| 934 |
} |
| 935 |
|
| 936 |
/// <summary> |
| 937 |
/// Decodes an HTML-encoded string and returns the decoded string. |
| 938 |
/// </summary> |
| 939 |
/// <param name="s">The HTML string to decode. </param> |
| 940 |
/// <returns>The decoded text.</returns> |
| 941 |
public static string HtmlDecode(string s) |
| 942 |
{
|
| 943 |
if (s == null) |
| 944 |
{
|
| 945 |
throw new ArgumentNullException("s");
|
| 946 |
} |
| 947 |
|
| 948 |
if (s.IndexOf('&') == -1)
|
| 949 |
{
|
| 950 |
return s; |
| 951 |
} |
| 952 |
|
| 953 |
var entity = new StringBuilder(); |
| 954 |
var output = new StringBuilder(); |
| 955 |
var len = s.Length; |
| 956 |
// 0 -> nothing, |
| 957 |
// 1 -> right after '&' |
| 958 |
// 2 -> between '&' and ';' but no '#' |
| 959 |
// 3 -> '#' found after '&' and getting numbers |
| 960 |
var state = 0; |
| 961 |
var number = 0; |
| 962 |
var have_trailing_digits = false; |
| 963 |
|
| 964 |
for (var i = 0; i < len; i++) |
| 965 |
{
|
| 966 |
var c = s[i]; |
| 967 |
if (state == 0) |
| 968 |
{
|
| 969 |
if (c == '&') |
| 970 |
{
|
| 971 |
entity.Append(c); |
| 972 |
state = 1; |
| 973 |
} |
| 974 |
else |
| 975 |
{
|
| 976 |
output.Append(c); |
| 977 |
} |
| 978 |
continue; |
| 979 |
} |
| 980 |
|
| 981 |
if (c == '&') |
| 982 |
{
|
| 983 |
state = 1; |
| 984 |
if (have_trailing_digits) |
| 985 |
{
|
| 986 |
entity.Append(number.ToString(CultureInfo.InvariantCulture)); |
| 987 |
have_trailing_digits = false; |
| 988 |
} |
| 989 |
|
| 990 |
output.Append(entity.ToString()); |
| 991 |
entity.Length = 0; |
| 992 |
entity.Append('&');
|
| 993 |
continue; |
| 994 |
} |
| 995 |
|
| 996 |
if (state == 1) |
| 997 |
{
|
| 998 |
if (c == ';') |
| 999 |
{
|
| 1000 |
state = 0; |
| 1001 |
output.Append(entity.ToString()); |
| 1002 |
output.Append(c); |
| 1003 |
entity.Length = 0; |
| 1004 |
} |
| 1005 |
else |
| 1006 |
{
|
| 1007 |
number = 0; |
| 1008 |
state = c != '#' ? 2 : 3; |
| 1009 |
entity.Append(c); |
| 1010 |
} |
| 1011 |
} |
| 1012 |
else if (state == 2) |
| 1013 |
{
|
| 1014 |
entity.Append(c); |
| 1015 |
if (c == ';') |
| 1016 |
{
|
| 1017 |
var key = entity.ToString(); |
| 1018 |
if (key.Length > 1 && Entities.ContainsKey(key.Substring(1, key.Length - 2))) |
| 1019 |
{
|
| 1020 |
key = Entities[key.Substring(1, key.Length - 2)].ToString(); |
| 1021 |
} |
| 1022 |
|
| 1023 |
output.Append(key); |
| 1024 |
state = 0; |
| 1025 |
entity.Length = 0; |
| 1026 |
} |
| 1027 |
} |
| 1028 |
else if (state == 3) |
| 1029 |
{
|
| 1030 |
if (c == ';') |
| 1031 |
{
|
| 1032 |
if (number > 65535) |
| 1033 |
{
|
| 1034 |
output.Append("&#");
|
| 1035 |
output.Append(number.ToString(CultureInfo.InvariantCulture)); |
| 1036 |
output.Append(";");
|
| 1037 |
} |
| 1038 |
else |
| 1039 |
{
|
| 1040 |
output.Append((char) number); |
| 1041 |
} |
| 1042 |
state = 0; |
| 1043 |
entity.Length = 0; |
| 1044 |
have_trailing_digits = false; |
| 1045 |
} |
| 1046 |
else if (Char.IsDigit(c)) |
| 1047 |
{
|
| 1048 |
number = number*10 + (c - '0'); |
| 1049 |
have_trailing_digits = true; |
| 1050 |
} |
| 1051 |
else |
| 1052 |
{
|
| 1053 |
state = 2; |
| 1054 |
if (have_trailing_digits) |
| 1055 |
{
|
| 1056 |
entity.Append(number.ToString(CultureInfo.InvariantCulture)); |
| 1057 |
have_trailing_digits = false; |
| 1058 |
} |
| 1059 |
entity.Append(c); |
| 1060 |
} |
| 1061 |
} |
| 1062 |
} |
| 1063 |
|
| 1064 |
if (entity.Length > 0) |
| 1065 |
{
|
| 1066 |
output.Append(entity.ToString()); |
| 1067 |
} |
| 1068 |
else if (have_trailing_digits) |
| 1069 |
{
|
| 1070 |
output.Append(number.ToString(CultureInfo.InvariantCulture)); |
| 1071 |
} |
| 1072 |
return output.ToString(); |
| 1073 |
} |
| 1074 |
|
| 1075 |
/// <summary> |
| 1076 |
/// Decodes an HTML-encoded string and sends the resulting output to a TextWriter output stream. |
| 1077 |
/// </summary> |
| 1078 |
/// <param name="s">The HTML string to decode</param> |
| 1079 |
/// <param name="output">The TextWriter output stream containing the decoded string. </param> |
| 1080 |
public static void HtmlDecode(string s, TextWriter output) |
| 1081 |
{
|
| 1082 |
if (s != null) |
| 1083 |
{
|
| 1084 |
output.Write(HtmlDecode(s)); |
| 1085 |
} |
| 1086 |
} |
| 1087 |
|
| 1088 |
/// <summary> |
| 1089 |
/// HTML-encodes a string and returns the encoded string. |
| 1090 |
/// </summary> |
| 1091 |
/// <param name="s">The text string to encode. </param> |
| 1092 |
/// <returns>The HTML-encoded text.</returns> |
| 1093 |
public static string HtmlEncode(string s) |
| 1094 |
{
|
| 1095 |
if (s == null) |
| 1096 |
{
|
| 1097 |
return null; |
| 1098 |
} |
| 1099 |
|
| 1100 |
var needEncode = false; |
| 1101 |
for (var i = 0; i < s.Length; i++) |
| 1102 |
{
|
| 1103 |
var c = s[i]; |
| 1104 |
if (c == '&' || c == '"' || c == '<' || c == '>' || c > 159) |
| 1105 |
{
|
| 1106 |
needEncode = true; |
| 1107 |
break; |
| 1108 |
} |
| 1109 |
} |
| 1110 |
|
| 1111 |
if (!needEncode) |
| 1112 |
{
|
| 1113 |
return s; |
| 1114 |
} |
| 1115 |
|
| 1116 |
var output = new StringBuilder(); |
| 1117 |
|
| 1118 |
var len = s.Length; |
| 1119 |
for (var i = 0; i < len; i++) |
| 1120 |
{
|
| 1121 |
switch (s[i]) |
| 1122 |
{
|
| 1123 |
case '&': |
| 1124 |
output.Append("&");
|
| 1125 |
break; |
| 1126 |
case '>': |
| 1127 |
output.Append(">");
|
| 1128 |
break; |
| 1129 |
case '<': |
| 1130 |
output.Append("<");
|
| 1131 |
break; |
| 1132 |
case '"': |
| 1133 |
output.Append(""");
|
| 1134 |
break; |
| 1135 |
default: |
| 1136 |
// MS starts encoding with &# from 160 and stops at 255. |
| 1137 |
// We don't do that. One reason is the 65308/65310 unicode |
| 1138 |
// characters that look like '<' and '>'. |
| 1139 |
#if TARGET_JVM |
| 1140 |
if (s [i] > 159 && s [i] < 256) {
|
| 1141 |
#else |
| 1142 |
if (s[i] > 159) |
| 1143 |
{
|
| 1144 |
#endif |
| 1145 |
output.Append("&#");
|
| 1146 |
output.Append(((int) s[i]).ToString(CultureInfo.InvariantCulture)); |
| 1147 |
output.Append(";");
|
| 1148 |
} |
| 1149 |
else |
| 1150 |
{
|
| 1151 |
output.Append(s[i]); |
| 1152 |
} |
| 1153 |
break; |
| 1154 |
} |
| 1155 |
} |
| 1156 |
return output.ToString(); |
| 1157 |
} |
| 1158 |
|
| 1159 |
/// <summary> |
| 1160 |
/// HTML-encodes a string and sends the resulting output to a TextWriter output stream. |
| 1161 |
/// </summary> |
| 1162 |
/// <param name="s">The string to encode. </param> |
| 1163 |
/// <param name="output">The TextWriter output stream containing the encoded string. </param> |
| 1164 |
public static void HtmlEncode(string s, TextWriter output) |
| 1165 |
{
|
| 1166 |
if (s != null) |
| 1167 |
{
|
| 1168 |
output.Write(HtmlEncode(s)); |
| 1169 |
} |
| 1170 |
} |
| 1171 |
|
| 1172 |
public static string UrlPathEncode(string s) |
| 1173 |
{
|
| 1174 |
if (string.IsNullOrEmpty(s)) |
| 1175 |
return s; |
| 1176 |
|
| 1177 |
var result = new MemoryStream(); |
| 1178 |
var length = s.Length; |
| 1179 |
for (var i = 0; i < length; i++) |
| 1180 |
{
|
| 1181 |
UrlPathEncodeChar(s[i], result); |
| 1182 |
} |
| 1183 |
|
| 1184 |
var bytes = result.ToArray(); |
| 1185 |
return Encoding.ASCII.GetString(bytes, 0, bytes.Length); |
| 1186 |
} |
| 1187 |
|
| 1188 |
private static void UrlPathEncodeChar(char c, Stream result) |
| 1189 |
{
|
| 1190 |
if (c < 33 || c > 126) |
| 1191 |
{
|
| 1192 |
var bIn = Encoding.UTF8.GetBytes(c.ToString()); |
| 1193 |
for (var i = 0; i < bIn.Length; i++) |
| 1194 |
{
|
| 1195 |
result.WriteByte((byte) '%'); |
| 1196 |
var idx = bIn[i] >> 4; |
| 1197 |
result.WriteByte((byte) hexChars[idx]); |
| 1198 |
idx = bIn[i] & 0x0F; |
| 1199 |
result.WriteByte((byte) hexChars[idx]); |
| 1200 |
} |
| 1201 |
} |
| 1202 |
else if (c == ' ') |
| 1203 |
{
|
| 1204 |
result.WriteByte((byte) '%'); |
| 1205 |
result.WriteByte((byte) '2'); |
| 1206 |
result.WriteByte((byte) '0'); |
| 1207 |
} |
| 1208 |
else |
| 1209 |
result.WriteByte((byte) c); |
| 1210 |
} |
| 1211 |
|
| 1212 |
public static NameValueCollection ParseQueryString(string query) |
| 1213 |
{
|
| 1214 |
return ParseQueryString(query, Encoding.UTF8); |
| 1215 |
} |
| 1216 |
|
| 1217 |
public static NameValueCollection ParseQueryString(string query, Encoding encoding) |
| 1218 |
{
|
| 1219 |
if (query == null) |
| 1220 |
throw new ArgumentNullException("query");
|
| 1221 |
if (encoding == null) |
| 1222 |
throw new ArgumentNullException("encoding");
|
| 1223 |
if (query.Length == 0 || (query.Length == 1 && query[0] == '?')) |
| 1224 |
return new NameValueCollection(); |
| 1225 |
if (query[0] == '?') |
| 1226 |
query = query.Substring(1); |
| 1227 |
|
| 1228 |
var result = new NameValueCollection(); |
| 1229 |
ParseQueryString(query, encoding, result); |
| 1230 |
return result; |
| 1231 |
} |
| 1232 |
|
| 1233 |
internal static void ParseQueryString(string query, Encoding encoding, NameValueCollection result) |
| 1234 |
{
|
| 1235 |
if (query.Length == 0) |
| 1236 |
{
|
| 1237 |
return; |
| 1238 |
} |
| 1239 |
|
| 1240 |
var decoded = HtmlDecode(query); |
| 1241 |
var decodedLength = decoded.Length; |
| 1242 |
var namePos = 0; |
| 1243 |
var first = true; |
| 1244 |
while (namePos <= decodedLength) |
| 1245 |
{
|
| 1246 |
int valuePos = -1, valueEnd = -1; |
| 1247 |
for (var q = namePos; q < decodedLength; q++) |
| 1248 |
{
|
| 1249 |
if (valuePos == -1 && decoded[q] == '=') |
| 1250 |
{
|
| 1251 |
valuePos = q + 1; |
| 1252 |
} |
| 1253 |
else if (decoded[q] == '&') |
| 1254 |
{
|
| 1255 |
valueEnd = q; |
| 1256 |
break; |
| 1257 |
} |
| 1258 |
} |
| 1259 |
|
| 1260 |
if (first) |
| 1261 |
{
|
| 1262 |
first = false; |
| 1263 |
if (decoded[namePos] == '?') |
| 1264 |
{
|
| 1265 |
namePos++; |
| 1266 |
} |
| 1267 |
} |
| 1268 |
|
| 1269 |
string name; |
| 1270 |
if (valuePos == -1) |
| 1271 |
{
|
| 1272 |
name = null; |
| 1273 |
valuePos = namePos; |
| 1274 |
} |
| 1275 |
else |
| 1276 |
{
|
| 1277 |
name = UrlDecode(decoded.Substring(namePos, valuePos - namePos - 1), encoding); |
| 1278 |
} |
| 1279 |
if (valueEnd < 0) |
| 1280 |
{
|
| 1281 |
namePos = -1; |
| 1282 |
valueEnd = decoded.Length; |
| 1283 |
} |
| 1284 |
else |
| 1285 |
{
|
| 1286 |
namePos = valueEnd + 1; |
| 1287 |
} |
| 1288 |
var value = UrlDecode(decoded.Substring(valuePos, valueEnd - valuePos), encoding); |
| 1289 |
|
| 1290 |
result.Add(name, value); |
| 1291 |
if (namePos == -1) |
| 1292 |
{
|
| 1293 |
break; |
| 1294 |
} |
| 1295 |
} |
| 1296 |
} |
| 1297 |
|
| 1298 |
#endregion // Methods |
| 1299 |
} |
| 1300 |
} |