root / trunk / hammock / src / net40 / Hammock.WindowsPhone / Mono / HttpUtility.cs @ 0eea575a
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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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using System.Collections.Generic; |
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|
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#if SILVERLIGHT |
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using Hammock.Silverlight.Compat; |
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#endif |
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|
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namespace System.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 Dictionary<string, string> 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 Dictionary<string, string> 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 Dictionary<string, string> |
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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]); |
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break; |
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} |
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} |
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|
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return output.ToString(); |
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} |
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|
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public static string UrlDecode(string str) |
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{
|
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return UrlDecode(str, Encoding.UTF8); |
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} |
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|
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private static char[] GetChars(MemoryStream b, Encoding e) |
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{
|
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return e.GetChars(b.GetBuffer(), 0, (int) b.Length); |
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} |
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|
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public static string UrlDecode(string s, Encoding e) |
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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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if (s.IndexOf('%') == -1 && s.IndexOf('+') == -1)
|
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{
|
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return s; |
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} |
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|
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if (e == null) |
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{
|
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e = Encoding.UTF8; |
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} |
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|
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var output = new StringBuilder(); |
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long len = s.Length; |
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var bytes = new MemoryStream(); |
| 387 |
|
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for (var i = 0; i < len; i++) |
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{
|
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if (s[i] == '%' && i + 2 < len && s[i + 1] != '%') |
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{
|
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int xchar; |
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if (s[i + 1] == 'u' && i + 5 < len) |
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{
|
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if (bytes.Length > 0) |
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{
|
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output.Append(GetChars(bytes, e)); |
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bytes.SetLength(0); |
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} |
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|
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xchar = GetChar(s, i + 2, 4); |
| 402 |
if (xchar != -1) |
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{
|
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output.Append((char) xchar); |
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i += 5; |
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} |
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else |
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{
|
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output.Append('%');
|
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} |
| 411 |
} |
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else if ((xchar = GetChar(s, i + 1, 2)) != -1) |
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{
|
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bytes.WriteByte((byte) xchar); |
| 415 |
i += 2; |
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} |
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else |
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{
|
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output.Append('%');
|
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} |
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continue; |
| 422 |
} |
| 423 |
|
| 424 |
if (bytes.Length > 0) |
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{
|
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output.Append(GetChars(bytes, e)); |
| 427 |
bytes.SetLength(0); |
| 428 |
} |
| 429 |
|
| 430 |
if (s[i] == '+') |
| 431 |
{
|
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output.Append(' ');
|
| 433 |
} |
| 434 |
else |
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{
|
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output.Append(s[i]); |
| 437 |
} |
| 438 |
} |
| 439 |
|
| 440 |
if (bytes.Length > 0) |
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{
|
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output.Append(GetChars(bytes, e)); |
| 443 |
} |
| 444 |
|
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return output.ToString(); |
| 446 |
} |
| 447 |
|
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public static string UrlDecode(byte[] bytes, Encoding e) |
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{
|
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return bytes == null ? null : UrlDecode(bytes, 0, bytes.Length, e); |
| 451 |
} |
| 452 |
|
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private static int GetInt(byte b) |
| 454 |
{
|
| 455 |
var c = (char) b; |
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if (c >= '0' && c <= '9') |
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{
|
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return c - '0'; |
| 459 |
} |
| 460 |
|
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if (c >= 'a' && c <= 'f') |
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{
|
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return c - 'a' + 10; |
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} |
| 465 |
|
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if (c >= 'A' && c <= 'F') |
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{
|
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return c - 'A' + 10; |
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} |
| 470 |
|
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return -1; |
| 472 |
} |
| 473 |
|
| 474 |
private static int GetChar(byte[] bytes, int offset, int length) |
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{
|
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var value = 0; |
| 477 |
var end = length + offset; |
| 478 |
for (var i = offset; i < end; i++) |
| 479 |
{
|
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var current = GetInt(bytes[i]); |
| 481 |
if (current == -1) |
| 482 |
{
|
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return -1; |
| 484 |
} |
| 485 |
value = (value << 4) + current; |
| 486 |
} |
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|
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return value; |
| 489 |
} |
| 490 |
|
| 491 |
private static int GetChar(string str, int offset, int length) |
| 492 |
{
|
| 493 |
var val = 0; |
| 494 |
var end = length + offset; |
| 495 |
for (var i = offset; i < end; i++) |
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{
|
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var c = str[i]; |
| 498 |
if (c > 127) |
| 499 |
{
|
| 500 |
return -1; |
| 501 |
} |
| 502 |
|
| 503 |
var current = GetInt((byte) c); |
| 504 |
if (current == -1) |
| 505 |
{
|
| 506 |
return -1; |
| 507 |
} |
| 508 |
val = (val << 4) + current; |
| 509 |
} |
| 510 |
|
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return val; |
| 512 |
} |
| 513 |
|
| 514 |
public static string UrlDecode(byte[] bytes, int offset, int count, Encoding e) |
| 515 |
{
|
| 516 |
if (bytes == null) |
| 517 |
{
|
| 518 |
return null; |
| 519 |
} |
| 520 |
if (count == 0) |
| 521 |
{
|
| 522 |
return String.Empty; |
| 523 |
} |
| 524 |
|
| 525 |
if (bytes == null) |
| 526 |
{
|
| 527 |
throw new ArgumentNullException("bytes");
|
| 528 |
} |
| 529 |
|
| 530 |
if (offset < 0 || offset > bytes.Length) |
| 531 |
{
|
| 532 |
throw new ArgumentOutOfRangeException("offset");
|
| 533 |
} |
| 534 |
|
| 535 |
if (count < 0 || offset + count > bytes.Length) |
| 536 |
{
|
| 537 |
throw new ArgumentOutOfRangeException("count");
|
| 538 |
} |
| 539 |
|
| 540 |
var output = new StringBuilder(); |
| 541 |
var acc = new MemoryStream(); |
| 542 |
|
| 543 |
var end = count + offset; |
| 544 |
for (var i = offset; i < end; i++) |
| 545 |
{
|
| 546 |
if (bytes[i] == '%' && i + 2 < count && bytes[i + 1] != '%') |
| 547 |
{
|
| 548 |
int xchar; |
| 549 |
if (bytes[i + 1] == (byte) 'u' && i + 5 < end) |
| 550 |
{
|
| 551 |
if (acc.Length > 0) |
| 552 |
{
|
| 553 |
output.Append(GetChars(acc, e)); |
| 554 |
acc.SetLength(0); |
| 555 |
} |
| 556 |
xchar = GetChar(bytes, i + 2, 4); |
| 557 |
if (xchar != -1) |
| 558 |
{
|
| 559 |
output.Append((char) xchar); |
| 560 |
i += 5; |
| 561 |
continue; |
| 562 |
} |
| 563 |
} |
| 564 |
else if ((xchar = GetChar(bytes, i + 1, 2)) != -1) |
| 565 |
{
|
| 566 |
acc.WriteByte((byte) xchar); |
| 567 |
i += 2; |
| 568 |
continue; |
| 569 |
} |
| 570 |
} |
| 571 |
|
| 572 |
if (acc.Length > 0) |
| 573 |
{
|
| 574 |
output.Append(GetChars(acc, e)); |
| 575 |
acc.SetLength(0); |
| 576 |
} |
| 577 |
|
| 578 |
if (bytes[i] == '+') |
| 579 |
{
|
| 580 |
output.Append(' ');
|
| 581 |
} |
| 582 |
else |
| 583 |
{
|
| 584 |
output.Append((char) bytes[i]); |
| 585 |
} |
| 586 |
} |
| 587 |
|
| 588 |
if (acc.Length > 0) |
| 589 |
{
|
| 590 |
output.Append(GetChars(acc, e)); |
| 591 |
} |
| 592 |
|
| 593 |
return output.ToString(); |
| 594 |
} |
| 595 |
|
| 596 |
public static byte[] UrlDecodeToBytes(byte[] bytes) |
| 597 |
{
|
| 598 |
return bytes == null ? null : UrlDecodeToBytes(bytes, 0, bytes.Length); |
| 599 |
} |
| 600 |
|
| 601 |
public static byte[] UrlDecodeToBytes(string str) |
| 602 |
{
|
| 603 |
return UrlDecodeToBytes(str, Encoding.UTF8); |
| 604 |
} |
| 605 |
|
| 606 |
public static byte[] UrlDecodeToBytes(string str, Encoding e) |
| 607 |
{
|
| 608 |
if (str == null) |
| 609 |
{
|
| 610 |
return null; |
| 611 |
} |
| 612 |
|
| 613 |
if (e == null) |
| 614 |
{
|
| 615 |
throw new ArgumentNullException("e");
|
| 616 |
} |
| 617 |
|
| 618 |
return UrlDecodeToBytes(e.GetBytes(str)); |
| 619 |
} |
| 620 |
|
| 621 |
public static byte[] UrlDecodeToBytes(byte[] bytes, int offset, int count) |
| 622 |
{
|
| 623 |
if (bytes == null) |
| 624 |
{
|
| 625 |
return null; |
| 626 |
} |
| 627 |
if (count == 0) |
| 628 |
{
|
| 629 |
return new byte[0]; |
| 630 |
} |
| 631 |
|
| 632 |
var len = bytes.Length; |
| 633 |
if (offset < 0 || offset >= len) |
| 634 |
{
|
| 635 |
throw new ArgumentOutOfRangeException("offset");
|
| 636 |
} |
| 637 |
|
| 638 |
if (count < 0 || offset > len - count) |
| 639 |
{
|
| 640 |
throw new ArgumentOutOfRangeException("count");
|
| 641 |
} |
| 642 |
|
| 643 |
var result = new MemoryStream(); |
| 644 |
var end = offset + count; |
| 645 |
for (var i = offset; i < end; i++) |
| 646 |
{
|
| 647 |
var c = (char) bytes[i]; |
| 648 |
if (c == '+') |
| 649 |
{
|
| 650 |
c = ' '; |
| 651 |
} |
| 652 |
else if (c == '%' && i < end - 2) |
| 653 |
{
|
| 654 |
var xchar = GetChar(bytes, i + 1, 2); |
| 655 |
if (xchar != -1) |
| 656 |
{
|
| 657 |
c = (char) xchar; |
| 658 |
i += 2; |
| 659 |
} |
| 660 |
} |
| 661 |
result.WriteByte((byte) c); |
| 662 |
} |
| 663 |
|
| 664 |
return result.ToArray(); |
| 665 |
} |
| 666 |
|
| 667 |
public static string UrlEncode(string str) |
| 668 |
{
|
| 669 |
return UrlEncode(str, Encoding.UTF8); |
| 670 |
} |
| 671 |
|
| 672 |
public static string UrlEncode(string s, Encoding Enc) |
| 673 |
{
|
| 674 |
if (s == null) |
| 675 |
{
|
| 676 |
return null; |
| 677 |
} |
| 678 |
|
| 679 |
if (s == "") |
| 680 |
{
|
| 681 |
return ""; |
| 682 |
} |
| 683 |
|
| 684 |
var needEncode = false; |
| 685 |
var len = s.Length; |
| 686 |
for (var i = 0; i < len; i++) |
| 687 |
{
|
| 688 |
var c = s[i]; |
| 689 |
if ((c < '0') || (c < 'A' && c > '9') || (c > 'Z' && c < 'a') || (c > 'z')) |
| 690 |
{
|
| 691 |
if (NotEncoded(c)) |
| 692 |
{
|
| 693 |
continue; |
| 694 |
} |
| 695 |
|
| 696 |
needEncode = true; |
| 697 |
break; |
| 698 |
} |
| 699 |
} |
| 700 |
|
| 701 |
if (!needEncode) |
| 702 |
{
|
| 703 |
return s; |
| 704 |
} |
| 705 |
|
| 706 |
// avoided GetByteCount call |
| 707 |
var bytes = new byte[Enc.GetMaxByteCount(s.Length)]; |
| 708 |
var realLen = Enc.GetBytes(s, 0, s.Length, bytes, 0); |
| 709 |
return Encoding.UTF8.GetString(UrlEncodeToBytes(bytes, 0, realLen), 0, realLen); |
| 710 |
} |
| 711 |
|
| 712 |
public static string UrlEncode(byte[] bytes) |
| 713 |
{
|
| 714 |
if (bytes == null) |
| 715 |
{
|
| 716 |
return null; |
| 717 |
} |
| 718 |
|
| 719 |
if (bytes.Length == 0) |
| 720 |
{
|
| 721 |
return ""; |
| 722 |
} |
| 723 |
|
| 724 |
return Encoding.UTF8.GetString(UrlEncodeToBytes(bytes, 0, bytes.Length), 0, bytes.Length); |
| 725 |
} |
| 726 |
|
| 727 |
public static string UrlEncode(byte[] bytes, int offset, int count) |
| 728 |
{
|
| 729 |
if (bytes == null) |
| 730 |
{
|
| 731 |
return null; |
| 732 |
} |
| 733 |
|
| 734 |
if (bytes.Length == 0) |
| 735 |
{
|
| 736 |
return ""; |
| 737 |
} |
| 738 |
|
| 739 |
return Encoding.UTF8.GetString(UrlEncodeToBytes(bytes, offset, count), offset, count); |
| 740 |
} |
| 741 |
|
| 742 |
public static byte[] UrlEncodeToBytes(string str) |
| 743 |
{
|
| 744 |
return UrlEncodeToBytes(str, Encoding.UTF8); |
| 745 |
} |
| 746 |
|
| 747 |
public static byte[] UrlEncodeToBytes(string str, Encoding e) |
| 748 |
{
|
| 749 |
if (str == null) |
| 750 |
{
|
| 751 |
return null; |
| 752 |
} |
| 753 |
|
| 754 |
if (str == "") |
| 755 |
{
|
| 756 |
return new byte[0]; |
| 757 |
} |
| 758 |
|
| 759 |
var bytes = e.GetBytes(str); |
| 760 |
return UrlEncodeToBytes(bytes, 0, bytes.Length); |
| 761 |
} |
| 762 |
|
| 763 |
public static byte[] UrlEncodeToBytes(byte[] bytes) |
| 764 |
{
|
| 765 |
if (bytes == null) |
| 766 |
{
|
| 767 |
return null; |
| 768 |
} |
| 769 |
|
| 770 |
if (bytes.Length == 0) |
| 771 |
{
|
| 772 |
return new byte[0]; |
| 773 |
} |
| 774 |
|
| 775 |
return UrlEncodeToBytes(bytes, 0, bytes.Length); |
| 776 |
} |
| 777 |
|
| 778 |
private static bool NotEncoded(char c) |
| 779 |
{
|
| 780 |
return (c == '!' || c == '\'' || c == '(' || c == ')' || c == '*' || c == '-' || c == '.' || c == '_');
|
| 781 |
} |
| 782 |
|
| 783 |
private static void UrlEncodeChar(char c, Stream result, bool isUnicode) |
| 784 |
{
|
| 785 |
if (c > 255) |
| 786 |
{
|
| 787 |
//FIXME: what happens when there is an internal error? |
| 788 |
//if (!isUnicode) |
| 789 |
// throw new ArgumentOutOfRangeException ("c", c, "c must be less than 256");
|
| 790 |
int i = c; |
| 791 |
|
| 792 |
result.WriteByte((byte) '%'); |
| 793 |
result.WriteByte((byte) 'u'); |
| 794 |
var idx = i >> 12; |
| 795 |
result.WriteByte((byte) hexChars[idx]); |
| 796 |
idx = (i >> 8) & 0x0F; |
| 797 |
result.WriteByte((byte) hexChars[idx]); |
| 798 |
idx = (i >> 4) & 0x0F; |
| 799 |
result.WriteByte((byte) hexChars[idx]); |
| 800 |
idx = i & 0x0F; |
| 801 |
result.WriteByte((byte) hexChars[idx]); |
| 802 |
return; |
| 803 |
} |
| 804 |
|
| 805 |
if (c > ' ' && NotEncoded(c)) |
| 806 |
{
|
| 807 |
result.WriteByte((byte) c); |
| 808 |
return; |
| 809 |
} |
| 810 |
if (c == ' ') |
| 811 |
{
|
| 812 |
result.WriteByte((byte) '+'); |
| 813 |
return; |
| 814 |
} |
| 815 |
if ((c < '0') || |
| 816 |
(c < 'A' && c > '9') || |
| 817 |
(c > 'Z' && c < 'a') || |
| 818 |
(c > 'z')) |
| 819 |
{
|
| 820 |
if (isUnicode && c > 127) |
| 821 |
{
|
| 822 |
result.WriteByte((byte) '%'); |
| 823 |
result.WriteByte((byte) 'u'); |
| 824 |
result.WriteByte((byte) '0'); |
| 825 |
result.WriteByte((byte) '0'); |
| 826 |
} |
| 827 |
else |
| 828 |
{
|
| 829 |
result.WriteByte((byte) '%'); |
| 830 |
} |
| 831 |
|
| 832 |
var idx = (c) >> 4; |
| 833 |
result.WriteByte((byte) hexChars[idx]); |
| 834 |
idx = (c) & 0x0F; |
| 835 |
result.WriteByte((byte) hexChars[idx]); |
| 836 |
} |
| 837 |
else |
| 838 |
{
|
| 839 |
result.WriteByte((byte) c); |
| 840 |
} |
| 841 |
} |
| 842 |
|
| 843 |
public static byte[] UrlEncodeToBytes(byte[] bytes, int offset, int count) |
| 844 |
{
|
| 845 |
if (bytes == null) |
| 846 |
{
|
| 847 |
return null; |
| 848 |
} |
| 849 |
|
| 850 |
var len = bytes.Length; |
| 851 |
if (len == 0) |
| 852 |
{
|
| 853 |
return new byte[0]; |
| 854 |
} |
| 855 |
|
| 856 |
if (offset < 0 || offset >= len) |
| 857 |
{
|
| 858 |
throw new ArgumentOutOfRangeException("offset");
|
| 859 |
} |
| 860 |
|
| 861 |
if (count < 0 || count > len - offset) |
| 862 |
{
|
| 863 |
throw new ArgumentOutOfRangeException("count");
|
| 864 |
} |
| 865 |
|
| 866 |
var result = new MemoryStream(count); |
| 867 |
var end = offset + count; |
| 868 |
for (var i = offset; i < end; i++) |
| 869 |
{
|
| 870 |
UrlEncodeChar((char) bytes[i], result, false); |
| 871 |
} |
| 872 |
|
| 873 |
return result.ToArray(); |
| 874 |
} |
| 875 |
|
| 876 |
public static string UrlEncodeUnicode(string str) |
| 877 |
{
|
| 878 |
if (str == null) |
| 879 |
{
|
| 880 |
return null; |
| 881 |
} |
| 882 |
|
| 883 |
var bytes = UrlEncodeUnicodeToBytes(str); |
| 884 |
return Encoding.UTF8.GetString(bytes, 0, bytes.Length); |
| 885 |
} |
| 886 |
|
| 887 |
public static byte[] UrlEncodeUnicodeToBytes(string str) |
| 888 |
{
|
| 889 |
if (str == null) |
| 890 |
{
|
| 891 |
return null; |
| 892 |
} |
| 893 |
|
| 894 |
if (str == "") |
| 895 |
{
|
| 896 |
return new byte[0]; |
| 897 |
} |
| 898 |
|
| 899 |
var result = new MemoryStream(str.Length); |
| 900 |
foreach (var c in str) |
| 901 |
{
|
| 902 |
UrlEncodeChar(c, result, true); |
| 903 |
} |
| 904 |
return result.ToArray(); |
| 905 |
} |
| 906 |
|
| 907 |
/// <summary> |
| 908 |
/// Decodes an HTML-encoded string and returns the decoded string. |
| 909 |
/// </summary> |
| 910 |
/// <param name="s">The HTML string to decode. </param> |
| 911 |
/// <returns>The decoded text.</returns> |
| 912 |
public static string HtmlDecode(string s) |
| 913 |
{
|
| 914 |
if (s == null) |
| 915 |
{
|
| 916 |
throw new ArgumentNullException("s");
|
| 917 |
} |
| 918 |
|
| 919 |
if (s.IndexOf('&') == -1)
|
| 920 |
{
|
| 921 |
return s; |
| 922 |
} |
| 923 |
|
| 924 |
var entity = new StringBuilder(); |
| 925 |
var output = new StringBuilder(); |
| 926 |
var len = s.Length; |
| 927 |
// 0 -> nothing, |
| 928 |
// 1 -> right after '&' |
| 929 |
// 2 -> between '&' and ';' but no '#' |
| 930 |
// 3 -> '#' found after '&' and getting numbers |
| 931 |
var state = 0; |
| 932 |
var number = 0; |
| 933 |
var have_trailing_digits = false; |
| 934 |
|
| 935 |
for (var i = 0; i < len; i++) |
| 936 |
{
|
| 937 |
var c = s[i]; |
| 938 |
if (state == 0) |
| 939 |
{
|
| 940 |
if (c == '&') |
| 941 |
{
|
| 942 |
entity.Append(c); |
| 943 |
state = 1; |
| 944 |
} |
| 945 |
else |
| 946 |
{
|
| 947 |
output.Append(c); |
| 948 |
} |
| 949 |
continue; |
| 950 |
} |
| 951 |
|
| 952 |
if (c == '&') |
| 953 |
{
|
| 954 |
state = 1; |
| 955 |
if (have_trailing_digits) |
| 956 |
{
|
| 957 |
entity.Append(number.ToString(CultureInfo.InvariantCulture)); |
| 958 |
have_trailing_digits = false; |
| 959 |
} |
| 960 |
|
| 961 |
output.Append(entity.ToString()); |
| 962 |
entity.Length = 0; |
| 963 |
entity.Append('&');
|
| 964 |
continue; |
| 965 |
} |
| 966 |
|
| 967 |
if (state == 1) |
| 968 |
{
|
| 969 |
if (c == ';') |
| 970 |
{
|
| 971 |
state = 0; |
| 972 |
output.Append(entity.ToString()); |
| 973 |
output.Append(c); |
| 974 |
entity.Length = 0; |
| 975 |
} |
| 976 |
else |
| 977 |
{
|
| 978 |
number = 0; |
| 979 |
state = c != '#' ? 2 : 3; |
| 980 |
entity.Append(c); |
| 981 |
} |
| 982 |
} |
| 983 |
else if (state == 2) |
| 984 |
{
|
| 985 |
entity.Append(c); |
| 986 |
if (c == ';') |
| 987 |
{
|
| 988 |
var key = entity.ToString(); |
| 989 |
if (key.Length > 1 && Entities.ContainsKey(key.Substring(1, key.Length - 2))) |
| 990 |
{
|
| 991 |
key = Entities[key.Substring(1, key.Length - 2)].ToString(); |
| 992 |
} |
| 993 |
|
| 994 |
output.Append(key); |
| 995 |
state = 0; |
| 996 |
entity.Length = 0; |
| 997 |
} |
| 998 |
} |
| 999 |
else if (state == 3) |
| 1000 |
{
|
| 1001 |
if (c == ';') |
| 1002 |
{
|
| 1003 |
if (number > 65535) |
| 1004 |
{
|
| 1005 |
output.Append("&#");
|
| 1006 |
output.Append(number.ToString(CultureInfo.InvariantCulture)); |
| 1007 |
output.Append(";");
|
| 1008 |
} |
| 1009 |
else |
| 1010 |
{
|
| 1011 |
output.Append((char) number); |
| 1012 |
} |
| 1013 |
state = 0; |
| 1014 |
entity.Length = 0; |
| 1015 |
have_trailing_digits = false; |
| 1016 |
} |
| 1017 |
else if (Char.IsDigit(c)) |
| 1018 |
{
|
| 1019 |
number = number*10 + (c - '0'); |
| 1020 |
have_trailing_digits = true; |
| 1021 |
} |
| 1022 |
else |
| 1023 |
{
|
| 1024 |
state = 2; |
| 1025 |
if (have_trailing_digits) |
| 1026 |
{
|
| 1027 |
entity.Append(number.ToString(CultureInfo.InvariantCulture)); |
| 1028 |
have_trailing_digits = false; |
| 1029 |
} |
| 1030 |
entity.Append(c); |
| 1031 |
} |
| 1032 |
} |
| 1033 |
} |
| 1034 |
|
| 1035 |
if (entity.Length > 0) |
| 1036 |
{
|
| 1037 |
output.Append(entity.ToString()); |
| 1038 |
} |
| 1039 |
else if (have_trailing_digits) |
| 1040 |
{
|
| 1041 |
output.Append(number.ToString(CultureInfo.InvariantCulture)); |
| 1042 |
} |
| 1043 |
return output.ToString(); |
| 1044 |
} |
| 1045 |
|
| 1046 |
/// <summary> |
| 1047 |
/// Decodes an HTML-encoded string and sends the resulting output to a TextWriter output stream. |
| 1048 |
/// </summary> |
| 1049 |
/// <param name="s">The HTML string to decode</param> |
| 1050 |
/// <param name="output">The TextWriter output stream containing the decoded string. </param> |
| 1051 |
public static void HtmlDecode(string s, TextWriter output) |
| 1052 |
{
|
| 1053 |
if (s != null) |
| 1054 |
{
|
| 1055 |
output.Write(HtmlDecode(s)); |
| 1056 |
} |
| 1057 |
} |
| 1058 |
|
| 1059 |
/// <summary> |
| 1060 |
/// HTML-encodes a string and returns the encoded string. |
| 1061 |
/// </summary> |
| 1062 |
/// <param name="s">The text string to encode. </param> |
| 1063 |
/// <returns>The HTML-encoded text.</returns> |
| 1064 |
public static string HtmlEncode(string s) |
| 1065 |
{
|
| 1066 |
if (s == null) |
| 1067 |
{
|
| 1068 |
return null; |
| 1069 |
} |
| 1070 |
|
| 1071 |
var needEncode = false; |
| 1072 |
for (var i = 0; i < s.Length; i++) |
| 1073 |
{
|
| 1074 |
var c = s[i]; |
| 1075 |
if (c == '&' || c == '"' || c == '<' || c == '>' || c > 159) |
| 1076 |
{
|
| 1077 |
needEncode = true; |
| 1078 |
break; |
| 1079 |
} |
| 1080 |
} |
| 1081 |
|
| 1082 |
if (!needEncode) |
| 1083 |
{
|
| 1084 |
return s; |
| 1085 |
} |
| 1086 |
|
| 1087 |
var output = new StringBuilder(); |
| 1088 |
|
| 1089 |
var len = s.Length; |
| 1090 |
for (var i = 0; i < len; i++) |
| 1091 |
{
|
| 1092 |
switch (s[i]) |
| 1093 |
{
|
| 1094 |
case '&': |
| 1095 |
output.Append("&");
|
| 1096 |
break; |
| 1097 |
case '>': |
| 1098 |
output.Append(">");
|
| 1099 |
break; |
| 1100 |
case '<': |
| 1101 |
output.Append("<");
|
| 1102 |
break; |
| 1103 |
case '"': |
| 1104 |
output.Append(""");
|
| 1105 |
break; |
| 1106 |
default: |
| 1107 |
// MS starts encoding with &# from 160 and stops at 255. |
| 1108 |
// We don't do that. One reason is the 65308/65310 unicode |
| 1109 |
// characters that look like '<' and '>'. |
| 1110 |
#if TARGET_JVM |
| 1111 |
if (s [i] > 159 && s [i] < 256) {
|
| 1112 |
#else |
| 1113 |
if (s[i] > 159) |
| 1114 |
{
|
| 1115 |
#endif |
| 1116 |
output.Append("&#");
|
| 1117 |
output.Append(((int) s[i]).ToString(CultureInfo.InvariantCulture)); |
| 1118 |
output.Append(";");
|
| 1119 |
} |
| 1120 |
else |
| 1121 |
{
|
| 1122 |
output.Append(s[i]); |
| 1123 |
} |
| 1124 |
break; |
| 1125 |
} |
| 1126 |
} |
| 1127 |
return output.ToString(); |
| 1128 |
} |
| 1129 |
|
| 1130 |
/// <summary> |
| 1131 |
/// HTML-encodes a string and sends the resulting output to a TextWriter output stream. |
| 1132 |
/// </summary> |
| 1133 |
/// <param name="s">The string to encode. </param> |
| 1134 |
/// <param name="output">The TextWriter output stream containing the encoded string. </param> |
| 1135 |
public static void HtmlEncode(string s, TextWriter output) |
| 1136 |
{
|
| 1137 |
if (s != null) |
| 1138 |
{
|
| 1139 |
output.Write(HtmlEncode(s)); |
| 1140 |
} |
| 1141 |
} |
| 1142 |
|
| 1143 |
public static string UrlPathEncode(string s) |
| 1144 |
{
|
| 1145 |
if (string.IsNullOrEmpty(s)) |
| 1146 |
return s; |
| 1147 |
|
| 1148 |
var result = new MemoryStream(); |
| 1149 |
var length = s.Length; |
| 1150 |
for (var i = 0; i < length; i++) |
| 1151 |
{
|
| 1152 |
UrlPathEncodeChar(s[i], result); |
| 1153 |
} |
| 1154 |
|
| 1155 |
var bytes = result.ToArray(); |
| 1156 |
return Encoding.UTF8.GetString(bytes, 0, bytes.Length); |
| 1157 |
} |
| 1158 |
|
| 1159 |
private static void UrlPathEncodeChar(char c, Stream result) |
| 1160 |
{
|
| 1161 |
if (c < 33 || c > 126) |
| 1162 |
{
|
| 1163 |
var bIn = Encoding.UTF8.GetBytes(c.ToString()); |
| 1164 |
for (var i = 0; i < bIn.Length; i++) |
| 1165 |
{
|
| 1166 |
result.WriteByte((byte) '%'); |
| 1167 |
var idx = bIn[i] >> 4; |
| 1168 |
result.WriteByte((byte) hexChars[idx]); |
| 1169 |
idx = bIn[i] & 0x0F; |
| 1170 |
result.WriteByte((byte) hexChars[idx]); |
| 1171 |
} |
| 1172 |
} |
| 1173 |
else if (c == ' ') |
| 1174 |
{
|
| 1175 |
result.WriteByte((byte) '%'); |
| 1176 |
result.WriteByte((byte) '2'); |
| 1177 |
result.WriteByte((byte) '0'); |
| 1178 |
} |
| 1179 |
else |
| 1180 |
result.WriteByte((byte) c); |
| 1181 |
} |
| 1182 |
|
| 1183 |
public static NameValueCollection ParseQueryString(string query) |
| 1184 |
{
|
| 1185 |
return ParseQueryString(query, Encoding.UTF8); |
| 1186 |
} |
| 1187 |
|
| 1188 |
public static NameValueCollection ParseQueryString(string query, Encoding encoding) |
| 1189 |
{
|
| 1190 |
if (query == null) |
| 1191 |
throw new ArgumentNullException("query");
|
| 1192 |
if (encoding == null) |
| 1193 |
throw new ArgumentNullException("encoding");
|
| 1194 |
if (query.Length == 0 || (query.Length == 1 && query[0] == '?')) |
| 1195 |
return new NameValueCollection(); |
| 1196 |
if (query[0] == '?') |
| 1197 |
query = query.Substring(1); |
| 1198 |
|
| 1199 |
var result = new NameValueCollection(); |
| 1200 |
ParseQueryString(query, encoding, result); |
| 1201 |
return result; |
| 1202 |
} |
| 1203 |
|
| 1204 |
internal static void ParseQueryString(string query, Encoding encoding, NameValueCollection result) |
| 1205 |
{
|
| 1206 |
if (query.Length == 0) |
| 1207 |
{
|
| 1208 |
return; |
| 1209 |
} |
| 1210 |
|
| 1211 |
var decoded = HtmlDecode(query); |
| 1212 |
var decodedLength = decoded.Length; |
| 1213 |
var namePos = 0; |
| 1214 |
var first = true; |
| 1215 |
while (namePos <= decodedLength) |
| 1216 |
{
|
| 1217 |
int valuePos = -1, valueEnd = -1; |
| 1218 |
for (var q = namePos; q < decodedLength; q++) |
| 1219 |
{
|
| 1220 |
if (valuePos == -1 && decoded[q] == '=') |
| 1221 |
{
|
| 1222 |
valuePos = q + 1; |
| 1223 |
} |
| 1224 |
else if (decoded[q] == '&') |
| 1225 |
{
|
| 1226 |
valueEnd = q; |
| 1227 |
break; |
| 1228 |
} |
| 1229 |
} |
| 1230 |
|
| 1231 |
if (first) |
| 1232 |
{
|
| 1233 |
first = false; |
| 1234 |
if (decoded[namePos] == '?') |
| 1235 |
{
|
| 1236 |
namePos++; |
| 1237 |
} |
| 1238 |
} |
| 1239 |
|
| 1240 |
string name; |
| 1241 |
if (valuePos == -1) |
| 1242 |
{
|
| 1243 |
name = null; |
| 1244 |
valuePos = namePos; |
| 1245 |
} |
| 1246 |
else |
| 1247 |
{
|
| 1248 |
name = UrlDecode(decoded.Substring(namePos, valuePos - namePos - 1), encoding); |
| 1249 |
} |
| 1250 |
if (valueEnd < 0) |
| 1251 |
{
|
| 1252 |
namePos = -1; |
| 1253 |
valueEnd = decoded.Length; |
| 1254 |
} |
| 1255 |
else |
| 1256 |
{
|
| 1257 |
namePos = valueEnd + 1; |
| 1258 |
} |
| 1259 |
var value = UrlDecode(decoded.Substring(valuePos, valueEnd - valuePos), encoding); |
| 1260 |
|
| 1261 |
result.Add(name, value); |
| 1262 |
if (namePos == -1) |
| 1263 |
{
|
| 1264 |
break; |
| 1265 |
} |
| 1266 |
} |
| 1267 |
} |
| 1268 |
|
| 1269 |
#endregion // Methods |
| 1270 |
} |
| 1271 |
} |