63 lines
1.7 KiB
C#
63 lines
1.7 KiB
C#
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//------------------------------------------------------------------------------
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// <copyright file="HttpEncoderUtility.cs" company="Microsoft">
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// Copyright (c) Microsoft Corporation. All rights reserved.
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// </copyright>
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//------------------------------------------------------------------------------
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/*
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* Helper class for common encoding routines
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*
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* Copyright (c) 2009 Microsoft Corporation
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*/
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namespace System.Web.Util {
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using System;
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using System.Web;
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internal static class HttpEncoderUtility {
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public static int HexToInt(char h) {
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return (h >= '0' && h <= '9') ? h - '0' :
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(h >= 'a' && h <= 'f') ? h - 'a' + 10 :
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(h >= 'A' && h <= 'F') ? h - 'A' + 10 :
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-1;
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}
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public static char IntToHex(int n) {
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Debug.Assert(n < 0x10);
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if (n <= 9)
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return (char)(n + (int)'0');
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else
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return (char)(n - 10 + (int)'a');
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}
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// Set of safe chars, from RFC 1738.4 minus '+'
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public static bool IsUrlSafeChar(char ch) {
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if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9'))
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return true;
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switch (ch) {
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case '-':
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case '_':
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case '.':
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case '!':
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case '*':
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case '(':
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case ')':
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return true;
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}
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return false;
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}
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// Helper to encode spaces only
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internal static String UrlEncodeSpaces(string str) {
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if (str != null && str.IndexOf(' ') >= 0)
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str = str.Replace(" ", "%20");
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return str;
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}
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}
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}
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