88 lines
2.9 KiB
C#
88 lines
2.9 KiB
C#
/*
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* Copyright (C) Alibaba Cloud Computing
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* All rights reserved.
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*
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* 版权所有 （C）阿里云计算有限公司
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*/
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.Globalization;
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using System.Text;
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namespace Aliyun.Api.LOG.Common.Utilities
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{
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/// <summary>
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/// Description of HttpUtils.
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/// </summary>
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internal static class HttpUtils
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{
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public const string UTF8Charset = "utf-8";
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public const string Iso88591Charset = "iso-8859-1";
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/// <summary>
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/// Builds the URI parameter string from the request parameters.
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/// </summary>
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/// <param name="parameters"></param>
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/// <returns></returns>
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public static string GetRequestParameterString(IEnumerable<KeyValuePair<string, string>> parameters)
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{
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StringBuilder stringBuilder = new StringBuilder();
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bool isFirst = true;
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foreach (var p in parameters)
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{
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Debug.Assert(!string.IsNullOrEmpty(p.Key), "Null Or empty key is not allowed.");
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if (!isFirst)
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{
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stringBuilder.Append("&");
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}
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isFirst = false;
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stringBuilder.Append(p.Key);
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if (p.Value != null)
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{
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stringBuilder.Append("=").Append(UrlEncode(p.Value, UTF8Charset));
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}
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}
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return stringBuilder.ToString();
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}
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/// <summary>
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/// Encodes the URL.
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/// </summary>
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/// <param name="data"></param>
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/// <param name="charset"></param>
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/// <returns></returns>
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public static string UrlEncode(string data, string charset = UTF8Charset)
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{
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Debug.Assert(data != null && !string.IsNullOrEmpty(charset));
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StringBuilder stringBuilder = new StringBuilder(data.Length * 2);
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string text = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-_.~";
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byte[] bytes = Encoding.GetEncoding(charset).GetBytes(data);
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foreach (char c in bytes)
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{
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if (text.IndexOf(c) != -1)
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{
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stringBuilder.Append(c);
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}
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else
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{
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stringBuilder.Append("%").Append(
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string.Format(CultureInfo.InvariantCulture, "{0:X2}", (int)c));
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}
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}
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return stringBuilder.ToString();
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}
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// Convert a text from one charset to another.
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public static string ReEncode(string text, string fromCharset, string toCharset)
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{
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Debug.Assert(text != null);
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var buffer = Encoding.GetEncoding(fromCharset).GetBytes(text);
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return Encoding.GetEncoding(toCharset).GetString(buffer);
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}
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}
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}
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