点击下载 QuotedPrintableEncoding.rar
这个类是关于QuotedPrintableEncoding的帮助类
看下面代码吧
/// <summary>
/// 类说明：Assistant
/// 编 码 人：苏飞
/// 联系方式：361983679
/// 更新网站：[url=http://www.cckan.net/thread-655-1-1.html]http://www.cckan.net/thread-655-1-1.html[/url]
/// </summary>
using System;
using System.IO;
using System.Text.RegularExpressions; namespace DotNet.Utilities
{
/// <summary>
/// This class is based on the QuotedPrintable class written by Bill Gearhart
/// </summary>
public static class QuotedPrintableEncoding
{
private const string Equal = "="; private const string HexPattern = "(\\=([0-9A-F][0-9A-F]))"; public static string Decode(string contents)
{
if (contents == null)
{
throw new ArgumentNullException("contents");
} using (StringWriter writer = new StringWriter())
{
using (StringReader reader = new StringReader(contents))
{
string line;
while ((line = reader.ReadLine()) != null)
{
/*remove trailing line whitespace that may have
been added by a mail transfer agent per rule
#3 of the Quoted Printable section of RFC 1521.*/
line.TrimEnd(); if (line.EndsWith(Equal))
{
writer.Write(DecodeLine(line));
} //handle soft line breaks for lines that end with an "="
else
{
writer.WriteLine(DecodeLine(line));
}
}
}
writer.Flush(); return writer.ToString();
}
} private static string DecodeLine(string line)
{
if (line == null)
{
throw new ArgumentNullException("line");
} Regex hexRegex = new Regex(HexPattern, RegexOptions.IgnoreCase); return hexRegex.Replace(line, new MatchEvaluator(HexMatchEvaluator));
} private static string HexMatchEvaluator(Match m)
{
int dec = Convert.ToInt32(m.Groups[].Value, );
char character = Convert.ToChar(dec);
return character.ToString();
}
}
}