C# Quoted-Printable编码 解码介绍
发布时间:2023-06-15 10:30:12 所属栏目:语言 来源:互联网
导读: 代码如下:
# using System;
# using System.Collections;
# using System.Text;
#
# /// <summary>
# /// Class for en
# using System;
# using System.Collections;
# using System.Text;
#
# /// <summary>
# /// Class for en
代码如下: # using System; # using System.Collections; # using System.Text; # # /// <summary> # /// Class for encoding and decoding a string to QuotedPrintable # /// RFC 1521 http://www.ietf.org/rfc/rfc1521.txt # /// RFC 2045 http://www.ietf.org/rfc/rfc2045.txt # /// Date: 2006-03-23 # /// Author: Kevin Spaun # /// Company: SPAUN Informationstechnik GmbH - http://www.spaun-it.com/ # /// Feedback: kspaun@spaun-it.de # /// License: This piece of code comes with no guaranties. You can use it for whatever you want for free. # /// # /// Modified by Will Huang ( http://blog.miniasp.com/post/2008/02/14/Quoted-Printable-Encoding-and-Decoding.aspx ) # /// Modified at 2008-02-13 # /// # /// Modified by reterry (//www.Cuoxin.com) # /// Modified at 2008-11-29 # /// Modified for MySelf # /// # /// </summary> # public class QuotedPrintable # { # private const byte EQUALS = 61; # private const byte CR = 13; # private const byte LF = 10; # private const byte SPACE = 32; # private const byte TAB = 9; # # /// <summary> # /// Encodes a string to QuotedPrintable # /// </summary> # /// <param name="_ToEncode">String to encode</param> # /// <returns>QuotedPrintable encoded string</returns> # public static string Encode(string _ToEncode) # { # StringBuilder Encoded = new StringBuilder(); # string hex = string.Empty; # //byte[] bytes = Encoding.Default.GetBytes(_ToEncode); # byte[] bytes = Encoding.UTF8.GetBytes(_ToEncode); # //int count = 0; # # for (int i = 0; i < bytes.Length; i++) # { # //these characters must be encoded # if ((bytes[i] < 33 || bytes[i] > 126 || bytes[i] == EQUALS) && bytes[i] != CR && bytes[i] != LF && bytes[i] != SPACE) # { # if (bytes[i].ToString("X").Length < 2) # { # hex = "0" + bytes[i].ToString("X"); # Encoded.Append("=" + hex); # } # else # { # hex = bytes[i].ToString("X"); # Encoded.Append("=" + hex); # } # } # else # { # //check if index out of range # if ((i + 1) < bytes.Length) # { # //if TAB is at the end of the line - encode it! # if ((bytes[i] == TAB && bytes[i + 1] == LF) || (bytes[i] == TAB && bytes[i + 1] == CR)) # { # Encoded.Append("=0" + bytes[i].ToString("X")); # } # //if SPACE is at the end of the line - encode it! # else if ((bytes[i] == SPACE && bytes[i + 1] == LF) || (bytes[i] == SPACE && bytes[i + 1] == CR)) # { # Encoded.Append("=" + bytes[i].ToString("X")); # } # else # { # Encoded.Append(System.Convert.ToChar(bytes[i])); # } # } # else # { # Encoded.Append(System.Convert.ToChar(bytes[i])); # } # } # //if (count == 75) # //{ # // Encoded.Append("=/r/n"); //insert soft-linebreak # // count = 0; # //} # //count++; # } # # return Encoded.ToString(); # } # # /// <summary> (编辑:晋中站长网) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |
推荐文章
站长推荐