72 lines
2.2 KiB
C#
72 lines
2.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Text;
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namespace Net.Mail
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{
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internal sealed class TopCommand : Pop3Command<RetrResponse>
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{
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private int _messageNumber;
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private int _lineCount;
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/// <summary>
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/// Initializes a new instance of the <see cref="TopCommand"/> class.
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/// </summary>
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/// <param name="stream">The stream.</param>
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/// <param name="messageNumber">The message number.</param>
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/// <param name="lineCount">The line count.</param>
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internal TopCommand(Stream stream, int messageNumber, int lineCount)
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: base(stream, true, Pop3State.Transaction)
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{
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if (messageNumber < 1)
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{
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throw new ArgumentOutOfRangeException("messageNumber");
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}
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if (lineCount < 0)
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{
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throw new ArgumentOutOfRangeException("lineCount");
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}
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_messageNumber = messageNumber;
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_lineCount = lineCount;
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}
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/// <summary>
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/// Abstract method intended for inheritors to
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/// build out the byte[] request message for
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/// the specific command.
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/// </summary>
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/// <returns>
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/// The byte[] containing the request message.
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/// </returns>
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protected override byte[] CreateRequestMessage()
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{
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return GetRequestMessage(Pop3Commands.Top, _messageNumber.ToString(), " ", _lineCount.ToString(), Pop3Commands.Crlf);
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}
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/// <summary>
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/// Creates the response.
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/// </summary>
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/// <param name="buffer">The buffer.</param>
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/// <returns>
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/// The <c>Pop3Response</c> containing the results of the
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/// Pop3 command execution.
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/// </returns>
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protected override RetrResponse CreateResponse(byte[] buffer)
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{
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Pop3Response response = Pop3Response.CreateResponse(buffer);
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if (response == null)
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{
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return null;
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}
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string[] messageLines = GetResponseLines(StripPop3HostMessage(buffer, response.HostMessage));
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return new RetrResponse(response, messageLines);
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}
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}
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}
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