//?AppOctetStream.cpp:?implementation?of?the?CAppOctetStream?class.
//?Author:?Wes?Clyburn?（clyburnw@enmu.edu）
//////////////////////////////////////////////////////////////////////

#include?“stdafx.h“
#include?“AppOctetStream.h“
#include?“base64.h“
#include?“MIMEMessage.h“

#ifdef?_DEBUG
#undef?THIS_FILE
static?char?THIS_FILE[]=__FILE__;
#define?new?DEBUG_NEW
#endif

//?IMPORTANT:?The?number?of?bytes?we?read?must?be
//??a?multiple?of?3?because?Cbase64‘s?Encode（）
//??method?will?append?padding?characters?（‘=‘）
//??to?make?the?output‘s?size?a?multiple?of?4.
//??（base64?treats?3?8-bit?bytes?as?4?6-bit?‘bytes‘）.
//??MIME?decoders?are?free?to?treat?‘=‘?as?a?signal
//??that?there‘s?no?more?data?so?we?don‘t?want?to?pad
//??until?we‘re?supposed?to.
//?When?at?the?end?of?the?file?the?#?of?bytes?read
//??may?not?be?a?multiple?of?3?but?that‘s?okay
//??because?we?DO?want?the?padding?chars?then.

#define?BYTES_TO_READ?54?//?This?number?guarantess?output?won‘t
						?//?won‘t?exceed?line-length?limit

//////////////////////////////////////////////////////////////////////
//?Construction/Destruction
//////////////////////////////////////////////////////////////////////

CAppOctetStream::CAppOctetStream（?int?nContentType?）
	:CMIMEContentAgent（?nContentType?）
{
}

CAppOctetStream::~CAppOctetStream（）
{
}

BOOL?CAppOctetStream::AppendPart（LPCTSTR?szContent?
								?LPCTSTR?szParameters?
								?int?nEncoding?
								?BOOL?bPath?
								?CString?&?sDestination）
{
	CStdioFile?fAttachment;

	ASSERT（?szContent?!=?NULL?）;
	//?This?class?handles?only?file?attachments?so
	//?it?ignores?the?bPath?parameter.
	if（?szContent?==?NULL?）
		return?FALSE;
	if（?!fAttachment.Open（?szContent?（CFile::modeRead?|?CFile::shareDenyWrite?|?CFile::typeBinary）?）?）
		return?FALSE;
	sDestination?+=?build_sub_header（?szContent
								??????szParameters
									??nEncoding
									??TRUE?）;
	attach_file（?&fAttachment?CMIMEMessage::base64?sDestination?）;
	fAttachment.Close（）;
	return?TRUE;
}


CString?CAppOctetStream::build_sub_header（LPCTSTR?szContent?
										??LPCTSTR?szParameters?
										??int?nEncoding?
										??BOOL?bPath）
{
	CString?sSubHeader;
	CString?sTemp;
	TCHAR?szFName[?_MAX_FNAME?];
	TCHAR?szExt[?_MAX_EXT?];

	_tsplitpath（?szContent?NULL?NULL?szFName?szExt?）;

	//?This?class?ignores?szParameters?and?nEncoding.
	//?It?controls?its?own?parameters?and?only?handles
	//?base64?encoding.
	if（?bPath?）
		sTemp.Format（?“;?file=%s%s“?szFName?szExt?）;
	else
		sTemp?=?_T（?““?）;
	sSubHeader.Format（?_T（?“Content-Type:?%s%s\r\n“?）
						（LPCTSTR）GetContentTypeString（）
						（LPCTSTR）sTemp?）;
	sSubHeader?+=?_T（?“Content-Transfer-Encoding:?base64\r\n“?）;
	sTemp.Format（?_T（?“Content-Disposition:?attachment;?filename=%s%s\r\n“?）
				??szFName?szExt?）;
	sSubHeader?+=?sTemp;
	//?Signal?end?of?sub-header.
	sSubHeader?+=?_T（?“\r\n“?）;?//?Warning:?numerous?concatenation

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2010-07-11?12:34??完成\
?????文件????????4279??2010-07-06?15:04??完成\AppOctetStream.cpp
?????文件????????1239??1998-12-15?18:31??完成\AppOctetStream.h
?????文件????????3867??2010-07-04?23:44??完成\base64.cpp
?????文件????????1113??1998-12-15?18:31??完成\base64.h
?????文件??????296448??2000-11-06?20:03??完成\CodeExchange.exe
?????目錄???????????0??2010-07-11?12:34??完成\Debug\
?????文件???????19883??2010-07-07?10:26??完成\Debug\AppOctetStream.obj
?????文件???????????0??2010-07-07?10:26??完成\Debug\AppOctetStream.sbr
?????文件???????14854??2010-07-07?10:26??完成\Debug\base64.obj
?????文件???????????0??2010-07-07?10:26??完成\Debug\base64.sbr
?????文件???????68115??2010-07-07?10:26??完成\Debug\MailMessage.obj
?????文件???????????0??2010-07-07?10:26??完成\Debug\MailMessage.sbr
?????文件????????4530??2010-07-07?10:26??完成\Debug\MIMECode.obj
?????文件???????????0??2010-07-07?10:26??完成\Debug\MIMECode.sbr
?????文件????????5292??2010-07-07?10:26??完成\Debug\MIMEContentAgent.obj
?????文件???????????0??2010-07-07?10:26??完成\Debug\MIMEContentAgent.sbr
?????文件???????71262??2010-07-07?10:26??完成\Debug\MIMEMessage.obj
?????文件???????????0??2010-07-07?10:26??完成\Debug\MIMEMessage.sbr
?????文件?????5612544??2010-07-08?10:56??完成\Debug\MyEmailClient.bsc
?????文件?????2003064??2010-07-08?10:58??完成\Debug\MyEmailClient.exe
?????文件??????368400??2010-07-08?10:58??完成\Debug\MyEmailClient.ilk
?????文件???????17164??2010-07-07?22:47??完成\Debug\MyEmailClient.obj
?????文件?????7195324??2010-07-07?10:26??完成\Debug\MyEmailClient.pch
?????文件??????648192??2010-07-08?10:58??完成\Debug\MyEmailClient.pdb
?????文件?????1519588??2010-07-08?10:58??完成\Debug\MyEmailClient.res
?????文件???????????0??2010-07-07?22:47??完成\Debug\MyEmailClient.sbr
?????文件???????54397??2010-07-08?10:56??完成\Debug\MyEmailClientDlg.obj
?????文件???????????0??2010-07-08?10:56??完成\Debug\MyEmailClientDlg.sbr
?????文件???????33335??2010-07-07?10:26??完成\Debug\POP3.obj
?????文件???????????0??2010-07-07?10:26??完成\Debug\POP3.sbr
............此處省略45個文件信息