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// TextPlain.cpp: implementation of the CTextPlain class. 
// Author: Wes Clyburn (clyburnw@enmu.edu) 
////////////////////////////////////////////////////////////////////// 
 
#include "stdafx.h" 
#include "TextPlain.h" 
#include "MIMEMessage.h" 
 
#ifdef _DEBUG 
#undef THIS_FILE 
static char THIS_FILE[]=__FILE__; 
#define new DEBUG_NEW 
#endif 
 
////////////////////////////////////////////////////////////////////// 
// Construction/Destruction 
////////////////////////////////////////////////////////////////////// 
 
CTextPlain::CTextPlain( int nContentType, UINT nWrapPos ) 
	:CMIMEContentAgent( nContentType ) 
{ 
	m_nWrapPos = nWrapPos;	 
} 
 
CTextPlain::~CTextPlain() 
{ 
 
} 
 
CString CTextPlain::GetContentTypeString() 
{ 
	CString s; 
	s = _T( "text/plain" ); 
	return s; 
} 
 
BOOL CTextPlain::AppendPart(LPCTSTR szContent,  
							LPCTSTR szParameters,  
							int nEncoding,  
							BOOL bPath,  
							CString & sDestination) 
{ 
	CString sSubHeader; 
	CString sWrapped; 
	sSubHeader = build_sub_header( szContent, 
								   szParameters, 
								   nEncoding, 
								   bPath ); 
	sWrapped = wrap_text( szContent ); 
	sDestination += (sSubHeader + sWrapped); 
	return TRUE; 
} 
 
CString CTextPlain::build_sub_header(LPCTSTR szContent,  
									 LPCTSTR szParameters,  
									 int nEncoding,  
									 BOOL bPath) 
{ 
	CString sSubHeader; 
	sSubHeader.Format( _T( "Content-Type: %s%s\r\n" ), 
					   (LPCTSTR)GetContentTypeString(), 
					   szParameters ); 
	sSubHeader += _T( "Content-Transfer-Encoding: " ); 
	switch( nEncoding ) 
	{ 
		// This class handles only 7bit encoding, but others 
		//  may be added here. 
		default: 
			//Fall through to... 
		case CMIMEMessage::_7BIT: 
			sSubHeader += _T( "7Bit" ); 
	} 
	sSubHeader += _T( "\r\n\r\n" ); 
	return sSubHeader; 
} 
 
CString CTextPlain::wrap_text(LPCTSTR szText) 
{ 
	CString sTemp; 
	CString sLeft; 
	CString sRight; 
	int lp = 0; 
	UINT nCount = 0; 
	int nSpacePos = 0; 
 
	ASSERT( szText != NULL ); 
	if( szText == NULL ) 
		return sTemp; 
	sTemp = szText; 
	while( lp < sTemp.GetLength() ) 
	{ 
		if( sTemp[ lp ] == ' ' ) 
			nSpacePos = lp; 
		// Reset counter on newline 
		if( sTemp.Mid( lp, 2 ) == _T( "\r\n" ) ) 
			nCount = 0; 
		// Wrap text at last found space 
		if( nCount > m_nWrapPos ) 
		{ 
			sLeft = sTemp.Left( nSpacePos ); 
			sRight = sTemp.Right( sTemp.GetLength() - nSpacePos ); 
			sLeft.TrimRight(); 
			sRight.TrimLeft(); 
			sLeft += _T( "\r\n" ); 
			sTemp = sLeft + sRight; 
			nCount = 0; 
		} 
		else 
			nCount++; 
		lp++; 
	} 
	return sTemp; 
}