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SdpConnection.cpp
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156 lines (136 loc) · 3.82 KB
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/*
* Copyright (C) 2012 Yee Young Han <websearch@naver.com> (http://blog.naver.com/websearch)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "SipPlatformDefine.h"
#include "SdpConnection.h"
#include <stdlib.h>
#include "MemoryDebug.h"
/**
* @ingroup SdpParser
* @brief 생성자
*/
CSdpConnection::CSdpConnection() : m_iMulticastTtl(-1), m_iMulticastNum(-1)
{
}
/**
* @ingroup SdpParser
* @brief 소멸자
*/
CSdpConnection::~CSdpConnection()
{
}
/**
* @ingroup SdpParser
* @brief SDP connection 의 value 문자열을 파싱한다.
* @param pszText SDP connection 의 value 문자열
* @param iTextLen SDP connection 의 value 문자열 길이
* @returns 성공하면 파싱한 길이를 리턴하고 그렇지 않으면 -1를 리턴한다.
*/
int CSdpConnection::Parse( const char * pszText, int iTextLen )
{
Clear();
if( pszText == NULL || iTextLen <= 0 ) return -1;
int iPos, iStartPos = 0, iType = 0;
for( iPos = 0; iPos < iTextLen; ++iPos )
{
if( pszText[iPos] == ' ' || pszText[iPos] == '/' )
{
SetData( pszText + iStartPos, iPos - iStartPos, iType );
++iType;
iStartPos = iPos + 1;
}
}
if( iStartPos < iTextLen )
{
SetData( pszText + iStartPos, iPos - iStartPos, iType );
}
return iTextLen;
}
/**
* @ingroup SdpParser
* @brief SDP connection 의 value 문자열을 저장한다.
* @param pszText SDP connection 의 value 문자열을 저장할 변수
* @param iTextSize pszText 변수의 크기
* @returns 성공하면 저장된 문자열 길이를 리턴하고 그렇지 않으면 -1 를 리턴한다.
*/
int CSdpConnection::ToString( char * pszText, int iTextSize )
{
if( pszText == NULL || iTextSize <= 0 ) return -1;
if( Empty() ) return -1;
int iLen;
iLen = snprintf( pszText, iTextSize, "%s %s %s", m_strNetType.c_str(), m_strAddrType.c_str(), m_strAddr.c_str() );
if( m_iMulticastTtl >= 0 )
{
iLen += snprintf( pszText + iLen, iTextSize - iLen, "/%d", m_iMulticastTtl );
if( m_iMulticastNum >= 0 )
{
iLen += snprintf( pszText + iLen, iTextSize - iLen, "/%d", m_iMulticastNum );
}
}
return iLen;
}
/**
* @ingroup SdpParser
* @brief 멤버 변수를 초기화시킨다.
*/
void CSdpConnection::Clear()
{
m_strNetType.clear();
m_strAddrType.clear();
m_strAddr.clear();
m_iMulticastTtl = -1;
m_iMulticastNum = -1;
}
/**
* @ingroup SdpParser
* @brief 데이터가 존재하면 false 를 리턴하고 그렇지 않으면 true 를 리턴한다.
* @return 데이터가 존재하면 false 를 리턴하고 그렇지 않으면 true 를 리턴한다.
*/
bool CSdpConnection::Empty()
{
if( m_strNetType.empty() || m_strAddrType.empty() || m_strAddr.empty() ) return true;
return false;
}
void CSdpConnection::SetData( const char * pszData, int iLen, int iType )
{
switch( iType )
{
case 0:
m_strNetType.append( pszData, iLen );
break;
case 1:
m_strAddrType.append( pszData, iLen );
break;
case 2:
m_strAddr.append( pszData, iLen );
break;
case 3:
{
std::string strTemp;
strTemp.append( pszData, iLen );
m_iMulticastTtl = atoi( strTemp.c_str() );
}
break;
case 4:
{
std::string strTemp;
strTemp.append( pszData, iLen );
m_iMulticastNum = atoi( strTemp.c_str() );
}
break;
}
}