shithub: openh264

ref: e7795c8dc646b22596eb8da0af2520e711fd9ec4
dir: /codec/console/enc/src/read_config.cpp/

/*!
 * \copy
 *     Copyright (c)  2008-2013, Cisco Systems
 *     All rights reserved.
 *
 *     Redistribution and use in source and binary forms, with or without
 *     modification, are permitted provided that the following conditions
 *     are met:
 *
 *        * Redistributions of source code must retain the above copyright
 *          notice, this list of conditions and the following disclaimer.
 *
 *        * Redistributions in binary form must reproduce the above copyright
 *          notice, this list of conditions and the following disclaimer in
 *          the documentation and/or other materials provided with the
 *          distribution.
 *
 *     THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *     "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *     LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *     FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *     COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 *     BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 *     LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 *     CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 *     LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 *     ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 *     POSSIBILITY OF SUCH DAMAGE.
 *
 *  read_config.h
 *
 *  Abstract
 *      Class for reading parameter settings in a configure file.
 *
 *  History
 *      08/18/2008 Created
 *
 *****************************************************************************/

#include <stdio.h>
#include <string.h>
#include "read_config.h"

#if defined(_MSC_VER)
#pragma warning(push)
#pragma warning(disable:4996)
#endif

CReadConfig::CReadConfig()
: m_pCfgFile( NULL )
, m_strCfgFileName("")
, m_iLines( 0 )
{
}

CReadConfig::CReadConfig( const char *kpConfigFileName )
: m_pCfgFile(0)
, m_strCfgFileName(kpConfigFileName)
, m_iLines(0)
{
	if ( strlen(kpConfigFileName) > 0 ){	// confirmed_safe_unsafe_usage
		m_pCfgFile = fopen(kpConfigFileName, "r");
	}
}

CReadConfig::CReadConfig( const string& kpConfigFileName )
: m_pCfgFile(0)
, m_strCfgFileName(kpConfigFileName)
, m_iLines(0)
{
	if ( kpConfigFileName.length() > 0 )
	{
		m_pCfgFile = fopen(kpConfigFileName.c_str(), "r");
	}
}

CReadConfig::~CReadConfig()
{
	if ( m_pCfgFile ){
		fclose( m_pCfgFile );
		m_pCfgFile = NULL;
	}
}

void CReadConfig::Openf(const char *kpStrFile)
{
	if ( kpStrFile != NULL && strlen(kpStrFile) > 0 )	// confirmed_safe_unsafe_usage
	{
		m_strCfgFileName = kpStrFile;
		m_pCfgFile = fopen(kpStrFile, "r");
	}
}

long CReadConfig::ReadLine( string* pVal, const int kiValSize/* = 4*/ )
{
	if ( m_pCfgFile == NULL || pVal == NULL || kiValSize <= 1)
		return 0;
	
	string *strTags = &pVal[0];
	int nTagNum = 0, n = 0;
	bool bCommentFlag = false;	
	
	while (n < kiValSize) {
		pVal[n]	= "";
		++ n;
	}	

	do {
		const char kCh = (char)fgetc(m_pCfgFile);
		
		if ( kCh == '\n' || feof(m_pCfgFile) ){
			++ m_iLines;
			break;
		}
		if ( kCh == '#' )
			bCommentFlag = true;
		if ( !bCommentFlag ){
			if ( kCh == '\t' || kCh == ' ' ){
				if ( nTagNum >= kiValSize )
					break;
				if ( !(*strTags).empty() ){
					++ nTagNum;
					strTags	= &pVal[nTagNum];
				}
			}
			else
				*strTags += kCh;
		}
		
	} while(true);
	
	return 1+nTagNum;
}

const bool CReadConfig::EndOfFile()
{
	if (m_pCfgFile == NULL)
		return true;
	return feof(m_pCfgFile) ? true : false;
}

const int CReadConfig::GetLines()
{
	return m_iLines;
}

const bool CReadConfig::ExistFile()
{
	return (m_pCfgFile != NULL);
}

const string& CReadConfig::GetFileName()
{
	return m_strCfgFileName;
}

#if defined(_MSC_VER)
#pragma warning(pop)
#endif