shithub: openh264

ref: e7795c8dc646b22596eb8da0af2520e711fd9ec4
dir: /codec/console/dec/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
 *
 *****************************************************************************/
#if !defined(WIN32)
#include <string.h>
#include <stdio.h>
#endif



#include "read_config.h"

CReadConfig::CReadConfig( const char *kpConfigFileName )
: m_pCfgFile(0)
, m_strCfgFileName(kpConfigFileName)
, m_ulLines(0)
{
	if ( strlen(kpConfigFileName) > 0 ){	// FIXME: To check validation in configure file name
		m_pCfgFile = fopen(kpConfigFileName, "r");
	}
}

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

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

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

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

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

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