ALFA_ConfigParams.cxx

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/*
  Copyright (C) 2002-2022 CERN for the benefit of the ATLAS collaboration
*/
 
// DefaultParams.cpp: implementation of the ALFA_ConfigParams class.
//
 
#include "ALFA_Geometry/ALFA_ConfigParams.h"
#include <cstdio>
#include <cstdlib>
#include <cstring>

// Construction/Destruction
 
void ALFA_ConfigParams::UnInitialize()
{
    m_bIsValid=false;
    m_strSection="invalid";
    m_mapParams.clear();
}
 
int ALFA_ConfigParams::Init(const char *szFile, const char *szSection)
{
    bool bRes=false;
    FILE* pfile=nullptr;
    char szbuff[256],szsec[256];
    char* ppv;
 
    UnInitialize();
 
    if((pfile=fopen(szFile,"r"))==nullptr) return false;
    
    //read section
    memset(szsec,0,sizeof(szsec));
    if(szSection) strncpy(szsec,szSection,sizeof(szsec)-1);
    //strlwr(szsec);
    m_strSection=szsec;
 
    while(!feof(pfile)){
        fgets(szbuff,sizeof(szbuff),pfile);
        if(*(szbuff+strlen(szbuff)-1)=='\n') *(szbuff+strlen(szbuff)-1)=0;
        if(strcmp(szbuff,szsec) != 0) continue; //if(strcmp(strlwr(szbuff),szsec)) continue;
        else{ bRes=true; break; }
    }
    
    if(!bRes){
        fclose(pfile);
        return 0;
    }
 
    while(!feof(pfile)){
        fgets(szbuff,sizeof(szbuff),pfile);
        if(*szbuff==0 || *szbuff==' ' || *szbuff=='\n' || *szbuff==';') continue;
        if(*szbuff=='[') break;
        if((ppv=strchr(szbuff,'='))==nullptr) continue;
 
        if(*(szbuff+strlen(szbuff)-1)=='\n') *(szbuff+strlen(szbuff)-1)=0;
        *ppv=0; ppv++;
        m_mapParams.insert(StringStringMap::value_type(szbuff,ppv)); 
    }
 
    fclose(pfile);
    if(!m_mapParams.empty()) m_bIsValid=true;
 
    return m_mapParams.size();
}
 
const char* ALFA_ConfigParams::GetParameter(const char *szKey) const
{
    if(!m_bIsValid) return nullptr;
    
    char szbuff[256];
    memset(szbuff,0,sizeof(szbuff));
    if(szKey) strncpy(szbuff,szKey,sizeof(szbuff)-1);
    //strlwr(szbuff);
    
    StringStringMap::const_iterator iter;
    if((iter=m_mapParams.find(szbuff))!=m_mapParams.end()){
        return (*iter).second.c_str();
    }
    else return nullptr;
}
 
bool ALFA_ConfigParams::IsKey(const char *szKey) const
{
    if(!m_bIsValid) return false;
 
    char szbuff[256];
    memset(szbuff,0,sizeof(szbuff));
    if(szKey) strncpy(szbuff,szKey,sizeof(szbuff)-1);
    //strlwr(szbuff);
    
    StringStringMap::const_iterator iter;
    return (iter=m_mapParams.find(szbuff))!=m_mapParams.end();
}