Util.cpp

Go to the documentation of this file.

/*
 * DUNE DAQ modification notice:
 * This file has been modified from the original ATLAS ers source for the DUNE DAQ project.
 * Fork baseline commit: 8267df82a4f6fe6bf02c4014923eba19eddc4614 (2020-04-14).
 * Renamed since fork: yes (from src/Util.cxx to src/Util.cpp).
 *
 * Original copyright:
 * Copyright (C) 2001-2020 CERN for the benefit of the ATLAS collaboration.
 * Licensed under the Apache License, Version 2.0.
 */
 
#include <stdio.h>
 
#include <ers/internal/Util.hpp>
#include <ers/internal/macro.hpp>
 
void
ers::tokenize(  const std::string & text,
        const std::string & separators,
        std::vector<std::string> & result )
{
    std::string::size_type start_p, end_p;
    start_p = 0;
    do
    {
    end_p = text.find_first_of(separators,start_p);
    if (end_p == std::string::npos)
        {
        end_p = text.length(); 
    }
    result.push_back( text.substr( start_p, end_p - start_p ) );
    start_p = text.find_first_not_of( separators, end_p );
    }
    while( start_p != std::string::npos );
}
 
int
ers::read_from_environment( const char * name, int default_value )
{
    int value = default_value;
    const char * env = ::getenv( name );
    if ( env )
    {
    if ( sscanf( env, "%d", &value ) != 1 )
        {
        ERS_INTERNAL_ERROR( "Wrong value \"" << env
            << "\" is given for the \"" << name << "\" environment" )
        }
    }
    return value;
}
 
const char * 
ers::read_from_environment( const char * name, const char * default_value )
{
    const char * env = ::getenv( name );
    return ( env ? env : default_value);
}