magpie-helper-functions

#!/bin/bash
#############################################################################
#  Copyright (C) 2013 Lawrence Livermore National Security, LLC.
#  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
#  Written by Albert Chu <chu11@llnl.gov>
#  LLNL-CODE-644248
#  
#  This file is part of Magpie, scripts for running Hadoop on
#  traditional HPC systems.  For details, see <URL>.
#  
#  Magpie 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 2 of the License, or
#  (at your option) any later version.
#  
#  Magpie 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 Magpie.  If not, see <http://www.gnu.org/licenses/>.
#############################################################################

# Export helper functions
#
# This is used by scripts, don't edit this
#
# Unlike 'magpie-common-functions', these are outside of 'magpie' and
# do not depend on any variables/functions/environment variables
# within the Magpie system.

Magpie_walltime_to_minutes () {
    local walltime=$1
    local numcolons=`echo ${walltime} | awk -F: '{print NF-1}'`

    if [ "${numcolons}" == "2" ]
    then
	walltimetominutes=`echo ${walltime} | awk -F':' '{print $1 * 60 + $2 + $3 / 60}' | xargs printf "%1.0f"`
    elif [ "${numcolons}" == "1" ]
    then
	walltimetominutes=`echo ${walltime} | awk -F':' '{print $1 + $2 / 60}' | xargs printf "%1.0f"`
    fi
}

# From http://stackoverflow.com/questions/4023830/bash-how-compare-two-strings-in-version-format
# Returns 0 for ==, 1 for $1 > $2, 2 for $1 < $2
Magpie_vercomp () {
    if [[ $1 == $2 ]]
    then
        return 0
    fi
    local IFS=.
    local i ver1=($1) ver2=($2)
    # fill empty fields in ver1 with zeros
    for ((i=${#ver1[@]}; i<${#ver2[@]}; i++))
    do
        ver1[i]=0
    done
    for ((i=0; i<${#ver1[@]}; i++))
    do
        if [[ -z ${ver2[i]} ]]
        then
            # fill empty fields in ver2 with zeros
            ver2[i]=0
        fi
        if ((10#${ver1[i]} > 10#${ver2[i]}))
        then
            return 1
        fi
        if ((10#${ver1[i]} < 10#${ver2[i]}))
        then
            return 2
        fi
    done
    return 0
}