#----------------------------------*-sh-*--------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2020 OpenCFD Ltd.
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
#
# File
#     wmake/scripts/wmake.wmake-args
#
# Description
#     Reduced argument parser (eg, for scripts using wmake)
#     that handles some common parameters
#
# Usage
#     # Parse the arguments by sourcing this script
#     . ${WM_PROJECT_DIR:?}/wmake/scripts/wmake.wmake-args
#
# Options
#     -s | -silent | -quiet
#     Exports WM_QUIET=true
#
#     -j | -jN | -j N
#     Compile using all or specified N cores/hyperthreads
#
#------------------------------------------------------------------------------

# NB: nArgs to track the current processing position to avoid wraparound
# when checking for optional parameters (eg, the -j processing)

nArgs="$#"
for arg in "$@"
do
    shift; nArgs="$((nArgs - 1))"               # Drop argument

    case "$arg" in

    # Silent operation
    -s | -silent | -quiet)
        export WM_QUIET=true
        continue    # Handled argument
        ;;

    # Parallel compilation (all or specified number of cores)
    -j)
        export WM_NCOMPPROCS=0
        if [ "$nArgs" -gt 0 ]
        then
            case "$1" in
            [0-9]*)
                if WM_NCOMPPROCS="$(expr 0 + "$1" 2>/dev/null)"
                then
                    shift; nArgs="$((nArgs - 1))"   # Drop argument
                fi
                ;;
            esac
        fi
        if [ "${WM_NCOMPPROCS:=0}" -le 0 ]
        then
            WM_NCOMPPROCS=$(getconf _NPROCESSORS_ONLN 2>/dev/null) || \
                WM_NCOMPPROCS=1
        fi

        echo "Compiling enabled on $WM_NCOMPPROCS cores" 1>&2
        continue    # Handled argument
        ;;

    # Parallel compilation (specified number of cores)
    -j[0-9]*)
        export WM_NCOMPPROCS="${arg#-j}"
        if [ "${WM_NCOMPPROCS:=0}" -le 0 ]
        then
            WM_NCOMPPROCS=$(getconf _NPROCESSORS_ONLN 2>/dev/null) || \
                WM_NCOMPPROCS=1
        fi

        echo "Compiling enabled on $WM_NCOMPPROCS cores" 1>&2
        continue    # Handled argument
        ;;
    esac

    set -- "$@" "$arg"     # Reinsert unhandled argument
done

#------------------------------------------------------------------------------