#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2011-2015 OpenFOAM Foundation
#    \\/     M anipulation  |
#-------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM.
#
#     OpenFOAM 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 3 of the License, or
#     (at your option) any later version.
#
#     OpenFOAM 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 OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
#
# Script
#     wclean
#
# Description
#     Clean up the wmake control directory Make/\$WM_OPTIONS and remove the
#     lnInclude directories generated for libraries.
#
#------------------------------------------------------------------------------
Script=${0##*/}

usage() {
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE

Usage: $Script [OPTION] [dir]
       $Script [OPTION] target [dir [MakeDir]]

options:
  -s | -silent      ignored - for compatibility with wmake
  -help             print the usage

Clean up the wmake control directory Make/\$WM_OPTIONS and remove the
lnInclude directories generated for libraries.

The targets correspond to a subset of the 'wmake' special targets:
  all               all subdirectories, uses any Allwclean or Allclean
                    files if they exist
  exe | lib | libo | libso
                    clean Make, any *.dep files and lnInclude directories
  rmdir
                    remove only empty directories for the requested dir

USAGE
    exit 1
}


#------------------------------------------------------------------------------
# Parse arguments and options
#------------------------------------------------------------------------------

while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help)
        usage
        ;;
    -s | -silent)    # ignored - for compatibility with wmake
        shift
        ;;
    -*)
        usage "unknown option: '$*'"
        ;;
    *)
        break
        ;;
    esac
done


#------------------------------------------------------------------------------
# check arguments and change to the directory in which to run wclean
#------------------------------------------------------------------------------

unset dir targetType
MakeDir=Make

if [ $# -ge 1 ]
then

    if [ -d "$1" ]
    then
        dir=$1
    else
        targetType=$1
    fi

    # specified directory name:
    [ $# -ge 2 ] && dir=$2

    # specified alternative name for the Make sub-directory:
    [ $# -ge 3 ] && MakeDir=$3

    if [ "$dir" ]
    then
        cd $dir 2>/dev/null || {
            echo "$Script error: could not change to directory '$dir'" 1>&2
            exit 1
        }
    fi

    # provide some feedback
    echo "$Script ${dir:-./}"
fi


#------------------------------------------------------------------------------
# If target=rmdir, then only remove empty folders and exit
#------------------------------------------------------------------------------

if [ "$targetType" = rmdir ]
then
    # get subdirs ourselves so we can avoid particular directories
    for dir in $(find . -mindepth 1 -maxdepth 1 \
                           -type d \( -name .git -prune -o -print \) )
    do
        echo "check dir: $dir"
        find $dir -depth -type d -empty -exec rmdir {} \; -print
    done

    exit 0
fi

#------------------------------------------------------------------------------
# Recurse the directories tree
#------------------------------------------------------------------------------

if [ "$targetType" = all ]
then
    if [ -e Allwclean ]       # consistent with Allwmake
    then
        ./Allwclean
        exit $?
    elif [ -e Allclean ]      # often used for tutorial cases
    then
        ./Allclean
        exit $?
    else
        # For all the sub-directories containing a 'Make' directory
        for dir in `find . \( -type d -a -name Make \)`
        do
            echo $dir
            $0 ${dir%/Make}   # parent directory - trim /Make from the end
        done
    fi
fi

# targetType is not needed beyond this point
unset targetType


#------------------------------------------------------------------------------
# Clean the 'Make' directory if present
#------------------------------------------------------------------------------

if [ -d $MakeDir ]
then
    objectsDir=$MakeDir/$WM_OPTIONS
    if echo $PWD | grep "$WM_PROJECT_DIR"
    then
        platformPath=$WM_PROJECT_DIR/platforms/${WM_OPTIONS}
        objectsDir=$platformPath$(echo $PWD | sed s%$WM_PROJECT_DIR%% )
    fi
    rm -rf $objectsDir 2>/dev/null
fi


#------------------------------------------------------------------------------
# Remove the lnInclude directory if present
#------------------------------------------------------------------------------

if [ -d lnInclude ]
then
    rm -rf lnInclude 2>/dev/null
fi


#------------------------------------------------------------------------------
# Cleanup local variables and functions
#------------------------------------------------------------------------------

unset Script usage


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