#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2016-2019 OpenCFD Ltd.
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, licensed under GNU General Public License
#     <http://www.gnu.org/licenses/>.
#
# Script
#     minCmake
#
# Description
#     Scour CMakeLists.txt files to report the cmake_minimum required.
#
# ----------------------------------------------
# NO USER-CONFIGURABLE SETTINGS WITHIN THIS FILE
#------------------------------------------------------------------------------
# Run from third-party directory only
cd "${0%/*}" || exit
wmakeCheckPwd "$WM_THIRD_PARTY_DIR" 2>/dev/null || {
    echo "Error (${0##*/}) : not located in \$WM_THIRD_PARTY_DIR"
    echo "    Check your OpenFOAM environment and installation"
    exit 1
}
#------------------------------------------------------------------------------
usage() {
    exec 1>&2
    while [ "$#" -ge 1 ]; do echo "$1"; shift; done
    cat<<USAGE

usage: ${0##*/} [OPTION] [dir1 ... dirN]
options:
  -help

* Scour specified directories for CMakeLists.txt and their cmake_minimum.
* Without any arguments, select all first level directories.

USAGE
    exit 1
}
#------------------------------------------------------------------------------
# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help)
        usage
        ;;
    -*)
        usage "unknown option: '$1'"
        ;;
    *)
        break
        ;;
    esac
    shift
done

# Nothing specified - use first level of unpacked directories
[ "$#" -gt 0 ] || set -- $(find -mindepth 1 -maxdepth 1 -type d)

for dir
do
    dir="${dir#./}" # Remove leading  "./"
    dir="${dir%/}"  # Remove trailing "/"

    min=$(sed -n \
        -e 's/^.*cmake_minimum.*VERSION *\([0-9.][0-9.]*\).*/\1/p' \
        "$dir/CMakeLists.txt" \
        2>/dev/null | head -1)

    if [ -n "$min" ]
    then
        # Remove trailing ".0" from version
        echo "${min%.0}" "${dir#sources/}"
    fi

done \
    | sort -n -k 1 \
    | xargs printf "    %-10s  %s\n"
    # Use 4 leading spaces for easier pasting as Markdown

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