#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | Copyright (C) 2016-2017 OpenCFD Ltd.
#    \\/     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
#     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 ${0%/*} && wmakeCheckPwd "$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

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