#!/bin/sh
#------------------------------------------------------------------------------
# =========                 |
# \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
#  \\    /   O peration     |
#   \\  /    A nd           | www.openfoam.com
#    \\/     M anipulation  |
#------------------------------------------------------------------------------
#     Copyright (C) 2016-2021 OpenCFD Ltd.
#------------------------------------------------------------------------------
# License
#     This file is part of OpenFOAM, distributed under GPL-3.0-or-later.
#
# 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
}
#------------------------------------------------------------------------------
printHelp() {
    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 0  # Clean exit
}
#------------------------------------------------------------------------------
# Parse options
while [ "$#" -gt 0 ]
do
    case "$1" in
    -h | -help*) printHelp;;
    -*)
        echo "$0: Error unknown option: '$1'" 1>&2
        exit 1
        ;;
    *)
        break
        ;;
    esac
    shift
done

# Nothing specified - use first level of unpacked directories
if [ "$#" -eq 0 ]
then
set -- \
$(
    echo "searching..." 1>&2
    find . -mindepth 2 -maxdepth 2 -name CMakeLists.txt
    for dir in sources/*
    do
        [ -d "$dir" ] || continue
        echo "search <$dir>" 1>&2
        depth=1
        # Is sources/pkg/pkg-version ?
        if [ "$(echo "$dir" | sed -e 's#.*/[a-z][a-z]*##' | wc -w)" = 0 ]
        then
            depth=2
        fi
        find "$dir" -maxdepth "$depth" -name CMakeLists.txt
    done
)
fi


echo "processing..." 1>&2
for dir
do
    dir="${dir#./}" # Remove leading  "./"
    dir="${dir%/}"  # Remove trailing "/"

    case "$dir" in
        (*/CMakeLists.txt) file="$dir" ;;
        (*) file="$dir/CMakeLists.txt" ;;
    esac
    dir="$(dirname "$file")"
    dir="$(basename "$dir")"

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

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

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

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