#!/bin/sh
#
#   SPDX-FileCopyrightText: 2014 Aurélien Gâteau <agateau@kde.org>
#   SPDX-FileCopyrightText: 2019 Adriaan de Groot <groot@kde.org>
#   SPDX-License-Identifier: BSD-2-Clause
#
# Calls astyle with settings matching Calamares coding style
# Requires astyle >= 2.04 and clang-format-7 -8 or -9
#
# Clang-format-10 is **not** supported, since it changes a default
# that re-introduces a space into empty function bodies; this
# can be turned off with a style setting, but that breaks
# older format versions which don't recognize the setting.
#
# You can pass in directory names, in which case the files
# in that directory (NOT below it) are processed.
#
LANG=C
LC_ALL=C
LC_NUMERIC=C
export LANG LC_ALL LC_NUMERIC

AS=$( which astyle )

CF_VERSIONS="clang-format-8 clang-format80 clang-format90 clang-format-9.0.1 clang-format"
for _cf in $CF_VERSIONS
do
	# Not an error if this particular clang-format isn't found
	CF=$( which $_cf 2> /dev/null || true )
	test -n "$CF" && break
done

test -n "$AS" || { echo "! No astyle found in PATH"; exit 1 ; }
test -n "$CF" || { echo "! No clang-format ($CF_VERSIONS) found in PATH"; exit 1 ; }
test -x "$AS" || { echo "! $AS is not executable."; exit 1 ; }
test -x "$CF" || { echo "! $CF is not executable."; exit 1 ; }

unmangle_clang_format=""
format_version=`"$CF" --version | tr -dc '[^.0-9]' | cut  -d . -f 1`
if expr "$format_version" '<' 8 > /dev/null ; then
	echo "! Clang-format version 8+ required"
	exit 1
fi
if expr "$format_version" '<' 10 > /dev/null ; then
	:
else
	unmangle_clang_format=$( dirname $0 )/../.clang-format
	echo "SpaceInEmptyBlock: false" >> "$unmangle_clang_format"
fi

set -e

any_dirs=no
for d in "$@"
do
	test -d "$d" && any_dirs=yes
done

style_some()
{
	if test -n "$*" ; then
		$AS --options=$(dirname $0)/astylerc --quiet "$@"
		$CF -i -style=file "$@"
	fi
}

if test "x$any_dirs" = "xyes" ; then
	for d in "$@"
	do
		if test -d "$d"  ; then
			style_some $( find "$d" -maxdepth 1 -type f -name '*.cpp' -o -name '*.h' )
		else
			style_some "$d"
		fi
	done
else
	style_some "$@"
fi

if test -n "$unmangle_clang_format" ; then
	sed -i.bak '/^SpaceInEmptyBlock/d' "$unmangle_clang_format"
fi