#!/bin/bash

# Copyright (c) 2019-2020 Kevin R Croft <krcroft@gmail.com>
# SPDX-License-Identifier: GPL-2.0-or-later

# This script reduces the size of an MSYS2 and MingGW installation
# under Windows. Its main use is to shrink these areas to fit within
# GitHub's cache limits; however it can also be used by end-users wanting
# to save space.
#
# Usage: ./shrink-msys2.sh
#
set -xuo pipefail
set +e

# Clean all the package archives from pacman
pacman -Scc --noconfirm

# Strip binaries using their associated striping tool
for dir in /usr /mingw32 /mingw64; do

	# Enter our directory if we have it
	cd "${dir}" || continue

	# Check if we have an associated stripping tool
	if [[ ! -f "bin/strip.exe" ]]; then continue; fi

	# Start stripping
	find . -type f              \
		\( -iname '*.exe'       \
		   -or -iname '*.a'     \
		   -or -iname '*.dll'   \
		   -or -iname '*.so'    \
		\)                      \
		-a ! -iname 'strip.exe' \
		-print0                 \
	| xargs -0 ./bin/strip.exe --strip-unneeded
done

# Delete documentation directories
rm -rf /mingw*/share/man
rm -rf /mingw*/share/doc

# This entire script is best-effort, so always return success
exit 0