#!/bin/bash

# Copyright 2019 The Go Authors. All rights reserved.

# Use of this source code is governed by a BSD-style

# license that can be found in the LICENSE file.

set -e

shopt -s nullglob

knownfolders="$(printf '%s\n' "/mnt/c/Program Files (x86)/Windows Kits/"/*/Include/*/um/KnownFolders.h | sort -Vr | head -n 1)"

[[ -n $knownfolders ]] || { echo "Unable to find KnownFolders.h" >&2; exit 1; }

{

	echo "// Code generated by 'mkknownfolderids.bash'; DO NOT EDIT."

	echo

	echo "package windows"

	echo "type KNOWNFOLDERID GUID"

	echo "var ("

	while read -r line; do

		[[ $line =~ DEFINE_KNOWN_FOLDER\((FOLDERID_[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+),[\t\ ]*(0x[^,]+)\) ]] || continue

		printf "%s = &KNOWNFOLDERID{0x%08x, 0x%04x, 0x%04x, [8]byte{0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x, 0x%02x}}\n" \

			"${BASH_REMATCH[1]}" $(( "${BASH_REMATCH[2]}" )) $(( "${BASH_REMATCH[3]}" )) $(( "${BASH_REMATCH[4]}" )) \

			$(( "${BASH_REMATCH[5]}" )) $(( "${BASH_REMATCH[6]}" )) $(( "${BASH_REMATCH[7]}" )) $(( "${BASH_REMATCH[8]}" )) \

			$(( "${BASH_REMATCH[9]}" )) $(( "${BASH_REMATCH[10]}" )) $(( "${BASH_REMATCH[11]}" )) $(( "${BASH_REMATCH[12]}" ))

	done < "$knownfolders"

	echo ")"

} | gofmt > "zknownfolderids_windows.go"