#!/bin/sh -

# === HWMAP-to-Lua converter ===

# This script allows you to put arbitrary HWMAPs into your missions!

#

# Usage:

# It expects a .hwmap file of name "map.hwmap" to be in

# its directory and creates a Lua file (map.lua) containing code to

# draw the map.

# In Lua, call drawMap() in onGameInit. And don't forget

# to set MapGen to mgDrawn. Then your map should be ready to go! :-)

# FILE NAMES 

IN="./map.hwmap";

OUT="./map.lua";

# TEMPORARY FILES

TEMP_UNBASE=$(mktemp);

TEMP_GZIP=$(mktemp);

TEMP_OCTETS=$(mktemp);

base64 -d $IN | tail -c +7 | head -c -4 > $TEMP_UNBASE;

echo -ne "\x1f\x8b\x08\0\0\0\0\0\x02\xff" > $TEMP_GZIP;

# Suppress gunzip warning: "gzip: stdin: unexpected end of file"

cat $TEMP_GZIP $TEMP_UNBASE | gunzip 2> /dev/null > $TEMP_OCTETS;

C=0;

echo -n '-- Map definition automatically converted from HWMAP file by hwmap2lua.sh

local map = {' > $OUT;

od -w240 -t u1 $TEMP_OCTETS | grep -Ev "^[0-9]*[[:space:]]*$" | while read f;

do C=$((C+1));

	if ((C!=1));

	then

		echo "," >> $OUT;

	fi;

	echo -n $f | sed "s/^......./'/;s/  */\\\\/g;s/$/'/" >> $OUT;

done;

echo '}

local function drawMap()

	for m=1, #map do

		ParseCommand("draw "..map[m])

	end

end' >> $OUT;

rm $TEMP_UNBASE $TEMP_GZIP $TEMP_OCTETS;