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#!/bin/bash

declare -i  section_lines=0
declare     section_name="" zeroPad="0000"
declare -a  lines
declare     file="${1}"
declare -a startpos_x startpos_y terrain_layer e03_layer
declare -i startpos_count=0
declare    temp startpos_terrains="adfghjmpst"
declare    IFSoriginal="${IFS}"

IFS=$'\r\n' GLOBIGNORE='*' command eval 'lines=( $(sed -e 's/^[[:space:]]*//' "${file}") )'
IFS="${IFSoriginal}"

for (( c=0 ; c <= ${#lines[*]} ; c++ )) ; do
	section_lines=$(( ${section_lines} + 1 ))
	if [ "${lines[${c}]:0:1}" == "[" ] ; then
		if [ "${section_name}" != "" ] ; then
			echo -e "\tEnd of section ${section_name}\tlines=${section_lines}\n"
		fi
		section_name="${lines[${c}]}"
		echo -e "\n\tsection_name=${section_name}"
		section_lines=-1
		continue
	fi
	if [ "${section_name}" == "[map]" ] ; then
		if [ "${lines[${c}]:0:6}" == "width=" ] ; then
			map_width="${lines[${c}]:6}"
			if [ "${map_width//[0123456789]}" != ""  ] ; then
				echo "ERROR specified map width invalid"
				exit 1
			fi
		fi
		if [ "${lines[${c}]:0:7}" == "height=" ] ; then
			map_height="${lines[${c}]:7}"
			if [ "${map_height//[0123456789]}" != ""  ] ; then
				echo "ERROR specified map height invalid"
				exit 1
			fi
		fi

		if [ "${lines[${c}]:0:1}" == "t" ] || [ "${lines[${c}]:0:1}" == "n" ] ; then
			if [ $(( ${#lines[${c}]} - 7 )) -ne "${map_width}" ] ; then
				echo "LINE ${c} WIDTH MISMATCH"
				exit 1
			fi
		fi

		if [[ "${lines[${c}]:0:4}" == t[0-9][0-9][0-9] ]] ; then
			terrain_layer[${#terrain_layer[*]+1}]="t0${lines[c]:1}"
		elif [[ "${lines[${c}]:0:4}" == n[0-9][0-9][0-9] ]] ; then
			e03_layer[${#e03_layer[*]+1}]="e03_0${lines[c]:1}"
		fi

		if [ "${lines[${c}]//[[:digit:]]}" == "rsx=" ] ; then
			temp="${lines[${c}]#r}" ; startpos_count="${temp%%s*}"
			startpos_x[${startpos_count}]="${lines[${c}]#*=}"
		elif [ "${lines[${c}]//[[:digit:]]}" == "rsy=" ] ; then
			temp="${lines[${c}]#r}" ; startpos_count="${temp%%s*}"
			startpos_y[${startpos_count}]="${lines[${c}]#*=}"
		fi
	fi
	if [ "${lines[${c}]}" != "" ] ; then
		echo "${lines[${c}]}"
	fi
done
echo -e "\tEND OF FILE"


echo ; echo ; echo
echo "NEW OUTPUT BELOW"
echo


# Output the terrain layer
for (( i=0 ; i<${#terrain_layer[*]} ; i++ )) ; do
	echo "${terrain_layer[${i}]}"
done

# Output start positions
echo "startpos_count=$(( ${startpos_count} + 1 ))"
echo "startpos={\"x\",\"y\",\"exclude\",\"nations\""
for (( i=0 ; i<=${startpos_count} ; i++ )) ; do
	tile="${terrain_layer[${startpos_y[${i}]}]:$(( ${startpos_x[${i}]} + 7 )):1}"
	if [ "${startpos_terrains}" == "${startpos_terrains//${tile}}" ] ; then
		echo " Bad startpos terrain choice? "
	fi
	echo -e "${startpos_x[${i}]},${startpos_y[${i}]},FALSE,\"\""
done
echo "}"

# Fake the e00, e01, e02 layers
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "e00_${zeroPad:${#i}}${i}${e03_layer[0]:8}"
done
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "e01_${zeroPad:${#i}}${i}${e03_layer[0]:8}"
done
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "e02_${zeroPad:${#i}}${i}${e03_layer[0]:8}"
done

# Output the real e03 layer (Rivers)
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "${e03_layer[${i}]}"
done

# Fake the Res layer
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	spaceline="${e03_layer[0]//0/ }"
	spaceline="${spaceline:8}"
	echo "res${zeroPad:${#i}}${i}${spaceline}"
done

echo

exit 0


# This part is not needed if copying to a Freeciv 2 scenario file
# Remove the exit 0 above it to enable it

# May be desirable for Freeciv 3
# Fake the e04, e05, e06, e07, e08 layers
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "e04_${zeroPad:${#i}}${i}\"${e03_layer[0]:8}\""
done
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "e05_${zeroPad:${#i}}${i}\"${e03_layer[0]:8}\""
done
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "e06_${zeroPad:${#i}}${i}\"${e03_layer[0]:8}\""
done
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "e07_${zeroPad:${#i}}${i}\"${e03_layer[0]:8}\""
done
for (( i=0 ; i<${#e03_layer[*]} ; i++ )) ; do
	echo "e08_${zeroPad:${#i}}${i}\"${e03_layer[0]:8}\""
done

echo

exit 0