#!/bin/bash

#

# This scripts reads include/freerdp/settings.h and scans the

# rdp_settings structure for all the fields until the /END of ABI

# stable zone/ comment.	 It then generates a set of #define one per

# non-padding field, valued as the index of the field, taking into

# account padding fields.  These field #defines are updated in that

# same file.

#

# Usage:

#

#	 cd $freerdp_source_directory

#	 scripts/update-rdpSettings

set -eu

srcroot=$(dirname $(dirname "${BASH_SOURCE[0]}"))

srcroot=$(realpath "${srcroot}")

file="${srcroot}/include/freerdp/settings.h"

(

	set -eu

	head='This is generated with a script parsing the rdpSettings data structure'

	tail='FreeRDP Settings Data Structure'

	sed -n -e "1,/${head}/p" < "${file}"

	printf ' */\n\n'

	(

		set -eu

		i=0

		sed -e '1,/struct rdp_settings/d' -e '/^{/d' -e '/};/,$d' \

			| sed -e '/End of ABI stable zone/,$d' \

			| sed -e '$a\

x*/' \

			| tr -d '\012' \

			| sed -e  's-/\*\([^*]\|\*[^/]\)*\*/--g' -e 's/[ 	][ 	]*/ /g' \

			| tr ';' '\012' \

			| sed -e 's/^[ 	]*\([A-Za-z_][A-Za-z_0-9]*[* 	]*\)*[* 	]\([A-Za-z_][A-Za-z_0-9]*\)/\2/' \

			      -e 's/padding[0-9]*[ 	]*\[\(.*\)\]/$((\1))/' \

			| while read line ; do

			case "$line" in

			(*-*)	i=$(( i + $(eval echo "$line") )) ;;

			(*)	printf '#define FreeRDP_%-50s (%4d)\n' "$line" "$i" ; i=$(( i + 1 )) ;;

			esac

		done

	) < "${file}"

	printf '\n\n/**\n'

	sed -n -e '/'"$tail"'/,$p' < "${file}"

) > "${file}.new" \

	&& cp -v "${file}" "${file}.old" \

	&& mv -v "${file}.new" "${file}"