FreeRDP/scripts/update-rdpSettings

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#!/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}"