#!/bin/bash

#
# This file is part of the LibreOffice project.
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
#
# This file incorporates work covered by the following license notice:
#
#   Licensed to the Apache Software Foundation (ASF) under one or more
#   contributor license agreements. See the NOTICE file distributed
#   with this work for additional information regarding copyright
#   ownership. The ASF licenses this file to you under the Apache
#   License, Version 2.0 (the "License"); you may not use this file
#   except in compliance with the License. You may obtain a copy of
#   the License at http://www.apache.org/licenses/LICENSE-2.0 .
#

# This script is needed in the process of generating exported
# symbols list out of map files on MinGW
# The magic generating the regular expression from the temporary
# mapfile containing only star and question mark symbols
#
# The script has to be called as follows:
# nm -gx <file>.o | addsym-mingw.sh <file-with-wildcard-symbols> <temporary-file-where-to-write-the-search-expression-to>
# See tg_shl.mk for an example of how to use the script
#
# Replace every * with .* and every ? with . to get awk expression
# Remove whitespaces and comments in expression
# Put ^ at the beginning of every expression
# Put $ at the beginning of every expression
# Connect them all on one line, separated by |
# Remove | at the end of this regular expression because the last end
# of line was also replaced by |

if [ -s $1 ]
then
cat $1 | sed 's#*#.*#g
s#?#.#g
s#;.*##g
s# ##g
s#  ##g
s#^#^#
s#$#$#' | tr '\n' '|' | sed "s#|\$##" >$2

# Please note that the awk expression expects to get the output of 'nm -gP'!
awk -v SYMBOLSREGEXP="`cat $2`" '
match (substr ($1,2) ,SYMBOLSREGEXP) > 0 { print substr ($1,2) ";" }'
fi