openssl/util/merge-err-lines

#! /usr/bin/env perl
# Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
#
# Licensed under the Apache License 2.0 (the "License").  You may not use
# this file except in compliance with the License.  You can obtain a copy
# in the file LICENSE in the source distribution or at
# https://www.openssl.org/source/license.html

# Sometimes calls to XXXerr() are split into two lines, because the define'd
# names are very long.  This script looks for those lines and merges them.
# It should be run before the "err-to-raise" script.

# Run this program like this:
#       perl -pi util/merge-err-lines files...
# or
#       git grep -l '[A-Z0-9]err([^)]*$' | xargs perl -pi util/merge-err-lines

use strict;
use warnings;

# Look for "{whitespace}XXXerr(no-close-paren{WHITESPACE}" lines
if ( /^ *[_A-Z0-9]+err\([^)]+ *$/ ) {
    my $copy = $_;
    chop($copy);
    $copy =~ s/ +$//;
    my $next = <>;
    $next =~ s/^ +//;
    $_ = $copy . ' ' . $next;
}