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#!/usr/bin/env perl

#
# %CopyrightBegin%
# 
# Copyright Ericsson AB 2018. All Rights Reserved.
# 
# Licensed 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
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
# 
# %CopyrightEnd%
#

#
# Replaces runtime_dependencies pointing to future not yet
# resolved versions in the maint and master branches while under
# development. Such dependencies may exist in .app files on the
# form (<app name>-@<ticket>(:<ticket>)*@) and will be replaced
# with the current version of the application in the source tree.
# This in order not to break tests looking at runtime_dependencies.
#

use strict;
use File::Basename;

my $usage_text = <<"HERE";
  usage: $0 <ERL_TOP>
HERE

my %app_vsn;
my $exit_status = 0;

@ARGV == 1 or die $usage_text;
my $erl_top = shift @ARGV;

chdir $erl_top or die "Failed to change directory into '$erl_top'";

print "Fixup of development runtime dependencies\n";

#
# Determine versions of all applications in the source tree...
#
foreach my $vsn_mk (<lib/*/vsn.mk>, <erts/vsn.mk>) {
    my $app_dir = dirname($vsn_mk);
    my $app = basename($app_dir);

    if (!open(VSN, $vsn_mk)) {
        $exit_status = 1;
        print STDERR "ERROR: Failed to open '$vsn_mk' for reading: $!\n";
    }
    else {
	my $vsn = '';
	while (<VSN>) {
	    if (/VSN\s*=\s*(\S+)/) {
		$vsn = $1;
		last;
	    }
	}
	close VSN;
        if (!$vsn) {
            $exit_status = 1;
            print STDERR "ERROR: No version found in '$vsn_mk'\n"
        }
        else {
            $app_vsn{$app} = "$app-$vsn";
        }
    }
}

my $valid_apps = join('|', keys %app_vsn);

#
# Replace all <app name>-@<ticket>(:<ticket>)*@ versions
# in all *.app files with the versions currently used...
#
foreach my $app_file (<lib/*/ebin/*.app>, <erts/preloaded/ebin/erts.app>) {
    if (!open(IN, "<", $app_file)) {
        $exit_status = 1;
        print STDERR "ERROR: Failed to open '$app_file' for reading: $!";
    }
    else {
        local $/;
        my $file = <IN>;
        close IN;
        my $old_file = $file;

        $file =~ s/($valid_apps)-\@OTP-\d{4,5}(?::OTP-\d{4,5})*\@/$app_vsn{$1}/g;

        if ($file ne $old_file) {
            if (!open(OUT, ">", $app_file)) {
                $exit_status = 1;
                print STDERR "ERROR: Failed to open '$app_file' for writing: $!";
            }
            else {
                print OUT $file;
                close OUT;
            }
        }
    }
}

exit $exit_status;