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#!/usr/bin/env perl
# Copyright (C) 2016 Intel Corporation.
# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only

use strict;
my $syntax = "findclasslist.pl\n" .
             "Replaces each \@FILE:filename\@ in stdin with the classes found in that file\n";

# Match a struct or class declaration at the top-level, but not a forward
# declaration
my $classmatch = qr/^(?:struct|class)(?:\s+Q_\w*_EXPORT)?\s+(\w+)(\s*;$)?/;

# Match an exported namespace
my $nsmatch = qr/^namespace\s+Q_\w+_EXPORT\s+(\w+)/;

$\ = $/;
while (<STDIN>) {
    chomp;
    unless (/\@FILE:(.*)\@/) {
        print;
        next;
    }

    # Replace this line with the class list
    open HDR, "<$1" or die("Could not open header $1: $!");
    my $comment = "    /* $1 */";
    while (my $line = <HDR>) {
        if ($line =~ /\bELFVERSION:(\S+)\b/) {
            last if $1 eq "stop";
            <HDR> if $1 eq "ignore-next"; # load next line
            next if $1 eq "ignore" or $1 eq "ignore-next";
        }

        $line =~ s,\s*(//.*)?$,,;  # remove // comments and trailing space
        next unless $line =~ $nsmatch or $line =~ $classmatch;
        next if $2 ne "";       # forward declaration

        printf "    *%d%s*;\n", length $1, $1;
        $comment = 0;
    }
    close HDR;
}