Root/scripts/checkincludes.pl

1#!/usr/bin/perl
2#
3# checkincludes: find/remove files included more than once
4#
5# Copyright abandoned, 2000, Niels Kristian Bech Jensen <nkbj@image.dk>.
6# Copyright 2009 Luis R. Rodriguez <mcgrof@gmail.com>
7#
8# This script checks for duplicate includes. It also has support
9# to remove them in place. Note that this will not take into
10# consideration macros so you should run this only if you know
11# you do have real dups and do not have them under #ifdef's. You
12# could also just review the results.
13
14sub usage {
15    print "Usage: checkincludes.pl [-r]\n";
16    print "By default we just warn of duplicates\n";
17    print "To remove duplicated includes in place use -r\n";
18    exit 1;
19}
20
21my $remove = 0;
22
23if ($#ARGV < 0) {
24    usage();
25}
26
27if ($#ARGV >= 1) {
28    if ($ARGV[0] =~ /^-/) {
29        if ($ARGV[0] eq "-r") {
30            $remove = 1;
31            shift;
32        } else {
33            usage();
34        }
35    }
36}
37
38foreach $file (@ARGV) {
39    open(FILE, $file) or die "Cannot open $file: $!.\n";
40
41    my %includedfiles = ();
42    my @file_lines = ();
43
44    while (<FILE>) {
45        if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) {
46            ++$includedfiles{$1};
47        }
48        push(@file_lines, $_);
49    }
50
51    close(FILE);
52
53    if (!$remove) {
54        foreach $filename (keys %includedfiles) {
55            if ($includedfiles{$filename} > 1) {
56                print "$file: $filename is included more than once.\n";
57            }
58        }
59        next;
60    }
61
62    open(FILE,">$file") || die("Cannot write to $file: $!");
63
64    my $dups = 0;
65    foreach (@file_lines) {
66        if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) {
67            foreach $filename (keys %includedfiles) {
68                if ($1 eq $filename) {
69                    if ($includedfiles{$filename} > 1) {
70                        $includedfiles{$filename}--;
71                        $dups++;
72                    } else {
73                        print FILE $_;
74                    }
75                }
76            }
77        } else {
78            print FILE $_;
79        }
80    }
81    if ($dups > 0) {
82        print "$file: removed $dups duplicate includes\n";
83    }
84    close(FILE);
85}
86

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