projects/linux·blob v4.11-rc5 · refs

97 lines · 1.9 KiB

1#!/usr/bin/perl
2#
3# checkincludes: find/remove files included more than once
4#
5# Copyright abandoned, 2000, Niels Kristian Bech Jensen <[email protected]>.
6# Copyright 2009 Luis R. Rodriguez <[email protected]>
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
14use strict;
15
16sub usage {
17 print "Usage: checkincludes.pl [-r]\n";
18 print "By default we just warn of duplicates\n";
19 print "To remove duplicated includes in place use -r\n";
20 exit 1;
21}
22
23my $remove = 0;
24
25if ($#ARGV < 0) {
26 usage();
27}
28
29if ($#ARGV >= 1) {
30 if ($ARGV[0] =~ /^-/) {
31 if ($ARGV[0] eq "-r") {
32 $remove = 1;
33 shift;
34 } else {
35 usage();
36 }
37 }
38}
39
40my $dup_counter = 0;
41
42foreach my $file (@ARGV) {
43 open(my $f, '<', $file)
44 or die "Cannot open $file: $!.\n";
45
46 my %includedfiles = ();
47 my @file_lines = ();
48
49 while (<$f>) {
50 if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) {
51 ++$includedfiles{$1};
52 }
53 push(@file_lines, $_);
54 }
55
56 close($f);
57
58 if (!$remove) {
59 foreach my $filename (keys %includedfiles) {
60 if ($includedfiles{$filename} > 1) {
61 print "$file: $filename is included more than once.\n";
62 ++$dup_counter;
63 }
64 }
65 next;
66 }
67
68 open($f, '>', $file)
69 or die("Cannot write to $file: $!");
70
71 my $dups = 0;
72 foreach (@file_lines) {
73 if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) {
74 foreach my $filename (keys %includedfiles) {
75 if ($1 eq $filename) {
76 if ($includedfiles{$filename} > 1) {
77 $includedfiles{$filename}--;
78 $dups++;
79 ++$dup_counter;
80 } else {
81 print {$f} $_;
82 }
83 }
84 }
85 } else {
86 print {$f} $_;
87 }
88 }
89 if ($dups > 0) {
90 print "$file: removed $dups duplicate includes\n";
91 }
92 close($f);
93}
94
95if ($dup_counter == 0) {
96 print "No duplicate includes found.\n";
97}