1 #!/usr/bin/env perl 2 # SPDX-License-Identifier: GPL-2.0 3 # 4 # checkincludes: find/remove files included more than once 5 # 6 # Copyright abandoned, 2000, Niels Kristian Bech Jensen <nkbj@image.dk>. 7 # Copyright 2009 Luis R. Rodriguez <mcgrof@gmail.com> 8 # 9 # This script checks for duplicate includes. It also has support 10 # to remove them in place. Note that this will not take into 11 # consideration macros so you should run this only if you know 12 # you do have real dups and do not have them under #ifdef's. You 13 # could also just review the results. 14 15 use strict; 16 17 sub usage { 18 print "Usage: checkincludes.pl [-r]\n"; 19 print "By default we just warn of duplicates\n"; 20 print "To remove duplicated includes in place use -r\n"; 21 exit 1; 22 } 23 24 my $remove = 0; 25 26 if ($#ARGV < 0) { 27 usage(); 28 } 29 30 if ($#ARGV >= 1) { 31 if ($ARGV[0] =~ /^-/) { 32 if ($ARGV[0] eq "-r") { 33 $remove = 1; 34 shift; 35 } else { 36 usage(); 37 } 38 } 39 } 40 41 my $dup_counter = 0; 42 43 foreach my $file (@ARGV) { 44 open(my $f, '<', $file) 45 or die "Cannot open $file: $!.\n"; 46 47 my %includedfiles = (); 48 my @file_lines = (); 49 50 while (<$f>) { 51 if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) { 52 ++$includedfiles{$1}; 53 } 54 push(@file_lines, $_); 55 } 56 57 close($f); 58 59 if (!$remove) { 60 foreach my $filename (keys %includedfiles) { 61 if ($includedfiles{$filename} > 1) { 62 print "$file: $filename is included more than once.\n"; 63 ++$dup_counter; 64 } 65 } 66 next; 67 } 68 69 open($f, '>', $file) 70 or die("Cannot write to $file: $!"); 71 72 my $dups = 0; 73 foreach (@file_lines) { 74 if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) { 75 foreach my $filename (keys %includedfiles) { 76 if ($1 eq $filename) { 77 if ($includedfiles{$filename} > 1) { 78 $includedfiles{$filename}--; 79 $dups++; 80 ++$dup_counter; 81 } else { 82 print {$f} $_; 83 } 84 } 85 } 86 } else { 87 print {$f} $_; 88 } 89 } 90 if ($dups > 0) { 91 print "$file: removed $dups duplicate includes\n"; 92 } 93 close($f); 94 } 95 96 if ($dup_counter == 0) { 97 print "No duplicate includes found.\n"; 98 } 99