checkincludes: fix perlcritic warnings

Turn on strict checking.
Use local file handles.
Use three argument open.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Cc: Cong Wang <amwang@redhat.com>
Cc: Michal Marek <mmarek@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

diff --git a/scripts/checkincludes.pl b/scripts/checkincludes.pl
index 676ddc0..97b2c61 100755 (executable)
--- a/scripts/checkincludes.pl
+++ b/scripts/checkincludes.pl
@@ -11,6 +11,8 @@
 # you do have real dups and do not have them under #ifdef's. You
 # could also just review the results.
 
+use strict;
+
 sub usage {
        print "Usage: checkincludes.pl [-r]\n";
        print "By default we just warn of duplicates\n";
@@ -35,23 +37,24 @@ if ($#ARGV >= 1) {
        }
 }
 
-foreach $file (@ARGV) {
-       open(FILE, $file) or die "Cannot open $file: $!.\n";
+foreach my $file (@ARGV) {
+       open(my $f, '<', $file)
+           or die "Cannot open $file: $!.\n";
 
        my %includedfiles = ();
        my @file_lines = ();
 
-       while (<FILE>) {
+       while (<$f>) {
                if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) {
                        ++$includedfiles{$1};
                }
                push(@file_lines, $_);
        }
 
-       close(FILE);
+       close($f);
 
        if (!$remove) {
-               foreach $filename (keys %includedfiles) {
+               foreach my $filename (keys %includedfiles) {
                        if ($includedfiles{$filename} > 1) {
                                print "$file: $filename is included more than once.\n";
                        }
@@ -59,27 +62,28 @@ foreach $file (@ARGV) {
                next;
        }
 
-       open(FILE,">$file") || die("Cannot write to $file: $!");
+       open($f, '>', $file)
+           or die("Cannot write to $file: $!");
 
        my $dups = 0;
        foreach (@file_lines) {
                if (m/^\s*#\s*include\s*[<"](\S*)[>"]/o) {
-                       foreach $filename (keys %includedfiles) {
+                       foreach my $filename (keys %includedfiles) {
                                if ($1 eq $filename) {
                                        if ($includedfiles{$filename} > 1) {
                                                $includedfiles{$filename}--;
                                                $dups++;
                                        } else {
-                                               print FILE $_;
+                                               print {$f} $_;
                                        }
                                }
                        }
                } else {
-                       print FILE $_;
+                       print {$f} $_;
                }
        }
        if ($dups > 0) {
                print "$file: removed $dups duplicate includes\n";
        }
-       close(FILE);
+       close($f);
 }