update checkpatch.pl to version 0.04
This version brings a some new tests, and a host of changes to fix
false positives, of particular note:
- check for and report #if 0
- extend checking of line lengths and spacing for .pl, .sh etc
- extends the pointer type checks to multiple levels
- updates printk handling to track newlines
- adds a wrapped patch detector
- drops the leading component of the filenames
- extends switch indent handling to switch statmentes rooted in
the context
- adds foo * bar single pointer checks
This version of checkpatch.pl can be found at the following URL:
http://www.shadowen.org/~apw/public/checkpatch/checkpatch.pl-0.04
Full Changelog:
Andy Whitcroft (16):
allow checking line lengths and spacing on other source files
clean up that whitespace
sanitise the input line standardising the content of quotes
clean up pointer type * and space checks
fix up the sanitiser so it maintains the line length
apply the printk facility checks only to the first printk in a set
switch/case indent checks may anchor in the context
add a wrapped patch detector
put the #ifdef in C file checks on ice
asm volatile is acceptable
check for and report #if 0
drop the leading component of the filename as patches are -p1
use the original line when reporting operator errors
correct spelling of Joel's name
Version: 0.04
add support for struct foo * bar checks
Geert Uytterhoeven (1):
Fix checkpatch.pl name in usage template
Randy Dunlap (1):
checkpatch: produce fewer lines of output
Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Joel Schopp <jschopp@austin.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Whitcroft
Linus Torvalds
Родитель
c790923499
Коммит
00df344fd0
|
|
@ -1,14 +1,15 @@
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|||
#!/usr/bin/perl -w
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# (c) 2001, Dave Jones. <davej@codemonkey.org.uk> (the file handling bit)
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# (c) 2005, Joel Scohpp <jschopp@austin.ibm.com> (the ugly bit)
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# (c) 2005, Joel Schopp <jschopp@austin.ibm.com> (the ugly bit)
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# (c) 2007, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite, etc)
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# Licensed under the terms of the GNU GPL License version 2
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use strict;
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my $P = $0;
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$P =~ s@.*/@@g;
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my $V = '0.03';
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my $V = '0.04';
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use Getopt::Long qw(:config no_auto_abbrev);
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|
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@ -26,7 +27,7 @@ GetOptions(
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my $exit = 0;
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if ($#ARGV < 0) {
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print "usage: patchstylecheckemail.pl [options] patchfile\n";
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print "usage: $P [options] patchfile\n";
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print "version: $V\n";
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print "options: -q => quiet\n";
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print " --no-tree => run without a kernel tree\n";
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@ -59,15 +60,15 @@ if ($tree && -f $removal) {
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}
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}
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my @lines = ();
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my @rawlines = ();
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while (<>) {
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chomp;
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push(@lines, $_);
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push(@rawlines, $_);
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if (eof(ARGV)) {
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if (!process($ARGV, @lines)) {
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if (!process($ARGV, @rawlines)) {
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$exit = 1;
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}
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@lines = ();
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@rawlines = ();
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}
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}
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@ -118,24 +119,57 @@ sub line_stats {
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return (length($line), length($white));
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}
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sub sanitise_line {
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my ($line) = @_;
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my $res = '';
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my $l = '';
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my $quote = '';
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foreach my $c (split(//, $line)) {
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if ($l ne "\\" && ($c eq "'" || $c eq '"')) {
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if ($quote eq '') {
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$quote = $c;
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$res .= $c;
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$l = $c;
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next;
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} elsif ($quote eq $c) {
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$quote = '';
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}
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}
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if ($quote && $c ne "\t") {
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$res .= "X";
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} else {
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$res .= $c;
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}
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$l = $c;
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}
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return $res;
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}
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sub ctx_block_get {
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my ($linenr, $remain, $outer) = @_;
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my $line;
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my $start = $linenr - 1;
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my $end = $linenr - 1 + $remain;
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my $blk = '';
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my @o;
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my @c;
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my @res = ();
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for ($line = $start; $line < $end; $line++) {
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$blk .= $lines[$line];
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for ($line = $start; $remain > 0; $line++) {
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next if ($rawlines[$line] =~ /^-/);
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$remain--;
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$blk .= $rawlines[$line];
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@o = ($blk =~ /\{/g);
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@c = ($blk =~ /\}/g);
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if (!$outer || (scalar(@o) - scalar(@c)) == 1) {
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push(@res, $lines[$line]);
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push(@res, $rawlines[$line]);
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}
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last if (scalar(@o) == scalar(@c));
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@ -158,7 +192,7 @@ sub ctx_locate_comment {
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my ($first_line, $end_line) = @_;
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# Catch a comment on the end of the line itself.
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my ($current_comment) = ($lines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*$@);
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my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*$@);
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return $current_comment if (defined $current_comment);
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# Look through the context and try and figure out if there is a
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@ -166,8 +200,8 @@ sub ctx_locate_comment {
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my $in_comment = 0;
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$current_comment = '';
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for (my $linenr = $first_line; $linenr < $end_line; $linenr++) {
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my $line = $lines[$linenr - 1];
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##warn " $line\n";
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my $line = $rawlines[$linenr - 1];
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#warn " $line\n";
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if ($linenr == $first_line and $line =~ m@^.\s*\*@) {
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$in_comment = 1;
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}
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@ -190,7 +224,7 @@ sub ctx_has_comment {
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my ($first_line, $end_line) = @_;
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my $cmt = ctx_locate_comment($first_line, $end_line);
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##print "LINE: $lines[$end_line - 1 ]\n";
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##print "LINE: $rawlines[$end_line - 1 ]\n";
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##print "CMMT: $cmt\n";
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return ($cmt ne '');
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@ -205,10 +239,6 @@ sub cat_vet {
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return $vet;
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}
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sub has_non_quoted {
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return ($_[0] =~ m{$_[1]} and $_[0] !~ m{\".*$_[1].*\"});
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}
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sub process {
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my $filename = shift;
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my @lines = @_;
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@ -240,6 +270,7 @@ sub process {
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#extract the filename as it passes
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if ($line=~/^\+\+\+\s+(\S+)/) {
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$realfile=$1;
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$realfile =~ s@^[^/]*/@@;
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$in_comment = 0;
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next;
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}
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@ -262,7 +293,6 @@ sub process {
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# blank context lines so we need to count that too.
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if ($line =~ /^( |\+|$)/) {
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$realline++;
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$realcnt-- if ($realcnt != 0);
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|
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# track any sort of multi-line comment. Obviously if
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# the added text or context do not include the whole
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@ -288,11 +318,13 @@ sub process {
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($prevline, $stashline) = ($stashline, $line);
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($previndent, $stashindent) = ($stashindent, $indent);
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}
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$realcnt-- if ($realcnt != 0);
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|
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#make up the handle for any error we report on this line
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$here = "#$linenr: ";
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$here .= "FILE: $realfile:$realline:" if ($realcnt != 0);
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my $hereline = "$here\n$line\n";
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my $herecurr = "$here\n$line\n\n";
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my $hereprev = "$here\n$prevline\n$line\n\n";
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@ -315,21 +347,28 @@ sub process {
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}
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}
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#ignore lines not being added
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if ($line=~/^[^\+]/) {next;}
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# Check for wrappage within a valid hunk of the file
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if ($realcnt != 0 && $line !~ m{^(?:\+|-| |$)}) {
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print "patch seems to be corrupt (line wrapped?) [$realcnt]\n";
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print "$herecurr";
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$clean = 0;
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}
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# check we are in a valid source file *.[hcsS] if not then ignore this hunk
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next if ($realfile !~ /\.[hcsS]$/);
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#ignore lines being removed
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if ($line=~/^-/) {next;}
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# check we are in a valid source file if not then ignore this hunk
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next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);
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#trailing whitespace
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if ($line=~/\S\s+$/) {
|
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if ($line=~/\+.*\S\s+$/) {
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my $herevet = "$here\n" . cat_vet($line) . "\n\n";
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print "trailing whitespace\n";
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print "$herevet";
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$clean = 0;
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}
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#80 column limit
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if (!($prevline=~/\/\*\*/) && $length > 80) {
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if ($line =~ /^\+/ && !($prevline=~/\/\*\*/) && $length > 80) {
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print "line over 80 characters\n";
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print "$herecurr";
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$clean = 0;
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@ -353,19 +392,59 @@ sub process {
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#
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next if ($in_comment);
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# no C99 // comments
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if (has_non_quoted($line, '//')) {
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print "do not use C99 // comments\n";
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print "$herecurr";
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$clean = 0;
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}
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|
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# Remove comments from the line before processing.
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$line =~ s@/\*.*\*/@@g;
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$line =~ s@/\*.*@@;
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$line =~ s@.*\*/@@;
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#
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# Checks which may be anchored in the context.
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#
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# Check for switch () and associated case and default
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# statements should be at the same indent.
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if ($line=~/\bswitch\s*\(.*\)/) {
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my $err = '';
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my $sep = '';
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my @ctx = ctx_block_outer($linenr, $realcnt);
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shift(@ctx);
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for my $ctx (@ctx) {
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my ($clen, $cindent) = line_stats($ctx);
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if ($ctx =~ /^\+\s*(case\s+|default:)/ &&
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$indent != $cindent) {
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$err .= "$sep$ctx\n";
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$sep = '';
|
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} else {
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$sep = "[...]\n";
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}
|
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}
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if ($err ne '') {
|
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print "switch and case should be at the same indent\n";
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print "$here\n$line\n$err\n";
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$clean = 0;
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}
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}
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#ignore lines not being added
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if ($line=~/^[^\+]/) {next;}
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#
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# Checks which are anchored on the added line.
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#
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# no C99 // comments
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if ($line =~ m{//}) {
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print "do not use C99 // comments\n";
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print "$herecurr";
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$clean = 0;
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}
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# Remove C99 comments.
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$line =~ s@//.*@@;
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|
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# Standardise the strings and chars within the input
|
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# to simplify matching.
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$line = sanitise_line($line);
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#EXPORT_SYMBOL should immediately follow its function closing }.
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if (($line =~ /EXPORT_SYMBOL.*\(.*\)/) ||
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($line =~ /EXPORT_UNUSED_SYMBOL.*\(.*\)/)) {
|
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|
|
@ -393,8 +472,28 @@ sub process {
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}
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# * goes on variable not on type
|
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if ($line=~/[A-Za-z\d_]+\* [A-Za-z\d_]+/) {
|
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print "\"foo* bar\" should be \"foo *bar\"\n";
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my $type = '(?:char|short|int|long|unsigned|float|double|' .
|
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'struct\s+[A-Za-z\d_]+|' .
|
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'union\s+[A-Za-z\d_]+)';
|
||||
|
||||
if ($line =~ m{[A-Za-z\d_]+(\*+) [A-Za-z\d_]+}) {
|
||||
print "\"foo$1 bar\" should be \"foo $1bar\"\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
}
|
||||
if ($line =~ m{$type (\*) [A-Za-z\d_]+} ||
|
||||
$line =~ m{[A-Za-z\d_]+ (\*\*+) [A-Za-z\d_]+}) {
|
||||
print "\"foo $1 bar\" should be \"foo $1bar\"\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
}
|
||||
if ($line =~ m{\([A-Za-z\d_\s]+[A-Za-z\d_](\*+)\)}) {
|
||||
print "\"(foo$1)\" should be \"(foo $1)\"\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
}
|
||||
if ($line =~ m{\([A-Za-z\d_\s]+[A-Za-z\d_]\s+(\*+)\s+\)}) {
|
||||
print "\"(foo $1 )\" should be \"(foo $1)\"\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
}
|
||||
|
|
@ -406,11 +505,29 @@ sub process {
|
|||
# $clean = 0;
|
||||
# }
|
||||
|
||||
# printk should use KERN_* levels
|
||||
# printk should use KERN_* levels. Note that follow on printk's on the
|
||||
# same line do not need a level, so we use the current block context
|
||||
# to try and find and validate the current printk. In summary the current
|
||||
# printk includes all preceeding printk's which have no newline on the end.
|
||||
# we assume the first bad printk is the one to report.
|
||||
if ($line =~ /\bprintk\((?!KERN_)/) {
|
||||
print "printk() should include KERN_ facility level\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
my $ok = 0;
|
||||
for (my $ln = $linenr - 1; $ln >= $first_line; $ln--) {
|
||||
#print "CHECK<$lines[$ln - 1]\n";
|
||||
# we have a preceeding printk if it ends
|
||||
# with "\n" ignore it, else it is to blame
|
||||
if ($lines[$ln - 1] =~ m{\bprintk\(}) {
|
||||
if ($rawlines[$ln - 1] !~ m{\\n"}) {
|
||||
$ok = 1;
|
||||
}
|
||||
last;
|
||||
}
|
||||
}
|
||||
if ($ok == 0) {
|
||||
print "printk() should include KERN_ facility level\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
}
|
||||
}
|
||||
|
||||
#function brace can't be on same line, except for #defines of do while, or if closed on same line
|
||||
|
|
@ -425,11 +542,11 @@ sub process {
|
|||
# will therefore also expand that way.
|
||||
my $opline = $line;
|
||||
$opline = expand_tabs($opline);
|
||||
$opline =~ s/^.//;
|
||||
$opline =~ s/^./ /;
|
||||
if (!($line=~/\#\s*include/)) {
|
||||
# Check operator spacing.
|
||||
my @elements = split(/(<<=|>>=|<=|>=|==|!=|\+=|-=|\*=|\/=|%=|\^=|\|=|&=|->|<<|>>|<|>|=|!|~|&&|\|\||,|\^|\+\+|--|;|&|\||\+|-|\*|\/\/|\/)/, $opline);
|
||||
my $off = 1;
|
||||
my $off = 0;
|
||||
for (my $n = 0; $n < $#elements; $n += 2) {
|
||||
$off += length($elements[$n]);
|
||||
|
||||
|
|
@ -452,16 +569,21 @@ sub process {
|
|||
$c = 'E';
|
||||
}
|
||||
|
||||
# Pick up the preceeding and succeeding characters.
|
||||
my $ca = substr($opline, $off - 1, 1);
|
||||
my $cc = '';
|
||||
if (length($opline) > ($off + length($elements[$n]))) {
|
||||
$cc = substr($opline, $off + 1 + length($elements[$n]), 1);
|
||||
}
|
||||
|
||||
my $ctx = "${a}x${c}";
|
||||
|
||||
my $at = "(ctx:$ctx)";
|
||||
|
||||
my $ptr = (" " x $off) . "^";
|
||||
my $hereptr = "$here\n$line\n$ptr\n\n";
|
||||
my $hereptr = "$hereline$ptr\n\n";
|
||||
|
||||
##print "<$s1:$op:$s2> <$elements[$n]:$elements[$n + 1]:$elements[$n + 2]>\n";
|
||||
# Skip things apparently in quotes.
|
||||
next if ($line=~/\".*\Q$op\E.*\"/ or $line=~/\'\Q$op\E\'/);
|
||||
|
||||
# We need ; as an operator. // is a comment.
|
||||
if ($op eq ';' or $op eq '//') {
|
||||
|
|
@ -515,20 +637,26 @@ sub process {
|
|||
#
|
||||
# - is the same
|
||||
#
|
||||
# * is the same only adding:
|
||||
# type:
|
||||
# (foo *)
|
||||
# (foo **)
|
||||
#
|
||||
} elsif ($op eq '&' or $op eq '-') {
|
||||
if ($ctx !~ /VxV|[EWB]x[WE]|[EWB]x[VO]/) {
|
||||
if ($ctx !~ /VxV|[EW]x[WE]|[EWB]x[VO]/) {
|
||||
print "need space before that '$op' $at\n";
|
||||
print "$hereptr";
|
||||
$clean = 0;
|
||||
}
|
||||
|
||||
# * is the same as & only adding:
|
||||
# type:
|
||||
# (foo *)
|
||||
# (foo **)
|
||||
#
|
||||
} elsif ($op eq '*') {
|
||||
if ($ctx !~ /VxV|[EWB]x[WE]|[EWB]x[VO]|[EWO]x[OBV]/) {
|
||||
if ($ca eq '*') {
|
||||
if ($cc =~ /\s/) {
|
||||
print "no space after that '$op' $at\n";
|
||||
print "$hereptr";
|
||||
$clean = 0;
|
||||
}
|
||||
} elsif ($ctx !~ /VxV|[EW]x[WE]|[EWB]x[VO]|OxV|WxB/) {
|
||||
print "need space before that '$op' $at\n";
|
||||
print "$hereptr";
|
||||
$clean = 0;
|
||||
|
|
@ -578,6 +706,7 @@ sub process {
|
|||
|
||||
# Check for illegal assignment in if conditional.
|
||||
if ($line=~/\b(if|while)\s*\(.*[^<>!=]=[^=].*\)/) {
|
||||
#next if ($line=~/\".*\Q$op\E.*\"/ or $line=~/\'\Q$op\E\'/);
|
||||
print "do not use assignment in condition\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
|
|
@ -592,30 +721,6 @@ sub process {
|
|||
$clean = 0;
|
||||
}
|
||||
|
||||
# Check for switch () and associated case and default
|
||||
# statements should be at the same indent.
|
||||
if ($line=~/\bswitch\s*\(.*\)/) {
|
||||
my $err = '';
|
||||
my $sep = '';
|
||||
my @ctx = ctx_block_outer($linenr, $realcnt);
|
||||
shift(@ctx);
|
||||
for my $ctx (@ctx) {
|
||||
my ($clen, $cindent) = line_stats($ctx);
|
||||
if ($ctx =~ /\s*(case\s+|default:)/ &&
|
||||
$indent != $cindent) {
|
||||
$err .= "$sep$ctx\n";
|
||||
$sep = '';
|
||||
} else {
|
||||
$sep = "[...]\n";
|
||||
}
|
||||
}
|
||||
if ($err ne '') {
|
||||
print "switch and case should be at the same indent\n";
|
||||
print "$here\n$line\n$err\n";
|
||||
$clean = 0;
|
||||
}
|
||||
}
|
||||
|
||||
#studly caps, commented out until figure out how to distinguish between use of existing and adding new
|
||||
# if (($line=~/[\w_][a-z\d]+[A-Z]/) and !($line=~/print/)) {
|
||||
# print "No studly caps, use _\n";
|
||||
|
|
@ -645,12 +750,12 @@ sub process {
|
|||
my @opened = $prevline=~/\(/g;
|
||||
my @closed = $prevline=~/\)/g;
|
||||
my $nr_line = $linenr;
|
||||
my $remaining = $realcnt;
|
||||
my $remaining = $realcnt - 1;
|
||||
my $next_line = $line;
|
||||
my $extra_lines = 0;
|
||||
my $display_segment = $prevline;
|
||||
|
||||
while ($remaining > 1 && scalar @opened > scalar @closed) {
|
||||
while ($remaining > 0 && scalar @opened > scalar @closed) {
|
||||
$prevline .= $next_line;
|
||||
$display_segment .= "\n" . $next_line;
|
||||
$next_line = $lines[$nr_line];
|
||||
|
|
@ -689,7 +794,7 @@ sub process {
|
|||
|
||||
# don't use deprecated functions
|
||||
for my $func (@dep_functions) {
|
||||
if (has_non_quoted($line, '\b' . $func . '\b')) {
|
||||
if ($line =~ /\b$func\b/) {
|
||||
print "Don't use $func(): see Documentation/feature-removal-schedule.txt\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
|
|
@ -697,19 +802,26 @@ sub process {
|
|||
}
|
||||
|
||||
# no volatiles please
|
||||
if (has_non_quoted($line, '\bvolatile\b')) {
|
||||
if ($line =~ /\bvolatile\b/ && $line !~ /\basm\s+volatile\b/) {
|
||||
print "Use of volatile is usually wrong: see Documentation/volatile-considered-harmful.txt\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
}
|
||||
|
||||
# warn about #ifdefs in C files
|
||||
if ($line =~ /^.#\s*if(|n)def/ && ($realfile =~ /\.c$/)) {
|
||||
print "#ifdef in C files should be avoided\n";
|
||||
# warn about #if 0
|
||||
if ($line =~ /^.#\s*if\s+0\b/) {
|
||||
print "#if 0 -- if this code redundant remove it\n";
|
||||
print "$herecurr";
|
||||
$clean = 0;
|
||||
}
|
||||
|
||||
# warn about #ifdefs in C files
|
||||
# if ($line =~ /^.#\s*if(|n)def/ && ($realfile =~ /\.c$/)) {
|
||||
# print "#ifdef in C files should be avoided\n";
|
||||
# print "$herecurr";
|
||||
# $clean = 0;
|
||||
# }
|
||||
|
||||
# check for spinlock_t definitions without a comment.
|
||||
if ($line =~ /^.\s*(struct\s+mutex|spinlock_t)\s+\S+;/) {
|
||||
my $which = $1;
|
||||
|
|
|
|||
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