[PATCH] checkpatch: Allow control over line length warning, default remains 80

Joe Perches
2012-11-20T20:57:33Z

Some projects might want a longer line length so allow
a command line --max-line-length=n control over the
long line warnings. The default line length is 80.

Signed-off-by: Joe Perches <joe@perches.com>
---
scripts/checkpatch.pl | 9 ++++++---
1 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d2d5ba1..38e8890 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -33,6 +33,7 @@ my %ignore_type = ();
my @ignore = ();
my $help = 0;
my $configuration_file = ".checkpatch.conf";
+my $max_line_length = 80;

sub help {
my ($exitcode) = @_;
@@ -51,6 +52,7 @@ Options:
-f, --file treat FILE as regular source file
--subjective, --strict enable more subjective tests
--ignore TYPE(,TYPE2...) ignore various comma separated message types
+ --max-line-length=n set the maximum line length, if exceeded, warn
--show-types show the message "types" in the output
--root=PATH PATH to the kernel tree root
--no-summary suppress the per-file summary
@@ -107,6 +109,7 @@ GetOptions(
'strict!' => \$check,
'ignore=s' => \@ignore,
'show-types!' => \$show_types,
+ 'max-line-length=i' => \$max_line_length,
'root=s' => \$root,
'summary!' => \$summary,
'mailback!' => \$mailback,
@@ -1760,15 +1763,15 @@ sub process {
# check we are in a valid source file if not then ignore this hunk
next if ($realfile !~ /\.(h|c|s|S|pl|sh)$/);

-#80 column limit
+#line length limit
if ($line =~ /^\+/ && $prevrawline !~ /\/\*\*/ &&
$rawline !~ /^.\s*\*\s*\@$Ident\s/ &&
!($line =~ /^\+\s*$logFunctions\s*\(\s*(?:(KERN_\S+\s*|[^"]*))?"[X\t]*"\s*(?:|,|\)\s*;)\s*$/ ||
$line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) &&
- $length > 80)
+ $length > $max_line_length)
{
WARN("LONG_LINE",
- "line over 80 characters\n" . $herecurr);
+ "line over $max_line_length characters\n" . $herecurr);
}

# Check for user-visible strings broken across lines, which breaks the ability