scripts: Make cleanfile/cleanpatch warn about long lines
Make the "cleanfile" and "cleanpatch" script warn about long lines,
by default lines whose visual width exceeds 79 characters.
Per suggestion from Auke Kok.
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
diff --git a/scripts/cleanpatch b/scripts/cleanpatch
index a53f987..9680d03 100755
--- a/scripts/cleanpatch
+++ b/scripts/cleanpatch
@@ -7,7 +7,9 @@
use bytes;
use File::Basename;
-#
+# Default options
+$max_width = 79;
+
# Clean up space-tab sequences, either by removing spaces or
# replacing them with tabs.
sub clean_space_tabs($)
@@ -48,9 +50,49 @@
return $lo;
}
+# Compute the visual width of a string
+sub strwidth($) {
+ no bytes; # Tab alignment depends on characters
+
+ my($li) = @_;
+ my($c, $i);
+ my $pos = 0;
+ my $mlen = 0;
+
+ for ($i = 0; $i < length($li); $i++) {
+ $c = substr($li,$i,1);
+ if ($c eq "\t") {
+ $pos = ($pos+8) & ~7;
+ } elsif ($c eq "\n") {
+ $mlen = $pos if ($pos > $mlen);
+ $pos = 0;
+ } else {
+ $pos++;
+ }
+ }
+
+ $mlen = $pos if ($pos > $mlen);
+ return $mlen;
+}
+
$name = basename($0);
-foreach $f ( @ARGV ) {
+@files = ();
+
+while (defined($a = shift(@ARGV))) {
+ if ($a =~ /^-/) {
+ if ($a eq '-width' || $a eq '-w') {
+ $max_width = shift(@ARGV)+0;
+ } else {
+ print STDERR "Usage: $name [-width #] files...\n";
+ exit 1;
+ }
+ } else {
+ push(@files, $a);
+ }
+}
+
+foreach $f ( @files ) {
print STDERR "$name: $f\n";
if (! -f $f) {
@@ -86,6 +128,7 @@
$in_bytes = 0;
$out_bytes = 0;
+ $lineno = 0;
@lines = ();
@@ -93,10 +136,12 @@
$err = 0;
while ( defined($line = <FILE>) ) {
+ $lineno++;
$in_bytes += length($line);
if (!$in_hunk) {
- if ($line =~ /^\@\@\s+\-([0-9]+),([0-9]+)\s+\+([0-9]+),([0-9]+)\s\@\@/) {
+ if ($line =~
+ /^\@\@\s+\-([0-9]+),([0-9]+)\s+\+([0-9]+),([0-9]+)\s\@\@/) {
$minus_lines = $2;
$plus_lines = $4;
if ($minus_lines || $plus_lines) {
@@ -117,6 +162,13 @@
$text =~ s/[ \t\r]*$//; # Remove trailing spaces
$text = clean_space_tabs($text);
+ $l_width = strwidth($text);
+ if ($max_width && $l_width > $max_width) {
+ print STDERR
+ "$f:$lineno: adds line exceeds $max_width ",
+ "characters ($l_width)\n";
+ }
+
push(@hunk_lines, '+'.$text);
} elsif ($line =~ /^\-/) {
$minus_lines--;