checkpatch: Merge continuation-header handling from .38.

This commit is a cherry pick and squash of commits:
85c2ee62d37c19456c6dc83db262123956f010ac
4bc7c6001daba7d4037f54f67bae7fa90f759402

  checkpatch: Handle continuation headers.

  Continuation headers baffle checkpatch, as it can only operate
  on one line of context at a time.  When continuation headers are found,
  put them up with the header they're continuing so the whole thing
  can be parsed in a single line of context.

  checkpatch: Don't treat diffs as patches.

  The patch-header cleanup code assumed that it would only ever
  see patches, which was of course hogwash.  This lead to crazy
  results as it tried to wrap what it thought were continuation
  lines at the beginnings of raw diffs.

Signed-off-by: Gregory Bean <gbean@codeaurora.org>
(cherry picked from commit 57d50ae730a057ee1099a94a397475bfd147d97b)

Conflicts:

	scripts/checkpatch.pl

Change-Id: I60b2d914ada9a8690b89ffb8c1e32a8b81a5e715
This commit is contained in:
Gregory Bean 2011-07-06 15:36:58 -07:00 committed by Stephen Boyd
parent 5bc97df95b
commit 20a44b003b

View file

@ -1341,6 +1341,33 @@ sub check_absolute_file {
}
}
sub cleanup_continuation_headers {
# Collapse any header-continuation lines into a single line so they
# can be parsed meaningfully, as the parser only has one line
# of context to work with.
my $again;
do {
$again = 0;
foreach my $n (0 .. scalar(@rawlines) - 2) {
if ($rawlines[$n]=~/^\s*$/) {
# A blank line means there's no more chance
# of finding headers. Shortcut to done.
return;
}
if ($rawlines[$n]=~/^[\x21-\x39\x3b-\x7e]+:/ &&
$rawlines[$n+1]=~/^\s+/) {
# Continuation header. Collapse it.
my $line = splice @rawlines, $n+1, 1;
$line=~s/^\s+/ /;
$rawlines[$n] .= $line;
# We've 'destabilized' the list, so restart.
$again = 1;
last;
}
}
} while ($again);
}
sub pos_last_openparen {
my ($line) = @_;
@ -1431,7 +1458,9 @@ sub process {
my $shorttext_exspc = 0;
sanitise_line_reset();
cleanup_continuation_headers();
my $line;
foreach my $rawline (@rawlines) {
$linenr++;
$line = $rawline;