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checkpatch: improve handling of multiple patches or files 

Similar to how patchew output looks like for multiple patches,
say what file or patch is being tested _before_ emitting errors.
This is clearer to a human that scans the output from top to
bottom.

In addition, provide a truncated commit hash and subject instead of
the full hash, and process the commits first-to-last rather than
last-to-first.

Inspired by Linux commit 0dea9f1eef86bedacad91b6f652ca1ab0d08854c
("checkpatch: reduce number of `git log` calls with --git", 2016-03-20).

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2018-11-29 09:35:47 +01:00
parent fd9c0cfeb7
commit c182b61996
1 changed files with 22 additions and 6 deletions
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28
scripts/checkpatch.pl
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@ -339,13 +339,18 @@ my @lines = ();
my $vname;
if ($chk_branch) {
my @patches;
my %git_commits = ();
my $HASH;
open($HASH, "-|", "git", "log", "--format=%H", $ARGV[0]) ||
die "$P: git log --format=%H $ARGV[0] failed - $!\n";
open($HASH, "-|", "git", "log", "--reverse", "--no-merges", "--format=%H %s", $ARGV[0]) ||
die "$P: git log --reverse --no-merges --format='%H %s' $ARGV[0] failed - $!\n";
while (<$HASH>) {
chomp;
push @patches, $_;
for my $line (<$HASH>) {
$line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
next if (!defined($1) || !defined($2));
my $sha1 = $1;
my $subject = $2;
push(@patches, $sha1);
$git_commits{$sha1} = $subject;
}
close $HASH;
@ -353,21 +358,31 @@ if ($chk_branch) {
die "$P: no revisions returned for revlist '$chk_branch'\n"
unless @patches;
my $i = 1;
my $num_patches = @patches;
for my $hash (@patches) {
my $FILE;
open($FILE, '-|', "git", "show", $hash) ||
die "$P: git show $hash - $!\n";
$vname = $hash;
while (<$FILE>) {
chomp;
push(@rawlines, $_);
}
close($FILE);
$vname = substr($hash, 0, 12) . ' (' . $git_commits{$hash} . ')';
if ($num_patches > 1 && $quiet == 0) {
print "$i/$num_patches Checking commit $vname\n";
$vname = "Patch $i/$num_patches";
} else {
$vname = "Commit " . $vname;
}
if (!process($hash)) {
$exit = 1;
print "\n" if ($num_patches > 1 && $quiet == 0);
}
@rawlines = ();
@lines = ();
$i++;
}
} else {
for my $filename (@ARGV) {
@ -386,6 +401,7 @@ if ($chk_branch) {
} else {
$vname = $filename;
}
print "Checking $filename...\n" if @ARGV > 1 && $quiet == 0;
while (<$FILE>) {
chomp;
push(@rawlines, $_);