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scripts: let checkpatch.pl process an entire GIT branch

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Currently before submitting a series, devs should run checkpatch.pl
across each patch to be submitted. This can be automated using a
command such as:

  git rebase -i master -x 'git show | ./scripts/checkpatch.pl -'

This is rather long winded to type, so this patch introduces a way
to tell checkpatch.pl to validate a series of GIT revisions.

There are now three modes it can operate in 1) check a patch 2) check a source
file, or 3) check a git branch.

If no flags are given, the mode is determined by checking the args passed to
the command. If the args contain a literal ".." it is treated as a GIT revision
list. If the args end in ".patch" or equal "-" it is treated as a patch file.
Otherwise it is treated as a source file.

This automatic guessing can be overridden using --[no-]patch --[no-]file or
--[no-]branch

For example to check a GIT revision list:

    $ ./scripts/checkpatch.pl master..
    total: 0 errors, 0 warnings, 297 lines checked

    b886d352a2bf58f0996471fb3991a138373a2957 has no obvious style problems and is ready for submission.
    total: 0 errors, 0 warnings, 182 lines checked

    2a731f9a9ce145e0e0df6d42dd2a3ce4dfc543fa has no obvious style problems and is ready for submission.
    total: 0 errors, 0 warnings, 102 lines checked

    11844169bcc0c8ed4449eb3744a69877ed329dd7 has no obvious style problems and is ready for submission.

If a genuine patch filename contains the characters '..' it is
possible to force interpretation of the arg as a patch

  $ ./scripts/checkpatch.pl --patch master..

will force it to load a patch file called "master..", or equivalently

  $ ./scripts/checkpatch.pl --no-branch master..

will simply turn off guessing of GIT revision lists.

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Message-Id: <20170913091000.9005-1-berrange@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Daniel P. Berrange 2017-09-13 10:10:00 +01:00 committed by Paolo Bonzini
parent 40bf8e9aed
commit 8e1fe1753a
1 changed files with 111 additions and 27 deletions
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94
scripts/checkpatch.pl
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@ -18,11 +18,12 @@ use Getopt::Long qw(:config no_auto_abbrev);
my $quiet = 0;
my $tree = 1;
my $chk_signoff = 1;
my $chk_patch = 1;
my $chk_patch = undef;
my $chk_branch = undef;
my $tst_only;
my $emacs = 0;
my $terse = 0;
my $file = 0;
my $file = undef;
my $no_warnings = 0;
my $summary = 1;
my $mailback = 0;
@ -35,14 +36,19 @@ sub help {
my ($exitcode) = @_;
print << "EOM";
Usage: $P [OPTION]... [FILE]...
Usage:
$P [OPTION]... [FILE]...
$P [OPTION]... [GIT-REV-LIST]
Version: $V
Options:
-q, --quiet quiet
--no-tree run without a kernel tree
--no-signoff do not check for 'Signed-off-by' line
--patch treat FILE as patchfile (default)
--patch treat FILE as patchfile
--branch treat args as GIT revision list
--emacs emacs compile window format
--terse one line per report
-f, --file treat FILE as regular source file
@ -69,6 +75,7 @@ GetOptions(
'tree!' => \$tree,
'signoff!' => \$chk_signoff,
'patch!' => \$chk_patch,
'branch!' => \$chk_branch,
'emacs!' => \$emacs,
'terse!' => \$terse,
'f|file!' => \$file,
@ -93,6 +100,49 @@ if ($#ARGV < 0) {
exit(1);
}
if (!defined $chk_branch && !defined $chk_patch && !defined $file) {
$chk_branch = $ARGV[0] =~ /\.\./ ? 1 : 0;
$chk_patch = $chk_branch ? 0 :
$ARGV[0] =~ /\.patch$/ || $ARGV[0] eq "-" ? 1 : 0;
$file = $chk_branch || $chk_patch ? 0 : 1;
} elsif (!defined $chk_branch && !defined $chk_patch) {
if ($file) {
$chk_branch = $chk_patch = 0;
} else {
$chk_branch = $ARGV[0] =~ /\.\./ ? 1 : 0;
$chk_patch = $chk_branch ? 0 : 1;
}
} elsif (!defined $chk_branch && !defined $file) {
if ($chk_patch) {
$chk_branch = $file = 0;
} else {
$chk_branch = $ARGV[0] =~ /\.\./ ? 1 : 0;
$file = $chk_branch ? 0 : 1;
}
} elsif (!defined $chk_patch && !defined $file) {
if ($chk_branch) {
$chk_patch = $file = 0;
} else {
$chk_patch = $ARGV[0] =~ /\.patch$/ || $ARGV[0] eq "-" ? 1 : 0;
$file = $chk_patch ? 0 : 1;
}
} elsif (!defined $chk_branch) {
$chk_branch = $chk_patch || $file ? 0 : 1;
} elsif (!defined $chk_patch) {
$chk_patch = $chk_branch || $file ? 0 : 1;
} elsif (!defined $file) {
$file = $chk_patch || $chk_branch ? 0 : 1;
}
if (($chk_patch && $chk_branch) ||
($chk_patch && $file) ||
($chk_branch && $file)) {
die "Only one of --file, --branch, --patch is permitted\n";
}
if (!$chk_patch && !$chk_branch && !$file) {
die "One of --file, --branch, --patch is required\n";
}
my $dbg_values = 0;
my $dbg_possible = 0;
my $dbg_type = 0;
@ -251,7 +301,40 @@ $chk_signoff = 0 if ($file);
my @rawlines = ();
my @lines = ();
my $vname;
for my $filename (@ARGV) {
if ($chk_branch) {
my @patches;
my $HASH;
open($HASH, "-|", "git", "log", "--format=%H", $ARGV[0]) ||
die "$P: git log --format=%H $ARGV[0] failed - $!\n";
while (<$HASH>) {
chomp;
push @patches, $_;
}
close $HASH;
die "$P: no revisions returned for revlist '$chk_branch'\n"
unless @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);
if (!process($hash)) {
$exit = 1;
}
@rawlines = ();
@lines = ();
}
} else {
for my $filename (@ARGV) {
my $FILE;
if ($file) {
open($FILE, '-|', "diff -u /dev/null $filename") ||
@ -277,6 +360,7 @@ for my $filename (@ARGV) {
}
@rawlines = ();
@lines = ();
}
}
exit($exit);