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checkpatch.pl
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#!/usr/bin/env perl
# SPDX-License-Identifier: GPL-2.0
#
# (c) 2001, Dave Jones. (the file handling bit)
# (c) 2005, Joel Schopp <[email protected]> (the ugly bit)
# (c) 2007,2008, Andy Whitcroft <[email protected]> (new conditions, test suite)
# (c) 2008-2010 Andy Whitcroft <[email protected]>
# (c) 2010-2018 Joe Perches <[email protected]>
use strict;
use warnings;
use utf8;
use POSIX;
use File::Basename;
use Cwd 'abs_path';
use Term::ANSIColor qw(:constants);
use Encode qw(decode encode);
my $P = $0;
my $D = dirname(abs_path($P));
my $V = '0.32';
use Getopt::Long qw(:config no_auto_abbrev);
my $quiet = 0;
my $verbose = 0;
my %verbose_messages = ();
my %verbose_emitted = ();
my $chk_signoff = 0;
my $chk_patch = 1;
my $tst_only;
my $emacs = 0;
my $terse = 0;
my $showfile = 0;
my $file = 0;
my $git = 0;
my %git_commits = ();
my $summary = 1;
my $mailback = 0;
my $summary_file = 0;
my $show_types = 0;
my $list_types = 0;
my $gitroot = $ENV{'GIT_DIR'};
$gitroot = ".git" if !defined($gitroot);
my %debug;
my %use_type = ();
my @use = ();
my %ignore_type = ();
my @ignore = ();
my $help = 0;
my $configuration_file = ".checkpatch.conf";
my $max_line_length = 80;
my $minimum_perl_version = 5.10.0;
my $spelling_file = "$D/spelling.txt";
my $codespell = 0;
my $codespellfile = "/usr/share/codespell/dictionary.txt";
my $user_codespellfile = "";
my $docsfile = "$D/doc/checkpatch.rst";
my $typedefsfile;
my $color = "auto";
# git output parsing needs US English output, so first set backtick child process LANGUAGE
my $git_command ='export LANGUAGE=en_US.UTF-8; git';
my $tabsize = 8;
sub help {
my ($exitcode) = @_;
print << "EOM";
Usage: $P [OPTION]... [FILE]...
Version: $V
Options:
-q, --quiet quiet
-v, --verbose verbose mode
--signoff check for 'Signed-off-by' line
--patch treat FILE as patchfile (default)
--emacs emacs compile window format
--terse one line per report
--showfile emit diffed file position, not input file position
-g, --git treat FILE as a single commit or git revision range
single git commit with:
<rev>
<rev>^
<rev>~n
multiple git commits with:
<rev1>..<rev2>
<rev1>...<rev2>
<rev>-<count>
git merges are ignored
-f, --file treat FILE as regular source file
--list-types list the possible message types
--types TYPE(,TYPE2...) show only these comma separated message types
--ignore TYPE(,TYPE2...) ignore various comma separated message types
--show-types show the specific message type in the output
--max-line-length=n set the maximum line length, (default $max_line_length)
--tab-size=n set the number of spaces for tab (default $tabsize)
--no-summary suppress the per-file summary
--mailback only produce a report in case of errors
--summary-file include the filename in summary
--debug KEY=[0|1] turn on/off debugging of KEY, where KEY is one of
'values', 'possible', 'type', and 'attr' (default
is all off)
--test-only=WORD report only errors containing WORD
literally
--codespell Use the codespell dictionary for spelling/typos
(default:$codespellfile)
--codespellfile Use this codespell dictionary
--typedefsfile Read additional types from this file
--color[=WHEN] Use colors 'always', 'never', or only when output
is a terminal ('auto'). Default is 'auto'.
-h, --help, --version display this help and exit
When FILE is - read standard input.
EOM
exit($exitcode);
}
sub uniq {
my %seen;
return grep { !$seen{$_}++ } @_;
}
sub list_types {
my ($exitcode) = @_;
my $count = 0;
local $/ = undef;
open(my $script, '<', abs_path($P)) or
die "$P: Can't read '$P' $!\n";
my $text = <$script>;
close($script);
my %types = ();
# Also catch when type is passed through a variable
while ($text =~ /(?:\bERROR\s*\(|\$msg_type\s*=)\s*"([^"]+)"/g) {
$types{$1} = 1;
}
print("#\tMessage type\n");
foreach my $type (sort keys %types) {
my $orig_type = $type;
if ($color) {
$type = RED . $type . RESET;
}
print(++$count . "\t" . $type . "\n");
if ($verbose && exists($verbose_messages{$orig_type})) {
my $message = $verbose_messages{$orig_type};
$message =~ s/\n/\n\t/g;
print("\t" . $message . "\n\n");
}
}
exit($exitcode);
}
my $conf = which_conf($configuration_file);
if (-f $conf) {
my @conf_args;
open(my $conffile, '<', "$conf")
or warn "$P: Can't find a readable $configuration_file file $!\n";
while (<$conffile>) {
my $line = $_;
$line =~ s/\s*\n?$//g;
$line =~ s/^\s*//g;
$line =~ s/\s+/ /g;
next if ($line =~ m/^\s*#/);
next if ($line =~ m/^\s*$/);
my @words = split(" ", $line);
foreach my $word (@words) {
last if ($word =~ m/^#/);
push (@conf_args, $word);
}
}
close($conffile);
unshift(@ARGV, @conf_args) if @conf_args;
}
sub load_docs {
open(my $docs, '<', "$docsfile")
or warn "$P: Can't read the documentation file $docsfile $!\n";
my $type = '';
my $desc = '';
my $in_desc = 0;
while (<$docs>) {
chomp;
my $line = $_;
$line =~ s/\s+$//;
if ($line =~ /^\s*\*\*(.+)\*\*$/) {
if ($desc ne '') {
$verbose_messages{$type} = trim($desc);
}
$type = $1;
$desc = '';
$in_desc = 1;
} elsif ($in_desc) {
if ($line =~ /^(?:\s{4,}|$)/) {
$line =~ s/^\s{4}//;
$desc .= $line;
$desc .= "\n";
} else {
$verbose_messages{$type} = trim($desc);
$type = '';
$desc = '';
$in_desc = 0;
}
}
}
if ($desc ne '') {
$verbose_messages{$type} = trim($desc);
}
close($docs);
}
# Perl's Getopt::Long allows options to take optional arguments after a space.
# Prevent --color by itself from consuming other arguments
foreach (@ARGV) {
if ($_ eq "--color" || $_ eq "-color") {
$_ = "--color=$color";
}
}
GetOptions(
'q|quiet+' => \$quiet,
'v|verbose!' => \$verbose,
'signoff!' => \$chk_signoff,
'patch!' => \$chk_patch,
'emacs!' => \$emacs,
'terse!' => \$terse,
'showfile!' => \$showfile,
'f|file!' => \$file,
'g|git!' => \$git,
'ignore=s' => \@ignore,
'types=s' => \@use,
'show-types!' => \$show_types,
'list-types!' => \$list_types,
'max-line-length=i' => \$max_line_length,
'tab-size=i' => \$tabsize,
'summary!' => \$summary,
'mailback!' => \$mailback,
'summary-file!' => \$summary_file,
'debug=s' => \%debug,
'test-only=s' => \$tst_only,
'codespell!' => \$codespell,
'codespellfile=s' => \$user_codespellfile,
'typedefsfile=s' => \$typedefsfile,
'color=s' => \$color,
'no-color' => \$color, #keep old behaviors of -nocolor
'nocolor' => \$color, #keep old behaviors of -nocolor
'h|help' => \$help,
'version' => \$help
) or $help = 2;
if ($user_codespellfile) {
# Use the user provided codespell file unconditionally
$codespellfile = $user_codespellfile;
} elsif (!(-f $codespellfile)) {
# If /usr/share/codespell/dictionary.txt is not present, try to find it
# under codespell's install directory: <codespell_root>/data/dictionary.txt
if (($codespell || $help) && which("codespell") ne "" && which("python") ne "") {
my $python_codespell_dict = << "EOF";
import os.path as op
import codespell_lib
codespell_dir = op.dirname(codespell_lib.__file__)
codespell_file = op.join(codespell_dir, 'data', 'dictionary.txt')
print(codespell_file, end='')
EOF
my $codespell_dict = `python -c "$python_codespell_dict" 2> /dev/null`;
$codespellfile = $codespell_dict if (-f $codespell_dict);
}
}
# $help is 1 if either -h, --help or --version is passed as option - exitcode: 0
# $help is 2 if invalid option is passed - exitcode: 1
help($help - 1) if ($help);
die "$P: --git cannot be used with --file\n" if ($git && $file);
die "$P: --verbose cannot be used with --terse\n" if ($verbose && $terse);
if ($color =~ /^[01]$/) {
$color = !$color;
} elsif ($color =~ /^always$/i) {
$color = 1;
} elsif ($color =~ /^never$/i) {
$color = 0;
} elsif ($color =~ /^auto$/i) {
$color = (-t STDOUT);
} else {
die "$P: Invalid color mode: $color\n";
}
load_docs() if ($verbose);
list_types(0) if ($list_types);
my $exit = 0;
if ($^V && $^V lt $minimum_perl_version) {
printf "$P: requires at least perl version %vd\n", $minimum_perl_version;
exit(1)
}
#if no filenames are given, push '-' to read patch from stdin
if ($#ARGV < 0) {
push(@ARGV, '-');
}
# skip TAB size 1 to avoid additional checks on $tabsize - 1
die "$P: Invalid TAB size: $tabsize\n" if ($tabsize < 2);
sub hash_save_array_words {
my ($hashRef, $arrayRef) = @_;
my @array = split(/,/, join(',', @$arrayRef));
foreach my $word (@array) {
$word =~ s/\s*\n?$//g;
$word =~ s/^\s*//g;
$word =~ s/\s+/ /g;
$word =~ tr/[a-z]/[A-Z]/;
next if ($word =~ m/^\s*#/);
next if ($word =~ m/^\s*$/);
$hashRef->{$word}++;
}
}
sub hash_show_words {
my ($hashRef, $prefix) = @_;
if (keys %$hashRef) {
print "\nNOTE: $prefix message types:";
foreach my $word (sort keys %$hashRef) {
print " $word";
}
print "\n";
}
}
hash_save_array_words(\%ignore_type, \@ignore);
hash_save_array_words(\%use_type, \@use);
my $dbg_values = 0;
my $dbg_possible = 0;
my $dbg_type = 0;
my $dbg_attr = 0;
for my $key (keys %debug) {
## no critic
eval "\${dbg_$key} = '$debug{$key}';";
die "$@" if ($@);
}
if ($terse) {
$emacs = 1;
$quiet++;
}
my $emitted_corrupt = 0;
our $Ident = qr{
(?:::)?(?:[A-Za-z_][A-Za-z\d_]*::)*
[A-Za-z_][A-Za-z\d_]*
(?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
}x;
our $Storage = qr{extern|static};
our $Attribute = qr{
typename|
const|
volatile|
alignas|
API_EXPORT|
CFORMAT|
DEPREACTED|
FALLTHROUGH|
MAYBE_UNUSED|
NODISCARD|
NORETURN|
PACKED
}x;
our $Modifier;
our $Inline = qr{inline|NOINLINE};
our $Member = qr{->$Ident|\.$Ident|\[[^]]*\]};
our $Lval = qr{$Ident(?:$Member)*};
our $Int_type = qr{(?i)llu|ull|ll|lu|ul|l|u};
our $Binary = qr{(?i)0b[01]+$Int_type?};
our $Hex = qr{(?i)0x[0-9a-f]+$Int_type?};
our $Int = qr{[0-9]+$Int_type?};
our $Octal = qr{0[0-7]+$Int_type?};
our $String = qr{(?:\b[Lu])?"[X\t]*"};
our $Float_hex = qr{(?i)0x[0-9a-f]+p-?[0-9]+[fl]?};
our $Float_dec = qr{(?i)(?:[0-9]+\.[0-9]*|[0-9]*\.[0-9]+)(?:e-?[0-9]+)?[fl]?};
our $Float_int = qr{(?i)[0-9]+e-?[0-9]+[fl]?};
our $Float = qr{$Float_hex|$Float_dec|$Float_int};
our $Constant = qr{$Float|$Binary|$Octal|$Hex|$Int};
our $Assignment = qr{\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=};
our $Compare = qr{<=|>=|==|!=|<|(?<!-)>};
our $Arithmetic = qr{\+|-|\*|\/|%};
our $Operators = qr{
<=|>=|==|!=|
=>|->|<<|>>|<|>|!|~|
&&|\|\||,|\^|\+\+|--|&|\||$Arithmetic
}x;
our $c90_Keywords = qr{do|for|while|if|else|return|goto|continue|switch|default|case|break}x;
our $BasicType;
our $NonptrType;
our $NonptrTypeMisordered;
our $Type;
our $TypeMisordered;
our $Declare;
our $DeclareMisordered;
our $NON_ASCII_UTF8 = qr{
[\xC2-\xDF][\x80-\xBF] # non-overlong 2-byte
| \xE0[\xA0-\xBF][\x80-\xBF] # excluding overlongs
| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2} # straight 3-byte
| \xED[\x80-\x9F][\x80-\xBF] # excluding surrogates
| \xF0[\x90-\xBF][\x80-\xBF]{2} # planes 1-3
| [\xF1-\xF3][\x80-\xBF]{3} # planes 4-15
| \xF4[\x80-\x8F][\x80-\xBF]{2} # plane 16
}x;
our $UTF8 = qr{
[\x09\x0A\x0D\x20-\x7E] # ASCII
| $NON_ASCII_UTF8
}x;
# Skip all checks for the following paths.
our $skipPaths = qr{(?x:
test\/static\/corpus\/
)};
# Skip C/C++ source code checks for the following paths.
our $skipSrcPaths = qr{(?x:
src\/lib\/tzcode\/
)};
our $typeMacros = qr{(?x:
LIGHT
)};
our $typeTypedefs = qr{(?x:
(?:__)?(?:[us]_?)?int_?(?:8|16|32|64)_t|
u_(?:char|short|int|long)|
ev_loop|
lua_State
)};
our $logFunctions = qr{(?x:
say_file_line|
(?:log_)?say(?:_error|_crit|_warn|_info|_verbose|_debug|_syserror|)(?:_ratelimited)?|
panic(?:|_status|_syserror|)
)};
our $allocFunctions = qr{(?x:
(?:x)?(?:c|re|m)alloc|
(?:i|o)buf_(?:alloc|reserve)|
(?:ls)?region_(?:aligned_)?(?:alloc|reserve)|
region_join|
smalloc|
mempool_alloc
)};
our $signature_tags = qr{(?xi:
Signed-off-by:|
Co-authored-by:|
Co-developed-by:|
Acked-by:|
Tested-by:|
Reviewed-by:|
Reported-by:|
Suggested-by:|
To:|
Cc:
)};
our $custom_tags = qr{(?x:
NO_DOC|
NO_TEST|
NO_CHANGELOG
)};
sub edit_distance_min {
my (@arr) = @_;
my $len = scalar @arr;
if ((scalar @arr) < 1) {
# if underflow, return
return;
}
my $min = $arr[0];
for my $i (0 .. ($len-1)) {
if ($arr[$i] < $min) {
$min = $arr[$i];
}
}
return $min;
}
sub get_edit_distance {
my ($str1, $str2) = @_;
$str1 = lc($str1);
$str2 = lc($str2);
$str1 =~ s/-//g;
$str2 =~ s/-//g;
my $len1 = length($str1);
my $len2 = length($str2);
# two dimensional array storing minimum edit distance
my @distance;
for my $i (0 .. $len1) {
for my $j (0 .. $len2) {
if ($i == 0) {
$distance[$i][$j] = $j;
} elsif ($j == 0) {
$distance[$i][$j] = $i;
} elsif (substr($str1, $i-1, 1) eq substr($str2, $j-1, 1)) {
$distance[$i][$j] = $distance[$i - 1][$j - 1];
} else {
my $dist1 = $distance[$i][$j - 1]; #insert distance
my $dist2 = $distance[$i - 1][$j]; # remove
my $dist3 = $distance[$i - 1][$j - 1]; #replace
$distance[$i][$j] = 1 + edit_distance_min($dist1, $dist2, $dist3);
}
}
}
return $distance[$len1][$len2];
}
sub find_standard_signature {
my ($sign_off) = @_;
my @standard_signature_tags = (
'Signed-off-by:', 'Co-developed-by:', 'Acked-by:', 'Tested-by:',
'Reviewed-by:', 'Reported-by:', 'Suggested-by:'
);
foreach my $signature (@standard_signature_tags) {
return $signature if (get_edit_distance($sign_off, $signature) <= 2);
}
return "";
}
our @typeListMisordered = (
qr{char\s+(?:un)?signed},
qr{int\s+(?:(?:un)?signed\s+)?short\s},
qr{int\s+short(?:\s+(?:un)?signed)},
qr{short\s+int(?:\s+(?:un)?signed)},
qr{(?:un)?signed\s+int\s+short},
qr{short\s+(?:un)?signed},
qr{long\s+int\s+(?:un)?signed},
qr{int\s+long\s+(?:un)?signed},
qr{long\s+(?:un)?signed\s+int},
qr{int\s+(?:un)?signed\s+long},
qr{int\s+(?:un)?signed},
qr{int\s+long\s+long\s+(?:un)?signed},
qr{long\s+long\s+int\s+(?:un)?signed},
qr{long\s+long\s+(?:un)?signed\s+int},
qr{long\s+long\s+(?:un)?signed},
qr{long\s+(?:un)?signed},
);
our @typeList = (
qr{void},
qr{(?:(?:un)?signed\s+)?char},
qr{(?:(?:un)?signed\s+)?short\s+int},
qr{(?:(?:un)?signed\s+)?short},
qr{(?:(?:un)?signed\s+)?int},
qr{(?:(?:un)?signed\s+)?long\s+int},
qr{(?:(?:un)?signed\s+)?long\s+long\s+int},
qr{(?:(?:un)?signed\s+)?long\s+long},
qr{(?:(?:un)?signed\s+)?long},
qr{(?:un)?signed},
qr{float},
qr{double},
qr{bool},
qr{struct\s+$Ident},
qr{union\s+$Ident},
qr{enum\s+$Ident},
qr{${Ident}_t},
qr{${Ident}_f},
qr{${Ident}_fn},
qr{${Ident}_cb},
@typeListMisordered,
);
our $C90_int_types = qr{(?x:
long\s+long\s+int\s+(?:un)?signed|
long\s+long\s+(?:un)?signed\s+int|
long\s+long\s+(?:un)?signed|
(?:(?:un)?signed\s+)?long\s+long\s+int|
(?:(?:un)?signed\s+)?long\s+long|
int\s+long\s+long\s+(?:un)?signed|
int\s+(?:(?:un)?signed\s+)?long\s+long|
long\s+int\s+(?:un)?signed|
long\s+(?:un)?signed\s+int|
long\s+(?:un)?signed|
(?:(?:un)?signed\s+)?long\s+int|
(?:(?:un)?signed\s+)?long|
int\s+long\s+(?:un)?signed|
int\s+(?:(?:un)?signed\s+)?long|
int\s+(?:un)?signed|
(?:(?:un)?signed\s+)?int
)};
our $CXX_cast_operators = qr{(?x:
(?:const|dynamic|reinterpret|static)_cast
)};
our @typeListFile = ();
# We don't have any predefined modifiers yet, but the modifier list can't be
# empty so we add an unmatchable expression to it.
our @modifierList = (
qr{\b\B},
);
our @modifierListFile = ();
our @mode_permission_funcs = (
["creat", 2],
["open", 3],
["openat", 4],
["mkdir", 2],
["mkdirat", 3],
["chmod", 2],
["fchmod", 2],
["fchmodat", 3],
["coio_file_open", 3],
["coio_mkdir", 2],
["coio_chmod", 2],
);
my $word_pattern = '\b[A-Z]?[a-z]{2,}\b';
#Create a search pattern for all these functions to speed up a loop below
our $mode_perms_search = "";
foreach my $entry (@mode_permission_funcs) {
$mode_perms_search .= '|' if ($mode_perms_search ne "");
$mode_perms_search .= $entry->[0];
}
$mode_perms_search = "(?:${mode_perms_search})";
our %mode_permission_string_types = (
"S_IRWXU" => 0700,
"S_IRUSR" => 0400,
"S_IWUSR" => 0200,
"S_IXUSR" => 0100,
"S_IRWXG" => 0070,
"S_IRGRP" => 0040,
"S_IWGRP" => 0020,
"S_IXGRP" => 0010,
"S_IRWXO" => 0007,
"S_IROTH" => 0004,
"S_IWOTH" => 0002,
"S_IXOTH" => 0001,
"S_IRWXUGO" => 0777,
"S_IRUGO" => 0444,
"S_IWUGO" => 0222,
"S_IXUGO" => 0111,
);
#Create a search pattern for all these strings to speed up a loop below
our $mode_perms_string_search = "";
foreach my $entry (keys %mode_permission_string_types) {
$mode_perms_string_search .= '|' if ($mode_perms_string_search ne "");
$mode_perms_string_search .= $entry;
}
our $single_mode_perms_string_search = "(?:${mode_perms_string_search})";
our $multi_mode_perms_string_search = qr{
${single_mode_perms_string_search}
(?:\s*\|\s*${single_mode_perms_string_search})*
}x;
sub perms_to_octal {
my ($string) = @_;
return trim($string) if ($string =~ /^\s*0[0-7]{3,3}\s*$/);
my $val = "";
my $oval = "";
my $to = 0;
my $curpos = 0;
my $lastpos = 0;
while ($string =~ /\b(($single_mode_perms_string_search)\b(?:\s*\|\s*)?\s*)/g) {
$curpos = pos($string);
my $match = $2;
my $omatch = $1;
last if ($lastpos > 0 && ($curpos - length($omatch) != $lastpos));
$lastpos = $curpos;
$to |= $mode_permission_string_types{$match};
$val .= '\s*\|\s*' if ($val ne "");
$val .= $match;
$oval .= $omatch;
}
$oval =~ s/^\s*\|\s*//;
$oval =~ s/\s*\|\s*$//;
return sprintf("%04o", $to);
}
# Load common spelling mistakes and build regular expression list.
my $misspellings;
my %spelling_fix;
if (open(my $spelling, '<', $spelling_file)) {
while (<$spelling>) {
my $line = $_;
$line =~ s/\s*\n?$//g;
$line =~ s/^\s*//g;
next if ($line =~ m/^\s*#/);
next if ($line =~ m/^\s*$/);
my ($suspect, $fix) = split(/\|\|/, $line);
$spelling_fix{$suspect} = $fix;
}
close($spelling);
} else {
warn "No typos will be found - file '$spelling_file': $!\n";
}
if ($codespell) {
if (open(my $spelling, '<', $codespellfile)) {
while (<$spelling>) {
my $line = $_;
$line =~ s/\s*\n?$//g;
$line =~ s/^\s*//g;
next if ($line =~ m/^\s*#/);
next if ($line =~ m/^\s*$/);
next if ($line =~ m/, disabled/i);
$line =~ s/,.*$//;
my ($suspect, $fix) = split(/->/, $line);
$spelling_fix{$suspect} = $fix;
}
close($spelling);
} else {
warn "No codespell typos will be found - file '$codespellfile': $!\n";
}
}
$misspellings = join("|", sort keys %spelling_fix) if keys %spelling_fix;
sub read_words {
my ($wordsRef, $file) = @_;
if (open(my $words, '<', $file)) {
while (<$words>) {
my $line = $_;
$line =~ s/\s*\n?$//g;
$line =~ s/^\s*//g;
next if ($line =~ m/^\s*#/);
next if ($line =~ m/^\s*$/);
if ($line =~ /\s/) {
print("$file: '$line' invalid - ignored\n");
next;
}
$$wordsRef .= '|' if (defined $$wordsRef);
$$wordsRef .= $line;
}
close($file);
return 1;
}
return 0;
}
if (defined($typedefsfile)) {
my $typeOtherTypedefs;
read_words(\$typeOtherTypedefs, $typedefsfile)
or warn "No additional types will be considered - file '$typedefsfile': $!\n";
$typeTypedefs .= '|' . $typeOtherTypedefs if (defined $typeOtherTypedefs);
}
sub build_types {
my $mods = "(?x: \n" . join("|\n ", (@modifierList, @modifierListFile)) . "\n)";
my $all = "(?x: \n" . join("|\n ", (@typeList, @typeListFile)) . "\n)";
my $Misordered = "(?x: \n" . join("|\n ", @typeListMisordered) . "\n)";
$Modifier = qr{(?:$Attribute|$mods)};
$BasicType = qr{
(?:$typeTypedefs\b)|
(?:${all}\b)
}x;
$NonptrType = qr{
(?:$Modifier\s+|const\s+)*
(?:
(?:typeof|__typeof__|(?:struct\s+)?$typeMacros)\s*\([^\)]*\)|
(?:$typeTypedefs\b)|
(?:${all}\b)
)
(?:\s+$Modifier|\s+const)*
}x;
$NonptrTypeMisordered = qr{
(?:$Modifier\s+|const\s+)*
(?:
(?:${Misordered}\b)
)
(?:\s+$Modifier|\s+const)*
}x;
$Type = qr{
$NonptrType
(?:(?:\s|[\*\&]|\[\])+\s*const|(?:\s|[\*\&]\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+){0,4}
(?:\s+$Inline|\s+$Modifier)*
}x;
$TypeMisordered = qr{
$NonptrTypeMisordered
(?:(?:\s|[\*\&]|\[\])+\s*const|(?:\s|[\*\&]\s*(?:const\s*)?|\[\])+|(?:\s*\[\s*\])+){0,4}
(?:\s+$Inline|\s+$Modifier)*
}x;
$Declare = qr{(?:$Storage\s+(?:$Inline\s+)?)?$Type};
$DeclareMisordered = qr{(?:$Storage\s+(?:$Inline\s+)?)?$TypeMisordered};
}
build_types();
our $Typecast = qr{\s*(\(\s*$NonptrType\s*\)){0,1}\s*};
# Using $balanced_parens, $LvalOrFunc, or $FuncArg
# requires at least perl version v5.10.0
# Any use must be runtime checked with $^V
our $balanced_parens = qr/(\((?:[^\(\)]++|(?-1))*\))/;
our $LvalOrFunc = qr{((?:[\&\*]\s*)?$Lval)\s*($balanced_parens{0,1})\s*};
our $FuncArg = qr{$Typecast{0,1}($LvalOrFunc|$Constant|$String)};
our %allow_repeated_words = (
add => '',
added => '',
bad => '',
be => '',
);
sub deparenthesize {
my ($string) = @_;
return "" if (!defined($string));
while ($string =~ /^\s*\(.*\)\s*$/) {
$string =~ s@^\s*\(\s*@@;
$string =~ s@\s*\)\s*$@@;
}
$string =~ s@\s+@ @g;
return $string;
}
sub git_is_single_file {
my ($filename) = @_;
return 0 if ((which("git") eq "") || !(-e "$gitroot"));
my $output = `${git_command} ls-files -- $filename 2>/dev/null`;
my $count = $output =~ tr/\n//;
return $count eq 1 && $output =~ m{^${filename}$};
}
sub git_commit_info {
my ($commit, $id, $desc) = @_;
return ($id, $desc) if ((which("git") eq "") || !(-e "$gitroot"));
my $output = `${git_command} log --no-color --format='%H %s' -1 $commit 2>&1`;
$output =~ s/^\s*//gm;
my @lines = split("\n", $output);
return ($id, $desc) if ($#lines < 0);
if ($lines[0] =~ /^error: short SHA1 $commit is ambiguous/) {
# Maybe one day convert this block of bash into something that returns
# all matching commit ids, but it's very slow...
#
# echo "checking commits $1..."
# git rev-list --remotes | grep -i "^$1" |
# while read line ; do
# git log --format='%H %s' -1 $line |
# echo "commit $(cut -c 1-12,41-)"
# done
} elsif ($lines[0] =~ /^fatal: ambiguous argument '$commit': unknown revision or path not in the working tree\./ ||
$lines[0] =~ /^fatal: bad object $commit/) {
$id = undef;
} else {
$id = substr($lines[0], 0, 12);
$desc = substr($lines[0], 41);
}
return ($id, $desc);
}
$chk_signoff = 0 if ($file);
my @rawlines = ();
my @lines = ();
# If input is git commits, extract all commits from the commit expressions.
# For example, HEAD-3 means we need check 'HEAD, HEAD~1, HEAD~2'.
die "$P: No git repository found\n" if ($git && !-e "$gitroot");
if ($git) {
my @commits = ();
foreach my $commit_expr (@ARGV) {
my $git_range;
if ($commit_expr =~ m/^(.*)-(\d+)$/) {
$git_range = "-$2 $1";
} elsif ($commit_expr =~ m/\.\./) {
$git_range = "$commit_expr";
} else {
$git_range = "-1 $commit_expr";
}
my $lines = `${git_command} log --no-color --no-merges --pretty=format:'%H %s' $git_range`;
foreach my $line (split(/\n/, $lines)) {
$line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
next if (!defined($1) || !defined($2));
my $sha1 = $1;
my $subject = $2;
unshift(@commits, $sha1);
$git_commits{$sha1} = $subject;
}
}
die "$P: no git commits after extraction!\n" if (@commits == 0);
@ARGV = @commits;
}
my $vname;
for my $filename (@ARGV) {
my $FILE;
my $is_git_file = git_is_single_file($filename);
my $oldfile = $file;
$file = 1 if ($is_git_file);
if ($git) {
open($FILE, '-|', "git format-patch --no-stat -M --stdout -1 $filename") ||
die "$P: $filename: git format-patch failed - $!\n";
} elsif ($file) {
open($FILE, '-|', "diff -u /dev/null $filename") ||
die "$P: $filename: diff failed - $!\n";
} elsif ($filename eq '-') {
open($FILE, '<&STDIN');
} else {
open($FILE, '<', "$filename") ||
die "$P: $filename: open failed - $!\n";
}
if ($filename eq '-') {
$vname = 'Your patch';
} elsif ($git) {
$vname = "Commit " . substr($filename, 0, 12) . ' ("' . $git_commits{$filename} . '")';
} else {
$vname = $filename;
}
while (<$FILE>) {
chomp;
push(@rawlines, $_);
$vname = qq("$1") if ($filename eq '-' && $_ =~ m/^Subject:\s+(.+)/i);
}
close($FILE);
if ($#ARGV > 0 && $quiet == 0) {
print '-' x length($vname) . "\n";
print "$vname\n";
print '-' x length($vname) . "\n";
}
if (!process($filename)) {
$exit = 1;
}
@rawlines = ();
@lines = ();
@modifierListFile = ();
@typeListFile = ();
build_types();
$file = $oldfile if ($is_git_file);
}
if (!$quiet) {
hash_show_words(\%use_type, "Used");
hash_show_words(\%ignore_type, "Ignored");
if ($exit) {
print << "EOM"
NOTE: If any of the errors are false positives, please file a bug at