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|
#!/usr/bin/env perl
#
# SPDX-License-Identifier: BSD-3-Clause
# Copyright 2015-2020, Intel Corporation
#
#
# check_whitespace -- scrub source tree for whitespace errors
#
use strict;
use warnings;
use File::Basename;
use File::Find;
use Encode;
use v5.10;
my $Me = $0;
$Me =~ s,.*/,,;
$SIG{HUP} = $SIG{INT} = $SIG{TERM} = $SIG{__DIE__} = sub {
die @_ if $^S;
my $errstr = shift;
die "$Me: ERROR: $errstr";
};
my $Errcount = 0;
#
# err -- emit error, keep total error count
#
sub err {
warn @_, "\n";
$Errcount++;
}
#
# decode_file_as_string -- slurp an entire file into memory and decode
#
sub decode_file_as_string {
my ($full, $file) = @_;
my $fh;
open($fh, '<', $full) or die "$full $!\n";
local $/;
$_ = <$fh>;
close $fh;
# check known encodings or die
my $decoded;
my @encodings = ("UTF-8", "UTF-16", "UTF-16LE", "UTF-16BE");
foreach my $enc (@encodings) {
eval { $decoded = decode( $enc, $_, Encode::FB_CROAK ) };
if (!$@) {
$decoded =~ s/\R/\n/g;
return $decoded;
}
}
die "$Me: ERROR: Unknown file encoding";
}
#
# check_whitespace -- run the checks on the given file
#
sub check_whitespace {
my ($full, $file) = @_;
my $line = 0;
my $eol;
my $nf = 0;
my $fstr = decode_file_as_string($full, $file);
for (split /^/, $fstr) {
$line++;
$eol = /[\n]/s;
if (/^\.nf$/) {
err("$full:$line: ERROR: nested .nf") if $nf;
$nf = 1;
} elsif (/^\.fi$/) {
$nf = 0;
} elsif ($nf == 0) {
chomp;
err("$full:$line: ERROR: trailing whitespace") if /\s$/;
err("$full:$line: ERROR: spaces before tabs") if / \t/;
}
}
err("$full:$line: .nf without .fi") if $nf;
err("$full:$line: noeol") unless $eol;
}
sub check_whitespace_with_exc {
my ($full) = @_;
$_ = $full;
$_ = basename($full);
return 0 unless /^(README.*|LICENSE.*|CMakeLists.txt|.gitignore|check_whitespace|.*\.([chp13s]|cc|sh|map|cpp|hpp|inc|md|cmake))$/;
return 0 if -z;
check_whitespace($full, $_);
return 1;
}
my $verbose = 0;
my $force = 0;
my $recursive = 0;
sub check {
my ($file) = @_;
my $r;
if ($force) {
$r = check_whitespace($file, basename($file));
} else {
$r = check_whitespace_with_exc($file);
}
if ($verbose) {
if ($r == 0) {
printf("skipped $file\n");
} else {
printf("checked $file\n");
}
}
}
my @files = ();
foreach my $arg (@ARGV) {
if ($arg eq '-v') {
$verbose = 1;
next;
}
if ($arg eq '-f') {
$force = 1;
next;
}
if ($arg eq '-r') {
$recursive = 1;
next;
}
if ($arg eq '-g') {
@files = `git ls-tree -r --name-only HEAD`;
chomp(@files);
next;
}
if ($arg eq '-h') {
printf "Options:
-g - check all files tracked by git
-r dir - recursively check all files in specified directory
-v verbose - print whether file was checked or not
-f force - disable blacklist\n";
exit 1;
}
if ($recursive == 1) {
find(sub {
my $full = $File::Find::name;
if (!$force &&
($full eq './.git')) {
$File::Find::prune = 1;
return;
}
return unless -f;
push @files, $full;
}, $arg);
$recursive = 0;
next;
}
push @files, $arg;
}
if (!@files) {
printf "Empty file list!\n";
}
foreach (@files) {
check($_);
}
exit $Errcount;
|
