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December 22, 2015 17:08
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ある歴史(BASE_COMMIT)以降に新規追加されたファイルが150行を超えたときにcommitをしないための、決意のpre-commit hookを書きました。
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#!/usr/bin/env perl | |
use strict; | |
use warnings; | |
use Perl::Metrics::Simple; | |
use constant { | |
EXIT_STATUS_SUCCESS => 0, | |
PERL_MODULE_FILENAME_PATTERN => qr/\.(pm|pl)$/, | |
LIMIT_LINES_OF_CODE => 150, | |
BASE_COMMIT => '9e732c2', | |
}; | |
sub is_empty_git_history { | |
system "git rev-parse --verify HEAD >/dev/null 2>&1"; | |
return $? != EXIT_STATUS_SUCCESS; | |
} | |
sub get_modified_files { | |
my $output = `git diff-index --cached --name-only HEAD`; | |
chomp($output); | |
return split /\n/, $output; | |
} | |
sub convert_analysis_object { | |
my $file = shift; | |
my $analyzer = Perl::Metrics::Simple->new; | |
my $analysis = $analyzer->analyze_files($file); | |
return $analysis; | |
} | |
sub is_new_added_file_since_base_history { | |
my $file = shift; | |
my $base_commit = BASE_COMMIT; | |
my $output = | |
`git log --after=$base_commit --diff-filter=A --pretty="%H,%ai" -- $file`; | |
return $output eq ''; | |
} | |
sub extract_violation_files { | |
grep { | |
$_->lines > LIMIT_LINES_OF_CODE | |
} map { | |
convert_analysis_object($_) | |
} grep { | |
is_new_added_file_since_base_history($_); | |
} grep { | |
$_ =~ PERL_MODULE_FILENAME_PATTERN | |
} get_modified_files; | |
} | |
return exit 1 if is_empty_git_history; | |
my @violation_files = extract_violation_files; | |
for my $file (@violation_files) { | |
warn sprintf( | |
"%s %s lines: over limit of lines of code. (current limit is %d).\n", | |
$file->files->[0], $file->lines, LIMIT_LINES_OF_CODE | |
); | |
} | |
exit 1 unless scalar(@violation_files) == 0; | |
exit 0; |
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