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# frozen_string_literal: true
#
# Common stuff for a linter
#
module LinterMixin
def run
offenses = []
applicable_files.each do |file|
if clean?(file)
print "."
else
offenses << file
print "F"
end
end
print "\n"
return if offenses.empty?
raise failure_message_for(offenses)
end
private
def failure_message_for(offenses)
msg = "#{self.class.name} detected offenses. "
msg += if respond_to?(:fixing_cmd)
"Run `#{fixing_cmd(offenses)}` to fix them."
else
"Affected files: #{offenses.join(' ')}"
end
msg
end
end
#
# Lints C files
#
class CLangFormatLinter
include LinterMixin
def applicable_files
Dir.glob("ext/byebug/*.[ch]")
end
def fixing_cmd(offenses)
"#{clang_format} -i #{offenses.join(' ')} -style=file"
end
def clean?(file)
linted, status = Open3.capture2("#{clang_format} #{file} -style=file")
status.success? && linted == File.read(file)
end
private
def clang_format
"clang-format-8"
end
end
#
# Lints executability of files
#
class ExecutableLinter
include LinterMixin
def applicable_files
Open3.capture2("git ls-files")[0].split
end
def clean?(file)
in_exec_folder = !(%r{(exe|bin)/} =~ file).nil?
executable = File.executable?(file)
(in_exec_folder && executable) || (!in_exec_folder && !executable)
end
end
#
# Checks no tabs in source code
#
class TabLinter
include LinterMixin
def applicable_files
Open3.capture2("git ls-files")[0].split
end
def clean?(file)
relative_path = Pathname.new(__FILE__).relative_path_from(Pathname.new(File.dirname(__dir__))).to_s
file == relative_path || !File.read(file, encoding: Encoding::UTF_8).include?(" ")
end
end
#
# Checks trailing whitespace
#
class TrailingWhitespaceLinter
include LinterMixin
def applicable_files
Open3.capture2("git ls-files")[0].split
end
def clean?(file)
File.read(file, encoding: Encoding::UTF_8) !~ / +$/
end
end
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