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#: * `style` [`--fix`] [`--display-cop-names`] [<files>|<taps>|<formulae>]:
#: Check formulae or files for conformance to Homebrew style guidelines.
#:
#: <formulae> and <files> may not be combined. If both are omitted, style will run
#: style checks on the whole Homebrew `Library`, including core code and all
#: formulae.
#:
#: If `--fix` is passed, style violations will be automatically fixed using
#: RuboCop's `--auto-correct` feature.
#:
#: If `--display-cop-names` is passed, the RuboCop cop name for each violation
#: is included in the output.
#:
#: Exits with a non-zero status if any style violations are found.
require "utils"
require "utils/json"
module Homebrew
def style
target = if ARGV.named.empty?
[HOMEBREW_LIBRARY_PATH]
elsif ARGV.named.any? { |file| File.exist? file }
ARGV.named
elsif ARGV.named.any? { |tap| tap.count("/") == 1 }
ARGV.named.map { |tap| Tap.fetch(tap).path }
else
ARGV.formulae.map(&:path)
end
Homebrew.failed = check_style_and_print(target, fix: ARGV.flag?("--fix"))
end
# Checks style for a list of files, printing simple RuboCop output.
# Returns true if violations were found, false otherwise.
def check_style_and_print(files, options = {})
check_style_impl(files, :print, options)
end
# Checks style for a list of files, returning results as a RubocopResults
# object parsed from its JSON output.
def check_style_json(files, options = {})
check_style_impl(files, :json, options)
end
def check_style_impl(files, output_type, options = {})
fix = options[:fix]
Homebrew.install_gem_setup_path! "rubocop", "0.43.0"
args = %W[
--force-exclusion
--config #{HOMEBREW_LIBRARY}/.rubocop.yml
]
args << "--auto-correct" if fix
args += files
HOMEBREW_LIBRARY.cd do
case output_type
when :print
args << "--display-cop-names" if ARGV.include? "--display-cop-names"
system "rubocop", "--format", "simple", *args
!$?.success?
when :json
json = Utils.popen_read_text("rubocop", "--format", "json", *args)
# exit status of 1 just means violations were found; other numbers mean execution errors
# exitstatus can also be nil if RuboCop process crashes, e.g. due to
# native extension problems
raise "Error while running RuboCop" if $?.exitstatus.nil? || $?.exitstatus > 1
RubocopResults.new(Utils::JSON.load(json))
else
raise "Invalid output_type for check_style_impl: #{output_type}"
end
end
end
class RubocopResults
def initialize(json)
@metadata = json["metadata"]
@file_offenses = {}
json["files"].each do |f|
next if f["offenses"].empty?
file = File.realpath(f["path"])
@file_offenses[file] = f["offenses"].map { |x| RubocopOffense.new(x) }
end
end
def file_offenses(path)
@file_offenses[path.to_s]
end
end
class RubocopOffense
attr_reader :severity, :message, :corrected, :location, :cop_name
def initialize(json)
@severity = json["severity"]
@message = json["message"]
@cop_name = json["cop_name"]
@corrected = json["corrected"]
@location = RubocopLineLocation.new(json["location"])
end
def severity_code
@severity[0].upcase
end
def to_s(options = {})
if options[:display_cop_name]
"#{severity_code}: #{location.to_short_s}: #{cop_name}: #{message}"
else
"#{severity_code}: #{location.to_short_s}: #{message}"
end
end
end
class RubocopLineLocation
attr_reader :line, :column, :length
def initialize(json)
@line = json["line"]
@column = json["column"]
@length = json["length"]
end
def to_s
"#{line}: col #{column} (#{length} chars)"
end
def to_short_s
"#{line}: col #{column}"
end
end
end
|
