lib/slim_lint/options.rb
# frozen_string_literal: true
require 'optparse'
module SlimLint
# Handles option parsing for the command line application.
class Options
# Parses command line options into an options hash.
#
# @param args [Array<String>] arguments passed via the command line
# @return [Hash] parsed options
def parse(args)
@options = {}
OptionParser.new do |parser|
parser.banner = "Usage: #{APP_NAME} [options] [file1, file2, ...]"
add_linter_options parser
add_file_options parser
add_info_options parser
end.parse!(args)
# Any remaining arguments are assumed to be files
@options[:files] = args
@options
rescue OptionParser::InvalidOption => e
raise Exceptions::InvalidCLIOption,
e.message,
e.backtrace
end
private
# Register linter-related flags.
def add_linter_options(parser)
parser.on('-i', '--include-linter linter,...', Array,
'Specify which linters you want to run') do |linters|
@options[:included_linters] = linters
end
parser.on('-x', '--exclude-linter linter,...', Array,
"Specify which linters you don't want to run") do |linters|
@options[:excluded_linters] = linters
end
parser.on('-r', '--reporter reporter', String,
'Specify which reporter you want to use to generate the output') do |reporter|
@options[:reporter] = load_reporter_class(reporter.capitalize)
end
end
# Returns the class of the specified Reporter.
#
# @param reporter_name [String]
# @raise [SlimLint::Exceptions::InvalidCLIOption] if reporter doesn't exist
# @return [Class]
def load_reporter_class(reporter_name)
SlimLint::Reporter.const_get("#{reporter_name}Reporter")
rescue NameError
raise SlimLint::Exceptions::InvalidCLIOption,
"#{reporter_name}Reporter does not exist"
end
# Register file-related flags.
def add_file_options(parser)
parser.on('-c', '--config config-file', String,
'Specify which configuration file you want to use') do |conf_file|
@options[:config_file] = conf_file
end
parser.on('-e', '--exclude file,...', Array,
'List of file names to exclude') do |files|
@options[:excluded_files] = files
end
parser.on('--stdin-file-path file', String,
'Pipe source from STDIN, using file in offense reports.') do |file|
@options[:stdin_file_path] = file
end
end
# Register informational flags.
def add_info_options(parser)
parser.on('--show-linters', 'Display available linters') do
@options[:show_linters] = true
end
parser.on('--show-reporters', 'Display available reporters') do
@options[:show_reporters] = true
end
parser.on('--[no-]color', 'Force output to be colorized') do |color|
@options[:color] = color
end
parser.on_tail('-h', '--help', 'Display help documentation') do
@options[:help] = parser.help
end
parser.on_tail('-v', '--version', 'Display version') do
@options[:version] = true
end
parser.on_tail('-V', '--verbose-version', 'Display verbose version information') do
@options[:verbose_version] = true
end
end
end
end