Class: CommandLineParser
- Inherits:
-
Object
- Object
- CommandLineParser
- Defined in:
- lib/command_line_parser.rb
Overview
Parses command line and configure #Optimist
Instance Attribute Summary collapse
-
#file_parser ⇒ Object
readonly
Returns the value of attribute file_parser.
-
#initialize_method ⇒ Object
readonly
Returns the value of attribute initialize_method.
-
#method ⇒ Object
readonly
Returns the value of attribute method.
Class Method Summary collapse
Instance Method Summary collapse
-
#initialize(file_parser) ⇒ CommandLineParser
constructor
Generate tool help menu.
- #maybe_help(banner, action_name = nil) ⇒ Object
- #raise_on_action_absence(sub_commands) ⇒ Object
- #run(action) ⇒ Object
- #tool_banner ⇒ Object
Constructor Details
#initialize(file_parser) ⇒ CommandLineParser
Generate tool help menu. IMPORTANT! Should be executed before ARGV.shift
12 13 14 15 16 17 18 19 20 21 22 23 24 25 |
# File 'lib/command_line_parser.rb', line 12 def initialize(file_parser) @file_parser = file_parser @sub_commands = @file_parser.runnable_methods.map { |m| m.name.to_s } @sub_commands_text = @file_parser.runnable_methods.map do |m| [ m.name.to_s, FileParser.(m).map(&:text).join("\n") ] end.to_h @parser = Optimist::Parser.new @parser.opt(:debug, 'Run in debug mode.', type: :flag) @parser.stop_on @sub_commands @initialize_method = nil end |
Instance Attribute Details
#file_parser ⇒ Object (readonly)
Returns the value of attribute file_parser.
7 8 9 |
# File 'lib/command_line_parser.rb', line 7 def file_parser @file_parser end |
#initialize_method ⇒ Object (readonly)
Returns the value of attribute initialize_method.
7 8 9 |
# File 'lib/command_line_parser.rb', line 7 def initialize_method @initialize_method end |
#method ⇒ Object (readonly)
Returns the value of attribute method.
7 8 9 |
# File 'lib/command_line_parser.rb', line 7 def method @method end |
Class Method Details
.debug=(value) ⇒ Object
31 32 33 34 35 |
# File 'lib/command_line_parser.rb', line 31 def self.debug=(value) return if @debug ENV['CR_DEBUG'] = 'true' @debug = value end |
.debug? ⇒ Boolean
27 28 29 |
# File 'lib/command_line_parser.rb', line 27 def self.debug? @debug end |
Instance Method Details
#maybe_help(banner, action_name = nil) ⇒ Object
48 49 50 51 52 53 54 55 56 57 58 |
# File 'lib/command_line_parser.rb', line 48 def maybe_help(, action_name = nil) action = action_name scope = ARGV if action_name action_index = ARGV.index(action) scope = ARGV[0..action_index] if action_index end return unless scope.any? { |a| %w(-h --help).include? a } @parser.("\n" + ) Optimist::with_standard_exception_handling(@parser) { raise Optimist::HelpNeeded } end |
#raise_on_action_absence(sub_commands) ⇒ Object
60 61 62 63 |
# File 'lib/command_line_parser.rb', line 60 def raise_on_action_absence(sub_commands) return if ARGV.any? { |a| sub_commands.include? a } raise ConsoleRunnerError, "You must provide one of available actions: #{sub_commands.join ', '}" end |
#run(action) ⇒ Object
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 |
# File 'lib/command_line_parser.rb', line 65 def run(action) maybe_help(, action ? action.name.to_s : nil) raise ConsoleRunnerError, 'Cannot find any @runnable action' unless action raise_on_action_absence @sub_commands @initialize_method ||= MethodParser.new(@file_parser.initialize_method) if @file_parser.initialize_method @method = MethodParser.new action [@initialize_method, @method].each do |method| next unless method method.optimist_opts.each { |a| @parser.opt(*a) } maybe_help(method.text, action.name.to_s) # Read code defaults # def droplet_create(name, region = 1, image = nil, size = nil, ssh_keys = nil) argv_from_code_defaults = [] method.default_values.each do |k, param_value_from_code| param_name_from_code = k.to_sym next if method..map(&:name).include?(param_name_from_code.to_s) next if param_value_from_code == 'nil' argv_from_code_defaults << "--#{param_name_from_code.to_s.gsub('_', '-')}" argv_from_code_defaults << param_value_from_code end # Raise on constant found constants = file_parser.constants argv_from_code_defaults.map do |x| existing_constant = constants.find { |c| c.name.to_s == x } raise "Constants as default params values are not supported by console_runner: #{existing_constant.name}" if existing_constant end parsed_code_default_args = @parser.parse(argv_from_code_defaults) params_names_from_code = parsed_code_default_args.keys.select { |k| k.to_s.include? '_given' }.map { |k| k.to_s.gsub('_given', '').to_sym } params_with_values_from_code = parsed_code_default_args.select { |k, _| params_names_from_code.include? k } params_with_values_from_code.delete_if { |k, v| v == 'nil' } parsed_cli_args = @parser.parse ARGV params_names_from_cl = parsed_cli_args.keys.select { |k| k.to_s.include? '_given' }.map { |k| k.to_s.gsub('_given', '').to_sym } params_with_values_from_cl = parsed_cli_args.select { |k, _| params_names_from_cl.include? k } method.cmd_opts = params_with_values_from_code.merge(params_with_values_from_cl) missed_params = [] method.required_parameters.each do |required_param| next if method. required_param next if method.cmd_opts[required_param.to_sym] missed_params << required_param end raise ConsoleRunnerError, "You must specify required parameter: #{missed_params.join(', ')}" if missed_params.count.positive? ARGV.shift end end |
#tool_banner ⇒ Object
37 38 39 40 41 42 43 44 45 46 |
# File 'lib/command_line_parser.rb', line 37 def result = FileParser.(@file_parser.clazz).map(&:text).join("\n") result += "\n\nAvailable actions:\n" result += @sub_commands_text.map do |c, text| t = "\t- #{c}" t += "\n\t\t#{text}" if text != '' t end.join("\n") result end |