Class: Ukiryu::Extractors::HelpParser

Inherits:
BaseExtractor show all
Defined in:
lib/ukiryu/extractors/help_parser.rb

Overview

Help parser extraction strategy

Reverse-engineers a tool definition by parsing the output of the tool’s ‘–help` command.

Instance Method Summary collapse

Methods inherited from BaseExtractor

#initialize

Constructor Details

This class inherits a constructor from Ukiryu::Extractors::BaseExtractor

Instance Method Details

#available? ⇒ Boolean

Check if the tool has help output

Returns:

  • (Boolean) —

    true if –help produces output



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# File 'lib/ukiryu/extractors/help_parser.rb', line 29

def available?
  return false if command_not_found?

  help_result = execute_command([@tool_name.to_s, '--help'])
  help_result[:exit_status].zero? && !(help_result[:stdout] + help_result[:stderr]).strip.empty?
end

#extract ⇒ String?

Extract definition by parsing help output

Returns:

  • (String, nil) —

    the YAML definition or nil if extraction failed



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# File 'lib/ukiryu/extractors/help_parser.rb', line 13

def extract
  return nil unless available?

  help_result = execute_command([@tool_name.to_s, '--help'])
  return nil unless help_result[:exit_status].zero?

  help_text = help_result[:stdout] + help_result[:stderr]
  return nil if help_text.strip.empty?

  # Parse help output and generate YAML
  parse_help_to_yaml(help_text)
end