Class: RuboCop::Cop::FormulaAuditStrict::ShellCommands

Inherits:
RuboCop::Cop::FormulaCop show all
Defined in:
brew/Library/Homebrew/rubocops/lines.rb

Instance Attribute Summary

Attributes inherited from RuboCop::Cop::FormulaCop

#file_path

Instance Method Summary collapse

Methods inherited from RuboCop::Cop::FormulaCop

#audit_comments, #audit_urls, #block_size, #caveats_strings, #check_precedence, #class_name, #component_precedes?, #depends_on?, #depends_on_name_type?, #end_column, #expression_negated?, #find_all_blocks, #find_block, #find_blocks, #find_const, #find_every_func_call_by_name, #find_every_method_call_by_name, #find_instance_call, #find_instance_method_call, #find_method_calls_by_name, #find_method_def, #find_method_with_args, #find_node_method_by_name, #find_strings, #format_component, #formula_tap, #get_checksum_node, #line_number, #line_start_column, #method_called?, #method_called_ever?, #method_called_in_block?, #method_name, #node_equals?, #offending_node, #on_class, #parameters, #parameters_passed?, #problem, #regex_match_group, #size, #source_buffer, #start_column, #string_content, #versioned_formula?

Instance Method Details

#audit_formula(_node, _class_node, _parent_class_node, body_node) ⇒ Object 



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# File 'brew/Library/Homebrew/rubocops/lines.rb', line 560

def audit_formula(_node, _class_node, _parent_class_node, body_node)
  # Match shell commands separated by spaces in the same string
  shell_cmd_with_spaces_regex = /[^"' ]*(?:\s[^"' ]*)+/

  popen_commands = [
    :popen_read,
    :safe_popen_read,
    :popen_write,
    :safe_popen_write,
  ]

  shell_metacharacters = %w[> < < | ; : & * $ ? : ~ + @ !` ( ) [ ]]

  find_every_method_call_by_name(body_node, :system).each do |method|
    # Only separate when no shell metacharacters are present
    next if shell_metacharacters.any? { |meta| string_content(parameters(method).first).include?(meta) }

    next unless match = regex_match_group(parameters(method).first, shell_cmd_with_spaces_regex)

    good_args = match[0].gsub(" ", "\", \"")
    offending_node(parameters(method).first)
    problem "Separate `system` commands into `\"#{good_args}\"`"
  end

  popen_commands.each do |command|
    find_instance_method_call(body_node, "Utils", command) do |method|
      index = parameters(method).first.hash_type? ? 1 : 0

      # Only separate when no shell metacharacters are present
      next if shell_metacharacters.any? { |meta| string_content(parameters(method)[index]).include?(meta) }

      next unless match = regex_match_group(parameters(method)[index], shell_cmd_with_spaces_regex)

      good_args = match[0].gsub(" ", "\", \"")
      offending_node(parameters(method)[index])
      problem "Separate `Utils.#{command}` commands into `\"#{good_args}\"`"
    end
  end
end

#autocorrect(node) ⇒ Object 



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# File 'brew/Library/Homebrew/rubocops/lines.rb', line 600

def autocorrect(node)
  lambda do |corrector|
    good_args = node.source.gsub(" ", "\", \"")
    corrector.replace(node.source_range, good_args)
  end
end