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

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

Overview

This class is part of a private API. You should avoid using this class if possible, as it may be removed or be changed in the future.

This cop makes sure that shell command arguments are separated.

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, #caveats_strings, #depends_on?, #depends_on_name_type?, #formula_tap, #get_checksum_node, #on_class, #tap_style_exception?, #versioned_formula?

Methods included from HelperFunctions

#block_size, #check_precedence, #class_name, #component_precedes?, #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, #line_number, #line_start_column, #method_called?, #method_called_ever?, #method_called_in_block?, #method_name, #node_equals?, #offending_node, #parameters, #parameters_passed?, #problem, #regex_match_group, #size, #source_buffer, #start_column, #string_content

Instance Method Details

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

This method is part of a private API. You should avoid using this method if possible, as it may be removed or be changed in the future. 



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# File 'brew/Library/Homebrew/rubocops/lines.rb', line 656

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}\"`" do |corrector|
      corrector.replace(@offensive_node.source_range, @offensive_node.source.gsub(" ", "\", \""))
    end
  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}\"`" do |corrector|
        good_args = @offensive_node.source.gsub(" ", "\", \"")
        corrector.replace(@offensive_node.source_range, good_args)
      end
    end
  end
end