Module: Homebrew::Style Private

Defined in:
style.rb

Overview

This module is part of a private API. This module may only be used in the Homebrew/brew repository. Third parties should avoid using this module if possible, as it may be removed or changed without warning.

Helper module for running RuboCop.

Defined Under Namespace

Classes: Offense, Offenses

Constant Summary collapse

RUBOCOP =

This constant is part of a private API. This constant may only be used in the Homebrew/brew repository. Third parties should avoid using this constant if possible, as it may be removed or changed without warning. 

(HOMEBREW_LIBRARY_PATH/"utils/rubocop.rb").freeze

Class Method Summary collapse

Class Method Details

.check_style_and_print(files, **options) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Checks style for a list of files, printing simple RuboCop output. Returns true if violations were found, false otherwise.



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# File 'style.rb', line 14

def self.check_style_and_print(files, **options)
  success = check_style_impl(files, :print, **options)

  if ENV["GITHUB_ACTIONS"] && !success
    check_style_json(files, **options).each do |path, offenses|
      offenses.each do |o|
        line = o.location.line
        column = o.location.line

        annotation = GitHub::Actions::Annotation.new(:error, o.message, file: path, line: line, column: column)
        puts annotation if annotation.relevant?
      end
    end
  end

  success
end

.check_style_impl(files, output_type, fix: false, except_cops: nil, only_cops: nil, display_cop_names: false, reset_cache: false, debug: false, verbose: false) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Raises:

  • (ArgumentError) 


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# File 'style.rb', line 38

def self.check_style_impl(files, output_type,
                          fix: false,
                          except_cops: nil, only_cops: nil,
                          display_cop_names: false,
                          reset_cache: false,
                          debug: false, verbose: false)
  raise ArgumentError, "Invalid output type: #{output_type.inspect}" if [:print, :json].exclude?(output_type)

  shell_files, ruby_files =
    Array(files).map(&method(:Pathname))
                .partition { |f| f.realpath == HOMEBREW_BREW_FILE.realpath || f.extname == ".sh" }

  rubocop_result = if shell_files.any? && ruby_files.none?
    (output_type == :json) ? [] : true
  else
    run_rubocop(ruby_files, output_type,
                fix: fix,
                except_cops: except_cops, only_cops: only_cops,
                display_cop_names: display_cop_names,
                reset_cache: reset_cache,
                debug: debug, verbose: verbose)
  end

  shellcheck_result = if ruby_files.any? && shell_files.none?
    (output_type == :json) ? [] : true
  else
    run_shellcheck(shell_files, output_type, fix: fix)
  end

  shfmt_result = if ruby_files.any? && shell_files.none?
    true
  else
    run_shfmt(shell_files, fix: fix)
  end

  if output_type == :json
    Offenses.new(rubocop_result + shellcheck_result)
  else
    rubocop_result && shellcheck_result && shfmt_result
  end
end

.check_style_json(files, **options) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning.

Checks style for a list of files, returning results as an Offenses object parsed from its JSON output.



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# File 'style.rb', line 34

def self.check_style_json(files, **options)
  check_style_impl(files, :json, **options)
end

.json_result!(result) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'style.rb', line 244

def self.json_result!(result)
  # An exit status of 1 just means violations were found; other numbers mean
  # execution errors.
  # JSON needs to be at least 2 characters.
  result.assert_success! if !(0..1).cover?(result.status.exitstatus) || result.stdout.length < 2

  JSON.parse(result.stdout)
end

.run_rubocop(files, output_type, fix: false, except_cops: nil, only_cops: nil, display_cop_names: false, reset_cache: false, debug: false, verbose: false) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'style.rb', line 82

def self.run_rubocop(files, output_type,
                     fix: false, except_cops: nil, only_cops: nil, display_cop_names: false, reset_cache: false,
                     debug: false, verbose: false)
  Homebrew.install_bundler_gems!(groups: ["style"])

  require "warnings"

  Warnings.ignore :parser_syntax do
    require "rubocop"
  end

  require "rubocops/all"

  args = %w[
    --force-exclusion
  ]
  args << if fix
    "--autocorrect-all"
  else
    "--parallel"
  end

  args += ["--extra-details"] if verbose

  if except_cops
    except_cops.map! { |cop| RuboCop::Cop::Cop.registry.qualified_cop_name(cop.to_s, "") }
    cops_to_exclude = except_cops.select do |cop|
      RuboCop::Cop::Cop.registry.names.include?(cop) ||
        RuboCop::Cop::Cop.registry.departments.include?(cop.to_sym)
    end

    args << "--except" << cops_to_exclude.join(",") unless cops_to_exclude.empty?
  elsif only_cops
    only_cops.map! { |cop| RuboCop::Cop::Cop.registry.qualified_cop_name(cop.to_s, "") }
    cops_to_include = only_cops.select do |cop|
      RuboCop::Cop::Cop.registry.names.include?(cop) ||
        RuboCop::Cop::Cop.registry.departments.include?(cop.to_sym)
    end

    odie "RuboCops #{only_cops.join(",")} were not found" if cops_to_include.empty?

    args << "--only" << cops_to_include.join(",")
  end

  files&.map!(&:expand_path)
  if files.blank? || files == [HOMEBREW_REPOSITORY]
    files = [HOMEBREW_LIBRARY_PATH]
  elsif files.none? { |f| f.to_s.start_with? HOMEBREW_LIBRARY_PATH }
    args << "--config" << (HOMEBREW_LIBRARY/".rubocop.yml")
  end

  args += files

  cache_env = { "XDG_CACHE_HOME" => "#{HOMEBREW_CACHE}/style" }

  FileUtils.rm_rf cache_env["XDG_CACHE_HOME"] if reset_cache

  ruby_args = HOMEBREW_RUBY_EXEC_ARGS.dup
  case output_type
  when :print
    args << "--debug" if debug

    # Don't show the default formatter's progress dots
    # on CI or if only checking a single file.
    args << "--format" << "clang" if ENV["CI"] || files.count { |f| !f.directory? } == 1

    args << "--color" if Tty.color?

    system cache_env, *ruby_args, "--", RUBOCOP, *args
    $CHILD_STATUS.success?
  when :json
    result = system_command ruby_args.shift,
                            args: [*ruby_args, "--", RUBOCOP, "--format", "json", *args],
                            env:  cache_env
    json = json_result!(result)
    json["files"]
  end
end

.run_shellcheck(files, output_type, fix: false) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'style.rb', line 161

def self.run_shellcheck(files, output_type, fix: false)
  files = shell_scripts if files.blank?

  files = files.map(&:realpath) # use absolute file paths

  args = [
    "--shell=bash",
    "--enable=all",
    "--external-sources",
    "--source-path=#{HOMEBREW_LIBRARY}",
    "--",
    *files,
  ]

  if fix
    # patch options:
    #   -g 0 (--get=0)       : suppress environment variable `PATCH_GET`
    #   -f   (--force)       : we know what we are doing, force apply patches
    #   -d / (--directory=/) : change to root directory, since we use absolute file paths
    #   -p0  (--strip=0)     : do not strip path prefixes, since we are at root directory
    # NOTE: we use short flags where for compatibility
    patch_command = %w[patch -g 0 -f -d / -p0]
    patches = system_command(shellcheck, args: ["--format=diff", *args]).stdout
    Utils.safe_popen_write(*patch_command) { |p| p.write(patches) } if patches.present?
  end

  case output_type
  when :print
    system shellcheck, "--format=tty", *args
    $CHILD_STATUS.success?
  when :json
    result = system_command shellcheck, args: ["--format=json", *args]
    json = json_result!(result)

    # Convert to same format as RuboCop offenses.
    severity_hash = { "style" => "refactor", "info" => "convention" }
    json.group_by { |v| v["file"] }
        .map do |k, v|
      {
        "path"     => k,
        "offenses" => v.map do |o|
          o.delete("file")

          o["cop_name"] = "SC#{o.delete("code")}"

          level = o.delete("level")
          o["severity"] = severity_hash.fetch(level, level)

          line = o.delete("line")
          column = o.delete("column")

          o["corrected"] = false
          o["correctable"] = o.delete("fix").present?

          o["location"] = {
            "start_line"   => line,
            "start_column" => column,
            "last_line"    => o.delete("endLine"),
            "last_column"  => o.delete("endColumn"),
            "line"         => line,
            "column"       => column,
          }

          o
        end,
      }
    end
  end
end

.run_shfmt(files, fix: false) ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'style.rb', line 231

def self.run_shfmt(files, fix: false)
  files = shell_scripts if files.blank?
  # Do not format completions and Dockerfile
  files.delete(HOMEBREW_REPOSITORY/"completions/bash/brew")
  files.delete(HOMEBREW_REPOSITORY/"Dockerfile")

  args = ["--language-dialect", "bash", "--indent", "2", "--case-indent", "--", *files]
  args.unshift("--write") if fix # need to add before "--"

  system shfmt, *args
  $CHILD_STATUS.success?
end

.shell_scripts ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'style.rb', line 253

def self.shell_scripts
  [
    HOMEBREW_BREW_FILE,
    HOMEBREW_REPOSITORY/"completions/bash/brew",
    HOMEBREW_REPOSITORY/"Dockerfile",
    *HOMEBREW_REPOSITORY.glob(".devcontainer/**/*.sh"),
    *HOMEBREW_REPOSITORY.glob("package/scripts/*"),
    *HOMEBREW_LIBRARY.glob("Homebrew/**/*.sh").reject { |path| path.to_s.include?("/vendor/") },
    *HOMEBREW_LIBRARY.glob("Homebrew/shims/**/*").map(&:realpath).uniq
                     .reject(&:directory?)
                     .reject { |path| path.basename.to_s == "cc" }
                     .select do |path|
                       %r{^#! ?/bin/(?:ba)?sh( |$)}.match?(path.read(13))
                     end,
    *HOMEBREW_LIBRARY.glob("Homebrew/{dev-,}cmd/*.sh"),
    *HOMEBREW_LIBRARY.glob("Homebrew/{cask/,}utils/*.sh"),
  ]
end

.shellcheck ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'style.rb', line 272

def self.shellcheck
  ensure_formula_installed!("shellcheck", latest: true,
                                          reason: "shell style checks").opt_bin/"shellcheck"
end

.shfmt ⇒ Object

This method is part of a private API. This method may only be used in the Homebrew/brew repository. Third parties should avoid using this method if possible, as it may be removed or changed without warning. 



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# File 'style.rb', line 277

def self.shfmt
  ensure_formula_installed!("shfmt", latest: true,
                                     reason: "formatting shell scripts")
  HOMEBREW_LIBRARY/"Homebrew/utils/shfmt.sh"
end