JezK

Edit File: cli.rb

# frozen_string_literal: true

require "bootsnap"
require "bootsnap/cli/worker_pool"
require "optparse"
require "fileutils"
require "etc"

module Bootsnap
  class CLI
    unless Regexp.method_defined?(:match?)
      module RegexpMatchBackport
        refine Regexp do
          def match?(string)
            !!match(string)
          end
        end
      end
      using RegexpMatchBackport
    end

attr_reader :cache_dir, :argv

attr_accessor :compile_gemfile, :exclude, :verbose, :iseq, :yaml, :json, :jobs

def initialize(argv)
      @argv = argv
      self.cache_dir = ENV.fetch("BOOTSNAP_CACHE_DIR", "tmp/cache")
      self.compile_gemfile = false
      self.exclude = nil
      self.verbose = false
      self.jobs = Etc.nprocessors
      self.iseq = true
      self.yaml = true
      self.json = true
    end

def precompile_command(*sources)
      require "bootsnap/compile_cache/iseq"
      require "bootsnap/compile_cache/yaml"
      require "bootsnap/compile_cache/json"

fix_default_encoding do
        Bootsnap::CompileCache::ISeq.cache_dir = cache_dir
        Bootsnap::CompileCache::YAML.init!
        Bootsnap::CompileCache::YAML.cache_dir = cache_dir
        Bootsnap::CompileCache::JSON.init!
        Bootsnap::CompileCache::JSON.cache_dir = cache_dir

@work_pool = WorkerPool.create(size: jobs, jobs: {
          ruby: method(:precompile_ruby),
          yaml: method(:precompile_yaml),
          json: method(:precompile_json),
        })
        @work_pool.spawn

main_sources = sources.map { |d| File.expand_path(d) }
        precompile_ruby_files(main_sources)
        precompile_yaml_files(main_sources)
        precompile_json_files(main_sources)

if compile_gemfile
          # Some gems embed their tests, they're very unlikely to be loaded, so not worth precompiling.
          gem_exclude = Regexp.union([exclude, "/spec/", "/test/"].compact)
          precompile_ruby_files($LOAD_PATH.map { |d| File.expand_path(d) }, exclude: gem_exclude)

# Gems that include JSON or YAML files usually don't put them in `lib/`.
          # So we look at the gem root.
          gem_pattern = %r{^#{Regexp.escape(Bundler.bundle_path.to_s)}/?(?:bundler/)?gems/[^/]+}
          gem_paths = $LOAD_PATH.map { |p| p[gem_pattern] }.compact.uniq
          precompile_yaml_files(gem_paths, exclude: gem_exclude)
          precompile_json_files(gem_paths, exclude: gem_exclude)
        end

if (exitstatus = @work_pool.shutdown)
          exit(exitstatus)
        end
      end
      0
    end

dir_sort = begin
      Dir[__FILE__, sort: false]
      true
    rescue ArgumentError, TypeError
      false
    end

if dir_sort
      def list_files(path, pattern)
        if File.directory?(path)
          Dir[File.join(path, pattern), sort: false]
        elsif File.exist?(path)
          [path]
        else
          []
        end
      end
    else
      def list_files(path, pattern)
        if File.directory?(path)
          Dir[File.join(path, pattern)]
        elsif File.exist?(path)
          [path]
        else
          []
        end
      end
    end

def run
      parser.parse!(argv)
      command = argv.shift
      method = "#{command}_command"
      if respond_to?(method)
        public_send(method, *argv)
      else
        invalid_usage!("Unknown command: #{command}")
      end
    end

private

def precompile_yaml_files(load_paths, exclude: self.exclude)
      return unless yaml

load_paths.each do |path|
        if !exclude || !exclude.match?(path)
          list_files(path, "**/*.{yml,yaml}").each do |yaml_file|
            # We ignore hidden files to not match the various .ci.yml files
            if !File.basename(yaml_file).start_with?(".") && (!exclude || !exclude.match?(yaml_file))
              @work_pool.push(:yaml, yaml_file)
            end
          end
        end
      end
    end

def precompile_yaml(*yaml_files)
      Array(yaml_files).each do |yaml_file|
        if CompileCache::YAML.precompile(yaml_file) && verbose
          $stderr.puts(yaml_file)
        end
      end
    end

def precompile_json_files(load_paths, exclude: self.exclude)
      return unless json

load_paths.each do |path|
        if !exclude || !exclude.match?(path)
          list_files(path, "**/*.json").each do |json_file|
            # We ignore hidden files to not match the various .config.json files
            if !File.basename(json_file).start_with?(".") && (!exclude || !exclude.match?(json_file))
              @work_pool.push(:json, json_file)
            end
          end
        end
      end
    end

def precompile_json(*json_files)
      Array(json_files).each do |json_file|
        if CompileCache::JSON.precompile(json_file) && verbose
          $stderr.puts(json_file)
        end
      end
    end

def precompile_ruby_files(load_paths, exclude: self.exclude)
      return unless iseq

load_paths.each do |path|
        if !exclude || !exclude.match?(path)
          list_files(path, "**/{*.rb,*.rake,Rakefile}").each do |ruby_file|
            if !exclude || !exclude.match?(ruby_file)
              @work_pool.push(:ruby, ruby_file)
            end
          end
        end
      end
    end

def precompile_ruby(*ruby_files)
      Array(ruby_files).each do |ruby_file|
        if CompileCache::ISeq.precompile(ruby_file) && verbose
          $stderr.puts(ruby_file)
        end
      end
    end

def fix_default_encoding
      if Encoding.default_external == Encoding::US_ASCII
        Encoding.default_external = Encoding::UTF_8
        begin
          yield
        ensure
          Encoding.default_external = Encoding::US_ASCII
        end
      else
        yield
      end
    end

def invalid_usage!(message)
      $stderr.puts message
      $stderr.puts
      $stderr.puts parser
      1
    end

def cache_dir=(dir)
      @cache_dir = File.expand_path(File.join(dir, "bootsnap/compile-cache"))
    end

def exclude_pattern(pattern)
      (@exclude_patterns ||= []) << Regexp.new(pattern)
      self.exclude = Regexp.union(@exclude_patterns)
    end

def parser
      @parser ||= OptionParser.new do |opts|
        opts.banner = "Usage: bootsnap COMMAND [ARGS]"
        opts.separator ""
        opts.separator "GLOBAL OPTIONS"
        opts.separator ""

help = <<~HELP
          Path to the bootsnap cache directory. Defaults to tmp/cache
        HELP
        opts.on("--cache-dir DIR", help.strip) do |dir|
          self.cache_dir = dir
        end

help = <<~HELP
          Print precompiled paths.
        HELP
        opts.on("--verbose", "-v", help.strip) do
          self.verbose = true
        end

help = <<~HELP
          Number of workers to use. Default to number of processors, set to 0 to disable multi-processing.
        HELP
        opts.on("--jobs JOBS", "-j", help.strip) do |jobs|
          self.jobs = Integer(jobs)
        end

opts.separator ""
        opts.separator "COMMANDS"
        opts.separator ""
        opts.separator "    precompile [DIRECTORIES...]: Precompile all .rb files in the passed directories"

help = <<~HELP
          Precompile the gems in Gemfile
        HELP
        opts.on("--gemfile", help) { self.compile_gemfile = true }

help = <<~HELP
          Path pattern to not precompile. e.g. --exclude 'aws-sdk|google-api'
        HELP
        opts.on("--exclude PATTERN", help) { |pattern| exclude_pattern(pattern) }

help = <<~HELP
          Disable ISeq (.rb) precompilation.
        HELP
        opts.on("--no-iseq", help) { self.iseq = false }

help = <<~HELP
          Disable YAML precompilation.
        HELP
        opts.on("--no-yaml", help) { self.yaml = false }

help = <<~HELP
          Disable JSON precompilation.
        HELP
        opts.on("--no-json", help) { self.json = false }
      end
    end
  end
end

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