class RDoc::RDoc

这是生成 RDoc 输出的驱动程序。它处理文件解析和输出生成。

要使用此类通过 API 生成 RDoc 输出,推荐的方法是

rdoc = RDoc::RDoc.new
options = RDoc::Options.load_options # returns an RDoc::Options instance
# set extra options
rdoc.document options

您还可以生成类似 rdoc 可执行文件的输出

rdoc = RDoc::RDoc.new
rdoc.document argv

其中 argv 是一个字符串数组,每个字符串对应于您在命令行中给 rdoc 的参数。有关详细信息,请参阅 rdoc --help

常量

GENERATORS

这是支持的输出生成器列表

TEST_SUITE_DIRECTORY_NAMES

如果应跳过测试套件,则跳过的目录名称列表

UNCONDITIONALLY_SKIPPED_DIRECTORIES

始终跳过的目录名称列表

属性

generator[RW]

用于创建输出的生成器实例

last_modified[R]

文件及其上次修改时间的哈希值。

options[RW]

RDoc 选项

stats[R]

统计信息的访问器。每次调用 parse_files 后可用

store[R]

当前的文档存储

公共类方法

add_generator(klass) 点击以切换源

添加在解析后可以生成输出的 klass

# File rdoc/rdoc.rb, line 77
def self.add_generator(klass)
  name = klass.name.sub(/^RDoc::Generator::/, '').downcase
  GENERATORS[name] = klass
end
current() 点击以切换源

活动的 RDoc::RDoc 实例

# File rdoc/rdoc.rb, line 85
def self.current
  @current
end
current=(rdoc) 点击以切换源

设置活动的 RDoc::RDoc 实例

# File rdoc/rdoc.rb, line 92
def self.current= rdoc
  @current = rdoc
end
new() 点击以切换源

创建一个新的 RDoc::RDoc 实例。调用 document 来解析文件并生成文档。

# File rdoc/rdoc.rb, line 100
def initialize
  @current       = nil
  @generator     = nil
  @last_modified = {}
  @old_siginfo   = nil
  @options       = nil
  @stats         = nil
  @store         = nil
end

公共实例方法

document(options) 点击以切换源

根据 options 中的设置生成文档或覆盖率报告。

options 可以是 RDoc::Options 实例或一个字符串数组,相当于在命令行中传递的字符串,例如 %w[-q -o doc -t My\ Doc\ Title]document 如果给定了选项实例,将自动调用 RDoc::Options#finish

有关选项列表,请参阅 RDoc::Optionsrdoc --help

默认情况下,输出将存储在当前目录下的一个名为“doc”的目录中,因此请确保您在调用之前位于可写位置。

# File rdoc/rdoc.rb, line 452
def document options
  self.store = RDoc::Store.new

  if RDoc::Options === options then
    @options = options
  else
    @options = RDoc::Options.load_options
    @options.parse options
  end
  @options.finish

  if @options.pipe then
    handle_pipe
    exit
  end

  unless @options.coverage_report then
    @last_modified = setup_output_dir @options.op_dir, @options.force_update
  end

  @store.encoding = @options.encoding
  @store.dry_run  = @options.dry_run
  @store.main     = @options.main_page
  @store.title    = @options.title
  @store.path     = @options.op_dir

  @start_time = Time.now

  @store.load_cache

  file_info = parse_files @options.files

  @options.default_title = "RDoc Documentation"

  @store.complete @options.visibility

  @stats.coverage_level = @options.coverage_report

  if @options.coverage_report then
    puts

    puts @stats.report.accept RDoc::Markup::ToRdoc.new
  elsif file_info.empty? then
    $stderr.puts "\nNo newer files." unless @options.quiet
  else
    gen_klass = @options.generator

    @generator = gen_klass.new @store, @options

    generate
  end

  if @stats and (@options.coverage_report or not @options.quiet) then
    puts
    puts @stats.summary.accept RDoc::Markup::ToRdoc.new
  end

  exit @stats.fully_documented? if @options.coverage_report
end
error(msg) 点击以切换源

报告错误消息并退出

# File rdoc/rdoc.rb, line 113
def error(msg)
  raise RDoc::Error, msg
end
gather_files(files) 点击以切换源

files 中列出的文件和目录中收集一组可解析的文件。

# File rdoc/rdoc.rb, line 121
def gather_files files
  files = [@options.root.to_s] if files.empty?

  file_list = normalized_file_list files, true, @options.exclude

  file_list = remove_unparseable(file_list)

  if file_list.count {|name, mtime|
       file_list[name] = @last_modified[name] unless mtime
       mtime
     } > 0
    @last_modified.replace file_list
    file_list.keys.sort
  else
    []
  end
end
generate() 点击以切换源

使用 RDoc 选项选择的生成器,将 file_info(来自 parse_files)的文档生成到输出目录中

# File rdoc/rdoc.rb, line 517
def generate
  if @options.dry_run then
    # do nothing
    @generator.generate
  else
    Dir.chdir @options.op_dir do
      unless @options.quiet then
        $stderr.puts "\nGenerating #{@generator.class.name.sub(/^.*::/, '')} format into #{Dir.pwd}..."
        $stderr.puts "\nYou can visit the home page at: \e]8;;file://#{Dir.pwd}/index.html\e\\file://#{Dir.pwd}/index.html\e]8;;\e\\"
      end

      @generator.generate
      update_output_dir '.', @start_time, @last_modified
    end
  end
end
handle_pipe() 点击以切换源

将来自 stdin 的 RDoc 转换为 HTML

# File rdoc/rdoc.rb, line 142
def handle_pipe
  @html = RDoc::Markup::ToHtml.new @options

  parser = RDoc::Text::MARKUP_FORMAT[@options.markup]

  document = parser.parse $stdin.read

  out = @html.convert document

  $stdout.write out
end
install_siginfo_handler() 点击以切换源

安装一个 siginfo 处理程序,该处理程序打印当前文件名。

# File rdoc/rdoc.rb, line 157
def install_siginfo_handler
  return unless Signal.list.include? 'INFO'

  @old_siginfo = trap 'INFO' do
    puts @current if @current
  end
end
list_files_in_directory(dir) 点击以切换源

返回要在一个目录中处理的文件列表。我们知道此目录没有 .document 文件,因此我们正在寻找真实的文件。但是,我们很可能包含必须测试 .document 文件的子目录。

# File rdoc/rdoc.rb, line 323
def list_files_in_directory dir
  files = Dir.glob File.join(dir, "*")

  normalized_file_list files, false, @options.exclude
end
normalized_file_list(relative_files, force_doc = false, exclude_pattern = nil) 点击以切换源

给定文件和目录列表,创建它们包含的所有 Ruby 文件列表。

如果 force_doc 为 true,我们总是添加给定的文件,如果为 false,则只添加我们保证可以解析的文件。当查看命令行中给定的文件时为 true,当递归遍历子目录时为 false。

这样做的效果是,如果您想解析具有非标准扩展名的文件,则必须显式命名它。

# File rdoc/rdoc.rb, line 275
def normalized_file_list(relative_files, force_doc = false,
                         exclude_pattern = nil)
  file_list = {}

  relative_files.each do |rel_file_name|
    rel_file_name = rel_file_name.sub(/^\.\//, '')
    next if rel_file_name.end_with? 'created.rid'
    next if exclude_pattern && exclude_pattern =~ rel_file_name
    stat = File.stat rel_file_name rescue next

    case type = stat.ftype
    when "file" then
      mtime = (stat.mtime unless (last_modified = @last_modified[rel_file_name] and
                                  stat.mtime.to_i <= last_modified.to_i))

      if force_doc or RDoc::Parser.can_parse(rel_file_name) then
        file_list[rel_file_name] = mtime
      end
    when "directory" then
      next if UNCONDITIONALLY_SKIPPED_DIRECTORIES.include?(rel_file_name)

      basename = File.basename(rel_file_name)
      next if options.skip_tests && TEST_SUITE_DIRECTORY_NAMES.include?(basename)

      created_rid = File.join rel_file_name, "created.rid"
      next if File.file? created_rid

      dot_doc = File.join rel_file_name, RDoc::DOT_DOC_FILENAME

      if File.file? dot_doc then
        file_list.update(parse_dot_doc_file(rel_file_name, dot_doc))
      else
        file_list.update(list_files_in_directory(rel_file_name))
      end
    else
      warn "rdoc can't parse the #{type} #{rel_file_name}"
    end
  end

  file_list
end
output_flag_file(op_dir) 点击以切换源

返回输出目录中标志文件的路径名。

# File rdoc/rdoc.rb, line 240
def output_flag_file(op_dir)
  File.join op_dir, "created.rid"
end
parse_dot_doc_file(in_dir, filename) 点击以切换源

.document 文件包含文件和目录名称模式的列表,表示文档的候选对象。它也可能包含注释(以“#”开头)

# File rdoc/rdoc.rb, line 249
def parse_dot_doc_file in_dir, filename
  # read and strip comments
  patterns = File.read(filename).gsub(/#.*/, '')

  result = {}

  patterns.split(' ').each do |patt|
    candidates = Dir.glob(File.join(in_dir, patt))
    result.update normalized_file_list(candidates, false, @options.exclude)
  end

  result
end
parse_file(filename) 点击以切换源

解析 filename 并返回一个 RDoc::TopLevel

# File rdoc/rdoc.rb, line 332
  def parse_file filename
    encoding = @options.encoding
    filename = filename.encode encoding

    @stats.add_file filename

    return if RDoc::Parser.binary? filename

    content = RDoc::Encoding.read_file filename, encoding

    return unless content

    filename_path = Pathname(filename).expand_path
    begin
      relative_path = filename_path.relative_path_from @options.root
    rescue ArgumentError
      relative_path = filename_path
    end

    if @options.page_dir and
       relative_path.to_s.start_with? @options.page_dir.to_s then
      relative_path =
        relative_path.relative_path_from @options.page_dir
    end

    top_level = @store.add_file filename, relative_name: relative_path.to_s

    parser = RDoc::Parser.for top_level, content, @options, @stats

    return unless parser

    parser.scan

    # restart documentation for the classes & modules found
    top_level.classes_or_modules.each do |cm|
      cm.done_documenting = false
    end

    top_level

  rescue Errno::EACCES => e
    $stderr.puts <<-EOF
Unable to read #{filename}, #{e.message}

Please check the permissions for this file.  Perhaps you do not have access to
it or perhaps the original author's permissions are to restrictive.  If the
this is not your library please report a bug to the author.
    EOF
  rescue => e
    $stderr.puts <<-EOF
Before reporting this, could you check that the file you're documenting
has proper syntax:

  #{Gem.ruby} -c #{filename}

RDoc is not a full Ruby parser and will fail when fed invalid ruby programs.

The internal error was:

\t(#{e.class}) #{e.message}

    EOF

    $stderr.puts e.backtrace.join("\n\t") if $DEBUG_RDOC

    raise e
  end
parse_files(files) 点击以切换源

解析命令行中的每个文件,递归地进入目录。

# File rdoc/rdoc.rb, line 403
def parse_files files
  file_list = gather_files files
  @stats = RDoc::Stats.new @store, file_list.length, @options.verbosity

  return [] if file_list.empty?

  # This workaround can be removed after the :main: directive is removed
  original_options = @options.dup
  @stats.begin_adding

  file_info = file_list.map do |filename|
    @current = filename
    parse_file filename
  end.compact

  @store.resolve_c_superclasses

  @stats.done_adding
  @options = original_options

  file_info
end
remove_siginfo_handler() 点击以切换源

删除 siginfo 处理程序并替换之前的处理程序

# File rdoc/rdoc.rb, line 537
def remove_siginfo_handler
  return unless Signal.list.key? 'INFO'

  handler = @old_siginfo || 'DEFAULT'

  trap 'INFO', handler
end
remove_unparseable(files) 点击以切换源

files 中删除已知无法解析的文件扩展名,以及 emacs 和 vim 的 TAGS 文件。

# File rdoc/rdoc.rb, line 430
def remove_unparseable files
  files.reject do |file, *|
    file =~ /\.(?:class|eps|erb|scpt\.txt|svg|ttf|yml)$/i or
      (file =~ /tags$/i and
       /\A(\f\n[^,]+,\d+$|!_TAG_)/.match?(File.binread(file, 100)))
  end
end
setup_output_dir(dir, force) 点击以切换源

如果输出目录不存在,则创建它。如果它确实存在,但不包含标志文件 created.rid,那么我们将拒绝使用它,因为我们可能会破坏一些手动生成的文档

# File rdoc/rdoc.rb, line 170
  def setup_output_dir(dir, force)
    flag_file = output_flag_file dir

    last = {}

    if @options.dry_run then
      # do nothing
    elsif File.exist? dir then
      error "#{dir} exists and is not a directory" unless File.directory? dir

      begin
        File.open flag_file do |io|
          unless force then
            Time.parse io.gets

            io.each do |line|
              file, time = line.split "\t", 2
              time = Time.parse(time) rescue next
              last[file] = time
            end
          end
        end
      rescue SystemCallError, TypeError
        error <<-ERROR

Directory #{dir} already exists, but it looks like it isn't an RDoc directory.

Because RDoc doesn't want to risk destroying any of your existing files,
you'll need to specify a different output directory name (using the --op <dir>
option)

        ERROR
      end unless @options.force_output
    else
      FileUtils.mkdir_p dir
      FileUtils.touch flag_file
    end

    last
  end
store=(store) 点击以切换源

将当前的文档树设置为 store,并将存储的 rdoc 驱动程序设置为此实例。

# File rdoc/rdoc.rb, line 215
def store= store
  @store = store
  @store.rdoc = self
end
update_output_dir(op_dir, time, last = {}) 点击以切换源

更新输出目录中的标志文件。

# File rdoc/rdoc.rb, line 223
def update_output_dir(op_dir, time, last = {})
  return if @options.dry_run or not @options.update_output_dir
  unless ENV['SOURCE_DATE_EPOCH'].nil?
    time = Time.at(ENV['SOURCE_DATE_EPOCH'].to_i).gmtime
  end

  File.open output_flag_file(op_dir), "w" do |f|
    f.puts time.rfc2822
    last.each do |n, t|
      f.puts "#{n}\t#{t.rfc2822}"
    end
  end
end