Class: RDoc::RDoc

Inherits:
Object
  • Object
show all
Defined in:
lib/rdoc/rdoc.rb

Overview

This is the driver for generating RDoc output. It handles file parsing and generation of output.

To use this class to generate RDoc output via the API, the recommended way is:

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

You can also generate output like the rdoc executable:

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

Where argv is an array of strings, each corresponding to an argument you’d give rdoc on the command line. See <tt>rdoc –help<tt> for details.

Constant Summary collapse

GENERATORS =

This is the list of supported output generators

{}

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ RDoc

Creates a new RDoc::RDoc instance. Call #document to parse files and generate documentation.



93
94
95
96
97
98
99
100
101
102
 
# File 'lib/rdoc/rdoc.rb', line 93

def initialize
  @current       = nil
  @exclude       = nil
  @generator     = nil
  @last_modified = {}
  @old_siginfo   = nil
  @options       = nil
  @stats         = nil
  @store         = nil
end

Instance Attribute Details

#exclude ⇒ Object

File pattern to exclude



40
41
42
 
# File 'lib/rdoc/rdoc.rb', line 40

def exclude
  @exclude
end

#generator ⇒ Object

Generator instance used for creating output



45
46
47
 
# File 'lib/rdoc/rdoc.rb', line 45

def generator
  @generator
end

#last_modified ⇒ Object (readonly)

Hash of files and their last modified times.



50
51
52
 
# File 'lib/rdoc/rdoc.rb', line 50

def last_modified
  @last_modified
end

#options ⇒ Object

RDoc options



55
56
57
 
# File 'lib/rdoc/rdoc.rb', line 55

def options
  @options
end

#stats ⇒ Object (readonly)

Accessor for statistics. Available after each call to parse_files



60
61
62
 
# File 'lib/rdoc/rdoc.rb', line 60

def stats
  @stats
end

#store ⇒ Object

The current documentation store



65
66
67
 
# File 'lib/rdoc/rdoc.rb', line 65

def store
  @store
end

Class Method Details

.add_generator(klass) ⇒ Object

Add klass that can generate output after parsing



70
71
72
73
 
# File 'lib/rdoc/rdoc.rb', line 70

def self.add_generator(klass)
  name = klass.name.sub(/^RDoc::Generator::/, '').downcase
  GENERATORS[name] = klass
end

.current ⇒ Object

Active RDoc::RDoc instance



78
79
80
 
# File 'lib/rdoc/rdoc.rb', line 78

def self.current
  @current
end

.current=(rdoc) ⇒ Object

Sets the active RDoc::RDoc instance



85
86
87
 
# File 'lib/rdoc/rdoc.rb', line 85

def self.current= rdoc
  @current = rdoc
end

Instance Method Details

#document(options) ⇒ Object

Generates documentation or a coverage report depending upon the settings in options.

options can be either an RDoc::Options instance or an array of strings equivalent to the strings that would be passed on the command line like %w[-q -o doc -t My\ Doc\ Title]. #document will automatically call RDoc::Options#finish if an options instance was given.

For a list of options, see either RDoc::Options or rdoc --help.

By default, output will be stored in a directory called “doc” below the current directory, so make sure you’re somewhere writable before invoking.



461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
 
# File 'lib/rdoc/rdoc.rb', line 461

def document options
  self.store = RDoc::Store.new

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

  if @options.pipe then
    handle_pipe
    exit
  end

  @exclude = @options.exclude

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

  @store.encoding = @options.encoding if @options.respond_to? :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) ⇒ Object

Report an error message and exit

Raises:



107
108
109
 
# File 'lib/rdoc/rdoc.rb', line 107

def error(msg)
  raise RDoc::Error, msg
end

#gather_files(files) ⇒ Object

Gathers a set of parseable files from the files and directories listed in files.



115
116
117
118
119
120
121
122
123
124
125
 
# File 'lib/rdoc/rdoc.rb', line 115

def gather_files files
  files = ["."] if files.empty?

  file_list = normalized_file_list files, true, @exclude

  file_list = file_list.uniq

  file_list = remove_unparseable file_list

  file_list.sort
end

#generate ⇒ Object

Generates documentation for file_info (from #parse_files) into the output dir using the generator selected by the RDoc options



528
529
530
531
532
533
534
535
536
537
 
# File 'lib/rdoc/rdoc.rb', line 528

def generate
  Dir.chdir @options.op_dir do
    unless @options.quiet then
      $stderr.puts "\nGenerating #{@generator.class.name.sub(/^.*::/, '')} format into #{Dir.pwd}..."
    end

    @generator.generate
    update_output_dir '.', @start_time, @last_modified
  end
end

#handle_pipe ⇒ Object

Turns RDoc from stdin into HTML



130
131
132
133
134
135
136
137
138
139
140
 
# File 'lib/rdoc/rdoc.rb', line 130

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 ⇒ Object

Installs a siginfo handler that prints the current filename.



145
146
147
148
149
150
151
 
# File 'lib/rdoc/rdoc.rb', line 145

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) ⇒ Object

Return a list of the files to be processed in a directory. We know that this directory doesn’t have a .document file, so we’re looking for real files. However we may well contain subdirectories which must be tested for .document files.



332
333
334
335
336
 
# File 'lib/rdoc/rdoc.rb', line 332

def list_files_in_directory dir
  files = Dir.glob File.join(dir, "*")

  normalized_file_list files, false, @options.exclude
end

#load_options ⇒ Object

Loads options from .rdoc_options if the file exists, otherwise creates a new RDoc::Options instance.

Raises:



157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
 
# File 'lib/rdoc/rdoc.rb', line 157

def load_options
  options_file = File.expand_path '.rdoc_options'
  return RDoc::Options.new unless File.exist? options_file

  RDoc.load_yaml

  parse_error = if Object.const_defined? :Psych then
                  Psych::SyntaxError
                else
                  ArgumentError
                end

  begin
    options = YAML.load_file '.rdoc_options'
  rescue *parse_error
  end

  raise RDoc::Error, "#{options_file} is not a valid rdoc options file" unless
    RDoc::Options === options

  options
end

#normalized_file_list(relative_files, force_doc = false, exclude_pattern = nil) ⇒ Object

Given a list of files and directories, create a list of all the Ruby files they contain.

If force_doc is true we always add the given files, if false, only add files that we guarantee we can parse. It is true when looking at files given on the command line, false when recursing through subdirectories.

The effect of this is that if you want a file with a non-standard extension parsed, you must name it explicitly.



287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
 
# File 'lib/rdoc/rdoc.rb', line 287

def normalized_file_list(relative_files, force_doc = false,
                         exclude_pattern = nil)
  file_list = []

  relative_files.each do |rel_file_name|
    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
      next if 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.sub(/^\.\//, '')
        @last_modified[rel_file_name] = stat.mtime
      end
    when "directory" then
      next if rel_file_name == "CVS" || rel_file_name == ".svn"

      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 << parse_dot_doc_file(rel_file_name, dot_doc)
      else
        file_list << list_files_in_directory(rel_file_name)
      end
    else
      warn "rdoc can't parse the #{type} #{rel_file_name}"
    end
  end

  file_list.flatten
end

#output_flag_file(op_dir) ⇒ Object

Return the path name of the flag file in an output directory.



252
253
254
 
# File 'lib/rdoc/rdoc.rb', line 252

def output_flag_file(op_dir)
  File.join op_dir, "created.rid"
end

#parse_dot_doc_file(in_dir, filename) ⇒ Object

The .document file contains a list of file and directory name patterns, representing candidates for documentation. It may also contain comments (starting with ‘#’)



261
262
263
264
265
266
267
268
269
270
271
272
273
 
# File 'lib/rdoc/rdoc.rb', line 261

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.concat normalized_file_list(candidates)
  end

  result
end

#parse_file(filename) ⇒ Object

Parses filename and returns an RDoc::TopLevel



341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
 
# File 'lib/rdoc/rdoc.rb', line 341

def parse_file filename
  if Object.const_defined? :Encoding then
    encoding = @options.encoding
    filename = filename.encode encoding
  end

  @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_path.to_s

  parser = RDoc::Parser.for top_level, filename, 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
  nil
end

#parse_files(files) ⇒ Object

Parse each file on the command line, recursively entering directories.



415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
 
# File 'lib/rdoc/rdoc.rb', line 415

def parse_files files
  file_list = gather_files files
  @stats = RDoc::Stats.new @store, file_list.length, @options.verbosity

  return [] if file_list.empty?

  @stats.begin_adding

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

  @stats.done_adding

  file_info
end

#remove_siginfo_handler ⇒ Object

Removes a siginfo handler and replaces the previous



542
543
544
545
546
547
548
 
# File 'lib/rdoc/rdoc.rb', line 542

def remove_siginfo_handler
  return unless Signal.list.key? 'INFO'

  handler = @old_siginfo || 'DEFAULT'

  trap 'INFO', handler
end

#remove_unparseable(files) ⇒ Object

Removes file extensions known to be unparseable from files and TAGS files for emacs and vim.



437
438
439
440
441
442
443
444
445
 
# File 'lib/rdoc/rdoc.rb', line 437

def remove_unparseable files
  files.reject do |file|
    file =~ /\.(?:class|eps|erb|scpt\.txt|ttf|yml)$/i or
      (file =~ /tags$/i and
       open(file, 'rb') { |io|
         io.read(100) =~ /\A(\f\n[^,]+,\d+$|!_TAG_)/
       })
  end
end

#setup_output_dir(dir, force) ⇒ Object

Create an output dir if it doesn’t exist. If it does exist, but doesn’t contain the flag file created.rid then we refuse to use it, as we may clobber some manually generated documentation



185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
 
# File 'lib/rdoc/rdoc.rb', line 185

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
      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

#update_output_dir(op_dir, time, last = {}) ⇒ Object

Update the flag file in an output directory.



238
239
240
241
242
243
244
245
246
247
 
# File 'lib/rdoc/rdoc.rb', line 238

def update_output_dir(op_dir, time, last = {})
  return if @options.dry_run or not @options.update_output_dir

  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