summaryrefslogtreecommitdiff
path: root/jni/ruby/lib/rubygems/indexer.rb
blob: f94fb1bcb83148047306ff38cf1345d1b51b191a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
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
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
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
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
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
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
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
require 'rubygems'
require 'rubygems/package'
require 'time'

begin
  gem 'builder'
  require 'builder/xchar'
rescue LoadError
end

##
# Top level class for building the gem repository index.

class Gem::Indexer

  include Gem::UserInteraction

  ##
  # Build indexes for RubyGems 1.2.0 and newer when true

  attr_accessor :build_modern

  ##
  # Index install location

  attr_reader :dest_directory

  ##
  # Specs index install location

  attr_reader :dest_specs_index

  ##
  # Latest specs index install location

  attr_reader :dest_latest_specs_index

  ##
  # Prerelease specs index install location

  attr_reader :dest_prerelease_specs_index

  ##
  # Index build directory

  attr_reader :directory

  ##
  # Create an indexer that will index the gems in +directory+.

  def initialize(directory, options = {})
    require 'fileutils'
    require 'tmpdir'
    require 'zlib'

    unless defined?(Builder::XChar) then
      raise "Gem::Indexer requires that the XML Builder library be installed:" +
            "\n\tgem install builder"
    end

    options = { :build_modern => true }.merge options

    @build_modern = options[:build_modern]

    @dest_directory = directory
    @directory = File.join(Dir.tmpdir, "gem_generate_index_#{$$}")

    marshal_name = "Marshal.#{Gem.marshal_version}"

    @master_index = File.join @directory, 'yaml'
    @marshal_index = File.join @directory, marshal_name

    @quick_dir = File.join @directory, 'quick'
    @quick_marshal_dir = File.join @quick_dir, marshal_name
    @quick_marshal_dir_base = File.join "quick", marshal_name # FIX: UGH

    @quick_index = File.join @quick_dir, 'index'
    @latest_index = File.join @quick_dir, 'latest_index'

    @specs_index = File.join @directory, "specs.#{Gem.marshal_version}"
    @latest_specs_index =
      File.join(@directory, "latest_specs.#{Gem.marshal_version}")
    @prerelease_specs_index =
      File.join(@directory, "prerelease_specs.#{Gem.marshal_version}")
    @dest_specs_index =
      File.join(@dest_directory, "specs.#{Gem.marshal_version}")
    @dest_latest_specs_index =
      File.join(@dest_directory, "latest_specs.#{Gem.marshal_version}")
    @dest_prerelease_specs_index =
      File.join(@dest_directory, "prerelease_specs.#{Gem.marshal_version}")

    @files = []
  end

  ##
  # Abbreviate the spec for downloading.  Abbreviated specs are only used for
  # searching, downloading and related activities and do not need deployment
  # specific information (e.g. list of files).  So we abbreviate the spec,
  # making it much smaller for quicker downloads.
  #--
  # TODO move to Gem::Specification

  def abbreviate(spec)
    spec.files = []
    spec.test_files = []
    spec.rdoc_options = []
    spec.extra_rdoc_files = []
    spec.cert_chain = []
    spec
  end

  ##
  # Build various indicies

  def build_indicies
    Gem::Specification.dirs = []
    Gem::Specification.add_specs(*map_gems_to_specs(gem_file_list))

    build_marshal_gemspecs
    build_modern_indicies if @build_modern

    compress_indicies
  end

  ##
  # Builds Marshal quick index gemspecs.

  def build_marshal_gemspecs
    count = Gem::Specification.count { |s| not s.default_gem? }
    progress = ui.progress_reporter count,
                                    "Generating Marshal quick index gemspecs for #{count} gems",
                                    "Complete"

    files = []

    Gem.time 'Generated Marshal quick index gemspecs' do
      Gem::Specification.each do |spec|
        next if spec.default_gem?
        spec_file_name = "#{spec.original_name}.gemspec.rz"
        marshal_name = File.join @quick_marshal_dir, spec_file_name

        marshal_zipped = Gem.deflate Marshal.dump(spec)
        open marshal_name, 'wb' do |io| io.write marshal_zipped end

        files << marshal_name

        progress.updated spec.original_name
      end

      progress.done
    end

    @files << @quick_marshal_dir

    files
  end

  ##
  # Build a single index for RubyGems 1.2 and newer

  def build_modern_index(index, file, name)
    say "Generating #{name} index"

    Gem.time "Generated #{name} index" do
      open(file, 'wb') do |io|
        specs = index.map do |*spec|
          # We have to splat here because latest_specs is an array, while the
          # others are hashes.
          spec = spec.flatten.last
          platform = spec.original_platform

          # win32-api-1.0.4-x86-mswin32-60
          unless String === platform then
            alert_warning "Skipping invalid platform in gem: #{spec.full_name}"
            next
          end

          platform = Gem::Platform::RUBY if platform.nil? or platform.empty?
          [spec.name, spec.version, platform]
        end

        specs = compact_specs(specs)
        Marshal.dump(specs, io)
      end
    end
  end

  ##
  # Builds indicies for RubyGems 1.2 and newer. Handles full, latest, prerelease

  def build_modern_indicies
    specs = Gem::Specification.reject { |s| s.default_gem? }

    prerelease, released = specs.partition { |s|
      s.version.prerelease?
    }
    latest_specs =
      Gem::Specification.latest_specs.reject { |s| s.default_gem? }

    build_modern_index(released.sort, @specs_index, 'specs')
    build_modern_index(latest_specs.sort, @latest_specs_index, 'latest specs')
    build_modern_index(prerelease.sort, @prerelease_specs_index,
                       'prerelease specs')

    @files += [@specs_index,
               "#{@specs_index}.gz",
               @latest_specs_index,
               "#{@latest_specs_index}.gz",
               @prerelease_specs_index,
               "#{@prerelease_specs_index}.gz"]
  end

  def map_gems_to_specs gems
    gems.map { |gemfile|
      if File.size(gemfile) == 0 then
        alert_warning "Skipping zero-length gem: #{gemfile}"
        next
      end

      begin
        spec = Gem::Package.new(gemfile).spec
        spec.loaded_from = gemfile

        # HACK: fuck this shit - borks all tests that use pl1
        # if File.basename(gemfile, ".gem") != spec.original_name then
        #   exp = spec.full_name
        #   exp << " (#{spec.original_name})" if
        #     spec.original_name != spec.full_name
        #   msg = "Skipping misnamed gem: #{gemfile} should be named #{exp}"
        #   alert_warning msg
        #   next
        # end

        abbreviate spec
        sanitize spec

        spec
      rescue SignalException
        alert_error "Received signal, exiting"
        raise
      rescue Exception => e
        msg = ["Unable to process #{gemfile}",
               "#{e.message} (#{e.class})",
               "\t#{e.backtrace.join "\n\t"}"].join("\n")
        alert_error msg
      end
    }.compact
  end

  ##
  # Compresses indicies on disk
  #--
  # All future files should be compressed using gzip, not deflate

  def compress_indicies
    say "Compressing indicies"

    Gem.time 'Compressed indicies' do
      if @build_modern then
        gzip @specs_index
        gzip @latest_specs_index
        gzip @prerelease_specs_index
      end
    end
  end

  ##
  # Compacts Marshal output for the specs index data source by using identical
  # objects as much as possible.

  def compact_specs(specs)
    names = {}
    versions = {}
    platforms = {}

    specs.map do |(name, version, platform)|
      names[name] = name unless names.include? name
      versions[version] = version unless versions.include? version
      platforms[platform] = platform unless platforms.include? platform

      [names[name], versions[version], platforms[platform]]
    end
  end

  ##
  # Compress +filename+ with +extension+.

  def compress(filename, extension)
    data = Gem.read_binary filename

    zipped = Gem.deflate data

    open "#{filename}.#{extension}", 'wb' do |io|
      io.write zipped
    end
  end

  ##
  # List of gem file names to index.

  def gem_file_list
    Dir[File.join(@dest_directory, "gems", '*.gem')]
  end

  ##
  # Builds and installs indicies.

  def generate_index
    make_temp_directories
    build_indicies
    install_indicies
  rescue SignalException
  ensure
    FileUtils.rm_rf @directory
  end

  ##
  # Zlib::GzipWriter wrapper that gzips +filename+ on disk.

  def gzip(filename)
    Zlib::GzipWriter.open "#{filename}.gz" do |io|
      io.write Gem.read_binary(filename)
    end
  end

  ##
  # Install generated indicies into the destination directory.

  def install_indicies
    verbose = Gem.configuration.really_verbose

    say "Moving index into production dir #{@dest_directory}" if verbose

    files = @files
    files.delete @quick_marshal_dir if files.include? @quick_dir

    if files.include? @quick_marshal_dir and not files.include? @quick_dir then
      files.delete @quick_marshal_dir

      dst_name = File.join(@dest_directory, @quick_marshal_dir_base)

      FileUtils.mkdir_p File.dirname(dst_name), :verbose => verbose
      FileUtils.rm_rf dst_name, :verbose => verbose
      FileUtils.mv(@quick_marshal_dir, dst_name,
                   :verbose => verbose, :force => true)
    end

    files = files.map do |path|
      path.sub(/^#{Regexp.escape @directory}\/?/, '') # HACK?
    end

    files.each do |file|
      src_name = File.join @directory, file
      dst_name = File.join @dest_directory, file

      FileUtils.rm_rf dst_name, :verbose => verbose
      FileUtils.mv(src_name, @dest_directory,
                   :verbose => verbose, :force => true)
    end
  end

  ##
  # Make directories for index generation

  def make_temp_directories
    FileUtils.rm_rf @directory
    FileUtils.mkdir_p @directory, :mode => 0700
    FileUtils.mkdir_p @quick_marshal_dir
  end

  ##
  # Ensure +path+ and path with +extension+ are identical.

  def paranoid(path, extension)
    data = Gem.read_binary path
    compressed_data = Gem.read_binary "#{path}.#{extension}"

    unless data == Gem.inflate(compressed_data) then
      raise "Compressed file #{compressed_path} does not match uncompressed file #{path}"
    end
  end

  ##
  # Sanitize the descriptive fields in the spec.  Sometimes non-ASCII
  # characters will garble the site index.  Non-ASCII characters will
  # be replaced by their XML entity equivalent.

  def sanitize(spec)
    spec.summary              = sanitize_string(spec.summary)
    spec.description          = sanitize_string(spec.description)
    spec.post_install_message = sanitize_string(spec.post_install_message)
    spec.authors              = spec.authors.collect { |a| sanitize_string(a) }

    spec
  end

  ##
  # Sanitize a single string.

  def sanitize_string(string)
    return string unless string

    # HACK the #to_s is in here because RSpec has an Array of Arrays of
    # Strings for authors.  Need a way to disallow bad values on gemspec
    # generation.  (Probably won't happen.)
    string = string.to_s

    begin
      Builder::XChar.encode string
    rescue NameError, NoMethodError
      string.to_xs
    end
  end

  ##
  # Perform an in-place update of the repository from newly added gems.

  def update_index
    make_temp_directories

    specs_mtime = File.stat(@dest_specs_index).mtime
    newest_mtime = Time.at 0

    updated_gems = gem_file_list.select do |gem|
      gem_mtime = File.stat(gem).mtime
      newest_mtime = gem_mtime if gem_mtime > newest_mtime
      gem_mtime >= specs_mtime
    end

    if updated_gems.empty? then
      say 'No new gems'
      terminate_interaction 0
    end

    specs = map_gems_to_specs updated_gems
    prerelease, released = specs.partition { |s| s.version.prerelease? }

    Gem::Specification.dirs = []
    Gem::Specification.add_specs(*specs)

    files = build_marshal_gemspecs

    Gem.time 'Updated indexes' do
      update_specs_index released, @dest_specs_index, @specs_index
      update_specs_index released, @dest_latest_specs_index, @latest_specs_index
      update_specs_index(prerelease,
                         @dest_prerelease_specs_index,
                         @prerelease_specs_index)
    end

    compress_indicies

    verbose = Gem.configuration.really_verbose

    say "Updating production dir #{@dest_directory}" if verbose

    files << @specs_index
    files << "#{@specs_index}.gz"
    files << @latest_specs_index
    files << "#{@latest_specs_index}.gz"
    files << @prerelease_specs_index
    files << "#{@prerelease_specs_index}.gz"

    files = files.map do |path|
      path.sub(/^#{Regexp.escape @directory}\/?/, '') # HACK?
    end

    files.each do |file|
      src_name = File.join @directory, file
      dst_name = File.join @dest_directory, file # REFACTOR: duped above

      FileUtils.mv src_name, dst_name, :verbose => verbose,
                   :force => true

      File.utime newest_mtime, newest_mtime, dst_name
    end
  end

  ##
  # Combines specs in +index+ and +source+ then writes out a new copy to
  # +dest+.  For a latest index, does not ensure the new file is minimal.

  def update_specs_index(index, source, dest)
    specs_index = Marshal.load Gem.read_binary(source)

    index.each do |spec|
      platform = spec.original_platform
      platform = Gem::Platform::RUBY if platform.nil? or platform.empty?
      specs_index << [spec.name, spec.version, platform]
    end

    specs_index = compact_specs specs_index.uniq.sort

    open dest, 'wb' do |io|
      Marshal.dump specs_index, io
    end
  end
end