# File lib/rubygems/source_index.rb, line 75
75:     def from_gems_in(*spec_dirs)
76:       source_index = new
77:       source_index.spec_dirs = spec_dirs
78:       source_index.refresh!
79:     end

    # File lib/rubygems/source_index.rb, line 56
56:     def from_installed_gems(*deprecated)
57:       if deprecated.empty?
58:         from_gems_in(*installed_spec_directories)
59:       else
60:         from_gems_in(*deprecated) # HACK warn
61:       end
62:     end

    # File lib/rubygems/source_index.rb, line 67
67:     def installed_spec_directories
68:       Gem.path.collect { |dir| File.join(dir, "specifications") }
69:     end

     # File lib/rubygems/source_index.rb, line 85
 85:     def load_specification(file_name)
 86:       return nil unless file_name and File.exist? file_name
 87: 
 88:       spec_code = if defined? Encoding then
 89:                     File.read file_name, :encoding => 'UTF-8'
 90:                   else
 91:                     File.read file_name
 92:                   end.untaint
 93: 
 94:       begin
 95:         gemspec = eval spec_code, binding, file_name
 96: 
 97:         if gemspec.is_a?(Gem::Specification)
 98:           gemspec.loaded_from = file_name
 99:           return gemspec
100:         end
101:         alert_warning "File '#{file_name}' does not evaluate to a gem specification"
102:       rescue SignalException, SystemExit
103:         raise
104:       rescue SyntaxError => e
105:         alert_warning e
106:         alert_warning spec_code
107:       rescue Exception => e
108:         alert_warning "#{e.inspect}\n#{spec_code}"
109:         alert_warning "Invalid .gemspec format in '#{file_name}'"
110:       end
111: 
112:       return nil
113:     end

     # File lib/rubygems/source_index.rb, line 124
124:   def initialize(specifications={})
125:     @gems = {}
126:     specifications.each{ |full_name, spec| add_spec spec }
127:     @spec_dirs = nil
128:   end

     # File lib/rubygems/source_index.rb, line 215
215:   def add_spec(gem_spec, name = gem_spec.full_name)
216:     # No idea why, but the Indexer wants to insert them using original_name
217:     # instead of full_name. So we make it an optional arg.
218:     @gems[name] = gem_spec
219:   end

     # File lib/rubygems/source_index.rb, line 224
224:   def add_specs(*gem_specs)
225:     gem_specs.each do |spec|
226:       add_spec spec
227:     end
228:   end

     # File lib/rubygems/source_index.rb, line 131
131:   def all_gems
132:     @gems
133:   end

     # File lib/rubygems/source_index.rb, line 420
420:   def dump
421:     Marshal.dump(self)
422:   end

     # File lib/rubygems/source_index.rb, line 240
240:   def each(&block) # :yields: gem.full_name, gem
241:     @gems.each(&block)
242:   end

     # File lib/rubygems/source_index.rb, line 278
278:   def find_name(gem_name, version_requirement = Gem::Requirement.default)
279:     dep = Gem::Dependency.new gem_name, version_requirement
280:     search dep
281:   end

     # File lib/rubygems/source_index.rb, line 264
264:   def gem_signature(gem_full_name)
265:     require 'digest'
266: 
267:     Digest::SHA256.new.hexdigest(@gems[gem_full_name].to_yaml).to_s
268:   end

     # File lib/rubygems/source_index.rb, line 255
255:   def index_signature
256:     require 'digest'
257: 
258:     Digest::SHA256.new.hexdigest(@gems.keys.sort.join(',')).to_s
259:   end

     # File lib/rubygems/source_index.rb, line 165
165:   def latest_specs
166:     result = Hash.new { |h,k| h[k] = [] }
167:     latest = {}
168: 
169:     sort.each do |_, spec|
170:       name = spec.name
171:       curr_ver = spec.version
172:       prev_ver = latest.key?(name) ? latest[name].version : nil
173: 
174:       next if curr_ver.prerelease?
175:       next unless prev_ver.nil? or curr_ver >= prev_ver or
176:                   latest[name].platform != Gem::Platform::RUBY
177: 
178:       if prev_ver.nil? or
179:          (curr_ver > prev_ver and spec.platform == Gem::Platform::RUBY) then
180:         result[name].clear
181:         latest[name] = spec
182:       end
183: 
184:       if spec.platform != Gem::Platform::RUBY then
185:         result[name].delete_if do |result_spec|
186:           result_spec.platform == spec.platform
187:         end
188:       end
189: 
190:       result[name] << spec
191:     end
192: 
193:     # TODO: why is this a hash while @gems is an array? Seems like
194:     # structural similarity would be good.
195:     result.values.flatten
196:   end

     # File lib/rubygems/source_index.rb, line 146
146:   def load_gems_in(*spec_dirs)
147:     @gems.clear
148: 
149:     spec_dirs.reverse_each do |spec_dir|
150:       spec_files = Dir.glob File.join(spec_dir, '*.gemspec')
151: 
152:       spec_files.each do |spec_file|
153:         gemspec = self.class.load_specification spec_file.untaint
154:         add_spec gemspec if gemspec
155:       end
156:     end
157: 
158:     self
159:   end

     # File lib/rubygems/source_index.rb, line 351
351:   def outdated
352:     outdateds = []
353: 
354:     latest_specs.each do |local|
355:       dependency = Gem::Dependency.new local.name, ">= #{local.version}"
356: 
357:       begin
358:         fetcher = Gem::SpecFetcher.fetcher
359:         remotes = fetcher.find_matching dependency
360:         remotes = remotes.map { |(name, version,_),_| version }
361:       rescue Gem::RemoteFetcher::FetchError => e
362:         raise unless fetcher.warn_legacy e do
363:           require 'rubygems/source_info_cache'
364: 
365:           specs = Gem::SourceInfoCache.search_with_source dependency, true
366: 
367:           remotes = specs.map { |spec,| spec.version }
368:         end
369:       end
370: 
371:       latest = remotes.sort.last
372: 
373:       outdateds << local.name if latest and local.version < latest
374:     end
375: 
376:     outdateds
377:   end

     # File lib/rubygems/source_index.rb, line 135
135:   def prerelease_gems
136:     @gems.reject{ |name, gem| !gem.version.prerelease? }
137:   end

     # File lib/rubygems/source_index.rb, line 201
201:   def prerelease_specs
202:     prerelease_gems.values
203:   end

     # File lib/rubygems/source_index.rb, line 343
343:   def refresh!
344:     raise 'source index not created from disk' if @spec_dirs.nil?
345:     load_gems_in(*@spec_dirs)
346:   end

     # File lib/rubygems/source_index.rb, line 139
139:   def released_gems
140:     @gems.reject{ |name, gem| gem.version.prerelease? }
141:   end

     # File lib/rubygems/source_index.rb, line 208
208:   def released_specs
209:     released_gems.values
210:   end

     # File lib/rubygems/source_index.rb, line 233
233:   def remove_spec(full_name)
234:     @gems.delete full_name
235:   end

     # File lib/rubygems/source_index.rb, line 292
292:   def search(gem_pattern, platform_only = false)
293:     version_requirement = nil
294:     only_platform = false
295: 
296:     # TODO - Remove support and warning for legacy arguments after 2008/11
297:     unless Gem::Dependency === gem_pattern
298:       warn "#{Gem.location_of_caller.join ':'}:Warning: Gem::SourceIndex#search support for #{gem_pattern.class} patterns is deprecated, use #find_name"
299:     end
300: 
301:     case gem_pattern
302:     when Regexp then
303:       version_requirement = platform_only || Gem::Requirement.default
304:     when Gem::Dependency then
305:       only_platform = platform_only
306:       version_requirement = gem_pattern.requirement
307:       gem_pattern = if Regexp === gem_pattern.name then
308:                       gem_pattern.name
309:                     elsif gem_pattern.name.empty? then
310:                       //
311:                     else
312:                       /^#{Regexp.escape gem_pattern.name}$/
313:                     end
314:     else
315:       version_requirement = platform_only || Gem::Requirement.default
316:       gem_pattern = /^#{gem_pattern}/i
317:     end
318: 
319:     unless Gem::Requirement === version_requirement then
320:       version_requirement = Gem::Requirement.create version_requirement
321:     end
322: 
323:     specs = all_gems.values.select do |spec|
324:       spec.name =~ gem_pattern and
325:         version_requirement.satisfied_by? spec.version
326:     end
327: 
328:     if only_platform then
329:       specs = specs.select do |spec|
330:         Gem::Platform.match spec.platform
331:       end
332:     end
333: 
334:     specs.sort_by { |s| s.sort_obj }
335:   end

     # File lib/rubygems/source_index.rb, line 270
270:   def size
271:     @gems.size
272:   end

     # File lib/rubygems/source_index.rb, line 247
247:   def specification(full_name)
248:     @gems[full_name]
249:   end

     # File lib/rubygems/source_index.rb, line 383
383:   def update(source_uri, all)
384:     source_uri = URI.parse source_uri unless URI::Generic === source_uri
385:     source_uri.path += '/' unless source_uri.path =~ /\/$/
386: 
387:     use_incremental = false
388: 
389:     begin
390:       gem_names = fetch_quick_index source_uri, all
391:       remove_extra gem_names
392:       missing_gems = find_missing gem_names
393: 
394:       return false if missing_gems.size.zero?
395: 
396:       say "Missing metadata for #{missing_gems.size} gems" if
397:       missing_gems.size > 0 and Gem.configuration.really_verbose
398: 
399:       use_incremental = missing_gems.size <= Gem.configuration.bulk_threshold
400:     rescue Gem::OperationNotSupportedError => ex
401:       alert_error "Falling back to bulk fetch: #{ex.message}" if
402:       Gem.configuration.really_verbose
403:       use_incremental = false
404:     end
405: 
406:     if use_incremental then
407:       update_with_missing(source_uri, missing_gems)
408:     else
409:       new_index = fetch_bulk_index(source_uri)
410:       @gems.replace(new_index.gems)
411:     end
412: 
413:     true
414:   end