Class: Gem::SpecFetcher
- Inherits:
-
Object
- Object
- Gem::SpecFetcher
- Includes:
- Text, UserInteraction
- Defined in:
- lib/rubygems/spec_fetcher.rb
Overview
SpecFetcher handles metadata updates from remote gem repositories.
Instance Attribute Summary collapse
-
#latest_specs ⇒ Object
readonly
Cache of latest specs.
-
#prerelease_specs ⇒ Object
readonly
Cache of prerelease specs.
-
#specs ⇒ Object
readonly
Cache of all released specs.
Class Method Summary collapse
Instance Method Summary collapse
-
#available_specs(type) ⇒ Object
Returns a list of gems available for each source in Gem::sources.
-
#detect(type = :complete) ⇒ Object
Return all gem name tuples who’s names match
obj
. -
#initialize ⇒ SpecFetcher
constructor
A new instance of SpecFetcher.
-
#search_for_dependency(dependency, matching_platform = true) ⇒ Object
Find and fetch gem name tuples that match
dependency
. -
#spec_for_dependency(dependency, matching_platform = true) ⇒ Object
Find and fetch specs that match
dependency
. -
#suggest_gems_from_name(gem_name) ⇒ Object
Suggests gems based on the supplied
gem_name
. - #tuples_for(source, type, gracefully_ignore = false) ⇒ Object
Methods included from Text
#format_text, #levenshtein_distance
Methods included from UserInteraction
#alert, #alert_error, #alert_warning, #ask, #ask_for_password, #ask_yes_no, #choose_from_list, #say, #terminate_interaction
Methods included from DefaultUserInteraction
ui, #ui, ui=, #ui=, use_ui, #use_ui
Constructor Details
#initialize ⇒ SpecFetcher
Returns a new instance of SpecFetcher.
40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 |
# File 'lib/rubygems/spec_fetcher.rb', line 40 def initialize @dir = File.join Gem.user_home, '.gem', 'specs' @update_cache = begin File.stat(Gem.user_home).uid == Process.uid rescue Errno::EACCES, Errno::ENOENT false end @specs = {} @latest_specs = {} @prerelease_specs = {} @caches = { :latest => @latest_specs, :prerelease => @prerelease_specs, :released => @specs, } @fetcher = Gem::RemoteFetcher.fetcher end |
Instance Attribute Details
#latest_specs ⇒ Object (readonly)
Cache of latest specs
18 19 20 |
# File 'lib/rubygems/spec_fetcher.rb', line 18 def latest_specs @latest_specs end |
#prerelease_specs ⇒ Object (readonly)
Cache of prerelease specs
28 29 30 |
# File 'lib/rubygems/spec_fetcher.rb', line 28 def prerelease_specs @prerelease_specs end |
#specs ⇒ Object (readonly)
Cache of all released specs
23 24 25 |
# File 'lib/rubygems/spec_fetcher.rb', line 23 def specs @specs end |
Class Method Details
.fetcher ⇒ Object
32 33 34 |
# File 'lib/rubygems/spec_fetcher.rb', line 32 def self.fetcher @fetcher ||= new end |
.fetcher=(fetcher) ⇒ Object
:nodoc:
36 37 38 |
# File 'lib/rubygems/spec_fetcher.rb', line 36 def self.fetcher=(fetcher) # :nodoc: @fetcher = fetcher end |
Instance Method Details
#available_specs(type) ⇒ Object
Returns a list of gems available for each source in Gem::sources.
type
can be one of 3 values: :released => Return the list of all released specs :complete => Return the list of all specs :latest => Return the list of only the highest version of each gem :prerelease => Return the list of all prerelease only specs
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 |
# File 'lib/rubygems/spec_fetcher.rb', line 191 def available_specs(type) errors = [] list = {} Gem.sources.each_source do |source| begin names = case type when :latest tuples_for source, :latest when :released tuples_for source, :released when :complete tuples_for(source, :prerelease, true) + tuples_for(source, :released) when :prerelease tuples_for(source, :prerelease) else raise Gem::Exception, "Unknown type - :#{type}" end rescue Gem::RemoteFetcher::FetchError => e errors << Gem::SourceFetchProblem.new(source, e) else list[source] = names end end [list, errors] end |
#detect(type = :complete) ⇒ Object
Return all gem name tuples who’s names match obj
117 118 119 120 121 122 123 124 125 126 127 128 129 130 |
# File 'lib/rubygems/spec_fetcher.rb', line 117 def detect(type=:complete) tuples = [] list, _ = available_specs(type) list.each do |source, specs| specs.each do |tup| if yield(tup) tuples << [tup, source] end end end tuples end |
#search_for_dependency(dependency, matching_platform = true) ⇒ Object
Find and fetch gem name tuples that match dependency
.
If matching_platform
is false, gems for all platforms are returned.
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 |
# File 'lib/rubygems/spec_fetcher.rb', line 68 def search_for_dependency(dependency, matching_platform=true) found = {} rejected_specs = {} if dependency.prerelease? type = :complete elsif dependency.latest_version? type = :latest else type = :released end list, errors = available_specs(type) list.each do |source, specs| found[source] = specs.select do |tup| if dependency.match?(tup) if matching_platform and !Gem::Platform.match(tup.platform) pm = ( rejected_specs[dependency] ||= \ Gem::PlatformMismatch.new(tup.name, tup.version)) pm.add_platform tup.platform false else true end end end end errors += rejected_specs.values tuples = [] found.each do |source, specs| specs.each do |s| tuples << [s, source] end end tuples = tuples.sort_by { |x| x[0] } return [tuples, errors] end |
#spec_for_dependency(dependency, matching_platform = true) ⇒ Object
Find and fetch specs that match dependency
.
If matching_platform
is false, gems for all platforms are returned.
138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 |
# File 'lib/rubygems/spec_fetcher.rb', line 138 def spec_for_dependency(dependency, matching_platform=true) tuples, errors = search_for_dependency(dependency, matching_platform) specs = [] tuples.each do |tup, source| begin spec = source.fetch_spec(tup) rescue Gem::RemoteFetcher::FetchError => e errors << Gem::SourceFetchProblem.new(source, e) else specs << [spec, source] end end return [specs, errors] end |
#suggest_gems_from_name(gem_name) ⇒ Object
Suggests gems based on the supplied gem_name
. Returns an array of alternative gem names.
159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 |
# File 'lib/rubygems/spec_fetcher.rb', line 159 def suggest_gems_from_name gem_name gem_name = gem_name.downcase.tr('_-', '') max = gem_name.size / 2 names = available_specs(:complete).first.values.flatten(1) matches = names.map { |n| next unless n.match_platform? distance = levenshtein_distance gem_name, n.name.downcase.tr('_-', '') next if distance >= max return [n.name] if distance == 0 [n.name, distance] }.compact matches = matches.uniq.sort_by { |name, dist| dist } matches.first(5).map { |name, dist| name } end |
#tuples_for(source, type, gracefully_ignore = false) ⇒ Object
220 221 222 223 224 225 226 227 228 229 230 231 232 |
# File 'lib/rubygems/spec_fetcher.rb', line 220 def tuples_for(source, type, gracefully_ignore=false) cache = @caches[type] if gracefully_ignore begin cache[source.uri] ||= source.load_specs(type) rescue Gem::RemoteFetcher::FetchError [] end else cache[source.uri] ||= source.load_specs(type) end end |