Methods
- ==
- add_frozen_gem_path
- add_load_paths
- build
- built?
- dependencies
- framework_gem?
- from_directory_name
- frozen?
- install
- installed?
- load
- load_paths_added?
- loaded?
- new
- refresh
- specification
- specification=
- unpack
- unpacked_path
- vendor_gem?
- vendor_rails?
- write_specification
Attributes
[RW] | dep | |
[RW] | lib | |
[RW] | source |
Public Class methods
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# File railties/lib/rails/gem_dependency.rb, line 19 19: def self.add_frozen_gem_path 20: @@paths_loaded ||= begin 21: source_index = Rails::VendorGemSourceIndex.new(Gem.source_index) 22: Gem.clear_paths 23: Gem.source_index = source_index 24: # loaded before us - we can't change them, so mark them 25: Gem.loaded_specs.each do |name, spec| 26: @@framework_gems[name] = spec 27: end 28: true 29: end 30: end
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# File railties/lib/rails/gem_dependency.rb, line 32 32: def self.from_directory_name(directory_name, load_spec=true) 33: directory_name_parts = File.basename(directory_name).split('-') 34: 35: version = directory_name_parts.find { |s| s.match(/^\d(\.\d|\.\w+)*$/) } 36: name = directory_name_parts[0..directory_name_parts.index(version)-1].join('-') if version 37: 38: result = self.new(name, :version => version) 39: spec_filename = File.join(directory_name, '.specification') 40: if load_spec 41: raise "Missing specification file in #{File.dirname(spec_filename)}. Perhaps you need to do a 'rake gems:refresh_specs'\?" unless File.exists?(spec_filename) 42: spec = YAML::load_file(spec_filename) 43: result.specification = spec 44: end 45: result 46: rescue ArgumentError => e 47: raise "Unable to determine gem name and version from '#{directory_name}'" 48: end
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# File railties/lib/rails/gem_dependency.rb, line 50 50: def initialize(name, options = {}) 51: require 'rubygems' unless Object.const_defined?(:Gem) 52: 53: if options[:requirement] 54: req = options[:requirement] 55: elsif options[:version] 56: req = Gem::Requirement.create(options[:version]) 57: else 58: req = Gem::Requirement.default 59: end 60: 61: @lib = options[:lib] 62: @source = options[:source] 63: @loaded = @frozen = @load_paths_added = false 64: 65: super(name, req) 66: end
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# File railties/lib/rails/gem_dependency.rb, line 13 13: def self.unpacked_path 14: @unpacked_path ||= File.join(RAILS_ROOT, 'vendor', 'gems') 15: end
Public Instance methods
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# File railties/lib/rails/gem_dependency.rb, line 272 272: def ==(other) 273: Gem::Dependency === other.class && 274: self.name == other.name && self.requirement == other.requirement 275: end
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# File railties/lib/rails/gem_dependency.rb, line 68 68: def add_load_paths 69: self.class.add_frozen_gem_path 70: return if @loaded || @load_paths_added 71: if framework_gem? 72: @load_paths_added = @loaded = @frozen = true 73: return 74: end 75: 76: begin 77: dep = Gem::Dependency.new(name, requirement) 78: spec = Gem.source_index.find { |_,s| s.satisfies_requirement?(dep) }.last 79: spec.activate # a way that exists 80: rescue 81: gem self.name, self.requirement # < 1.8 unhappy way 82: end 83: 84: @spec = Gem.loaded_specs[name] 85: @frozen = @spec.loaded_from.include?(self.class.unpacked_path) if @spec 86: @load_paths_added = true 87: rescue Gem::LoadError 88: end
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# File railties/lib/rails/gem_dependency.rb, line 191 191: def build(options={}) 192: require 'rails/gem_builder' 193: return if specification.nil? 194: if options[:force] || !built? 195: return unless File.exists?(unpacked_specification_filename) 196: spec = YAML::load_file(unpacked_specification_filename) 197: Rails::GemBuilder.new(spec, unpacked_gem_directory).build_extensions 198: puts "Built gem: '#{unpacked_gem_directory}'" 199: end 200: dependencies.each { |dep| dep.build(options) } 201: end
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# File railties/lib/rails/gem_dependency.rb, line 128 128: def built? 129: return false unless frozen? 130: 131: if vendor_gem? 132: specification.extensions.each do |ext| 133: makefile = File.join(unpacked_gem_directory, File.dirname(ext), 'Makefile') 134: return false unless File.exists?(makefile) 135: end 136: end 137: 138: true 139: end
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# File railties/lib/rails/gem_dependency.rb, line 90 90: def dependencies 91: return [] if framework_gem? 92: return [] unless installed? 93: specification.dependencies.reject do |dependency| 94: dependency.type == :development 95: end.map do |dependency| 96: GemDependency.new(dependency.name, :requirement => (dependency.respond_to?(:requirement) ? dependency.requirement : dependency.version_requirements)) 97: end 98: end
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# File railties/lib/rails/gem_dependency.rb, line 141 141: def framework_gem? 142: @@framework_gems.has_key?(name) 143: end
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# File railties/lib/rails/gem_dependency.rb, line 145 145: def frozen? 146: @frozen ||= vendor_rails? || vendor_gem? 147: end
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# File railties/lib/rails/gem_dependency.rb, line 203 203: def install 204: unless installed? 205: cmd = "#{gem_command} #{install_command.join(' ')}" 206: puts cmd 207: puts %x(#{cmd}) 208: end 209: end
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# File railties/lib/rails/gem_dependency.rb, line 149 149: def installed? 150: Gem.loaded_specs.keys.include?(name) 151: end
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# File railties/lib/rails/gem_dependency.rb, line 211 211: def load 212: return if @loaded || @load_paths_added == false 213: require(@lib || name) unless @lib == false 214: @loaded = true 215: rescue LoadError 216: puts $!.to_s 217: $!.backtrace.each { |b| puts b } 218: end
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# File railties/lib/rails/gem_dependency.rb, line 153 153: def load_paths_added? 154: # always try to add load paths - even if a gem is loaded, it may not 155: # be a compatible version (ie random_gem 0.4 is loaded and a later spec 156: # needs >= 0.5 - gem 'random_gem' will catch this and error out) 157: @load_paths_added 158: end
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# File railties/lib/rails/gem_dependency.rb, line 160 160: def loaded? 161: @loaded ||= begin 162: if vendor_rails? 163: true 164: elsif specification.nil? 165: false 166: else 167: # check if the gem is loaded by inspecting $" 168: # specification.files lists all the files contained in the gem 169: gem_files = specification.files 170: # select only the files contained in require_paths - typically in bin and lib 171: require_paths_regexp = Regexp.new("^(#{specification.require_paths*'|'})/") 172: gem_lib_files = gem_files.select { |f| require_paths_regexp.match(f) } 173: # chop the leading directory off - a typical file might be in 174: # lib/gem_name/file_name.rb, but it will be 'require'd as gem_name/file_name.rb 175: gem_lib_files.map! { |f| f.split('/', 2)[1] } 176: # if any of the files from the above list appear in $", the gem is assumed to 177: # have been loaded 178: !(gem_lib_files & $").empty? 179: end 180: end 181: end
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# File railties/lib/rails/gem_dependency.rb, line 220 220: def refresh 221: Rails::VendorGemSourceIndex.silence_spec_warnings = true 222: real_gems = Gem.source_index.installed_source_index 223: exact_dep = Gem::Dependency.new(name, "= #{specification.version}") 224: matches = real_gems.search(exact_dep) 225: installed_spec = matches.first 226: if frozen? 227: if installed_spec 228: # we have a real copy 229: # get a fresh spec - matches should only have one element 230: # note that there is no reliable method to check that the loaded 231: # spec is the same as the copy from real_gems - Gem.activate changes 232: # some of the fields 233: real_spec = Gem::Specification.load(matches.first.loaded_from) 234: write_specification(real_spec) 235: puts "Reloaded specification for #{name} from installed gems." 236: else 237: # the gem isn't installed locally - write out our current specs 238: write_specification(specification) 239: puts "Gem #{name} not loaded locally - writing out current spec." 240: end 241: else 242: if framework_gem? 243: puts "Gem directory for #{name} not found - check if it's loading before rails." 244: else 245: puts "Something bad is going on - gem directory not found for #{name}." 246: end 247: end 248: end
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# File railties/lib/rails/gem_dependency.rb, line 100 100: def specification 101: # code repeated from Gem.activate. Find a matching spec, or the currently loaded version. 102: # error out if loaded version and requested version are incompatible. 103: @spec ||= begin 104: matches = Gem.source_index.search(self) 105: matches << @@framework_gems[name] if framework_gem? 106: if Gem.loaded_specs[name] then 107: # This gem is already loaded. If the currently loaded gem is not in the 108: # list of candidate gems, then we have a version conflict. 109: existing_spec = Gem.loaded_specs[name] 110: unless matches.any? { |spec| spec.version == existing_spec.version } then 111: raise Gem::Exception, 112: "can't activate #{@dep}, already activated #{existing_spec.full_name}" 113: end 114: # we're stuck with it, so change to match 115: version_requirements = Gem::Requirement.create("=#{existing_spec.version}") 116: existing_spec 117: else 118: # new load 119: matches.last 120: end 121: end 122: end
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# File railties/lib/rails/gem_dependency.rb, line 124 124: def specification=(s) 125: @spec = s 126: end
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# File railties/lib/rails/gem_dependency.rb, line 250 250: def unpack(options={}) 251: unless frozen? || framework_gem? 252: FileUtils.mkdir_p unpack_base 253: Dir.chdir unpack_base do 254: Gem::GemRunner.new.run(unpack_command) 255: end 256: # Gem.activate changes the spec - get the original 257: real_spec = Gem::Specification.load(specification.loaded_from) 258: write_specification(real_spec) 259: end 260: dependencies.each { |dep| dep.unpack(options) } if options[:recursive] 261: end
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# File railties/lib/rails/gem_dependency.rb, line 187 187: def vendor_gem? 188: specification && File.exists?(unpacked_gem_directory) 189: end
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# File railties/lib/rails/gem_dependency.rb, line 183 183: def vendor_rails? 184: Gem.loaded_specs.has_key?(name) && Gem.loaded_specs[name].loaded_from.empty? 185: end
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# File railties/lib/rails/gem_dependency.rb, line 263 263: def write_specification(spec) 264: # copy the gem's specification into GEMDIR/.specification so that 265: # we can access information about the gem on deployment systems 266: # without having the gem installed 267: File.open(unpacked_specification_filename, 'w') do |file| 268: file.puts spec.to_yaml 269: end 270: end