Class: Gem::BasicSpecification

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

Overview

BasicSpecification is an abstract class which implements some common code used by both Specification and StubSpecification.

Direct Known Subclasses

Specification, StubSpecification

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#base_dir ⇒ Object

Returns the full path to the base gem directory.

eg: /usr/local/lib/ruby/gems/1.8



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# File 'lib/rubygems/basic_specification.rb', line 48

def base_dir
  return Gem.dir unless loaded_from
  @base_dir ||= if default_gem? then
                  File.dirname File.dirname File.dirname loaded_from
                else
                  File.dirname File.dirname loaded_from
                end
end

#extension_dir ⇒ Object

Returns full path to the directory where gem’s extensions are installed.



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# File 'lib/rubygems/basic_specification.rb', line 93

def extension_dir
  @extension_dir ||= File.expand_path File.join(extensions_dir, full_name)
end

#full_gem_path ⇒ Object

The full path to the gem (install path + full name).



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# File 'lib/rubygems/basic_specification.rb', line 118

def full_gem_path
  # TODO: This is a heavily used method by gems, so we'll need
  # to aleast just alias it to #gem_dir rather than remove it.
  @full_gem_path ||= find_full_gem_path
end

#ignored=(value) ⇒ Object (writeonly)

Is this specification ignored for activation purposes?



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# File 'lib/rubygems/basic_specification.rb', line 20

def ignored=(value)
  @ignored = value
end

#loaded_from ⇒ Object

The path this gemspec was loaded from. This attribute is not persisted.



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# File 'lib/rubygems/basic_specification.rb', line 25

def loaded_from
  @loaded_from
end

Class Method Details

.default_specifications_dir ⇒ Object 



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# File 'lib/rubygems/basic_specification.rb', line 32

def self.default_specifications_dir
  File.join(Gem.default_dir, "specifications", "default")
end

Instance Method Details

#activated? ⇒ Boolean

True when the gem has been activated

Raises:

  • (NotImplementedError) 


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# File 'lib/rubygems/basic_specification.rb', line 39

def activated?
  raise NotImplementedError
end

#contains_requirable_file?(file) ⇒ Boolean

Return true if this spec can require file.



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# File 'lib/rubygems/basic_specification.rb', line 60

def contains_requirable_file? file
  @contains_requirable_file ||= {}
  @contains_requirable_file[file] ||=
  begin
    if instance_variable_defined?(:@ignored) or
       instance_variable_defined?('@ignored') then
      return false
    elsif missing_extensions? then
      @ignored = true

      warn "Ignoring #{full_name} because its extensions are not built.  " +
           "Try: gem pristine #{name} --version #{version}"
      return false
    end

    suffixes = Gem.suffixes

    full_require_paths.any? do |dir|
      base = "#{dir}/#{file}"
      suffixes.any? { |suf| File.file? "#{base}#{suf}" }
    end
  end ? :yes : :no
  @contains_requirable_file[file] == :yes
end

#default_gem? ⇒ Boolean 



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# File 'lib/rubygems/basic_specification.rb', line 85

def default_gem?
  loaded_from &&
    File.dirname(loaded_from) == self.class.default_specifications_dir
end

#extensions_dir ⇒ Object

Returns path to the extensions directory.



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# File 'lib/rubygems/basic_specification.rb', line 100

def extensions_dir
  @extensions_dir ||= Gem.default_ext_dir_for(base_dir) ||
    File.join(base_dir, 'extensions', Gem::Platform.local.to_s,
              Gem.extension_api_version)
end

#full_name ⇒ Object

Returns the full name (name-version) of this Gem. Platform information is included (name-version-platform) if it is specified and not the default Ruby platform.



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# File 'lib/rubygems/basic_specification.rb', line 129

def full_name
  if platform == Gem::Platform::RUBY or platform.nil? then
    "#{name}-#{version}".untaint
  else
    "#{name}-#{version}-#{platform}".untaint
  end
end

#full_require_paths ⇒ Object

Full paths in the gem to add to $LOAD_PATH when this gem is activated.



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# File 'lib/rubygems/basic_specification.rb', line 141

def full_require_paths
  @full_require_paths ||=
  begin
    full_paths = raw_require_paths.map do |path|
      File.join full_gem_path, path
    end

    full_paths.unshift extension_dir unless @extensions.nil? || @extensions.empty?

    full_paths
  end
end

#gem_dir ⇒ Object

Returns the full path to this spec’s gem directory. eg: /usr/local/lib/ruby/1.8/gems/mygem-1.0



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# File 'lib/rubygems/basic_specification.rb', line 180

def gem_dir
  @gem_dir ||= File.expand_path File.join(gems_dir, full_name)
end

#gems_dir ⇒ Object

Returns the full path to the gems directory containing this spec’s gem directory. eg: /usr/local/lib/ruby/1.8/gems



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# File 'lib/rubygems/basic_specification.rb', line 188

def gems_dir
  # TODO: this logic seems terribly broken, but tests fail if just base_dir
  @gems_dir ||= File.join(loaded_from && base_dir || Gem.dir, "gems")
end

#name ⇒ Object

Name of the gem

Raises:

  • (NotImplementedError) 


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# File 'lib/rubygems/basic_specification.rb', line 211

def name
  raise NotImplementedError
end

#platform ⇒ Object

Platform of the gem

Raises:

  • (NotImplementedError) 


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# File 'lib/rubygems/basic_specification.rb', line 218

def platform
  raise NotImplementedError
end

#raw_require_paths ⇒ Object

:nodoc:



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# File 'lib/rubygems/basic_specification.rb', line 222

def raw_require_paths # :nodoc:
  Array(@require_paths)
end

#require_paths ⇒ Object

Paths in the gem to add to $LOAD_PATH when this gem is activated.

See also #require_paths=

If you have an extension you do not need to add "ext" to the require path, the extension build process will copy the extension files into “lib” for you.

The default value is "lib"

Usage:

# If all library files are in the root directory...
spec.require_path = '.'



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# File 'lib/rubygems/basic_specification.rb', line 243

def require_paths
  return raw_require_paths if @extensions.nil? || @extensions.empty?

  [extension_dir].concat raw_require_paths
end

#source_paths ⇒ Object

Returns the paths to the source files for use with analysis and documentation tools. These paths are relative to full_gem_path.



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# File 'lib/rubygems/basic_specification.rb', line 253

def source_paths
  paths = raw_require_paths.dup

  if @extensions then
    ext_dirs = @extensions.map do |extension|
      extension.split(File::SEPARATOR, 2).first
    end.uniq

    paths.concat ext_dirs
  end

  paths.uniq
end

#stubbed? ⇒ Boolean

Whether this specification is stubbed - i.e. we have information about the gem from a stub line, without having to evaluate the entire gemspec file.

Raises:

  • (NotImplementedError) 


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# File 'lib/rubygems/basic_specification.rb', line 285

def stubbed?
  raise NotImplementedError
end

#to_fullpath(path) ⇒ Object

Full path of the target library file. If the file is not in this gem, return nil.



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# File 'lib/rubygems/basic_specification.rb', line 158

def to_fullpath path
  if activated? then
    @paths_map ||= {}
    @paths_map[path] ||=
    begin
      fullpath = nil
      suffixes = Gem.suffixes
      full_require_paths.find do |dir|
        suffixes.find do |suf|
          File.file?(fullpath = "#{dir}/#{path}#{suf}")
        end
      end ? fullpath : nil
    end
  else
    nil
  end
end

#to_spec ⇒ Object

Return a Gem::Specification from this gem

Raises:

  • (NotImplementedError) 


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# File 'lib/rubygems/basic_specification.rb', line 270

def to_spec
  raise NotImplementedError
end

#version ⇒ Object

Version of the gem

Raises:

  • (NotImplementedError) 


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# File 'lib/rubygems/basic_specification.rb', line 277

def version
  raise NotImplementedError
end