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The SourceList represents the sources rubygems has been configured to use. A source may be created from an array of sources:
Gem::SourceList.from %w[https://rubygems.example https://internal.example]
Or by adding them:
sources = Gem::SourceList.new sources << 'https://rubygems.example'
The most common way to get a SourceList is Gem.sources.
Creates a new SourceList from an array of sources.
 
               # File rubygems/source_list.rb, line 36
def self.from(ary)
  list = new
  list.replace ary
  return list
end
             
            Creates a new SourceList
 
               # File rubygems/source_list.rb, line 24
def initialize
  @sources = []
end
             
            Appends obj to the source list which may be a Gem::Source, URI or URI String.
 
               # File rubygems/source_list.rb, line 52
def <<(obj)
  require "uri"
  src = case obj
        when URI
          Gem::Source.new(obj)
        when Gem::Source
          obj
        else
          Gem::Source.new(URI.parse(obj))
        end
  @sources << src unless @sources.include?(src)
  src
end
             
            Removes all sources from the SourceList.
 
               # File rubygems/source_list.rb, line 85
def clear
  @sources.clear
end
             
            Deletes source from the source list which may be a Gem::Source or a URI.
 
               # File rubygems/source_list.rb, line 145
def delete(source)
  if source.kind_of? Gem::Source
    @sources.delete source
  else
    @sources.delete_if { |x| x.uri.to_s == source.to_s }
  end
end
             
            Yields each source URI in the list.
 
               # File rubygems/source_list.rb, line 92
def each
  @sources.each { |s| yield s.uri.to_s }
end
             
            Yields each source in the list.
 
               # File rubygems/source_list.rb, line 99
def each_source(&b)
  @sources.each(&b)
end
             
            Returns true if there are no sources in this SourceList.
 
               # File rubygems/source_list.rb, line 106
def empty?
  @sources.empty?
end
             
            Returns the first source in the list.
 
               # File rubygems/source_list.rb, line 126
def first
  @sources.first
end
             
            Returns true if this source list includes other which may be a
Gem::Source or a source URI.
 
               # File rubygems/source_list.rb, line 134
def include?(other)
  if other.kind_of? Gem::Source
    @sources.include? other
  else
    @sources.find { |x| x.uri.to_s == other.to_s }
  end
end
             
            Replaces this SourceList with the sources in
other  See << for
acceptable items in other.
 
               # File rubygems/source_list.rb, line 72
def replace(other)
  clear
  other.each do |x|
    self << x
  end
  self
end
             
            Returns an Array of source URI Strings.
 
               # File rubygems/source_list.rb, line 117
def to_a
  @sources.map { |x| x.uri.to_s }
end