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Class: Bundler::CompactIndexClient::Parser

Relationships & Source Files
Inherits: Object
Defined in: lib/bundler/compact_index_client/parser.rb

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(compact_index) ⇒ Parser

compact_index - an object responding to #names, #versions, #info(name, checksum),

returning the file contents as a string
[ GitHub ] 

  


# File 'lib/bundler/compact_index_client/parser.rb', line 8



def initialize(compact_index)
  @compact_index = compact_index
  @info_checksums = nil
  @versions_by_name = nil
  @available = nil
  @gem_parser = nil
end


  







Instance Attribute Details



  

    #available?  ⇒ Boolean  (readonly)
  

  [ GitHub ]


  

  


# File 'lib/bundler/compact_index_client/parser.rb', line 46



def available?
  return @available unless @available.nil?
  @available = !info_checksums.empty?
end


  







Instance Method Details



  

    #gem_parser   (private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/compact_index_client/parser.rb', line 66



def gem_parser
  @gem_parser ||= GemParser.new
end


  








  

    #info(name)  
  

  [ GitHub ]


  

  


# File 'lib/bundler/compact_index_client/parser.rb', line 41



def info(name)
  data = @compact_index.info(name, info_checksums[name])
  lines(data).map {|line| gem_parser.parse(line).unshift(name) }
end


  








  

    #info_checksums   (private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/compact_index_client/parser.rb', line 53



def info_checksums
  @info_checksums ||= lines(@compact_index.versions).each_with_object({}) do |line, checksums|
    parse_version_checksum(line, checksums)
  end
end


  








  

    #lines(data)   (private)
  

  [ GitHub ]


  

  


# File 'lib/bundler/compact_index_client/parser.rb', line 59



def lines(data)
  return [] if data.nil? || data.empty?
  lines = data.split("\n")
  header = lines.index("---")
  header ? lines[header + 1..-1] : lines
end


  








  

    #names  
  

  [ GitHub ]


  

  


# File 'lib/bundler/compact_index_client/parser.rb', line 16



def names
  lines(@compact_index.names)
end


  








  

    #parse_version_checksum(line, checksums)   (private)
  



  

    

This is mostly the same as split(" ", 3) but it avoids allocating extra objects. This method gets called at least once for every gem when parsing versions.


  



  [ GitHub ]


  

  


# File 'lib/bundler/compact_index_client/parser.rb', line 72



def parse_version_checksum(line, checksums)
  return unless (name_end = line.index(" ")) # Artifactory bug causes blank lines in artifactor index files
  return unless (checksum_start = line.index(" ", name_end + 1) + 1)
  checksum_end = line.size - checksum_start

  line.freeze # allows slicing into the string to not allocate a copy of the line
  name = line[0, name_end]
  checksum = line[checksum_start, checksum_end]
  checksums[name.freeze] = checksum # freeze name since it is used as a hash key
end


  








  

    #versions  
  

  [ GitHub ]


  

  


# File 'lib/bundler/compact_index_client/parser.rb', line 20



def versions
  @versions_by_name ||= Hash.new {|hash, key| hash[key] = [] }
  @info_checksums = {}

  lines(@compact_index.versions).each do |line|
    name, versions_string, checksum = line.split(" ", 3)
    @info_checksums[name] = checksum || ""
    versions_string.split(",") do |version|
      delete = version.delete_prefix!("-")
      version = version.split("-", 2).unshift(name)
      if delete
        @versions_by_name[name].delete(version)
      else
        @versions_by_name[name] << version
      end
    end
  end

  @versions_by_name
end