class Bundler::CompactIndexClient::Parser - bundler: Ruby Standard Library Documentation

# class Bundler::CompactIndexClient::Parser

### Public Class Methods

new(compact_index) click to toggle source

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

    returning the file contents as a string

    # File 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

### Public Instance Methods

available?() click to toggle source

    # File bundler/compact_index_client/parser.rb, line 46
    def available?
      return @available unless @available.nil?
      @available = !info_checksums.empty?
    end

info(name) click to toggle source

    # File 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

names() click to toggle source

    # File bundler/compact_index_client/parser.rb, line 16
    def names
      lines(@compact_index.names)
    end

versions() click to toggle source

    # File 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

### Private Instance Methods

gem_parser() click to toggle source

    # File bundler/compact_index_client/parser.rb, line 66
    def gem_parser
      @gem_parser ||= GemParser.new
    end

info_checksums() click to toggle source

    # File 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) click to toggle source

    # File 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

parse_version_checksum(line, checksums) click to toggle source

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.

    # File 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