Add bin and edit workflow

bin/gems/bundler-2.5.9/lib/bundler/compact_index_client/cache.rb

@@ -0,0 +1,121 @@
+# frozen_string_literal: true
+
+require_relative "gem_parser"
+
+module Bundler
+  class CompactIndexClient
+    class Cache
+      attr_reader :directory
+
+      def initialize(directory)
+        @directory = Pathname.new(directory).expand_path
+        info_roots.each {|dir| mkdir(dir) }
+        mkdir(info_etag_root)
+      end
+
+      def names
+        lines(names_path)
+      end
+
+      def names_path
+        directory.join("names")
+      end
+
+      def names_etag_path
+        directory.join("names.etag")
+      end
+
+      def versions
+        versions_by_name = Hash.new {|hash, key| hash[key] = [] }
+        info_checksums_by_name = {}
+
+        lines(versions_path).each do |line|
+          name, versions_string, info_checksum = line.split(" ", 3)
+          info_checksums_by_name[name] = info_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, info_checksums_by_name]
+      end
+
+      def versions_path
+        directory.join("versions")
+      end
+
+      def versions_etag_path
+        directory.join("versions.etag")
+      end
+
+      def checksums
+        checksums = {}
+
+        lines(versions_path).each do |line|
+          name, _, checksum = line.split(" ", 3)
+          checksums[name] = checksum
+        end
+
+        checksums
+      end
+
+      def dependencies(name)
+        lines(info_path(name)).map do |line|
+          parse_gem(line)
+        end
+      end
+
+      def info_path(name)
+        name = name.to_s
+        if /[^a-z0-9_-]/.match?(name)
+          name += "-#{SharedHelpers.digest(:MD5).hexdigest(name).downcase}"
+          info_roots.last.join(name)
+        else
+          info_roots.first.join(name)
+        end
+      end
+
+      def info_etag_path(name)
+        name = name.to_s
+        info_etag_root.join("#{name}-#{SharedHelpers.digest(:MD5).hexdigest(name).downcase}")
+      end
+
+      private
+
+      def mkdir(dir)
+        SharedHelpers.filesystem_access(dir) do
+          FileUtils.mkdir_p(dir)
+        end
+      end
+
+      def lines(path)
+        return [] unless path.file?
+        lines = SharedHelpers.filesystem_access(path, :read, &:read).split("\n")
+        header = lines.index("---")
+        header ? lines[header + 1..-1] : lines
+      end
+
+      def parse_gem(line)
+        @dependency_parser ||= GemParser.new
+        @dependency_parser.parse(line)
+      end
+
+      def info_roots
+        [
+          directory.join("info"),
+          directory.join("info-special-characters"),
+        ]
+      end
+
+      def info_etag_root
+        directory.join("info-etags")
+      end
+    end
+  end
+end