JezK

Edit File: uri_tar.rb

require 'sprockets/path_utils'

module Sprockets
 # Internal: used to "expand" and "compress" values for storage
  class URITar
    attr_reader :scheme, :root, :path

# Internal: Initialize object for compression or expansion
    #
    # uri - A String containing URI that may or may not contain the scheme
    # env - The current "environment" that assets are being loaded into.
    def initialize(uri, env)
      @root = env.root
      @env  = env
      uri   = uri.to_s
      if uri.include?("://".freeze)
        @scheme, _, @path = uri.partition("://".freeze)
        @scheme << "://".freeze
      else
        @scheme = "".freeze
        @path   = uri
      end
    end

# Internal: Converts full uri to a "compressed" uri
    #
    # If a uri is inside of an environment's root it will
    # be shortened to be a relative path.
    #
    # If a uri is outside of the environment's root the original
    # uri will be returned.
    #
    # Returns String
    def compress
      scheme + compressed_path
    end

# Internal: Tells us if we are using an absolute path
    #
    # Nix* systems start with a `/` like /Users/schneems.
    # Windows systems start with a drive letter than colon and slash
    # like C:/Schneems.
    def absolute_path?
      PathUtils.absolute_path?(path)
    end

# Internal: Convert a "compressed" uri to an absolute path
    #
    # If a uri is inside of the environment's root it will not
    # start with a slash for example:
    #
    #   file://this/is/a/relative/path
    #
    # If a uri is outside the root, it will start with a slash:
    #
    #   file:///This/is/an/absolute/path
    #
    # Returns String
    def expand
      if absolute_path?
        # Stored path was absolute, don't add root
        scheme + path
      else
        if scheme.empty?
          File.join(root, path)
        else
          # We always want to return an absolute uri,
          # make sure the path starts with a slash.
          scheme + File.join("/".freeze, root, path)
        end
      end
    end

# Internal: Returns "compressed" path
    #
    # If the input uri is relative to the environment root
    # it will return a path relative to the environment root.
    # Otherwise an absolute path will be returned.
    #
    # Only path information is returned, and not scheme.
    #
    # Returns String
    def compressed_path
      # windows
      if !@root.start_with?("/".freeze) && path.start_with?("/".freeze)
        consistent_root = "/".freeze + @root
      else
        consistent_root = @root
      end

if compressed_path = PathUtils.split_subpath(consistent_root, path)
        compressed_path
      else
        path
      end
    end
  end
end

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