mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
82 lines
2.1 KiB
Ruby
82 lines
2.1 KiB
Ruby
|
#--
|
||
|
|
# Copyright 2006 by Chad Fowler, Rich Kilmer, Jim Weirich and others.
|
||
|
|
# All rights reserved.
|
||
|
|
# See LICENSE.txt for permissions.
|
||
|
|
#++
|
||
|
|
|
||
|
|
require 'fileutils'
|
||
|
|
|
||
|
|
require 'rubygems/package'
|
||
|
|
|
||
|
|
module Gem
|
||
|
|
|
||
|
|
##
|
||
|
|
# The format class knows the guts of the RubyGem .gem file format
|
||
|
|
# and provides the capability to read gem files
|
||
|
|
#
|
||
|
|
class Format
|
||
|
|
attr_accessor :spec, :file_entries, :gem_path
|
||
|
|
extend Gem::UserInteraction
|
||
|
|
|
||
|
|
##
|
||
|
|
# Constructs an instance of a Format object, representing the gem's
|
||
|
|
# data structure.
|
||
|
|
#
|
||
|
|
# gem:: [String] The file name of the gem
|
||
|
|
#
|
||
|
|
def initialize(gem_path)
|
||
|
|
@gem_path = gem_path
|
||
|
|
end
|
||
|
|
|
||
|
|
##
|
||
|
|
# Reads the named gem file and returns a Format object, representing
|
||
|
|
# the data from the gem file
|
||
|
|
#
|
||
|
|
# file_path:: [String] Path to the gem file
|
||
|
|
#
|
||
|
|
def self.from_file_by_path(file_path, security_policy = nil)
|
||
|
|
format = nil
|
||
|
|
|
||
|
|
unless File.exist?(file_path)
|
||
|
|
raise Gem::Exception, "Cannot load gem at [#{file_path}] in #{Dir.pwd}"
|
||
|
|
end
|
||
|
|
|
||
|
|
# check for old version gem
|
||
|
|
if File.read(file_path, 20).include?("MD5SUM =")
|
||
|
|
#alert_warning "Gem #{file_path} is in old format."
|
||
|
|
require 'rubygems/old_format'
|
||
|
|
format = OldFormat.from_file_by_path(file_path)
|
||
|
|
else
|
||
|
|
begin
|
||
|
|
f = File.open(file_path, 'rb')
|
||
|
|
format = from_io(f, file_path, security_policy)
|
||
|
|
ensure
|
||
|
|
f.close unless f.closed?
|
||
|
|
end
|
||
|
|
end
|
||
|
|
|
||
|
|
return format
|
||
|
|
end
|
||
|
|
|
||
|
|
##
|
||
|
|
# Reads a gem from an io stream and returns a Format object, representing
|
||
|
|
# the data from the gem file
|
||
|
|
#
|
||
|
|
# io:: [IO] Stream from which to read the gem
|
||
|
|
#
|
||
|
|
def self.from_io(io, gem_path="(io)", security_policy = nil)
|
||
|
|
format = self.new(gem_path)
|
||
|
|
Package.open_from_io(io, 'r', security_policy) do |pkg|
|
||
|
|
format.spec = pkg.metadata
|
||
|
|
format.file_entries = []
|
||
|
|
pkg.each do |entry|
|
||
|
|
format.file_entries << [{"size" => entry.size, "mode" => entry.mode,
|
||
|
|
"path" => entry.full_name}, entry.read]
|
||
|
|
end
|
||
|
|
end
|
||
|
|
format
|
||
|
|
end
|
||
|
|
|
||
|
|
end
|
||
|
|
end
|