diff options
author | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:02:05 +0000 |
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committer | yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e> | 2008-08-25 15:02:05 +0000 |
commit | 0dc342de848a642ecce8db697b8fecd83a63e117 (patch) | |
tree | 2b7ed4724aff1f86073e4740134bda9c4aac1a39 /trunk/lib/rubygems/format.rb | |
parent | ef70cf7138ab8034b5b806f466e4b484b24f0f88 (diff) |
added tag v1_9_0_4
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'trunk/lib/rubygems/format.rb')
-rw-r--r-- | trunk/lib/rubygems/format.rb | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/trunk/lib/rubygems/format.rb b/trunk/lib/rubygems/format.rb new file mode 100644 index 0000000000..7dc127d5f4 --- /dev/null +++ b/trunk/lib/rubygems/format.rb @@ -0,0 +1,87 @@ +#-- +# 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 =") + require 'rubygems/old_format' + + format = OldFormat.from_file_by_path(file_path) + else + open file_path, Gem.binary_mode do |io| + format = from_io io, file_path, security_policy + 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 = new gem_path + + Package.open io, 'r', security_policy do |pkg| + format.spec = pkg.metadata + format.file_entries = [] + + pkg.each do |entry| + size = entry.header.size + mode = entry.header.mode + + format.file_entries << [{ + "size" => size, "mode" => mode, "path" => entry.full_name, + }, + entry.read + ] + end + end + + format + end + + end +end |