From 31c94ffeb5f09d09ac2c86fc9e6614e38251a43d Mon Sep 17 00:00:00 2001 From: drbrain Date: Tue, 9 Jun 2009 21:38:59 +0000 Subject: Update to RubyGems 1.3.4 r2223 git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23659 b2dd03c8-39d4-4d8f-98ff-823fe69b080e --- lib/rubygems/old_format.rb | 236 +++++++++++++++++++++++---------------------- 1 file changed, 120 insertions(+), 116 deletions(-) (limited to 'lib/rubygems/old_format.rb') diff --git a/lib/rubygems/old_format.rb b/lib/rubygems/old_format.rb index 4b8db70bc6..43967db412 100644 --- a/lib/rubygems/old_format.rb +++ b/lib/rubygems/old_format.rb @@ -4,145 +4,149 @@ # See LICENSE.txt for permissions. #++ +require 'rubygems' require 'fileutils' require 'yaml' require 'zlib' -module Gem +## +# The format class knows the guts of the RubyGem .gem file format and provides +# the capability to read gem files + +class Gem::OldFormat + + attr_accessor :spec, :file_entries, :gem_path ## - # The format class knows the guts of the RubyGem .gem file format - # and provides the capability to read gem files + # Constructs an instance of a Format object, representing the gem's data + # structure. # - class OldFormat - attr_accessor :spec, :file_entries, :gem_path - - ## - # 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 + # gem:: [String] The file name of the gem - ## - # 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) - unless File.exist?(file_path) - raise Gem::Exception, "Cannot load gem file [#{file_path}]" - end - File.open(file_path, 'rb') do |file| - from_io(file, file_path) - end + 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) + unless File.exist?(file_path) + raise Gem::Exception, "Cannot load gem file [#{file_path}]" 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)") - format = self.new(gem_path) - skip_ruby(io) - format.spec = read_spec(io) - format.file_entries = [] - read_files_from_gem(io) do |entry, file_data| - format.file_entries << [entry, file_data] - end - format + File.open(file_path, 'rb') do |file| + from_io(file, file_path) end + end - private - ## - # Skips the Ruby self-install header. After calling this method, the - # IO index will be set after the Ruby code. - # - # file:: [IO] The IO to process (skip the Ruby code) - # - def self.skip_ruby(file) - end_seen = false - loop { - line = file.gets - if(line == nil || line.chomp == "__END__") then - end_seen = true - break - end - } - if(end_seen == false) then - raise Gem::Exception.new("Failed to find end of ruby script while reading gem") - 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)") + format = self.new(gem_path) + skip_ruby(io) + format.spec = read_spec(io) + format.file_entries = [] + read_files_from_gem(io) do |entry, file_data| + format.file_entries << [entry, file_data] end + format + end - ## - # Reads the specification YAML from the supplied IO and constructs - # a Gem::Specification from it. After calling this method, the - # IO index will be set after the specification header. - # - # file:: [IO] The IO to process - # - def self.read_spec(file) - yaml = '' - begin - read_until_dashes(file) do |line| - yaml << line - end - Specification.from_yaml(yaml) - rescue YAML::Error => e - raise Gem::Exception.new("Failed to parse gem specification out of gem file") - rescue ArgumentError => e - raise Gem::Exception.new("Failed to parse gem specification out of gem file") + private + + ## + # Skips the Ruby self-install header. After calling this method, the + # IO index will be set after the Ruby code. + # + # file:: [IO] The IO to process (skip the Ruby code) + + def self.skip_ruby(file) + end_seen = false + loop { + line = file.gets + if(line == nil || line.chomp == "__END__") then + end_seen = true + break end + } + + if end_seen == false then + raise Gem::Exception.new("Failed to find end of ruby script while reading gem") end + end - ## - # Reads lines from the supplied IO until a end-of-yaml (---) is - # reached - # - # file:: [IO] The IO to process - # block:: [String] The read line - # - def self.read_until_dashes(file) - while((line = file.gets) && line.chomp.strip != "---") do - yield line - end + ## + # Reads the specification YAML from the supplied IO and constructs + # a Gem::Specification from it. After calling this method, the + # IO index will be set after the specification header. + # + # file:: [IO] The IO to process + + def self.read_spec(file) + yaml = '' + + read_until_dashes file do |line| + yaml << line + end + + Gem::Specification.from_yaml yaml + rescue YAML::Error => e + raise Gem::Exception, "Failed to parse gem specification out of gem file" + rescue ArgumentError => e + raise Gem::Exception, "Failed to parse gem specification out of gem file" + end + + ## + # Reads lines from the supplied IO until a end-of-yaml (---) is + # reached + # + # file:: [IO] The IO to process + # block:: [String] The read line + + def self.read_until_dashes(file) + while((line = file.gets) && line.chomp.strip != "---") do + yield line end + end + ## + # Reads the embedded file data from a gem file, yielding an entry + # containing metadata about the file and the file contents themselves + # for each file that's archived in the gem. + # NOTE: Many of these methods should be extracted into some kind of + # Gem file read/writer + # + # gem_file:: [IO] The IO to process - ## - # Reads the embedded file data from a gem file, yielding an entry - # containing metadata about the file and the file contents themselves - # for each file that's archived in the gem. - # NOTE: Many of these methods should be extracted into some kind of - # Gem file read/writer - # - # gem_file:: [IO] The IO to process - # - def self.read_files_from_gem(gem_file) - errstr = "Error reading files from gem" - header_yaml = '' - begin + def self.read_files_from_gem(gem_file) + errstr = "Error reading files from gem" + header_yaml = '' + begin + self.read_until_dashes(gem_file) do |line| + header_yaml << line + end + header = YAML.load(header_yaml) + raise Gem::Exception, errstr unless header + + header.each do |entry| + file_data = '' self.read_until_dashes(gem_file) do |line| - header_yaml << line - end - header = YAML.load(header_yaml) - raise Gem::Exception.new(errstr) unless header - header.each do |entry| - file_data = '' - self.read_until_dashes(gem_file) do |line| - file_data << line - end - yield [entry, Zlib::Inflate.inflate(file_data.strip.unpack("m")[0])] + file_data << line end - rescue Exception,Zlib::DataError => e - raise Gem::Exception.new(errstr) + yield [entry, Zlib::Inflate.inflate(file_data.strip.unpack("m")[0])] end + rescue Zlib::DataError => e + raise Gem::Exception, errstr end end + end + -- cgit v1.2.3