Sha256: f4c9e7b6eee5cda4d8ee91c7afae88109eb9584675801b8757f6913f2de767f6
Contents?: true
Size: 1.73 KB
Versions: 6
Compression:
Stored size: 1.73 KB
Contents
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)
unless File.exist?(file_path)
raise Gem::Exception, "Cannot load gem at [#{file_path}]"
end
require 'fileutils'
# 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'
return OldFormat.from_file_by_path(file_path)
else
f = File.open(file_path, 'rb')
return from_io(f, file_path)
end
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)
Package.open_from_io(io) 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
Version data entries
6 entries across 6 versions & 1 rubygems