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require 'pathname'
require 'puppet_forge/error'
require 'puppet_forge/tar'
module PuppetForge
class Unpacker
# Unpack a tar file into a specified directory
#
# @param filename [String] the file to unpack
# @param target [String] the target directory to unpack into
# @return [Hash{:symbol => Array<String>}] a hash with file-category keys pointing to lists of filenames.
# The categories are :valid, :invalid and :symlink
def self.unpack(filename, target, tmpdir)
inst = self.new(filename, target, tmpdir)
file_lists = inst.unpack
inst.move_into(Pathname.new(target))
file_lists
end
# Set the owner/group of the target directory to those of the source
# Note: don't call this function on Microsoft Windows
#
# @param source [Pathname] source of the permissions
# @param target [Pathname] target of the permissions change
def self.harmonize_ownership(source, target)
FileUtils.chown_R(source.stat.uid, source.stat.gid, target)
end
# @param filename [String] the file to unpack
# @param target [String] the target directory to unpack into
def initialize(filename, target, tmpdir)
@filename = filename
@target = target
@tmpdir = tmpdir
end
# @api private
def unpack
begin
PuppetForge::Tar.instance.unpack(@filename, @tmpdir)
rescue PuppetForge::ExecutionFailure => e
raise RuntimeError, "Could not extract contents of module archive: #{e.message}"
end
end
# @api private
def move_into(dir)
dir.rmtree if dir.exist?
FileUtils.mv(root_dir, dir)
ensure
FileUtils.rmtree(@tmpdir)
end
# @api private
def root_dir
return @root_dir if @root_dir
# Grab the first directory containing a metadata.json file
metadata_file = Dir["#{@tmpdir}/**/metadata.json"].sort_by(&:length)[0]
if metadata_file
@root_dir = Pathname.new(metadata_file).dirname
else
raise "No valid metadata.json found!"
end
end
end
end
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