94 lines
2.5 KiB
Ruby
94 lines
2.5 KiB
Ruby
# frozen_string_literal: true
|
|
|
|
require "zip"
|
|
|
|
module Compression
|
|
class Zip < Strategy
|
|
def extension
|
|
".zip"
|
|
end
|
|
|
|
def compress(path, target_name)
|
|
absolute_path = sanitize_path("#{path}/#{target_name}")
|
|
zip_filename = "#{absolute_path}.zip"
|
|
|
|
::Zip::File.open(zip_filename, ::Zip::File::CREATE) do |zipfile|
|
|
if File.directory?(absolute_path)
|
|
entries = Dir.entries(absolute_path) - %w[. ..]
|
|
write_entries(entries, absolute_path, "", zipfile)
|
|
else
|
|
put_into_archive(absolute_path, zipfile, target_name)
|
|
end
|
|
end
|
|
|
|
zip_filename
|
|
end
|
|
|
|
private
|
|
|
|
def extract_folder(entry, entry_path)
|
|
entry.extract(entry_path)
|
|
end
|
|
|
|
def get_compressed_file_stream(compressed_file_path)
|
|
zip_file = ::Zip::File.open(compressed_file_path)
|
|
yield(zip_file)
|
|
end
|
|
|
|
def build_entry_path(dest_path, entry, _)
|
|
File.join(dest_path, entry.name)
|
|
end
|
|
|
|
def decompression_results_path(dest_path, _)
|
|
dest_path
|
|
end
|
|
|
|
def extract_file(entry, entry_path, available_size)
|
|
remaining_size = available_size
|
|
|
|
if ::File.exist?(entry_path)
|
|
raise ::Zip::DestinationFileExistsError, "Destination '#{entry_path}' already exists"
|
|
end
|
|
|
|
::File.open(entry_path, "wb") do |os|
|
|
entry.get_input_stream do |is|
|
|
entry.set_extra_attributes_on_path(entry_path)
|
|
|
|
buf = "".dup
|
|
while (buf = is.sysread(chunk_size, buf))
|
|
remaining_size -= chunk_size
|
|
raise ExtractFailed if remaining_size.negative?
|
|
os << buf
|
|
end
|
|
end
|
|
end
|
|
|
|
remaining_size
|
|
end
|
|
|
|
# A helper method to make the recursion work.
|
|
def write_entries(entries, base_path, path, zipfile)
|
|
entries.each do |e|
|
|
zipfile_path = path == "" ? e : File.join(path, e)
|
|
disk_file_path = File.join(base_path, zipfile_path)
|
|
|
|
if File.directory? disk_file_path
|
|
recursively_deflate_directory(disk_file_path, zipfile, base_path, zipfile_path)
|
|
else
|
|
put_into_archive(disk_file_path, zipfile, zipfile_path)
|
|
end
|
|
end
|
|
end
|
|
|
|
def recursively_deflate_directory(disk_file_path, zipfile, base_path, zipfile_path)
|
|
zipfile.mkdir zipfile_path
|
|
subdir = Dir.entries(disk_file_path) - %w[. ..]
|
|
write_entries subdir, base_path, zipfile_path, zipfile
|
|
end
|
|
|
|
def put_into_archive(disk_file_path, zipfile, zipfile_path)
|
|
zipfile.add(zipfile_path, disk_file_path)
|
|
end
|
|
end
|
|
end
|