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#!/usr/bin/env ruby
# frozen_string_literal: true
require "nokogiri"
require "fileutils"
require "yaml"
require "date"
require "zip"
module EpubPacker # :nodoc:
extend self
def pack(output_dir, epub_file_name)
@output_dir = output_dir
FileUtils.rm_f(epub_file_name)
Zip::OutputStream.open(epub_file_name) {
|epub|
create_epub(epub, epub_file_name)
}
entries = Dir.entries(output_dir) - %w[. ..]
entries.reject! { |item| File.extname(item) == ".epub" }
Zip::File.open(epub_file_name, create: true) do |epub|
write_entries(entries, "", epub)
end
end
def create_epub(epub, epub_file_name)
epub.put_next_entry("mimetype", nil, nil, Zip::Entry::STORED, Zlib::NO_COMPRESSION)
epub.write "application/epub+zip"
end
def write_entries(entries, path, zipfile)
entries.each do |e|
zipfile_path = path == "" ? e : File.join(path, e)
disk_file_path = File.join(@output_dir, zipfile_path)
if File.directory? disk_file_path
recursively_deflate_directory(disk_file_path, zipfile, zipfile_path)
else
put_into_archive(disk_file_path, zipfile, zipfile_path)
end
end
end
def recursively_deflate_directory(disk_file_path, zipfile, zipfile_path)
zipfile.mkdir zipfile_path
subdir = Dir.entries(disk_file_path) - %w[. ..]
write_entries subdir, zipfile_path, zipfile
end
def put_into_archive(disk_file_path, zipfile, zipfile_path)
zipfile.add(zipfile_path, disk_file_path)
end
end
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