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Versions: 30
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Contents
require "digest/md5"
require "fileutils"
require "ruco/core_ext/file"
module Ruco
class FileStore
def initialize(folder, options={})
@folder = File.expand_path(folder)
@options = options
end
def set(key, value)
FileUtils.mkdir_p @folder unless File.exist? @folder
File.write(file(key), serialize(value))
cleanup if @options[:keep]
end
def get(key)
file = file(key)
deserialize File.binary_read(file) if File.exist?(file)
end
def cache(key, &block)
value = get(key)
if value.nil?
value = yield
set(key, value)
end
value
end
def delete(key)
FileUtils.rm(file(key))
rescue Errno::ENOENT
end
def clear
FileUtils.rm_rf(@folder)
end
def file(key)
"#{@folder}/#{Digest::MD5.hexdigest(key)}.yml"
end
private
def entries
(Dir.entries(@folder) - ['.','..']).
map{|entry| File.join(@folder, entry) }.
sort_by{|file| File.mtime(file) }
end
def cleanup
delete = entries[0...-@options[:keep]] || []
delete.each{|f| File.delete(f) }
end
def serialize(value)
@options[:string] ? value : Marshal.dump(value)
end
def deserialize(value)
@options[:string] ? value : Marshal.load(value)
end
end
end
Version data entries
30 entries across 30 versions & 1 rubygems