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require "active_file/site"
require "fileutils"
require "pathname"
class ActiveFile::Sites::DiskSite < ActiveFile::Site
attr_reader :root
def initialize(root)
@root = root
end
def upload(key, data)
File.open(make_path_for(key), "wb") do |file|
while chunk = data.read(65536)
file.write(chunk)
end
end
end
def download(key)
if block_given?
open(path_for(key)) do |file|
while data = file.read(65536)
yield data
end
end
else
open(path_for(key), &:read)
end
end
def delete(key)
File.delete(path_for(key))
end
def size(key)
File.size(path_for(key))
end
def checksum(key)
Digest::MD5.file(path_for(key)).hexdigest
end
private
def path_for(key)
File.join(root, folder_for(key), key)
end
def folder_for(key)
[key[0..1], key[2..3]].join("/")
end
def make_path_for(key)
path_for(key).tap { |path| FileUtils.mkdir_p File.dirname(path) }
end
end
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