HandyCache форум

--[[ <HCExtension>
@name		Save 206 Partial (Resumable)
@author		bdstd
@rule		^.*/mobileoc\.music\.tc\.qq\.com/(\w+\.\w+)\?.*
@event		Timer1m/temp_cleaner
@event		AnswerHeaderReceived/answer
</HCExtension> ]]
function temp_cleaner()
	hc.delete_file(hc.cache_path..'206_Partial_Temp')
end
function answer()
	if hc.action=='dont_update' or hc.action=='dont_update-' then return end
	if hc.method~='GET' then return end
	if not re.find(hc.answer_header, [[^HTTP/[\d\.]+\s206]]) then return end
	if re.find(hc.request_header, [[^.*Range:\sbytes=(\d+)\-.*]]) then
		request_byte = tonumber(re.substr(1))
		fname = hc.get_cache_file_name(hc.url)
		hc.action = 'dont_save'
		hc.call_me_for('BeforeAnswerHeaderSend', 'partial_processing')
	end
end
function partial_processing()
	if re.find(hc.answer_header, [[^ETag:\s([^\r\n]+)\r\n]]) then
		local val = hc.crc32(re.substr(1))
		fname_temp = hc.cache_path..'206_Partial_Temp\\'..hc.crc32(fname)..val
	elseif re.find(hc.answer_header, [[^Last\-Modified:\s([^\r\n]+)\r\n]]) then
		local val = hc.crc32(re.substr(1))
		fname_temp = hc.cache_path..'206_Partial_Temp\\'..hc.crc32(fname)..val
	else
		return
	end
	hc.prepare_path(fname)
	hc.prepare_path(fname_temp)
	if request_byte==0 then
		hc.monitor_string = 'Save-206'
		mark = io.open(fname_temp..'.buf', 'w')
		write_data = io.open(fname_temp, 'w+b')
		hc.call_me_for('BeforeAnswerBodySend', 'write_byte')
	else
		while hc.get_cache_file_size(fname_temp..'.buf')~=-1 do
			hc.sleep(1000)
			os.remove(fname_temp..'.buf')
			if hc.client_connected==false then return end
		end
		if request_byte==hc.get_cache_file_size(fname_temp) then
			hc.monitor_string = 'Save-206(Resuming)'
			mark = io.open(fname_temp..'.buf', 'w')
			write_data = io.open(fname_temp, 'a+b')
			hc.call_me_for('BeforeAnswerBodySend', 'write_byte')
		end
	end
end
function write_byte()
	if hc.last_part==true then
		write_data:write(hc.answer_body)
		write_data:close()
		mark:close()
		os.remove(fname_temp..'.buf')
		if re.find(hc.answer_header, [[^Content\-Range:\sbytes\s\d+\-(\d+)/(\d+)\r\n]]) then
			if hc.get_cache_file_size(fname_temp)==tonumber(re.substr(2)) then
				if os.rename(fname_temp, fname)==true then
					hc.monitor_string = 'Completed'
				end
			end
		end
	else
		write_data:write(hc.answer_body)
	end
end