__hex_decode.lua

return {
	m = 'iec60870',
	name = 'IEC60870',
	desc = 'IEC101/104 Protocol Library',
	settings = {
		{ name = 'FRAME_NO_ADDR', desc = 'Frame has no address field', dt = 'boolean', default = false },
		{ name = 'FRAME_ADDR_SIZE', desc = 'Frame address size(链路地址长度)', dt = 'number', default = 2 },
		{ name = 'FT12_FIXED_LEN', desc = 'FIXED Frame FT1.2 ASDU length', dt = 'number', default = 0 },
		{ name = 'ADDR_SIZE', desc = 'ASDU Command address size (ASDU公共地址长度)', dt = 'number', default = 2 },
		{ name = 'COT_SIZE', desc = 'ASDU cause of transfer field size (COT传输原因长度)', dt = 'number', default = 1 },
		{ name = 'OBJ_ADDR_SIZE', desc = 'ASDU ojbect address size (信息体地址长度)', dt = 'number', default = 2 },
	},
	decode = function(text, conf)
		local basexx = require 'basexx'
		local ft12 = require 'iec60870.frame.ft12'
		local c = require 'iec60870.conf'
		local helper = require 'iec60870.common.helper'
		local cjson = require 'cjson.safe'

		for k, v in pairs(c) do
			if conf[k] ~= nil then c[k] = conf[k] end
		end
		print('CONF:', cjson.encode(c))

		local str = string.gsub(text, ' ', '')
		print('SRC:', str)
		print('SRC len:', string.len(str))
		local raw = basexx.from_hex(str)
		local frame = ft12:new()
		local r, next_index, err = frame:valid_hex(raw, 1)
		if not r then
			print(next_index, err)
			return next_index, err
		end
		frame:from_hex(raw, 1)
		return frame
	end
}