package com.intelligt.modbus.jlibmodbus.msg.response;
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import com.intelligt.modbus.jlibmodbus.exception.ModbusNumberException;
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import com.intelligt.modbus.jlibmodbus.msg.base.AbstractReadResponse;
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import com.intelligt.modbus.jlibmodbus.msg.base.ModbusFileRecord;
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import com.intelligt.modbus.jlibmodbus.net.stream.base.ModbusInputStream;
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import com.intelligt.modbus.jlibmodbus.net.stream.base.ModbusOutputStream;
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import com.intelligt.modbus.jlibmodbus.utils.DataUtils;
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import com.intelligt.modbus.jlibmodbus.utils.ModbusFunctionCode;
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import java.io.IOException;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.List;
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/*
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* Copyright (C) 2016 "Invertor" Factory", JSC
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* [http://www.sbp-invertor.ru]
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*
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* This file is part of JLibModbus.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Authors: Vladislav Y. Kochedykov, software engineer.
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* email: vladislav.kochedykov@gmail.com
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*/
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final public class ReadFileRecordResponse extends AbstractReadResponse {
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public static final int READ_RESP_SUB_REQ_LENGTH = 2;
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private List<ModbusFileRecord> records;
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public ReadFileRecordResponse() {
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super();
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this.records = new ArrayList<ModbusFileRecord>();
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}
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@Override
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protected void readData(ModbusInputStream fifo) throws IOException, ModbusNumberException {
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int response_byte_count = getByteCount();
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int read = 0;
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int i = 0;
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while (read < response_byte_count) {
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int record_byte_count = fifo.read() * 2;
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if (fifo.read() != ModbusFileRecord.REF_TYPE)
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throw new ModbusNumberException("Reference type mismatch.");
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read += READ_RESP_SUB_REQ_LENGTH;
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if (record_byte_count > response_byte_count - read) {
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record_byte_count = response_byte_count - read;
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}
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byte[] buffer = new byte[record_byte_count];
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if (fifo.read(buffer) != record_byte_count)
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throw new ModbusNumberException(record_byte_count + " bytes expected, but not received.");
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read += record_byte_count;
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ModbusFileRecord mfr = new ModbusFileRecord(0, i++, DataUtils.BeToIntArray(buffer));
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records.add(mfr);
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}
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setFileRecords(records.toArray(new ModbusFileRecord[records.size()]));
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}
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@Override
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protected void writeData(ModbusOutputStream fifo) throws IOException {
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for (ModbusFileRecord r : getFileRecords()) {
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fifo.write(r.getRecordLength());
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fifo.write(ModbusFileRecord.REF_TYPE);
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fifo.write(DataUtils.toByteArray(r.getRegisters()));
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}
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}
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@Override
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public int getFunction() {
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return ModbusFunctionCode.READ_FILE_RECORD.toInt();
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}
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public ModbusFileRecord[] getFileRecords() {
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return (ModbusFileRecord[]) records.toArray();
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}
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public void setFileRecords(ModbusFileRecord[] fileRecords) throws ModbusNumberException {
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records = Arrays.asList(fileRecords);
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int byteCount = 0;
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for (ModbusFileRecord r : getFileRecords()) {
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byteCount += 2 + r.getRecordLength() * 2;
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}
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setByteCount(byteCount);
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}
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}
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