北斗短报文通信服务平台

app/middleware/shunt/selectXFType.js

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+// 解析服务信息类型
+module.exports = (middleware, item, baseObj, arr) => {
+    const utils = middleware.utils;
+    const parseDataPackage = middleware.parseDataPackage;
+    let dataCtx = baseObj.dataContent, objName, labelString, dataArr, itemLength, itemType;
+    if (item == 'now') {
+        objName = 'nowData';
+        labelString = '当前';
+        itemLength = baseObj.dataLength.data;
+        dataArr = utils.getArr(arr, 15, 15 + itemLength - 1);
+        itemType = baseObj.dataItem.data;
+    } else if (item == 'resend') {
+        objName = 'resendData';
+        labelString = '重发';
+        itemLength = baseObj.resendLength.data;
+        dataArr = utils.getArr(arr, 15 + baseObj.dataLength.data, 15 + baseObj.dataLength.data + itemLength - 1);
+        itemType = baseObj.resendItem.data;
+    }
+    dataCtx[objName] = {
+        label: labelString + "数据段",
+        timeObj: {
+            year: { label: "年", data: parseInt(dataArr[0] + dataArr[1], 16) },
+            month: { label: "月", data: parseInt(dataArr[2], 16) },
+            day: { label: "日", data: parseInt(dataArr[3], 16) },
+        }
+    }
+    dataArr = utils.getArr(dataArr, 4, itemLength - 1);
+    for (let i = 0; i < itemType; i++) {
+        let contentObj = "contentObj" + (i + 1);
+        dataCtx[objName][contentObj] = {
+            label: labelString + "数据内容" + (i + 1),
+            typeNumber: { label: "信息类型编号", data: parseInt(dataArr[0] + dataArr[1], 16) },
+            contentLength: { label: "信息内容长度", data: parseInt(dataArr[2] + dataArr[3], 16) },
+        }
+        if (dataCtx[objName][contentObj].contentLength.data !== 0) {
+            dataArr = utils.getArr(dataArr, 4, itemLength - 5);
+            switch (dataCtx[objName][contentObj].typeNumber.data) {
+                case 4: parseDataPackage.parseXFType004(middleware, dataArr, dataCtx[objName][contentObj]);
+                    break;
+                case 5: parseDataPackage.parseXFType005(middleware, dataArr, dataCtx[objName][contentObj]);
+                    break;
+                case 99: parseDataPackage.parseXFType099(dataArr, dataCtx[objName][contentObj]);
+                    break;
+                default:
+                    break;
+            }
+        }
+        dataArr = utils.getArr(dataArr, dataCtx[objName][contentObj].contentLength.data, itemLength - 1);
+    }
+};

app/middleware/shunt/socketEmitter.js

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+// socket事件监听器
+const EventEmitter = require('events');
+
+const socketEmitter = new EventEmitter();
+
+module.exports = () => {
+    return socketEmitter;
+};

app/middleware/shunt/socketResult.js

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+// 对数据包解析结果做类型判断，并根据不同类型返回不同结果
+module.exports = (data) => {
+    for (let item in data) {
+        if (data[item].typeNumber) {
+            if (data[item].typeNumber.data == 4) {
+                return { type: 4, data: data[item] };
+            } else if (data[item].typeNumber.data == 5) {
+                return { type: 5, data: data[item] };
+            } else if (data[item].typeNumber.data == 99) {
+                return { type: 99, data: data[item].authStatus };
+            }
+        }
+    }
+};