Add object to kv string serializer

Author: StefanH-AT

packages/kv/src/main.ts

@@ -3,11 +3,13 @@ import { Token, TokenList, TokenType, Position, Literal, Range, Item, ParseError
 //import { formatAll, FormattingOptions } from "./formatter";
 import { isWhitespace, isQuoted, stripQuotes, isFloatValue, isIntegerValue, isScalarValue } from "./string-util";
 import { parseText, parseTokens } from "./parser";
+import { serialize } from "./serializer"
 
 export {
     tokenize,
     Token, TokenList, TokenType, Position, Literal as PositionedLiteral, Range, Item, ParseError, ParseErrorType, Document,
     //formatAll, FormattingOptions,
     isWhitespace, isQuoted, stripQuotes, isFloatValue, isIntegerValue, isScalarValue,
-    parseText, parseTokens
+    parseText, parseTokens,
+    serialize
 };

packages/kv/src/serializer.test.ts

@@ -0,0 +1,39 @@
+import {serialize} from "./serializer";
+
+test("Serialize Object simple", () => {
+    const obj = {
+        prop1: "string val",
+        prop2: 10,
+        boolProp: false,
+        boolProp2: true,
+        dateProp: new Date(2004, 10, 11, 8, 10, 0),
+    };
+
+    const kvStr = serialize(obj);
+    expect(kvStr).toBe(`"Object" {
+  "prop1" "string val"
+  "prop2" "10"
+  "boolProp" "false"
+  "boolProp2" "true"
+  "dateProp" "Thu Nov 11 2004 08:10:00 GMT+0100 (Central European Standard Time)"
+}`);
+});
+
+test("Serialize Object nested", () => {
+    const obj = {
+        prop1: "string val",
+        sub: {
+            more: 10,
+            stuff: "but nested"
+        }
+    };
+
+    const kvStr = serialize(obj);
+    expect(kvStr).toBe(`"Object" {
+  "prop1" "string val"
+  "sub" {
+    "more" "10"
+    "stuff" "but nested"
+  }
+}`);
+});

packages/kv/src/serializer.ts

@@ -0,0 +1,36 @@
+export function serialize(obj: Object, options?: { name?: string, indentSpaces?: number, indentTabs?: boolean }, nestedLevel: number = 0): string {
+    let indentObjStr: string = "";
+    let indentStrKv: string = "";
+    let indentChar = "";
+    if(options?.indentTabs) {
+        indentChar = "\t";
+    } else {
+        for (let i = 0; i < (options?.indentSpaces ?? 2); i++) {
+            indentChar += " ";
+        }
+    }
+    for (let i = 0; i < nestedLevel; i++) {
+        indentObjStr += indentChar;
+    }
+    indentStrKv = indentObjStr + indentChar;
+
+    const kvObjHead = `${indentObjStr}"${options?.name ?? "Object"}" {`;
+    const kvLines: string[] = [kvObjHead];
+    for (const [key, val] of Object.entries(obj)) {
+        const valIsObj = typeof val === "object";
+        const objHasCustomToString = typeof val.toString === "function" && val.toString !== Object.prototype.toString;
+        const doSerializeObj = valIsObj && !objHasCustomToString;
+
+        if(doSerializeObj) {
+            const serialized = serialize(val, { ...options, name: key }, nestedLevel + 1);
+            kvLines.push(serialized);
+        } else {
+            const kvString = `${indentStrKv}"${key}" "${String(val)}"`;
+            kvLines.push(kvString);
+        }
+    }
+    kvLines.push(`${indentObjStr}}`);
+
+    const fullStr = kvLines.join("\n");
+    return fullStr;
+}