deflate stub

.github/workflows/test.yml

@@ -0,0 +1,21 @@
+name: test
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+
+    steps:
+    - uses: actions/checkout@v1
+
+    - name: apt
+      run: sudo apt-get install -y nodejs npm
+
+    - name: npm install
+      run: npm i
+
+    - name: npm test
+      run: npm test

package.json

@@ -4,8 +4,8 @@
   "description": "mapcleaner",
   "main": "index.js",
   "scripts": {
-    "jshint_backend": "cd src && jshint .",
+    "jshint_backend": "cd src && jshint . && cd ../test/ && jshint .",
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "mocha"
   },
   "repository": {
     "type": "git",
@@ -22,6 +22,7 @@
     "pq": "0.0.3"
   },
   "devDependencies": {
-    "jshint": "^2.11.1"
+    "jshint": "^2.11.1",
+    "mocha": "^8.0.1"
   }
 }

src/.jshintrc

@@ -4,7 +4,5 @@
   "esversion": 6,
   "node": true,
   "globals": {
-		"describe": true,
-		"it": true
   }
 }

src/mapblockparser.js

@@ -0,0 +1,55 @@
+const zlib = require("zlib");
+
+module.exports.parse = function(data){
+	const buffer = Buffer.from(data);
+
+	let offset = 0;
+
+	// version stuff
+	const version = buffer.readUInt8(offset);
+
+	if (version < 25 || version > 28) {
+		throw new Error("mapblock version not supported: " + version);
+	}
+
+	if (version >= 27) {
+		offset = 4;
+	} else {
+		//u16 lighting_complete not present
+		offset = 2;
+	}
+
+	// content
+
+	const content_width = buffer.readUInt8(offset);
+	const params_width = buffer.readUInt8(offset+1);
+
+	if (content_width != 2 || params_width != 2){
+		throw new Error("content/param width mismatch!")
+	}
+
+	//mapdata (blocks)
+
+	if (version >= 27) {
+		offset = 6;
+	} else {
+		offset = 4;
+	}
+
+	const metadata_buffer = buffer.subarray(offset);
+
+	const inflate = zlib.createInflate();
+	inflate.on("data", function(e){
+		console.log("event", e);
+		console.log(inflate.bytesWritten);
+	});
+	inflate.write(metadata_buffer);
+
+	console.log(inflate);
+
+	const metadata = zlib.inflateSync(metadata_buffer);
+
+	return {
+		version: version
+	};
+};

test/.jshintrc

@@ -0,0 +1,10 @@
+{
+  "undef": true,
+  "unused": true,
+  "esversion": 6,
+  "node": true,
+  "globals": {
+		"describe": true,
+		"it": true
+  }
+}

test/mapblockparser.js

@@ -0,0 +1,12 @@
+const assert = require('assert');
+const mapblockparser = require("../src/mapblockparser");
+const fs = require("fs");
+
+describe('mapblockparser', function() {
+  it('deserializes node names', function() {
+		const data = fs.readFileSync("./test/testdata/0.0.0");
+		const mapblock = mapblockparser.parse(data);
+
+		assert.equal(mapblock.version, 28);
+	});
+});