fix: types

packages/scripts/src/core/blitz/readBase64DVPL.ts

@@ -0,0 +1,6 @@
+import { readDVPLFile } from './readDVPLFile';
+
+export async function readBase64DVPL(file: string) {
+  const buffer = await readDVPLFile(file);
+  return buffer.toString('base64');
+}

packages/scripts/src/core/blitz/readDVPL.ts

@@ -0,0 +1,60 @@
+import { crc32 } from 'crc';
+import { decompressBlock } from 'lz4js';
+
+/**
+ * Thanks Maddoxkkm! Modified heavily to be modern.
+ * https://github.com/Maddoxkkm/dvpl_converter/
+ */
+export function readDVPL(buffer: Buffer) {
+  const footerBuffer = buffer.subarray(buffer.length - 20, buffer.length);
+
+  if (
+    footerBuffer.toString('utf8', 16, 20) !== 'DVPL' ||
+    footerBuffer.length !== 20
+  ) {
+    throw new SyntaxError('Invalid DVPL footer');
+  }
+
+  const footerData = {
+    oSize: footerBuffer.readUInt32LE(0),
+    cSize: footerBuffer.readUInt32LE(4),
+    crc32: footerBuffer.readUInt32LE(8),
+    type: footerBuffer.readUInt32LE(12),
+  };
+  const targetBlock = buffer.subarray(0, buffer.length - 20);
+
+  if (targetBlock.length !== footerData.cSize) {
+    throw new RangeError('DVPL size mismatch');
+  }
+  if (crc32(targetBlock) !== footerData.crc32) {
+    throw new TypeError('DVPL CRC32 mismatch');
+  }
+
+  if (footerData.type === 0) {
+    if (!(footerData.oSize === footerData.cSize && footerData.type === 0)) {
+      throw new RangeError('DVPL type and size mismatch');
+    }
+
+    return targetBlock;
+  } else if (footerData.type === 1 || footerData.type === 2) {
+    const source = new Uint8Array(targetBlock);
+    const destination = new Uint8Array(footerData.oSize);
+    const decompressedSize = decompressBlock(
+      source,
+      destination,
+      0,
+      source.length,
+      0,
+    );
+
+    if (decompressedSize !== footerData.oSize) {
+      throw new RangeError(
+        `Decompressed DVPL size mismatch (${decompressedSize} vs ${footerData.oSize})`,
+      );
+    }
+
+    return Buffer.from(destination);
+  } else {
+    throw new SyntaxError('Unknown DVPL format');
+  }
+}

packages/scripts/src/core/blitz/readDVPLFile.ts

@@ -0,0 +1,6 @@
+import { readFile } from 'fs/promises';
+import { readDVPL } from './readDVPL';
+
+export async function readDVPLFile(file: string) {
+  return readDVPL(await readFile(file));
+}

packages/scripts/src/core/blitz/readStringDVPL.ts

@@ -0,0 +1,6 @@
+import { readDVPLFile } from './readDVPLFile';
+
+export async function readStringDVPL(file: string) {
+  const buffer = await readDVPLFile(file);
+  return buffer.toString();
+}

packages/scripts/src/core/blitz/readXMLDVPL.ts

@@ -0,0 +1,9 @@
+import { XMLParser } from 'fast-xml-parser';
+import { readStringDVPL } from './readStringDVPL';
+
+export async function readXMLDVPL<Type>(file: string) {
+  const parser = new XMLParser();
+  const xml = await readStringDVPL(file);
+
+  return parser.parse(xml) as Type;
+}

packages/scripts/src/core/blitz/readYAML.ts

@@ -0,0 +1,7 @@
+import { readFile } from 'fs/promises';
+import { parse } from 'yaml';
+
+export async function readYAML<Type>(file: string) {
+  const yaml = (await readFile(file)).toString();
+  return parse(yaml) as Type;
+}

packages/scripts/src/core/blitz/readYAMLDVPL.ts

@@ -0,0 +1,8 @@
+import { parse } from 'yaml';
+import { readStringDVPL } from './readStringDVPL';
+
+export async function readYAMLDVPL<Type>(file: string) {
+  const yaml = await readStringDVPL(file);
+
+  return parse(yaml) as Type;
+}