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mc-anvil

v2.0.15

Published

A Typescript library for reading Minecraft Anvil format files and Minecraft NBT format files in the browser.

Downloads

113

Readme

mc-anvil

A Typescript library for reading Minecraft Anvil format files and Minecraft NBT format files in the browser.

Installation

For npm use: npm install mc-anvil --save

For yarn use: yarn add mc-anvil

Usage

Importing

import { NBTParser, AnvilParser } from "mc-anvil";

Reading NBT data

The following example reads the root tag from an NBT file uploaded into the browser:

const reader = new FileReader();
reader.onload = e => {
    const parser = new NBTParser(e);
    const tag = parser.getTag(); // receives contents of the root tag
};
reader.readAsArrayBuffer(file); // file is a File object or Blob containing NBT data

Reading Anvil data

The following example extracts a chunk from an Anvil file uploaded into the browser:

const reader = new FileReader();
reader.onload = e => {
    const parser = new AnvilParser(e);
    const chunks = parser.getLocationEntries();
    const firstNonEmptyChunk = chunks.filter(x => x.offset > 0)[0].offset;
    const data = parser.getChunkData(firstNonEmptyChunk); // receives NBT data of the first chunk
    const nbtParser = new NBTParser(data);
    const tag = nbtParser.getTag(); // receives contents of the chunk's root NBT tag
};
reader.readAsArrayBuffer(file); // file is a File object or Blob containing Anvil data

For contributers

Building

  • Run yarn install to install dependencies.
  • Run yarn build to build.

Testing

You must have Node.js and docker-compose installed.

  • scripts/test.sh to run automated tests.
  • scripts/run-dependencies.sh to stand up a web server to host static sample NBT and Anvil files. scripts/test.sh runs this for you.
  • scripts/stop-dependencies.sh to stop bring down the server.