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extend error catching

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This commit is contained in:
BuckarooBanzay 2020-10-16 11:19:17 +02:00
parent 6adf4adb8a
commit fc57ef2cfb
1 changed files with 41 additions and 36 deletions
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77
src/mapblockparser.js
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@ -47,50 +47,55 @@ module.exports.parse = data => new Promise(function(resolve, reject) {
inflate = zlib.createInflate();
inflate.on("data", function(/*metadata*/){
offset += inflate.bytesWritten;
try {
offset += inflate.bytesWritten;
//static objects version
const static_objects_version = buffer.readUInt8(offset);
offset++;
//static objects version
const static_objects_version = buffer.readUInt8(offset);
offset++;
const static_objects_count = buffer.readUInt16BE(offset);
offset += 2;
for (let i=0; i < static_objects_count; i++) {
offset += 13;
const dataSize = buffer.readUInt16BE(offset);
offset += dataSize + 2;
}
//timestamp
offset += 4;
//mapping version
offset++;
const numMappings = buffer.readUInt16BE(offset);
const node_id_mapping = {};
offset += 2;
for (let i=0; i < numMappings; i++) {
const nodeId = buffer.readUInt16BE(offset);
const static_objects_count = buffer.readUInt16BE(offset);
offset += 2;
const nameLen = buffer.readUInt16BE(offset);
for (let i=0; i < static_objects_count; i++) {
offset += 13;
const dataSize = buffer.readUInt16BE(offset);
offset += dataSize + 2;
}
//timestamp
offset += 4;
//mapping version
offset++;
const numMappings = buffer.readUInt16BE(offset);
const node_id_mapping = {};
offset += 2;
for (let i=0; i < numMappings; i++) {
const nodeId = buffer.readUInt16BE(offset);
offset += 2;
const blockName = buffer.subarray(offset, offset+nameLen).toString();
offset += nameLen;
const nameLen = buffer.readUInt16BE(offset);
offset += 2;
node_id_mapping[blockName] = nodeId;
const blockName = buffer.subarray(offset, offset+nameLen).toString();
offset += nameLen;
node_id_mapping[blockName] = nodeId;
}
resolve({
version: version,
static_objects_count: static_objects_count,
static_objects_version: static_objects_version,
node_id_mapping: node_id_mapping
});
} catch (e) {
console.error("possible mapblock corruption detected!", e);
reject(e);
}
resolve({
version: version,
static_objects_count: static_objects_count,
static_objects_version: static_objects_version,
node_id_mapping: node_id_mapping
});
});
inflate.write(metadata_buffer);