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Fixed stringLayout (Causing issues when parsing CREATE on pumpfun) #4

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Merged
Tee-py merged 2 commits into from
Feb 22, 2025
Merged

Fixed stringLayout (Causing issues when parsing CREATE on pumpfun) #4

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6ce1cef
Update layout.ts
xTheAlex11 Feb 22, 2025
30a55e7
Update layout.ts
xTheAlex11 Feb 22, 2025
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16 changes: 11 additions & 5 deletions src/core/layout.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -34,14 +34,20 @@ export const uint128 = (property: string): Layout<bigint> => {
return uint128Layout;
};

export const stringLayout = (property: string, maxLength: number = 32): Layout<string> => {
const layout = blob(maxLength, property);
export const stringLayout = (property: string): Layout<string> => {
const layout = blob(4, property);
const stringLayout = layout as Layout<unknown> as Layout<string>;
const decode = layout.decode.bind(layout);

stringLayout.decode = (buffer: Buffer, offset: number) => {
const src = decode(buffer, offset);
return Buffer.from(src).toString('utf-8', 4).trim();
const length = buffer.readUInt32LE(offset);
return buffer.slice(offset + 4, offset + 4 + length).toString('utf-8');
};

stringLayout.getSpan = (buffer: Buffer, offset: number) => {
const length = buffer.readUInt32LE(offset);
return 4 + length;
};

return stringLayout;
};

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6 changes: 3 additions & 3 deletions src/parser/pumpfun/layout.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -3,9 +3,9 @@ import { CreateEvent, TradeEvent, CompleteEvent } from './types';
import { stringLayout, pubKey, uint64, boolean } from '../../core/layout';

export const CREATE_EVENT_LAYOUT = struct<CreateEvent>([
stringLayout('name', 20),
stringLayout('symbol', 9),
stringLayout('uri', 71),
stringLayout('name'),
stringLayout('symbol'),
stringLayout('uri'),
pubKey('mint'),
pubKey('bondingCurve'),
pubKey('user'),
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