FM / parser

/var/www/greso.tech/server/nsm/node_modules/pdf-lib/src/core/parser/

/var/www/greso.tech/server/nsm/node_modules/pdf-lib/src/core/parser

Name	Size	Mode	Actions
BaseParser.ts	3462	0644	edit dl rm
ByteStream.ts	1749	0644	edit dl rm
PDFObjectParser.ts	8768	0644	edit dl rm
PDFObjectStreamParser.ts	2408	0644	edit dl rm
PDFParser.ts	11466	0644	edit dl rm
PDFXRefStreamParser.ts	3987	0644	edit dl rm

Edit: /var/www/greso.tech/server/nsm/node_modules/pdf-lib/src/core/parser/ByteStream.ts (1749B)

import { NextByteAssertionError } from 'src/core/errors';
import PDFRawStream from 'src/core/objects/PDFRawStream';
import { decodePDFRawStream } from 'src/core/streams/decode';
import CharCodes from 'src/core/syntax/CharCodes';

// TODO: See how line/col tracking affects performance
class ByteStream {
  static of = (bytes: Uint8Array) => new ByteStream(bytes);

static fromPDFRawStream = (rawStream: PDFRawStream) =>
    ByteStream.of(decodePDFRawStream(rawStream).decode());

private readonly bytes: Uint8Array;
  private readonly length: number;

private idx = 0;
  private line = 0;
  private column = 0;

constructor(bytes: Uint8Array) {
    this.bytes = bytes;
    this.length = this.bytes.length;
  }

moveTo(offset: number): void {
    this.idx = offset;
  }

next(): number {
    const byte = this.bytes[this.idx++];
    if (byte === CharCodes.Newline) {
      this.line += 1;
      this.column = 0;
    } else {
      this.column += 1;
    }
    return byte;
  }

assertNext(expected: number): number {
    if (this.peek() !== expected) {
      throw new NextByteAssertionError(this.position(), expected, this.peek());
    }
    return this.next();
  }

peek(): number {
    return this.bytes[this.idx];
  }

peekAhead(steps: number) {
    return this.bytes[this.idx + steps];
  }

peekAt(offset: number) {
    return this.bytes[offset];
  }

done(): boolean {
    return this.idx >= this.length;
  }

offset(): number {
    return this.idx;
  }

slice(start: number, end: number): Uint8Array {
    return this.bytes.slice(start, end);
  }

position(): { line: number; column: number; offset: number } {
    return { line: this.line, column: this.column, offset: this.idx };
  }
}

export default ByteStream;

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