Method getPageContentData

src/api/pdf.ts:1915–1962

* Get the concatenated content stream data from a page.

(source: PDF, page: PDFPage)

   * Get the concatenated content stream data from a page.
   */
  private getPageContentData(source: PDF, page: PDFPage): Uint8Array {
    const contents = page.dict.get("Contents", source.getObject.bind(source));

    if (!contents) {
      return new Uint8Array(0);
    }

    // Single stream (resolved from ref or direct)
    if (contents instanceof PdfStream) {
      return contents.getDecodedData();
    }

    // Array of streams - concatenate with newlines
    if (contents instanceof PdfArray) {
      const chunks: Uint8Array[] = [];

      for (let i = 0; i < contents.length; i++) {
        const ref = contents.at(i);

        if (ref instanceof PdfRef) {
          const stream = source.getObject(ref);

          if (stream instanceof PdfStream) {
            if (chunks.length > 0) {
              // Add newline separator
              chunks.push(new Uint8Array([0x0a]));
            }

            chunks.push(stream.getDecodedData());
          }
        }
      }

      // Concatenate all chunks
      const totalLength = chunks.reduce((sum, chunk) => sum + chunk.length, 0);
      const result = new Uint8Array(totalLength);
      let offset = 0;

      for (const chunk of chunks) {
        result.set(chunk, offset);
        offset += chunk.length;
      }

      return result;
    }

    return new Uint8Array(0);
  }

  // ─────────────────────────────────────────────────────────────────────────────
  // Object creation