Element Reader - Sample Code

Requirements

These packages are required to use these features in production. Trial keys have unlimited access to all features

Web SDKFull API

Sample JavaScript code for using Apryse Web SDK to traverse the page display list using ElementReader. Learn more about our full PDF Data Extraction SDK Capabilities.

Implementation steps

Step 1: Follow get started in your preferred web stack for WebViewer Step 2: Enable the full API by passing the fullAPI option into the WebViewer constructor Step 3: Add the sample code provided in this guide

This full sample is one of many included in the manual download of WebViewer.

//---------------------------------------------------------------------------------------
// Copyright (c) 2001-2023 by Apryse Software Inc. All Rights Reserved.
// Consult legal.txt regarding legal and license information.
//---------------------------------------------------------------------------------------

(exports => {
  exports.runElementReaderTest = () => {
    const PDFNet = exports.Core.PDFNet;

    const ProcessElements = async reader => {
      // Read page contents
      for (let element = await reader.next(); element !== null; element = await reader.next()) {
        const temp = await element.getType();
        switch (temp) {
          case PDFNet.Element.Type.e_path: // Process path data...
            {
              const data = await element.getPathData();
              /* eslint-disable @typescript-eslint/no-unused-vars */
              const operators = data.operators;
              const points = data.points;
              /* eslint-enable @typescript-eslint/no-unused-vars */
            }
            break;
          case PDFNet.Element.Type.e_text: // Process text strings...
            {
              const data = await element.getTextString();
              console.log(data);
            }
            break;
          case PDFNet.Element.Type.e_form: // Process form XObjects
            reader.formBegin();
            await ProcessElements(reader);
            reader.end();
            break;
          default:
        }
      }
    };

    const main = async () => {
      console.log('-------------------------------------------------');
      console.log('Sample 1 - Extract text data from all pages in the document.');
      console.log('Opening the input pdf...');
      const ret = 0;

      // Relative path to the folder containing test files.
      const inputUrl = '../TestFiles/';

      const doc = await PDFNet.PDFDoc.createFromURL(inputUrl + 'newsletter.pdf'); // await if there is ret that we care about.
      doc.initSecurityHandler();
      doc.lock();

      // eslint-disable-next-line @typescript-eslint/no-unused-vars
      const pgnum = await doc.getPageCount();
      const pageReader = await PDFNet.ElementReader.create();
      const itr = await doc.getPageIterator(1);

      // Read every page
      for (itr; await itr.hasNext(); itr.next()) {
        const curritr = await itr.current();
        pageReader.beginOnPage(curritr);
        await ProcessElements(pageReader);
        pageReader.end();
      }

      console.log('Done.');
      return ret;
    };

    // add your own license key as the second parameter, e.g. PDFNet.runWithCleanup(main, 'YOUR_LICENSE_KEY')
    PDFNet.runWithCleanup(main);
  };
})(window);
// eslint-disable-next-line spaced-comment
//# sourceURL=ElementReaderTest.js