Multiple authors squished together in dc: creator field

[crystalfp]

Attach (recommended) or Link to PDF file here:
http://mariovalle.name/SciViz/1-s2.0-S0097849310001846-main.pdf

Configuration:

• Web browser and its version: Using pdf.js from Node.js through npm package pdfjs-dist
• Operating system and its version: Windows 10 64bits
• PDF.js version: 2.6.347
• Is a browser extension: No

Steps to reproduce the problem:

1. Load the file in acrobat
2. In document properties look at the Author field: it is Samuel Silva; Beatriz Sousa Santos; Joaquim Madeira
3. Look at Additional metadata > advanced > dc:creator. It is marked as seq container and contains the 3 authors.
4. Using the code below gives: "Author": "Samuel Silva" that is, only the first one. And "dc:creator": "Samuel SilvaBeatriz Sousa SantosJoaquim Madeira", that is the three authors squashed together without separators.

What is the expected behavior? (add screenshot)
In both fields the three authors as a single string with some sort of separator between them. Note that other pdf files that contains multiple authors already have them as a single string with names separated by commas.

The code used:

var pdfjsLib = require("pdfjs-dist/es5/build/pdf.js");
var pdfPath = "http://mariovalle.name/SciViz/1-s2.0-S0097849310001846-main.pdf";
var loadingTask = pdfjsLib.getDocument(pdfPath);
loadingTask.promise
  .then(function (doc) {
    var lastPromise;
    lastPromise = doc.getMetadata().then(function (data) {
      console.log(JSON.stringify(data.info, null, 2));
      if (data.metadata) {
        console.log(JSON.stringify(data.metadata.getAll(), null, 2));
      }
    });
  });

[Snuffleupagus]

Using the code below gives: "Author": "Samuel Silva" that is, only the first one.
console.log(JSON.stringify(data.info, null, 2));

That data comes from the Author field in the /Info dictionary of the PDF document, and that entry only contains one name; hence this part works as expected.

And "dc:creator": "Samuel SilvaBeatriz Sousa SantosJoaquim Madeira", that is the three authors squashed together without separators.
console.log(JSON.stringify(data.metadata.getAll(), null, 2));

Starting with PDF.js version 2.7.570, please see https://github.com/mozilla/pdf.js/releases/tag/v2.7.570, the dc:creator now returns an Array (fixed by PR #12838); hence this issue is already fixed.

[crystalfp]

Perfect! When it will be available as npm package?
Less important, but the same problem seems to happen with "dc:subject" field in the provided file. In this case the "Keywords" field is correct,

[Snuffleupagus]

Perfect! When it will be available as npm package?

https://www.npmjs.com/package/pdfjs-dist?activeTab=versions

but the same problem seems to happen with "dc:subject" field in the provided file.

See the PR linked above.

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For future reference: Please open separate issues for different bugs, since having multiple different problems reported in one issue can make tracking things somewhat difficult in general.

Also, if possible, try and test against the development version of PDF.js, see e.g. https://github.com/mozilla/pdf.js#online-demo, since we generally don't backport fixes to already existing releases.