mammoth.js
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mwilliamson
No warning about charts
Mammoth produces a warning for some unrecognized content, for example, an equation object:
An unrecognised element was ignored: {http://schemas.openxmlformats.org/officeDocument/2006/math}oMathPara
It doesn't however produce an error when a chart is embedded and fails silently.
Attached is a sample document with both objects embedded. Only one warning should appear when converted:
This is likely a result of the way images are handled. Specifically, when a wp:inline element is found, the parser tries to find any images, and ignores everything else.
In order to handle images, whenever Mammoth finds a wp:inline element, it tries to find any images, and ignores everything else, including any charts (which, as you say, aren't images), without any warnings.
Is it possible a warning could be introduced.
For some context, in our workflow, the person converting a documents isn't always familiar with the contents of the document. It would be useful for them to know if anything is ignored so it can be dealt with manually.
It's certainly possible, but I've no idea when I'd have time to take a look.
Do you know which file(s) would need to be modified, or would you add a new file to handle this?
The function readDrawingElement() in body-reader.js needs changing. The main work is in working out which children of those elements should actually be ignored (such as properties elements) and which should emit warnings (such as charts). We want to avoid emitting warnings for the case that's already handled i.e. images. Actually changing the code should be reasonably straightforward.