Re: Inline SVG in markdown, converted to ODT

[Christophe Demko <chdemko-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

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$ pandoc -t native ![SVG Image](data:image/svg+xml;charset=utf-8,<?xml 
version="1.0"?><svg xmlns="http://www.w3.org/2000/svg" 
<http://www.w3.org/2000/svg> width="100" height="100" viewBox="-150 -150 
300 300"><rect x="-100" y="-100" rx="8" ry="8" width="200" height="200" 
style="fill:#CCCCFF;stroke:#000099"/></svg>) [ Figure ( "" , [] , [] ) 
(Caption Nothing [ Plain [ Str "SVG" , Space , Str "Image" ] ]) [ Plain [ 
Image ( "" , [] , [] ) [ Str "SVG" , Space , Str "Image" ] ( 
"data:image/svg+xml;charset=utf-8,%3C?xml%20version=%221.0%22?%3E%3Csvg%20xmlns=%22http://www.w3.org/2000/svg%22%20width=%22100%22%20height=%22100%22%20viewBox=%22-150%20-150%20300%20300%22%3E%3Crect%20x=%22-100%22%20y=%22-100%22%20rx=%228%22%20ry=%228%22%20width=%22200%22%20height=%22200%22%20style=%22fill:#CCCCFF;stroke:#000099%22/%3E%3C/svg%3E" 
, "" ) ] ] ]

Le samedi 12 août 2023 à 19:59:59 UTC+2, Christophe Demko a écrit :

> It's because pandoc converts the URL of an image using HTML encoding and 
> does not the reverse job while producing output.
>
> Le samedi 12 août 2023 à 19:42:38 UTC+2, nopria a écrit :
>
>> Yes it's an option, but I would like to understand why using plain text 
>> does not work.
>>
>> Il giorno venerdì 11 agosto 2023 alle 12:23:32 UTC+2 Christophe Demko ha 
>> scritto:
>>
>>> You could write a filter that convert a Inline SVG image defined by 
>>> plain text into a Inline SVG image defined by BASE64
>>>
>>> Le jeudi 10 août 2023 à 15:39:40 UTC+2, nopria a écrit :
>>>
>>>> Following other tentatives 
>>>> <https://github.com/jgm/pandoc/issues/4058#issuecomment-908942852> of 
>>>> markdown to DOCX conversion containing external SVG, I tried to convert to 
>>>> ODT a markdown containing **inline** SVG, such as the one below:
>>>>
>>>> # Example document
>>>>
>>>> This is an example of Markdown document with inline embedded SVG images.
>>>>
>>>> Inline SVG image defined by plain text:
>>>>
>>>> ![SVG Image](data:image/svg+xml;charset=utf-8,<?xml version="1.0"?><svg 
>>>> xmlns="http://www.w3.org/2000/svg" width="100" height="100" 
>>>> viewBox="-150 -150 300 300"><rect x="-100" y="-100" rx="8" ry="8" 
>>>> width="200" height="200" style="fill:#CCCCFF;stroke:#000099"/></svg>)
>>>>
>>>> Inline SVG image defined by BASE64 converted text:
>>>>
>>>> ![SVG 
>>>> Image](data:image/svg+xml;base64,PD94bWwgdmVyc2lvbj0iMS4wIj8+PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIxMDAiIGhlaWdodD0iMTAwIiB2aWV3Qm94PSItMTUwIC0xNTAgMzAwIDMwMCI+PHJlY3QgeD0iLTEwMCIgeT0iLTEwMCIgcng9IjgiIHJ5PSI4IiB3aWR0aD0iMjAwIiBoZWlnaHQ9IjIwMCIgc3R5bGU9ImZpbGw6I0NDQ0NGRjtzdHJva2U6IzAwMDA5OSIvPjwvc3ZnPg==)
>>>>
>>>> Some math to check if it works;
>>>>
>>>> $$A_c = 23 r^2 - v$$
>>>>
>>>> using command
>>>>
>>>> pandoc example.md -o example.odt
>>>>
>>>> with Pandoc 3.1.6.1. As you may confirm yourself, the BASE64 inline SVG 
>>>> is correctly converted, while the textual inline SVG is not displayed in 
>>>> the resulting ODT and the following warning appears at conversion:
>>>>
>>>> [WARNING] Could not fetch resource data:image/svg+xml;charset=utf-8 ...
>>>>
>>>> Given that a BASE64 inline SVG is enough to do the job, I would prefer 
>>>> to avoid the BASE64 conversion and go with the plain text inline SVG.
>>>>
>>>> I already tried html encoding of SVG text and uppercase "utf8" without 
>>>> success.
>>>>
>>>> I choose ODT because it's open and because it seems to display SVG 
>>>> natively without needing PNG conversion (I hope it works with more complex 
>>>> SVG too), which is a great feature.
>>>>
>>>> Thank in advance for your time.
>>>>
>>>

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