styleFromMeta

Pandoc filter to apply styles found in the metadata of the document for various objects.

Styling is supported for following types of objects:

• Standalone images
• Inline images
• Links
• Paragraphs (with restrictions, see below)

Styles are read from the metadata of the document: they may reside inside the document or in a separate YAML file. For example

    ---
    img_style :
      html : |
        <div style="clear: both; text-align: center; margin-bottom: 16px">
        <a href="$SRC$" style="margin-left: 10em;" alt="$ALT$">
        <img border="0" src="$SRC$" /></a></div>
      latex : |
        \begin{center}
        \includegraphics{$SRC$}
        \end{center}
    link_style :
      html : |
        <a href="$SRC$" style="margin-left: 1em; margin-right: 1em;">$ALT$</a>
      latex : |
        \href{$SRC$}{\colorbox{green}{$ALT$}}
    para_style :
      html : |
        <span style="display: block; margin-bottom: 16px;"></span>
    ...

declares styles img_style, link_style and para_style. Their names (except for the last) are arbitrarily chosen and may be referred from the document, for example

    ![$img_style$](../images/an_image.png)
    [$link_style$ *here*](http://example.com/)

Placeholders $ALT$, $SRC$ and $TITLE$ from style declarations are to be replaced by concrete data found in the object declaration. In the last example *here* corresponds to $ALT$, and http://example.com/ corresponds to $SRC$.

As soon as paragraphs do not have place where to put extra data, style para_style is applied to all paragraphs in the document. Currently only transformation to a span block is supported. Any contents found between opening and closing span tags are ignored: actual paragraph contents will be inserted inside them.