将HTML转换为ENML

Question

I am trying to write an extension for Gmail that lets you save mail as a note in Evernote, but Evernote's ENML is pretty strict, as in, it doesn't allow external styles.

So what I am looking to do is something like so -
- convert external styles to inline,
- validate/balance the tags
- purify the tags that Evernote considers offensive

So before I try to jump into writing a parser for above, does anyone know of a php library that is already doing the heavy lifting?

If not, what is the way to go with above requirement?

Answer 1

If the only interesting problem is converting external styles to inline styles you can use https://github.com/tijsverkoyen/CssToInlineStyles. It also has a composer package at packagist for easy deployment.

I used it like this:

<?php

// ...

use \TijsVerkoyen\CssToInlineStyles\CssToInlineStyles;

// ...

$css = file_get_contents('./content.html');

// create instance
$cssToInlineStyles = new CssToInlineStyles();
$css = file_get_contents('./styles.css');

$cssToInlineStyles->setHTML($content);
$cssToInlineStyles->setCSS($css);

$mail_content = $cssToInlineStyles->convert();