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Added $$ parsing #3

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Added $$ parsing #3

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32 changes: 26 additions & 6 deletions scripts/frontend.php
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Original file line number Diff line number Diff line change
Expand Up @@ -7,15 +7,15 @@ function katex_init() {

if (is_array($katex_options)) {
if (isset($katex_options['katex_jsdelivr_setting']) && $katex_options['katex_jsdelivr_setting'] == 1) {
wp_register_style('katex', '//cdn.jsdelivr.net/katex/0.1.0/katex.min.css', false, null);
wp_register_script('katex', '//cdn.jsdelivr.net/katex/0.1.0/katex.min.js', false, array('jquery'));
wp_register_style('katex', '//cdn.jsdelivr.net/katex/0.1.1/katex.min.css', false, null);
wp_register_script('katex', '//cdn.jsdelivr.net/katex/0.1.1/katex.min.js', array('jquery'), null);
} else {
wp_register_style('katex', plugins_url('assets/katex.min.css', dirname(__FILE__)), false, null);
wp_register_script('katex', plugins_url('assets/katex.min.js', dirname(__FILE__)), false, array('jquery'));
wp_register_style('katex', plugins_url('assets/katex.min.css', dirname(__FILE__)), false, '0.1.1');
wp_register_script('katex', plugins_url('assets/katex.min.js', dirname(__FILE__)), array('jquery'), '0.1.1', true);
}
} else {
wp_register_style('katex', plugins_url('assets/katex.min.css', dirname(__FILE__)), false, null);
wp_register_script('katex', plugins_url('assets/katex.min.js', dirname(__FILE__)), false, array('jquery'));
wp_register_style('katex', plugins_url('assets/katex.min.css', dirname(__FILE__)), false, '0.1.1');
wp_register_script('katex', plugins_url('assets/katex.min.js', dirname(__FILE__)), array('jquery'), '0.1.1', true);
}
}
add_action('init', 'katex_init');
Expand All @@ -32,6 +32,25 @@ function katex_handler($atts, $content = null){
}
add_shortcode('latex', 'katex_handler');

add_filter( 'the_content', 'content_parser', 7 );

function content_parser($content)
{
$content = preg_replace_callback('/(!*\$\$(.*?)\$\$)/s','do_doubledollars',$content);
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@grinsted grinsted Apr 6, 2016

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suggestion replace .* with [^\n]+


return $content;
}

function do_doubledollars($m)
{
$formula_text = trim($m[2]);

wp_enqueue_script('katex');
wp_enqueue_style('katex');

return '<script type="text/katex">' . html_entity_decode($formula_text) . '</script>';
}

function katex_rubber() {
?>
<script>
Expand All @@ -47,4 +66,5 @@ function katex_rubber() {
</script>
<?php
}

add_action('wp_footer', 'katex_rubber', 100);