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var escape = require('escape-html');
// Selector to ignore
var ANNOTATION_IGNORE = '.no-glossary,code,pre,a,script,h1,h2,h3,h4,h5,h6';
function pregQuote( str ) {
return (str+'').replace(/([\\\.\+\*\?\[\^\]\$\(\)\{\}\=\!\<\>\|\:])/g, '\\$1');
}
function replaceText($, el, search, replace, text_only ) {
return $(el).each(function(){
var node = this.firstChild,
val,
new_val,
// Elements to be removed at the end.
remove = [];
// Only continue if firstChild exists.
if ( node ) {
// Loop over all childNodes.
while (node) {
// Only process text nodes.
if ( node.nodeType === 3 ) {
// The original node value.
val = node.nodeValue;
// The new value.
new_val = val.replace( search, replace );
// Only replace text if the new value is actually different!
if ( new_val !== val ) {
if ( !text_only && /</.test( new_val ) ) {
// The new value contains HTML, set it in a slower but far more
// robust way.
$(node).before( new_val );
// Don't remove the node yet, or the loop will lose its place.
remove.push( node );
} else {
// The new value contains no HTML, so it can be set in this
// very fast, simple way.
node.nodeValue = new_val;
}
}
}
node = node.nextSibling;
}
}
// Time to remove those elements!
if (remove.length) $(remove).remove();
});
}
/**
* Annotate text using a list of GlossaryEntry
*
* @param {List<GlossaryEntry>}
* @param {String} glossaryFilePath
* @param {HTMLDom} $
*/
function annotateText(entries, glossaryFilePath, $) {
entries.forEach(function(entry) {
var entryId = entry.getID();
var name = entry.getName();
var description = entry.getDescription();
var searchRegex = new RegExp( '\\b(' + pregQuote(name.toLowerCase()) + ')\\b' , 'gi' );
$('*').each(function() {
var $this = $(this);
if (
$this.is(ANNOTATION_IGNORE) ||
$this.parents(ANNOTATION_IGNORE).length > 0
) return;
replaceText($, this, searchRegex, function(match) {
return '<a href="/' + glossaryFilePath + '#' + entryId + '" '
+ 'class="glossary-term" title="' + escape(description) + '">'
+ match
+ '</a>';
});
});
});
}
module.exports = annotateText;
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