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Added hability to ignore accent while highlighting #1

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Added hability to ignore accent while highlighting #1

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140 changes: 100 additions & 40 deletions jquery.highlight.js
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Original file line number Diff line number Diff line change
Expand Up @@ -4,11 +4,16 @@
* Based on highlight v3 by Johann Burkard
* http://johannburkard.de/blog/programming/javascript/highlight-javascript-text-higlighting-jquery-plugin.html
*
* Highlighting with accents ignoring based on
* http://stackoverflow.com/questions/6092516/highlight-accented-characters,
* implemented in node and highlight term by Cedric Gatay
*
* Code a little bit refactored and cleaned (in my humble opinion).
* Most important changes:
* - has an option to highlight only entire words (wordsOnly - false by default),
* - has an option to be case sensitive (caseSensitive - false by default)
* - highlight element tag and class names can be specified in options
* - has an option to be case sensitive (caseSensitive - false by default),
* - highlight element tag and class names can be specified in options,
* - has an option to ignore accents in words (ignoreAccents - true by default)
*
* Usage:
* // wrap every occurrance of text 'lorem' in content
Expand Down Expand Up @@ -36,6 +41,9 @@
* // remove custom highlight
* $('#content').unhighlight({ element: 'em', className: 'important' });
*
* //disable accents ignore (cafe will not highlight café)
* $('#content').highlight("cafe", {ignoreAccents : false});
*
*
* Copyright (c) 2009 Bartek Szopka
*
Expand All @@ -44,65 +52,117 @@
*/

jQuery.extend({
highlight: function (node, re, nodeName, className) {
if (node.nodeType === 3) {
var match = node.data.match(re);
if (match) {
var highlight = document.createElement(nodeName || 'span');
highlight.className = className || 'highlight';
var wordNode = node.splitText(match.index);
wordNode.splitText(match[0].length);
var wordClone = wordNode.cloneNode(true);
highlight.appendChild(wordClone);
wordNode.parentNode.replaceChild(highlight, wordNode);
return 1; //skip added node in parent
}
} else if ((node.nodeType === 1 && node.childNodes) && // only element nodes that have children
!/(script|style)/i.test(node.tagName) && // ignore script and style nodes
!(node.tagName === nodeName.toUpperCase() && node.className === className)) { // skip if already highlighted
for (var i = 0; i < node.childNodes.length; i++) {
i += jQuery.highlight(node.childNodes[i], re, nodeName, className);
}
}
return 0;
}
});
highlight: function (node, re, nodeName, className, ignoreAccents) {
if (node.nodeType === 3) {

var nodeData = node.data;
if (ignoreAccents) {
nodeData = jQuery.removeDiacratics(nodeData);
}
var match = nodeData.match(re);
if (match) {
var highlight = document.createElement(nodeName || 'span');
highlight.className = className || 'highlight';
var wordNode = node.splitText(match.index);
wordNode.splitText(match[0].length);
var wordClone = wordNode.cloneNode(true);
highlight.appendChild(wordClone);
wordNode.parentNode.replaceChild(highlight, wordNode);
return 1; //skip added node in parent
}
} else if ((node.nodeType === 1 && node.childNodes) && // only element nodes that have children
!/(script|style)/i.test(node.tagName) && // ignore script and style nodes
!(node.tagName === nodeName.toUpperCase() &&
node.className === className)) { // skip if already highlighted
for (var i = 0; i < node.childNodes.length; i++) {
i += jQuery.highlight(node.childNodes[i], re, nodeName, className, ignoreAccents);
}
}
return 0;
},

removeDiacratics : function(str) {
var rExps = [
{re:/[\xC0-\xC6]/g, ch:'A'},
{re:/[\xE0-\xE6]/g, ch:'a'},
{re:/[\xC8-\xCB]/g, ch:'E'},
{re:/[\xE8-\xEB]/g, ch:'e'},
{re:/[\xCC-\xCF]/g, ch:'I'},
{re:/[\xEC-\xEF]/g, ch:'i'},
{re:/[\xD2-\xD6]/g, ch:'O'},
{re:/[\xF2-\xF6]/g, ch:'o'},
{re:/[\xD9-\xDC]/g, ch:'U'},
{re:/[\xF9-\xFC]/g, ch:'u'},
{re:/[\xD1]/g, ch:'N'},
{re:/[\xF1]/g, ch:'n'}
];
for (var i = 0, len = rExps.length; i < len; i++) {
str = str.replace(rExps[i].re, rExps[i].ch);
}
return str;
}

});

jQuery.fn.unhighlight = function (options) {
var settings = { className: 'highlight', element: 'span' };
jQuery.extend(settings, options);

return this.find(settings.element + "." + settings.className).each(function () {
var parent = this.parentNode;
parent.replaceChild(this.firstChild, this);
parent.normalize();
}).end();
return this.find(settings.element + "." + settings.className).each(
function () {
var parent = this.parentNode;
parent.replaceChild(this.firstChild, this);
parent.normalize();
}).end();
};

jQuery.fn.highlight = function (words, options) {
var settings = { className: 'highlight', element: 'span', caseSensitive: false, wordsOnly: false };
var settings = { className: 'highlight', element: 'span', caseSensitive: false, wordsOnly: false, ignoreAccents : true };
jQuery.extend(settings, options);

if (words.constructor === String) {
words = [words];
}
words = jQuery.grep(words, function(word, i){
return word != '';
words = jQuery.grep(words, function(word, i) {
return word != '';
});
words = jQuery.map(words, function(word, i) {
return word.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
return word.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, "\\$&");
});
if (words.length == 0) { return this; };
if (words.length == 0) {
return this;
}


var flag = settings.caseSensitive ? "" : "i";
var pattern = "(" + words.join("|") + ")";
if (settings.wordsOnly) {
pattern = "\\b" + pattern + "\\b";
}
var re = new RegExp(pattern, flag);


var re = [];
re.push(new RegExp(pattern, flag));

if (settings.ignoreAccents) {
var wordsNoAccents = jQuery.map(words, function(word, i) {
return jQuery.removeDiacratics(word);
});
var patternNoAccents;
if (settings.wordsOnly) {
// workaround for word separation using \\b
patternNoAccents = "( " + wordsNoAccents.join("|") + " )";
patternNoAccents = "\\b" + patternNoAccents + "\\b";
} else {
patternNoAccents = "(" + wordsNoAccents.join("|") + ")";
}
if (patternNoAccents!=pattern) {
re.push(new RegExp(patternNoAccents, flag));
}
}

return this.each(function () {
jQuery.highlight(this, re, settings.element, settings.className);
for (var i in re) {
jQuery.highlight(this, re[i], settings.element, settings.className, settings.ignoreAccents);
}
});
};