/**
* Patterns.js
*
* Released under LGPL License.
* Copyright (c) 1999-2017 Ephox Corp. All rights reserved
*
* License: http://www.tinymce.com/license
* Contributing: http://www.tinymce.com/contributing
*/
define(
'tinymce.plugins.textpattern.core.Patterns',
[
],
function () {
// Returns a sorted patterns list, ordered descending by start length
var sortPatterns = function (patterns) {
return patterns.sort(function (a, b) {
if (a.start.length > b.start.length) {
return -1;
}
if (a.start.length < b.start.length) {
return 1;
}
return 0;
});
};
// Finds a matching pattern to the specified text
var findPattern = function (patterns, text) {
for (var i = 0; i < patterns.length; i++) {
if (text.indexOf(patterns[i].start) !== 0) {
continue;
}
if (patterns[i].end && text.lastIndexOf(patterns[i].end) !== (text.length - patterns[i].end.length)) {
continue;
}
return patterns[i];
}
};
var isMatchingPattern = function (pattern, text, offset, delta) {
var textEnd = text.substr(offset - pattern.end.length - delta, pattern.end.length);
return textEnd === pattern.end;
};
var hasContent = function (offset, delta, pattern) {
return (offset - delta - pattern.end.length - pattern.start.length) > 0;
};
// Finds the best matching end pattern
var findEndPattern = function (patterns, text, offset, delta) {
var pattern, i;
var sortedPatterns = sortPatterns(patterns);
// Find best matching end
for (i = 0; i < sortedPatterns.length; i++) {
pattern = sortedPatterns[i];
if (pattern.end !== undefined && isMatchingPattern(pattern, text, offset, delta) && hasContent(offset, delta, pattern)) {
return pattern;
}
}
};
return {
findPattern: findPattern,
findEndPattern: findEndPattern
};
}
);
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