319 lines
11 KiB
JavaScript
319 lines
11 KiB
JavaScript
(function (root, factory) {
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if (typeof define === 'function' && define.amd) {
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// AMD. Register as an anonymous module.
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define('urlize', [], factory);
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} else if (typeof exports === 'object') {
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// Node. Does not work with strict CommonJS, but
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module.exports = factory();
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} else {
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// Browser globals (root is window)
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root.urlize = factory(root.b);
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}
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}(this, function () {
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// From http://blog.stevenlevithan.com/archives/cross-browser-split
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// modified to not add itself to String.prototype.
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/*!
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* Cross-Browser Split 1.1.1
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* Copyright 2007-2012 Steven Levithan <stevenlevithan.com>
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* Available under the MIT License
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* ECMAScript compliant, uniform cross-browser split method
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*/
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/**
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* Splits a string into an array of strings using a regex or string separator. Matches of the
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* separator are not included in the result array. However, if `separator` is a regex that contains
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* capturing groups, backreferences are spliced into the result each time `separator` is matched.
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* Fixes browser bugs compared to the native `String.prototype.split` and can be used reliably
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* cross-browser.
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* @param {String} str String to split.
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* @param {RegExp|String} separator Regex or string to use for separating the string.
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* @param {Number} [limit] Maximum number of items to include in the result array.
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* @returns {Array} Array of substrings.
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* @example
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*
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* // Basic use
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* split('a b c d', ' ');
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* // -> ['a', 'b', 'c', 'd']
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*
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* // With limit
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* split('a b c d', ' ', 2);
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* // -> ['a', 'b']
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*
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* // Backreferences in result array
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* split('..word1 word2..', /([a-z]+)(\d+)/i);
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* // -> ['..', 'word', '1', ' ', 'word', '2', '..']
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*/
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var split;
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// Avoid running twice; that would break the `nativeSplit` reference
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split = split || function (undef) {
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var nativeSplit = String.prototype.split,
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compliantExecNpcg = /()??/.exec("")[1] === undef, // NPCG: nonparticipating capturing group
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self;
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self = function (str, separator, limit) {
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// If `separator` is not a regex, use `nativeSplit`
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if (Object.prototype.toString.call(separator) !== "[object RegExp]") {
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return nativeSplit.call(str, separator, limit);
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}
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var output = [],
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flags = (separator.ignoreCase ? "i" : "") + (separator.multiline ? "m" : "") + (separator.extended ? "x" : "") + // Proposed for ES6
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(separator.sticky ? "y" : ""), // Firefox 3+
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lastLastIndex = 0, // Make `global` and avoid `lastIndex` issues by working with a copy
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separator = new RegExp(separator.source, flags + "g"),
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separator2, match, lastIndex, lastLength;
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str += ""; // Type-convert
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if (!compliantExecNpcg) {
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// Doesn't need flags gy, but they don't hurt
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separator2 = new RegExp("^" + separator.source + "$(?!\\s)", flags);
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}
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/* Values for `limit`, per the spec:
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* If undefined: 4294967295 // Math.pow(2, 32) - 1
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* If 0, Infinity, or NaN: 0
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* If positive number: limit = Math.floor(limit); if (limit > 4294967295) limit -= 4294967296;
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* If negative number: 4294967296 - Math.floor(Math.abs(limit))
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* If other: Type-convert, then use the above rules
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*/
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limit = limit === undef ?
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-1 >>> 0 : // Math.pow(2, 32) - 1
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limit >>> 0; // ToUint32(limit)
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while (match = separator.exec(str)) {
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// `separator.lastIndex` is not reliable cross-browser
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lastIndex = match.index + match[0].length;
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if (lastIndex > lastLastIndex) {
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output.push(str.slice(lastLastIndex, match.index));
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// Fix browsers whose `exec` methods don't consistently return `undefined` for
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// nonparticipating capturing groups
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if (!compliantExecNpcg && match.length > 1) {
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match[0].replace(separator2, function () {
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for (var i = 1; i < arguments.length - 2; i++) {
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if (arguments[i] === undef) {
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match[i] = undef;
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}
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}
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});
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}
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if (match.length > 1 && match.index < str.length) {
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Array.prototype.push.apply(output, match.slice(1));
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}
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lastLength = match[0].length;
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lastLastIndex = lastIndex;
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if (output.length >= limit) {
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break;
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}
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}
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if (separator.lastIndex === match.index) {
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separator.lastIndex++; // Avoid an infinite loop
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}
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}
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if (lastLastIndex === str.length) {
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if (lastLength || !separator.test("")) {
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output.push("");
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}
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} else {
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output.push(str.slice(lastLastIndex));
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}
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return output.length > limit ? output.slice(0, limit) : output;
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};
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return self;
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}();
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function startswith(string, prefix) {
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return string.substr(0, prefix.length) == prefix;
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}
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function endswith(string, suffix) {
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return string.substr(string.length - suffix.length, suffix.length) == suffix;
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}
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// http://stackoverflow.com/a/7924240/17498
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function occurrences(string, substring) {
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var n = 0;
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var pos = 0;
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while (true) {
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pos = string.indexOf(substring, pos);
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if (pos != -1) {
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n++;
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pos += substring.length;
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} else {
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break;
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}
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}
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return n;
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}
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var unquoted_percents_re = /%(?![0-9A-Fa-f]{2})/;
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// Quotes a URL if it isn't already quoted.
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function smart_urlquote(url) {
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// XXX: Not handling IDN.
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//
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// Convert protocol to lowercase.
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var colonIndex = url.indexOf(':');
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url = url.substring(0, colonIndex).toLowerCase() + url.substring(colonIndex);
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//
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// An URL is considered unquoted if it contains no % characters or
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// contains a % not followed by two hexadecimal digits.
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if (url.indexOf('%') == -1 || url.match(unquoted_percents_re)) {
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return encodeURI(url);
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} else {
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return url;
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}
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}
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var trailing_punctuation_django = ['.', ',', ':', ';'];
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var trailing_punctuation_improved = ['.', ',', ':', ';', '.)'];
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var wrapping_punctuation_django = [['(', ')'], ['<', '>'], ['<', '>']];
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var wrapping_punctuation_improved = [['(', ')'], ['<', '>'], ['<', '>'],
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['“', '”'], ['‘', '’']];
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var word_split_re_django = /(\s+)/;
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var word_split_re_improved = /([\s<>"]+)/;
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var simple_url_re = /^https?:\/\/\w/i;
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var django_top_level_domains = ['com', 'edu', 'gov', 'int', 'mil', 'net', 'org'];
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var simple_email_re = /^\S+@\S+\.\S+$/;
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function htmlescape(html, options) {
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var escaped = html
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.replace(/&/g, "&")
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.replace(/</g, "<")
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.replace(/>/g, ">")
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.replace(/"/g, """)
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.replace(/'/g, "'");
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if (options && !options.django_compatible) { // only on django_compatible because => https://github.com/ljosa/urlize.js/pull/9
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escaped = escaped.replace(/\//g, "/");
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}
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return escaped;
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}
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function urlescape(url) {
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return url // Do not escape slash, because is used for the http:// part
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.replace(/&/g, "&")
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.replace(/</g, "<")
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.replace(/>/g, ">")
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.replace(/"/g, """);
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}
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function convert_arguments(args) {
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var options;
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if (args.length == 2 && typeof (args[1]) == 'object') {
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options = args[1];
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} else {
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options = {
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nofollow: args[1],
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autoescape: args[2],
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trim_url_limit: args[3],
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target: args[4]
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};
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}
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if (!('django_compatible' in options)) options.django_compatible = true;
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return options;
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}
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function urlize(text, options) {
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options = convert_arguments(arguments);
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function trim_url(x, limit) {
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if (options.trim === "http" || options.trim === "www")
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x = x.replace(/^https?:\/\//i, '');
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if (options.trim === "www")
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x = x.replace(/^www\./i, '');
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if (limit === undefined) limit = options.trim_url_limit;
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if (limit && x.length > limit) return x.substr(0, limit - 3) + '...';
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return x;
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}
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var safe_input = false;
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var word_split_re = options.django_compatible ? word_split_re_django : word_split_re_improved;
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var trailing_punctuation = options.django_compatible ? trailing_punctuation_django : trailing_punctuation_improved;
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var wrapping_punctuation = options.django_compatible ? wrapping_punctuation_django : wrapping_punctuation_improved;
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var simple_url_2_re = new RegExp('^www\\.|^(?!http)\\w[^@' + (options.django_compatible ? '' : '.') + ']+\\.(' +
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(options.top_level_domains || django_top_level_domains).join('|') +
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')$',
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"i");
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var words = split(text, word_split_re);
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for (var i = 0; i < words.length; i++) {
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var word = words[i];
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var match = undefined;
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if (word.indexOf('.') != -1 || word.indexOf('@') != -1 || word.indexOf(':') != -1) {
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// Deal with punctuation.
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var lead = '';
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var middle = word;
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var trail = '';
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for (var j = 0; j < trailing_punctuation.length; j++) {
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var punctuation = trailing_punctuation[j];
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if (endswith(middle, punctuation)) {
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middle = middle.substr(0, middle.length - punctuation.length);
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trail = punctuation + trail;
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}
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}
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for (var j = 0; j < wrapping_punctuation.length; j++) {
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var opening = wrapping_punctuation[j][0];
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var closing = wrapping_punctuation[j][1];
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if (startswith(middle, opening)) {
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middle = middle.substr(opening.length);
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lead = lead + opening;
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}
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// Keep parentheses at the end only if they're balanced.
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if (endswith(middle, closing) && occurrences(middle, closing) == occurrences(middle, opening) + 1) {
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middle = middle.substr(0, middle.length - closing.length);
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trail = closing + trail;
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}
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}
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// Make URL we want to point to.
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var url = undefined;
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var nofollow_attr = options.nofollow ? ' rel="nofollow"' : '';
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var target_attr = options.target ? ' target="' + options.target + '"' : '';
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if (middle.match(simple_url_re)) url = smart_urlquote(middle);
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else if (middle.match(simple_url_2_re)) url = smart_urlquote('http://' + middle);
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else if (middle.indexOf(':') == -1 && middle.match(simple_email_re)) {
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// XXX: Not handling IDN.
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url = 'mailto:' + middle;
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nofollow_attr = '';
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}
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// Make link.
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if (url) {
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var trimmed = trim_url(middle);
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if (options.autoescape) {
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// XXX: Assuming autoscape == false
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lead = htmlescape(lead, options);
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trail = htmlescape(trail, options);
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url = urlescape(url);
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trimmed = htmlescape(trimmed, options);
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}
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middle = '<a href="' + url + '"' + nofollow_attr + target_attr + '>' + trimmed + '</a>';
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words[i] = lead + middle + trail;
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} else {
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if (safe_input) {
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// Do nothing, as we have no mark_safe.
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} else if (options.autoescape) {
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words[i] = htmlescape(word, options);
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}
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}
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} else if (safe_input) {
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// Do nothing, as we have no mark_safe.
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} else if (options.autoescape) {
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words[i] = htmlescape(word, options);
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}
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}
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return words.join('');
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}
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urlize.test = {};
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urlize.test.split = split;
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urlize.test.convert_arguments = convert_arguments;
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return urlize;
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}));
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