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a13535ff1f
Prior to this we were also performing highlighting inside HTML tags which was wrong and causing weird behavior. Like, for example, if someone added `emoji` as an alert word then any message containing both emoji and alert word was rendered with a jumbo emoji. Fixes: #4357.
59 lines
2.1 KiB
JavaScript
59 lines
2.1 KiB
JavaScript
var alert_words = (function () {
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var exports = {};
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exports.words = page_params.alert_words;
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// Delete the `page_params.alert_words` since we are its sole user.
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delete page_params.alert_words;
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// escape_user_regex taken from jquery-ui/autocomplete.js,
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// licensed under MIT license.
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function escape_user_regex(value) {
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return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
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}
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exports.process_message = function (message) {
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if (!exports.notifies(message)) {
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return;
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}
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_.each(exports.words, function (word) {
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var clean = escape_user_regex(word);
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var before_punctuation = '\\s|^|>|[\\(\\".,\';\\[]';
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var after_punctuation = '\\s|$|<|[\\)\\"\\?!:.,\';\\]!]';
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var regex = new RegExp('(' + before_punctuation + ')' +
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'(' + clean + ')' +
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'(' + after_punctuation + ')' , 'ig');
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message.content = message.content.replace(regex, function (match, before, word,
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after, offset, content) {
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// Logic for ensuring that we don't muck up rendered HTML.
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var pre_match = content.substring(0, offset);
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// We want to find the position of the `<` and `>` only in the
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// match and the string before it. So, don't include the last
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// character of match in `check_string`. This covers the corner
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// case when there is an alert word just before `<` or `>`.
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var check_string = pre_match + match.substring(0, match.length - 1);
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var in_tag = check_string.lastIndexOf('<') > check_string.lastIndexOf('>');
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// Matched word is inside a HTML tag so don't perform any highlighting.
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if (in_tag === true) {
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return before + word + after;
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}
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return before + "<span class='alert-word'>" + word + "</span>" + after;
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});
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});
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};
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exports.notifies = function (message) {
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return !people.is_current_user(message.sender_email) && message.alerted;
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};
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return exports;
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}());
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if (typeof module !== 'undefined') {
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module.exports = alert_words;
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}
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