zulip/static/js/alert_words.js

59 lines
2.5 KiB
JavaScript

exports.words = page_params.alert_words;
exports.set_words = function (value) {
exports.words = value;
};
// Delete the `page_params.alert_words` since we are its sole user.
delete page_params.alert_words;
// escape_user_regex taken from jquery-ui/autocomplete.js,
// licensed under MIT license.
function escape_user_regex(value) {
return value.replace(/[\-\[\]{}()*+?.,\\\^$|#\s]/g, "\\$&");
}
exports.process_message = function (message) {
// Parsing for alert words is expensive, so we rely on the host
// to tell us there any alert words to even look for.
if (!message.alerted) {
return;
}
_.each(exports.words, function (word) {
var clean = escape_user_regex(word);
var before_punctuation = '\\s|^|>|[\\(\\".,\';\\[]';
var after_punctuation = '\\s|$|<|[\\)\\"\\?!:.,\';\\]!]';
var regex = new RegExp('(' + before_punctuation + ')' +
'(' + clean + ')' +
'(' + after_punctuation + ')', 'ig');
message.content = message.content.replace(regex, function (match, before, word,
after, offset, content) {
// Logic for ensuring that we don't muck up rendered HTML.
var pre_match = content.substring(0, offset);
// We want to find the position of the `<` and `>` only in the
// match and the string before it. So, don't include the last
// character of match in `check_string`. This covers the corner
// case when there is an alert word just before `<` or `>`.
var check_string = pre_match + match.substring(0, match.length - 1);
var in_tag = check_string.lastIndexOf('<') > check_string.lastIndexOf('>');
// Matched word is inside a HTML tag so don't perform any highlighting.
if (in_tag === true) {
return before + word + after;
}
return before + "<span class='alert-word'>" + word + "</span>" + after;
});
});
};
exports.notifies = function (message) {
// We exclude ourselves from notifications when we type one of our own
// alert words into a message, just because that can be annoying for
// certain types of workflows where everybody on your team, including
// yourself, sets up an alert word to effectively mention the team.
return !people.is_current_user(message.sender_email) && message.alerted;
};
window.alert_words = exports;