mirror of
https://github.com/42wim/matterbridge.git
synced 2024-12-04 16:32:02 -08:00
48 lines
1.2 KiB
Go
48 lines
1.2 KiB
Go
|
// Copyright (c) 2015-present Mattermost, Inc. All Rights Reserved.
|
||
|
|
// See LICENSE.txt for license information.
|
||
|
|
|
||
|
|
package model
|
||
|
|
|
||
|
|
import (
|
||
|
|
"regexp"
|
||
|
|
"strings"
|
||
|
|
)
|
||
|
|
|
||
|
|
var atMentionRegexp = regexp.MustCompile(`\B@[[:alnum:]][[:alnum:]\.\-_]*`)
|
||
|
|
|
||
|
|
const usernameSpecialChars = ".-_"
|
||
|
|
|
||
|
|
// PossibleAtMentions returns all substrings in message that look like valid @
|
||
|
|
// mentions.
|
||
|
|
func PossibleAtMentions(message string) []string {
|
||
|
|
var names []string
|
||
|
|
|
||
|
|
if !strings.Contains(message, "@") {
|
||
|
|
return names
|
||
|
|
}
|
||
|
|
|
||
|
|
alreadyMentioned := make(map[string]bool)
|
||
|
|
for _, match := range atMentionRegexp.FindAllString(message, -1) {
|
||
|
|
name := NormalizeUsername(match[1:])
|
||
|
|
if !alreadyMentioned[name] && IsValidUsername(name) {
|
||
|
|
names = append(names, name)
|
||
|
|
alreadyMentioned[name] = true
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return names
|
||
|
|
}
|
||
|
|
|
||
|
|
// TrimUsernameSpecialChar tries to remove the last character from word if it
|
||
|
|
// is a special character for usernames (dot, dash or underscore). If not, it
|
||
|
|
// returns the same string.
|
||
|
|
func TrimUsernameSpecialChar(word string) (string, bool) {
|
||
|
|
len := len(word)
|
||
|
|
|
||
|
|
if len > 0 && strings.LastIndexAny(word, usernameSpecialChars) == (len-1) {
|
||
|
|
return word[:len-1], true
|
||
|
|
}
|
||
|
|
|
||
|
|
return word, false
|
||
|
|
}
|