| | | 1 | | using System.Collections.Generic; |
| | | 2 | | using System.Text.RegularExpressions; |
| | | 3 | | |
| | | 4 | | public class ChannelUtils |
| | | 5 | | { |
| | | 6 | | private const string CHANNEL_MATCH_REGEX = "^#[a-zA-Z0-9-]{3,20}$"; |
| | | 7 | | private const string NEAR_BY_CHANNEL = "~nearby"; |
| | 1 | 8 | | private static Regex filter = new Regex(CHANNEL_MATCH_REGEX); |
| | | 9 | | |
| | | 10 | | public static List<string> ExtractChannelIdsFromText(string text) |
| | | 11 | | { |
| | 2 | 12 | | List<string> channelsFound = new List<string>(); |
| | | 13 | | |
| | 2 | 14 | | string[] separatedWords = text |
| | | 15 | | .Replace("<noparse>", "") |
| | | 16 | | .Replace("</noparse>", "") |
| | | 17 | | .Replace('\n', ' ') |
| | | 18 | | .Replace('.', ' ') |
| | | 19 | | .Replace(',', ' ') |
| | | 20 | | .Split(' '); |
| | | 21 | | |
| | 76 | 22 | | for (int i = 0; i < separatedWords.Length; i++) |
| | | 23 | | { |
| | 36 | 24 | | if (IsAChannel(separatedWords[i])) |
| | 8 | 25 | | channelsFound.Add(separatedWords[i]); |
| | | 26 | | } |
| | | 27 | | |
| | 2 | 28 | | return channelsFound; |
| | | 29 | | } |
| | | 30 | | |
| | | 31 | | public static bool IsAChannel(string text) |
| | | 32 | | { |
| | 36 | 33 | | var match = filter.Match(text); |
| | 36 | 34 | | return match.Success || text.ToLower() == NEAR_BY_CHANNEL; |
| | | 35 | | } |
| | | 36 | | } |