65 lines
2.4 KiB
C#
65 lines
2.4 KiB
C#
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using SharpChat.Channels;
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using SharpChat.Events;
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using SharpChat.Messages;
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using SharpChat.Protocol.IRC.Channels;
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using SharpChat.Protocol.IRC.Users;
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using SharpChat.Users;
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace SharpChat.Protocol.IRC.ServerCommands {
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public class ServerPrivateMessageCommand : ServerCommand {
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public const string NAME = @"PRIVMSG";
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public override string CommandName => NAME;
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private IChannel Channel { get; }
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public override IUser Sender { get; }
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private string Line { get; }
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public ServerPrivateMessageCommand(IChannel channel, IUser sender, string line) {
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Channel = channel ?? throw new ArgumentNullException(nameof(channel));
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Sender = sender ?? throw new ArgumentNullException(nameof(sender));
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Line = line ?? throw new ArgumentNullException(nameof(line));
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}
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protected override string BuildLine() {
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return $@"{Channel.GetIRCName()} :{Line}";
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}
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public static IEnumerable<ServerPrivateMessageCommand> Split(IMessage message) {
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return Split(message.Channel, message.Sender, message.Text);
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}
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public static IEnumerable<ServerPrivateMessageCommand> Split(IChannel channel, IUser sender, string text) {
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Queue<string> parts = new(SplitText(text));
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while(parts.TryDequeue(out string part))
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yield return new ServerPrivateMessageCommand(channel, sender, part);
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}
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public static IEnumerable<string> SplitText(string text, int targetLength = 400) {
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Queue<string> lines = new(text.Split('\n'));
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static int getStartingChar(byte[] buff, int index) {
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return (buff[index] & 0xC0) == 0x80 ? getStartingChar(buff, index - 1) : index;
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};
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while(lines.TryDequeue(out string rawLine)) {
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byte[] line = Encoding.UTF8.GetBytes(rawLine.Trim());
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int chunks = line.Length / targetLength;
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int start = 0;
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for(int i = chunks; i > 0; --i) {
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int end = getStartingChar(line, start + targetLength);
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yield return Encoding.UTF8.GetString(line, start, end - start);
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start = end;
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}
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if(line.Length > start)
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yield return Encoding.UTF8.GetString(line, start, line.Length - start);
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}
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}
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}
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}
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