334 lines
12 KiB
C#
334 lines
12 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.IO;
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using System.Linq;
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using System.Text.RegularExpressions;
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using System.Threading;
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using System.Threading.Tasks;
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using MediaBrowser.Common.Extensions;
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using MediaBrowser.Common.Net;
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using MediaBrowser.Controller;
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using MediaBrowser.Controller.LiveTv;
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using MediaBrowser.Model.Extensions;
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using Microsoft.Extensions.Logging;
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namespace Emby.Server.Implementations.LiveTv.TunerHosts
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{
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public class M3uParser
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{
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private readonly ILogger _logger;
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private readonly IHttpClient _httpClient;
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private readonly IServerApplicationHost _appHost;
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public M3uParser(ILogger logger, IHttpClient httpClient, IServerApplicationHost appHost)
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{
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_logger = logger;
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_httpClient = httpClient;
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_appHost = appHost;
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}
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public async Task<List<ChannelInfo>> Parse(string url, string channelIdPrefix, string tunerHostId, CancellationToken cancellationToken)
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{
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// Read the file and display it line by line.
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using (var reader = new StreamReader(await GetListingsStream(url, cancellationToken).ConfigureAwait(false)))
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{
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return GetChannels(reader, channelIdPrefix, tunerHostId);
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}
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}
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public List<ChannelInfo> ParseString(string text, string channelIdPrefix, string tunerHostId)
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{
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// Read the file and display it line by line.
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using (var reader = new StringReader(text))
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{
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return GetChannels(reader, channelIdPrefix, tunerHostId);
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}
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}
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public Task<Stream> GetListingsStream(string url, CancellationToken cancellationToken)
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{
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if (url.StartsWith("http", StringComparison.OrdinalIgnoreCase))
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{
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return _httpClient.Get(new HttpRequestOptions
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{
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Url = url,
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CancellationToken = cancellationToken,
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// Some data providers will require a user agent
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UserAgent = _appHost.ApplicationUserAgent
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});
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}
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return Task.FromResult((Stream)File.OpenRead(url));
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}
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private const string ExtInfPrefix = "#EXTINF:";
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private List<ChannelInfo> GetChannels(TextReader reader, string channelIdPrefix, string tunerHostId)
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{
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var channels = new List<ChannelInfo>();
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string line;
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string extInf = string.Empty;
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while ((line = reader.ReadLine()) != null)
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{
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line = line.Trim();
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if (string.IsNullOrWhiteSpace(line))
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{
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continue;
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}
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if (line.StartsWith("#EXTM3U", StringComparison.OrdinalIgnoreCase))
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{
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continue;
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}
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if (line.StartsWith(ExtInfPrefix, StringComparison.OrdinalIgnoreCase))
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{
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extInf = line.Substring(ExtInfPrefix.Length).Trim();
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_logger.LogInformation("Found m3u channel: {0}", extInf);
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}
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else if (!string.IsNullOrWhiteSpace(extInf) && !line.StartsWith("#", StringComparison.OrdinalIgnoreCase))
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{
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var channel = GetChannelnfo(extInf, tunerHostId, line);
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if (string.IsNullOrWhiteSpace(channel.Id))
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{
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channel.Id = channelIdPrefix + line.GetMD5().ToString("N", CultureInfo.InvariantCulture);
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}
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else
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{
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channel.Id = channelIdPrefix + channel.Id.GetMD5().ToString("N", CultureInfo.InvariantCulture);
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}
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channel.Path = line;
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channels.Add(channel);
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extInf = string.Empty;
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}
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}
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return channels;
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}
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private ChannelInfo GetChannelnfo(string extInf, string tunerHostId, string mediaUrl)
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{
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var channel = new ChannelInfo()
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{
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TunerHostId = tunerHostId
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};
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extInf = extInf.Trim();
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var attributes = ParseExtInf(extInf, out string remaining);
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extInf = remaining;
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if (attributes.TryGetValue("tvg-logo", out string value))
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{
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channel.ImageUrl = value;
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}
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channel.Name = GetChannelName(extInf, attributes);
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channel.Number = GetChannelNumber(extInf, attributes, mediaUrl);
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attributes.TryGetValue("tvg-id", out string tvgId);
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attributes.TryGetValue("channel-id", out string channelId);
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channel.TunerChannelId = string.IsNullOrWhiteSpace(tvgId) ? channelId : tvgId;
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var channelIdValues = new List<string>();
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if (!string.IsNullOrWhiteSpace(channelId))
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{
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channelIdValues.Add(channelId);
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}
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if (!string.IsNullOrWhiteSpace(tvgId))
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{
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channelIdValues.Add(tvgId);
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}
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if (channelIdValues.Count > 0)
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{
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channel.Id = string.Join("_", channelIdValues);
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}
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return channel;
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}
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private string GetChannelNumber(string extInf, Dictionary<string, string> attributes, string mediaUrl)
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{
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var nameParts = extInf.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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var nameInExtInf = nameParts.Length > 1 ? nameParts[nameParts.Length - 1].Trim() : null;
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string numberString = null;
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string attributeValue;
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double doubleValue;
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if (attributes.TryGetValue("tvg-chno", out attributeValue))
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{
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if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out doubleValue))
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{
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numberString = attributeValue;
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}
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}
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if (!IsValidChannelNumber(numberString))
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{
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if (attributes.TryGetValue("tvg-id", out attributeValue))
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{
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if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out doubleValue))
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{
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numberString = attributeValue;
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}
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else if (attributes.TryGetValue("channel-id", out attributeValue))
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{
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if (double.TryParse(attributeValue, NumberStyles.Any, CultureInfo.InvariantCulture, out doubleValue))
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{
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numberString = attributeValue;
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}
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}
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}
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if (String.IsNullOrWhiteSpace(numberString))
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{
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// Using this as a fallback now as this leads to Problems with channels like "5 USA"
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// where 5 isnt ment to be the channel number
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// Check for channel number with the format from SatIp
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// #EXTINF:0,84. VOX Schweiz
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// #EXTINF:0,84.0 - VOX Schweiz
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if (!string.IsNullOrWhiteSpace(nameInExtInf))
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{
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var numberIndex = nameInExtInf.IndexOf(' ');
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if (numberIndex > 0)
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{
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var numberPart = nameInExtInf.Substring(0, numberIndex).Trim(new[] { ' ', '.' });
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if (double.TryParse(numberPart, NumberStyles.Any, CultureInfo.InvariantCulture, out var number))
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{
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numberString = numberPart;
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}
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}
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}
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}
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}
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if (!IsValidChannelNumber(numberString))
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{
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numberString = null;
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}
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if (!string.IsNullOrWhiteSpace(numberString))
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{
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numberString = numberString.Trim();
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}
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else
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{
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if (string.IsNullOrWhiteSpace(mediaUrl))
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{
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numberString = null;
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}
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else
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{
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try
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{
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numberString = Path.GetFileNameWithoutExtension(mediaUrl.Split('/').Last());
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if (!IsValidChannelNumber(numberString))
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{
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numberString = null;
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}
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}
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catch
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{
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// Seeing occasional argument exception here
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numberString = null;
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}
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}
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}
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return numberString;
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}
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private static bool IsValidChannelNumber(string numberString)
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{
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if (string.IsNullOrWhiteSpace(numberString) ||
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string.Equals(numberString, "-1", StringComparison.OrdinalIgnoreCase) ||
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string.Equals(numberString, "0", StringComparison.OrdinalIgnoreCase))
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{
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return false;
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}
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if (!double.TryParse(numberString, NumberStyles.Any, CultureInfo.InvariantCulture, out var value))
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{
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return false;
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}
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return true;
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}
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private static string GetChannelName(string extInf, Dictionary<string, string> attributes)
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{
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var nameParts = extInf.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
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var nameInExtInf = nameParts.Length > 1 ? nameParts.Last().Trim() : null;
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// Check for channel number with the format from SatIp
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// #EXTINF:0,84. VOX Schweiz
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// #EXTINF:0,84.0 - VOX Schweiz
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if (!string.IsNullOrWhiteSpace(nameInExtInf))
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{
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var numberIndex = nameInExtInf.IndexOf(' ');
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if (numberIndex > 0)
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{
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var numberPart = nameInExtInf.Substring(0, numberIndex).Trim(new[] { ' ', '.' });
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if (double.TryParse(numberPart, NumberStyles.Any, CultureInfo.InvariantCulture, out var number))
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{
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//channel.Number = number.ToString();
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nameInExtInf = nameInExtInf.Substring(numberIndex + 1).Trim(new[] { ' ', '-' });
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}
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}
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}
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attributes.TryGetValue("tvg-name", out string name);
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if (string.IsNullOrWhiteSpace(name))
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{
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name = nameInExtInf;
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}
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if (string.IsNullOrWhiteSpace(name))
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{
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attributes.TryGetValue("tvg-id", out name);
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}
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if (string.IsNullOrWhiteSpace(name))
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{
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name = null;
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}
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return name;
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}
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private static Dictionary<string, string> ParseExtInf(string line, out string remaining)
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{
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var dict = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
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var reg = new Regex(@"([a-z0-9\-_]+)=\""([^""]+)\""", RegexOptions.IgnoreCase);
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var matches = reg.Matches(line);
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remaining = line;
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foreach (Match match in matches)
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{
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var key = match.Groups[1].Value;
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var value = match.Groups[2].Value;
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dict[match.Groups[1].Value] = match.Groups[2].Value;
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remaining = remaining.Replace(key + "=\"" + value + "\"", string.Empty, StringComparison.OrdinalIgnoreCase);
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}
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return dict;
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}
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}
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}
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