public static TwitchPlaylist Parse(string tempDir, string playlistStr, string urlPrefix)
{
TwitchPlaylist playlist = new TwitchPlaylist();
List <string> lines = playlistStr.Split(new string[] { "\n" }, StringSplitOptions.RemoveEmptyEntries).ToList();
for (int i = 0; i < lines.Count; i++)
{
string line = lines[i];
if (line.StartsWith("#EXT-X-VERSION", StringComparison.OrdinalIgnoreCase))
{
int version = int.Parse(line.Substring(line.LastIndexOf(":") + 1).TrimEnd(), NumberStyles.Integer, CultureInfo.InvariantCulture);
if (version == 4)
{
return(ParseV4(tempDir, lines, urlPrefix));
}
else
{
return(ParseV3(tempDir, lines, urlPrefix));
}
}
}
return(playlist);
}
private static TwitchPlaylist ParseV4(string tempDir, List <string> lines, string urlPrefix)
{
TwitchPlaylist playlist = new TwitchPlaylist();
int partCounter = 0;
double lengthBuffer = 0;
string currentPartStr = null;
for (int i = 0; i < lines.Count; i++)
{
string line = lines[i];
if (line.StartsWith("#EXTINF", StringComparison.OrdinalIgnoreCase))
{
string partStr = lines[i + 2];
if (string.IsNullOrWhiteSpace(currentPartStr))
{
currentPartStr = partStr;
}
if (!currentPartStr.Equals(partStr))
{
playlist.Add(new TwitchPlaylistPart(lengthBuffer, urlPrefix + currentPartStr, Path.Combine(tempDir, partCounter.ToString("D8") + ".ts")));
currentPartStr = partStr;
lengthBuffer = 0;
partCounter++;
}
lengthBuffer += Math.Max(double.Parse(line.Substring(line.LastIndexOf(":") + 1).TrimEnd(','), NumberStyles.Any, CultureInfo.InvariantCulture), 0);
i++;
}
}
if (!string.IsNullOrWhiteSpace(currentPartStr) && lengthBuffer > 0)
{
playlist.Add(new TwitchPlaylistPart(lengthBuffer, urlPrefix + currentPartStr, Path.Combine(tempDir, partCounter.ToString("D8") + ".ts")));
}
return(playlist);
}
private static TwitchPlaylist ParseV3(string tempDir, List <string> lines, string urlPrefix)
{
TwitchPlaylist playlist = new TwitchPlaylist();
int partCounter = 0;
for (int i = 0; i < lines.Count; i++)
{
string line = lines[i];
if (line.StartsWith("#EXTINF", StringComparison.OrdinalIgnoreCase))
{
double length = Math.Max(double.Parse(line.Substring(line.LastIndexOf(":") + 1).TrimEnd(','), NumberStyles.Any, CultureInfo.InvariantCulture), 0);
playlist.Add(new TwitchPlaylistPart(length, urlPrefix + lines[i + 1], Path.Combine(tempDir, partCounter.ToString("D8") + ".ts")));
partCounter++;
i++;
}
}
return(playlist);
}