// Parse one Subtitle from an SBV file.
// Returns null if there is no subtitle to read.
public static SBVSubtitle ParseSingle(TextReader reader)
{
// Read the next non-empty line as a timestamp
string timestampLine;
do
{
timestampLine = reader.ReadLine();
if (timestampLine == null)
{
return(null);
}
} while(string.IsNullOrWhiteSpace(timestampLine));
// Parse the timestamp
var parts = timestampLine.Split(',');
if (parts.Length != 2)
{
throw new FormatException("Invalid timestamp.");
}
TimeSpan start, end;
if (!ParseTimestamp(parts[0], out start))
{
throw new FormatException($"Invalid timestamp '{parts[0]}'.");
}
if (!ParseTimestamp(parts[1], out end))
{
throw new FormatException($"Invalid timestamp '{parts[1]}'.");
}
var subtitle = new SBVSubtitle();
subtitle.Start = start;
subtitle.End = end;
// Collect the content
var contentBuilder = new StringBuilder();
for (;;)
{
var line = reader.ReadLine();
if (string.IsNullOrWhiteSpace(line))
{
break;
}
contentBuilder.AppendLine(line);
}
subtitle.Content = contentBuilder.ToString();
return(subtitle);
}
static async Task Main(string[] args)
{
// Read settings
var options = new Options(args);
var error = options.Errors();
if (error != null)
{
Console.WriteLine(error);
return;
}
// Translate subtitles
using (var inputStream = File.OpenRead(options.InputFile))
using (var inputReader = new StreamReader(inputStream))
using (var outputStream = options.OutputFile != null ? File.OpenWrite(options.OutputFile) : null)
using (var outputWriter = outputStream != null ? new StreamWriter(outputStream) : null)
using (var translator = new TranslationService(
options.TranslateId,
options.TranslateSecret,
options.TranslateEndpoint)){
foreach (var subtitle in SBVSubtitle.Parse(inputReader))
{
subtitle.Content = await translator.Translate(subtitle.Content, options.InputLanguage, options.OutputLanguage);
if (outputWriter != null)
{
outputWriter.WriteLine(subtitle);
}
else
{
Console.WriteLine(subtitle);
}
}
}
}