private string GetTranslatedOutputPath(ITaskItem source, string language, HashSet <string> outputPaths)
{
string translatedFilename = source.GetMetadata(MetadataKey.XlfTranslatedFilename);
if (string.IsNullOrEmpty(translatedFilename))
{
translatedFilename = Path.GetFileNameWithoutExtension(source.ItemSpec);
source.SetMetadata(MetadataKey.XlfTranslatedFilename, translatedFilename);
}
string sourceDocumentPath = source.GetMetadataOrDefault(MetadataKey.SourceDocumentPath, source.ItemSpec);
string extension = Path.GetExtension(source.ItemSpec);
string outputPath = Path.Combine(TranslatedOutputDirectory, $"{translatedFilename}.{language}{extension}");
if (!outputPaths.Add(outputPath))
{
throw new BuildErrorException(
$"Two or more source files to be translated in the same project are named {Path.GetFileName(sourceDocumentPath)}. " +
$"Give them unique names or set unique {MetadataKey.XlfTranslatedFilename} metadata.");
}
return(outputPath);
}