private void TransformPptxStream(Stream stream, OptimizeDiagnostic diagnostic, ImageOptimizerOptions options, CancellationToken token)
{
using var document = OpenXmlFactory.OpenPowerPoint(stream, true, options.OpenXmlUriAutoRecovery);
var transformation = new OptimizerPowerPoint(_memoryStreamManager, options);
transformation.Transform(document, diagnostic, token);
foreach (var slide in document.PresentationPart.SlideParts)
{
foreach (var part in slide.EmbeddedPackageParts)
{
token.ThrowIfCancellationRequested();
TransformEmbeddedPart(part, diagnostic, options, token);
}
}
}
private void TransformEmbeddedPart(EmbeddedPackagePart part, OptimizeDiagnostic diagnostic, ImageOptimizerOptions options, CancellationToken token)
{
// Read mode about office mime types: http://filext.com/faq/office_mime_types.php
var fileType = part.ContentType
switch
{
"application/vnd.openxmlformats-officedocument.wordprocessingml.document" => ".docx",
"application/vnd.openxmlformats-officedocument.presentationml.presentation" => ".pptx",
_ => null
};
if (fileType is null)
{
var message = $"Unsupported embedding type {part.ContentType}";
diagnostic.Errors.Add(new OptimizeError(part.Uri.OriginalString, message));
return;
}
using var result = Transform(fileType, part.GetStream(), out var partDiagnostic, options, token);
result.Position = 0;
part.FeedData(result);
foreach (var error in partDiagnostic.Errors)
{
var pointer = part.Uri.OriginalString + '|' + error.Pointer;
diagnostic.Errors.Add(new OptimizeError(pointer, error.Message));
}
}
private void TransformDocxStream(Stream stream, OptimizeDiagnostic diagnostic, ImageOptimizerOptions options, CancellationToken token)
{
using var document = OpenXmlFactory.OpenWord(stream, true, options.OpenXmlUriAutoRecovery);
var transformation = new OptimizerWord(_memoryStreamManager, options);
transformation.Transform(document, diagnostic, token);
foreach (var part in document.MainDocumentPart.EmbeddedPackageParts)
{
token.ThrowIfCancellationRequested();
TransformEmbeddedPart(part, diagnostic, options, token);
}
}