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fix(pdfengines): better workflow when applying PDF/A or PDF/UA compliance

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This commit is contained in:
Julien Neuhart
2026-03-18 15:24:31 +01:00
parent 7fb4c89832
commit 21e300fcec
11 changed files with 252 additions and 112 deletions
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60
pkg/modules/libreoffice/routes.go
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@@ -195,6 +195,14 @@ func convertRoute(libreOffice libreofficeapi.Uno, engine gotenberg.PdfEngine) ap
stamp.Expression = stampFiles[0]
}
err = pdfengines.ValidatePdfFormatsCompat(pdfFormats, userPassword, embedPaths)
if err != nil {
return err
}
hasPostProcessing := watermark.Source != "" || stamp.Source != "" ||
len(embedPaths) > 0 || len(metadata) > 0 || flatten
outputPaths := make([]string, len(inputPaths))
for i, inputPath := range inputPaths {
outputPaths[i] = ctx.GeneratePath(".pdf")
@@ -230,9 +238,10 @@ func convertRoute(libreOffice libreofficeapi.Uno, engine gotenberg.PdfEngine) ap
NativeTiledWatermarkText: nativeTiledWatermarkText,
}
if nativePdfFormats && splitMode == zeroValuedSplitMode {
if nativePdfFormats && splitMode == zeroValuedSplitMode && !hasPostProcessing {
// Only natively apply given PDF formats if we're not
// splitting the PDF later.
// splitting the PDF later and no post-processing features
// are enabled (as they would degrade compliance).
options.PdfFormats = pdfFormats
}
@@ -298,7 +307,27 @@ func convertRoute(libreOffice libreofficeapi.Uno, engine gotenberg.PdfEngine) ap
}
}
if !nativePdfFormats || (nativePdfFormats && splitMode != zeroValuedSplitMode) {
err = pdfengines.WatermarkStub(ctx, engine, watermark, outputPaths)
if err != nil {
return fmt.Errorf("watermark PDFs: %w", err)
}
err = pdfengines.StampStub(ctx, engine, stamp, outputPaths)
if err != nil {
return fmt.Errorf("stamp PDFs: %w", err)
}
if flatten {
err = pdfengines.FlattenStub(ctx, engine, outputPaths)
if err != nil {
return fmt.Errorf("flatten PDFs: %w", err)
}
}
needsConvertStub := !nativePdfFormats ||
(nativePdfFormats && splitMode != zeroValuedSplitMode) ||
(nativePdfFormats && hasPostProcessing)
if needsConvertStub {
convertOutputPaths, err := pdfengines.ConvertStub(ctx, engine, pdfFormats, outputPaths)
if err != nil {
return fmt.Errorf("convert PDFs: %w", err)
@@ -318,31 +347,16 @@ func convertRoute(libreOffice libreofficeapi.Uno, engine gotenberg.PdfEngine) ap
}
}
err = pdfengines.WatermarkStub(ctx, engine, watermark, outputPaths)
if err != nil {
return fmt.Errorf("watermark PDFs: %w", err)
}
err = pdfengines.StampStub(ctx, engine, stamp, outputPaths)
if err != nil {
return fmt.Errorf("stamp PDFs: %w", err)
}
err = pdfengines.EmbedFilesStub(ctx, engine, embedPaths, outputPaths)
if err != nil {
return fmt.Errorf("embed files into PDFs: %w", err)
}
// Metadata, embeds are written after Convert, as LibreOffice
// strips them during PDF/A conversion.
err = pdfengines.WriteMetadataStub(ctx, engine, metadata, outputPaths)
if err != nil {
return fmt.Errorf("write metadata: %w", err)
}
if flatten {
err = pdfengines.FlattenStub(ctx, engine, outputPaths)
if err != nil {
return fmt.Errorf("flatten PDFs: %w", err)
}
err = pdfengines.EmbedFilesStub(ctx, engine, embedPaths, outputPaths)
if err != nil {
return fmt.Errorf("embed files into PDFs: %w", err)
}
err = pdfengines.EncryptPdfStub(ctx, engine, userPassword, ownerPassword, outputPaths)