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feat(pdfengines): add support for flattening annotations (#1105)

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* initial changes

* Add tests

* Fix edge case when we need to regenerate appearances

* Fix comments

* Add missing comment

* Add missing comment

* Add missing comment

* Add flatten option to the merge route

* Add flatten option to the libreoffice convert route

* Add flatten option to the chromium convert route

* Revert "Add flatten option to the chromium convert route"

This reverts commit cdab8b4e6b.

* Ignore lint false positives

* Add missing tests

* Add flatten route tests

* Replace input instead of creating a new file

* create copy before flatten in tests

---------

Co-authored-by: Peter Chakalov <peter.chakalov@abraxa.com>
This commit is contained in:
Peter Chakalov
2025-01-28 15:38:27 +02:00
committed by GitHub
parent a9b44ee39e
commit b418f1eb05
23 changed files with 634 additions and 4 deletions
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12
pkg/modules/pdfengines/pdfengines.go
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@@ -29,6 +29,7 @@ func init() {
type PdfEngines struct {
mergeNames []string
splitNames []string
flattenNames []string
convertNames []string
readMetadataNames []string
writeMetadataNames []string
@@ -44,6 +45,7 @@ func (mod *PdfEngines) Descriptor() gotenberg.ModuleDescriptor {
fs := flag.NewFlagSet("pdfengines", flag.ExitOnError)
fs.StringSlice("pdfengines-merge-engines", []string{"qpdf", "pdfcpu", "pdftk"}, "Set the PDF engines and their order for the merge feature - empty means all")
fs.StringSlice("pdfengines-split-engines", []string{"pdfcpu", "qpdf", "pdftk"}, "Set the PDF engines and their order for the split feature - empty means all")
fs.StringSlice("pdfengines-flatten-engines", []string{"qpdf"}, "Set the PDF engines and their order for the flatten feature - empty means all")
fs.StringSlice("pdfengines-convert-engines", []string{"libreoffice-pdfengine"}, "Set the PDF engines and their order for the convert feature - empty means all")
fs.StringSlice("pdfengines-read-metadata-engines", []string{"exiftool"}, "Set the PDF engines and their order for the read metadata feature - empty means all")
fs.StringSlice("pdfengines-write-metadata-engines", []string{"exiftool"}, "Set the PDF engines and their order for the write metadata feature - empty means all")
@@ -67,6 +69,7 @@ func (mod *PdfEngines) Provision(ctx *gotenberg.Context) error {
flags := ctx.ParsedFlags()
mergeNames := flags.MustStringSlice("pdfengines-merge-engines")
splitNames := flags.MustStringSlice("pdfengines-split-engines")
flattenNames := flags.MustStringSlice("pdfengines-flatten-engines")
convertNames := flags.MustStringSlice("pdfengines-convert-engines")
readMetadataNames := flags.MustStringSlice("pdfengines-read-metadata-engines")
writeMetadataNames := flags.MustStringSlice("pdfengines-write-metadata-engines")
@@ -106,6 +109,11 @@ func (mod *PdfEngines) Provision(ctx *gotenberg.Context) error {
mod.splitNames = splitNames
}
mod.flattenNames = defaultNames
if len(flattenNames) > 0 {
mod.flattenNames = flattenNames
}
mod.convertNames = defaultNames
if len(convertNames) > 0 {
mod.convertNames = convertNames
@@ -170,6 +178,7 @@ func (mod *PdfEngines) Validate() error {
findNonExistingEngines(mod.mergeNames)
findNonExistingEngines(mod.splitNames)
findNonExistingEngines(mod.flattenNames)
findNonExistingEngines(mod.convertNames)
findNonExistingEngines(mod.readMetadataNames)
findNonExistingEngines(mod.writeMetadataNames)
@@ -187,6 +196,7 @@ func (mod *PdfEngines) SystemMessages() []string {
return []string{
fmt.Sprintf("merge engines - %s", strings.Join(mod.mergeNames[:], " ")),
fmt.Sprintf("split engines - %s", strings.Join(mod.splitNames[:], " ")),
fmt.Sprintf("flatten engines - %s", strings.Join(mod.flattenNames[:], " ")),
fmt.Sprintf("convert engines - %s", strings.Join(mod.convertNames[:], " ")),
fmt.Sprintf("read metadata engines - %s", strings.Join(mod.readMetadataNames[:], " ")),
fmt.Sprintf("write metadata engines - %s", strings.Join(mod.writeMetadataNames[:], " ")),
@@ -212,6 +222,7 @@ func (mod *PdfEngines) PdfEngine() (gotenberg.PdfEngine, error) {
return newMultiPdfEngines(
engines(mod.mergeNames),
engines(mod.splitNames),
engines(mod.flattenNames),
engines(mod.convertNames),
engines(mod.readMetadataNames),
engines(mod.writeMetadataNames),
@@ -234,6 +245,7 @@ func (mod *PdfEngines) Routes() ([]api.Route, error) {
return []api.Route{
mergeRoute(engine),
splitRoute(engine),
flattenRoute(engine),
convertRoute(engine),
readMetadataRoute(engine),
writeMetadataRoute(engine),