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71911cb1a7
* add new metadata functions to pdf engine interface * add exiftool module with relevant test cases * use exiftool to overwrite metadata in libreoffice * use exiftool to overwrite metadata in chromium * fix linter issues * fix more linter issues * more test cases for better coverage * remove utils * minor changes * remove metadata from pdfoptions * correct indentation * read/write metadata one file at a time.
73 lines
2.3 KiB
Go
73 lines
2.3 KiB
Go
package pdfcpu
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import (
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"context"
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"fmt"
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pdfcpuAPI "github.com/pdfcpu/pdfcpu/pkg/api"
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pdfcpuLog "github.com/pdfcpu/pdfcpu/pkg/log"
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pdfcpuConfig "github.com/pdfcpu/pdfcpu/pkg/pdfcpu/model"
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"go.uber.org/zap"
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"github.com/gotenberg/gotenberg/v8/pkg/gotenberg"
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)
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func init() {
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gotenberg.MustRegisterModule(new(PdfCpu))
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}
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// PdfCpu abstracts the pdfcpu library and implements the [gotenberg.PdfEngine]
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// interface.
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type PdfCpu struct {
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conf *pdfcpuConfig.Configuration
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}
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// Descriptor returns a [PdfCpu]'s module descriptor.
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func (engine *PdfCpu) Descriptor() gotenberg.ModuleDescriptor {
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return gotenberg.ModuleDescriptor{
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ID: "pdfcpu",
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New: func() gotenberg.Module { return new(PdfCpu) },
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}
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}
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// Provision sets the engine properties.
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func (engine *PdfCpu) Provision(ctx *gotenberg.Context) error {
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pdfcpuConfig.ConfigPath = "disable"
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pdfcpuLog.DisableLoggers()
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engine.conf = pdfcpuConfig.NewDefaultConfiguration()
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return nil
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}
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// Merge combines multiple PDFs into a single PDF.
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func (engine *PdfCpu) Merge(ctx context.Context, logger *zap.Logger, inputPaths []string, outputPath string) error {
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err := pdfcpuAPI.MergeCreateFile(inputPaths, outputPath, false, engine.conf)
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if err == nil {
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return nil
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}
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return fmt.Errorf("merge PDFs with PDFcpu: %w", err)
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}
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// Convert is not available in this implementation.
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func (engine *PdfCpu) Convert(ctx context.Context, logger *zap.Logger, formats gotenberg.PdfFormats, inputPath, outputPath string) error {
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return fmt.Errorf("convert PDF to '%+v' with PDFcpu: %w", formats, gotenberg.ErrPdfEngineMethodNotSupported)
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}
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// ReadMetadata is not available in this implementation.
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func (engine *PdfCpu) ReadMetadata(ctx context.Context, logger *zap.Logger, inputPaths string, metadata map[string]interface{}) error {
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return fmt.Errorf("read PDF metadata with PDFcpu: %w", gotenberg.ErrPdfEngineMethodNotSupported)
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}
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// WriteMetadata is not available in this implementation.
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func (engine *PdfCpu) WriteMetadata(ctx context.Context, logger *zap.Logger, inputPaths string, newMetadata map[string]interface{}) error {
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return fmt.Errorf("write PDF metadata with PDFcpu: %w", gotenberg.ErrPdfEngineMethodNotSupported)
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}
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// Interface guards.
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var (
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_ gotenberg.Module = (*PdfCpu)(nil)
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_ gotenberg.Provisioner = (*PdfCpu)(nil)
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_ gotenberg.PdfEngine = (*PdfCpu)(nil)
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)
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