v3.0.0 (#18)

internal/pkg/printer/office.go

@@ -0,0 +1,62 @@
+package printer
+
+import (
+	"context"
+	"errors"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"sync"
+
+	"github.com/thecodingmachine/gotenberg/internal/pkg/rand"
+)
+
+var mu sync.Mutex
+
+// Office facilitates Office documents to PDF conversion.
+type Office struct {
+	Context   context.Context
+	FilePaths []string
+}
+
+// Print converts Office documents to PDF.
+func (o *Office) Print(destination string) error {
+	mu.Lock()
+	defer mu.Unlock()
+	fpaths := make([]string, len(o.FilePaths))
+	dirPath := filepath.Dir(destination)
+	for i, fpath := range o.FilePaths {
+		baseFilename, err := rand.Get()
+		if err != nil {
+			return err
+		}
+		tmpDest := fmt.Sprintf("%s/%s.pdf", dirPath, baseFilename)
+		cmd := exec.CommandContext(
+			o.Context,
+			"unoconv",
+			"--format",
+			"pdf",
+			"--output",
+			tmpDest,
+			fpath,
+		)
+		_, err = cmd.Output()
+		if o.Context.Err() == context.DeadlineExceeded {
+			return errors.New("unoconv: command timed out")
+		}
+		if err != nil {
+			return fmt.Errorf("unoconv: non-zero exit code: %v", err)
+		}
+		fpaths[i] = tmpDest
+	}
+	if len(fpaths) == 1 {
+		return os.Rename(fpaths[0], destination)
+	}
+	return Merge(fpaths, destination)
+}
+
+// Compile-time checks to ensure type implements desired interfaces.
+var (
+	_ = Printer(new(Office))
+)