Create save_json.go

save_json.go

@@ -0,0 +1,40 @@
+package openapi
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+
+	_json "github.com/MarkRosemaker/openapi/internal/json"
+	"github.com/go-json-experiment/json"
+)
+
+func (d Document) WriteJSON(w io.Writer) error {
+	return json.MarshalWrite(w, d, _json.Options)
+}
+
+func (d *Document) ToJSON() ([]byte, error) {
+	return json.Marshal(d, _json.Options)
+}
+
+func (d *Document) WriteToFile(path string) error {
+	switch filepath.Ext(path) {
+	case ".json": // ok
+	default:
+		return fmt.Errorf("unsupported file extension: %s", filepath.Ext(path))
+	}
+
+	// create the underlying directories if they don't exist
+	if err := os.MkdirAll(filepath.Dir(path), 0o755); err != nil {
+		return err
+	}
+
+	f, err := os.Create(path)
+	if err != nil {
+		return err
+	}
+	defer f.Close()
+
+	return d.WriteJSON(f)
+}