create xmp sidecar when needed

diff --git a/src/exiv2.cc b/src/exiv2.cc
index 3a7d9d9..07b5afa 100644 (file)
--- a/src/exiv2.cc
+++ b/src/exiv2.cc
@@ -50,6 +50,7 @@
 
 #if EXIV2_TEST_VERSION(0,17,0)
 #include <exiv2/convert.hpp>
+#include <exiv2/xmpsidecar.hpp>
 #endif
 
 
@@ -111,6 +112,12 @@ protected:
        guint cp_length_;
 
 public:
+       _ExifDataOriginal(Exiv2::Image::AutoPtr image)
+       {
+               cp_data_ = NULL;
+               cp_length_ = 0;
+               image_ = image;
+       }
 
        _ExifDataOriginal(gchar *path)
        {
@@ -252,10 +259,29 @@ public:
                        }
                else
                        {
-                       imageData_->image()->setExifData(exifData_);
-                       imageData_->image()->setIptcData(iptcData_);
-                       imageData_->image()->setXmpData(xmpData_);
-                       imageData_->image()->writeMetadata();
+                       try     {
+                               imageData_->image()->setExifData(exifData_);
+                               imageData_->image()->setIptcData(iptcData_);
+                               imageData_->image()->setXmpData(xmpData_);
+                               imageData_->image()->writeMetadata();
+                               } 
+                       catch (Exiv2::AnyError& e) 
+                               {
+                               // can't write into the image, create sidecar
+#if EXIV2_TEST_VERSION(0,17,0)
+                               gchar *base = remove_extension_from_path(imageData_->image()->io().path().c_str());
+                               gchar *pathl = g_strconcat(base, ".xmp", NULL);
+
+                               Exiv2::Image::AutoPtr sidecar = Exiv2::ImageFactory::create(Exiv2::ImageType::xmp, pathl);
+                               
+                               g_free(base);
+                               g_free(pathl);
+                               
+                               sidecarData_ = new _ExifDataOriginal(sidecar);
+                               sidecarData_->image()->setXmpData(xmpData_);
+                               sidecarData_->image()->writeMetadata();
+#endif
+                               }
                        }
        }