Support for adding copyright

1 files changed, 18 insertions, 6 deletions

diff --git a/jpeg-utils.cpp b/jpeg-utils.cpp
index cb06abc..c884ef4 100644
--- a/jpeg-utils.cpp
+++ b/jpeg-utils.cpp
@@ -377,11 +377,17 @@ calculate_sizes (const unsigned long max_width, const unsigned long max_height,
 
 
 /*
- *   strip_thumbnail: strip thumbnail stored in EXIF table
+ *   modify_exif: - strip thumbnail stored in EXIF table
+ *                - add copyright to Exif::Image::Copyright and Iptc::Application2::Copyright
  */
 void
-strip_thumbnail (const char *filename)
+modify_exif (const char *filename, gboolean strip_thumbnail, const char *add_copyright)
 {
+  bool was_modified = false;
+
+  if ((! strip_thumbnail) && (add_copyright == NULL))
+    return;
+
   try
   {
      Exiv2::Image::AutoPtr image = Exiv2::ImageFactory::open(filename);
@@ -389,17 +395,23 @@ strip_thumbnail (const char *filename)
 
      image->readMetadata();
      Exiv2::ExifData &exifData = image->exifData();
-     if (! exifData.empty())  {
+     if (add_copyright) {
+       exifData["Exif.Image.Copyright"] = add_copyright;
+       image->iptcData()["Iptc.Application2.Copyright"] = add_copyright;
+       was_modified = true;
+     }
+     if (strip_thumbnail && (! exifData.empty()))  {
        std::string thumbExt = exifData.thumbnailExtension();
        if (! thumbExt.empty()) {
          exifData.eraseThumbnail();
-         image->writeMetadata();
+         was_modified = true;
        }
      }
+     if (was_modified)
+       image->writeMetadata();
   }
   catch (Exiv2::AnyError& e)
   {
-    fprintf (stderr, "strip_thumbnail: Caught Exiv2 exception: '%s'\n", e.what());
+    fprintf (stderr, "modify_exif: Caught Exiv2 exception: '%s'\n", e.what());
   }
 }
-