fixed bugs in metadata saving

(cherry picked from commit 880b1d3d865a7820051cf3023cc58802daca28b0)

rtdata/languages/default

@@ -1789,6 +1789,11 @@ PREFERENCES_MENUGROUPLABEL;Group "Color label"
 PREFERENCES_MENUGROUPPROFILEOPERATIONS;Group "Processing profile operations"
 PREFERENCES_MENUGROUPRANK;Group "Rank"
 PREFERENCES_MENUOPTIONS;Context Menu Options
+PREFERENCES_METADATA;Metadata
+PREFERENCES_METADATA_SYNC;Metadata synchronization with XMP sidecars
+PREFERENCES_METADATA_SYNC_NONE;Off
+PREFERENCES_METADATA_SYNC_READ;Read only
+PREFERENCES_METADATA_SYNC_READWRITE;Bidirectional
 PREFERENCES_MONINTENT;Default rendering intent
 PREFERENCES_MONITOR;Monitor
 PREFERENCES_MONPROFILE;Default color profile
@@ -1864,6 +1869,9 @@ PREFERENCES_TP_LABEL;Tool panel:
 PREFERENCES_TP_VSCROLLBAR;Hide vertical scrollbar
 PREFERENCES_USEBUNDLEDPROFILES;Use bundled profiles
 PREFERENCES_WORKFLOW;Layout
+PREFERENCES_XMP_SIDECAR_MODE;XMP sidecar style
+PREFERENCES_XMP_SIDECAR_MODE_STD;Standard (FILENAME.xmp for FILENAME.ext)
+PREFERENCES_XMP_SIDECAR_MODE_EXT;Darktable-like (FILENAME.ext.xmp for FILENAME.ext)
 PREFERENCES_ZOOMONSCROLL;Zoom images by scrolling
 PROFILEPANEL_COPYPPASTE;Parameters to copy
 PROFILEPANEL_GLOBALPROFILES;Bundled profiles

rtengine/init.cc

@@ -33,6 +33,7 @@
 #include "profilestore.h"
 #include "../rtgui/threadutils.h"
 #include "rtlensfun.h"
+#include "metadata.h"
 #include "procparams.h"
 
 namespace rtengine
@@ -103,6 +104,8 @@ int init (const Settings* s, const Glib::ustring& baseDir, const Glib::ustring&
 }
 
     Color::init ();
+    Exiv2Metadata::init();
+
     delete lcmsMutex;
     lcmsMutex = new MyMutex;
     fftwMutex = new MyMutex;
@@ -111,6 +114,7 @@ int init (const Settings* s, const Glib::ustring& baseDir, const Glib::ustring&
 
 void cleanup ()
 {
+    Exiv2Metadata::cleanup();
     ProcParams::cleanup ();
     Color::cleanup ();
     RawImageSource::cleanup ();

rtengine/metadata.cc

@@ -20,6 +20,8 @@
 
 #include <stdio.h>
 #include <glib/gstdio.h>
+#include <iostream>
+
 #include "metadata.h"
 #include "settings.h"
 #include "../rtgui/version.h"
@@ -65,7 +67,7 @@ Exiv2Metadata::Exiv2Metadata():
 
 
 Exiv2Metadata::Exiv2Metadata(const Glib::ustring &path):
-    src_(""),
+    src_(path),
     merge_xmp_(settings->metadata_xmp_sync != Settings::MetadataXmpSync::NONE),
     image_(nullptr),
     exif_(new rtengine::procparams::ExifPairs),
@@ -154,20 +156,27 @@ void Exiv2Metadata::setIptc(const rtengine::procparams::IPTCPairs &iptc)
 
 void Exiv2Metadata::do_merge_xmp(Exiv2::Image *dst) const
 {
-    auto xmp = getXmpSidecar(src_);
-    Exiv2::ExifData exif;
-    Exiv2::IptcData iptc;
-    Exiv2::moveXmpToExif(xmp, exif);
-    Exiv2::moveXmpToIptc(xmp, iptc);
+    try { 
+        auto xmp = getXmpSidecar(src_);
+        Exiv2::ExifData exif;
+        Exiv2::IptcData iptc;
+        Exiv2::moveXmpToIptc(xmp, iptc);
+        Exiv2::moveXmpToExif(xmp, exif);
 
-    for (auto &datum : exif) {
-        dst->exifData()[datum.key()] = datum;
-    }
-    for (auto &datum : iptc) {
-        dst->iptcData()[datum.key()] = datum;
-    }
-    for (auto &datum : xmp) {
-        dst->xmpData()[datum.key()] = datum;
+        for (auto &datum : exif) {
+            dst->exifData()[datum.key()] = datum;
+        }
+        for (auto &datum : iptc) {
+            dst->iptcData()[datum.key()] = datum;
+        }
+        for (auto &datum : xmp) {
+            dst->xmpData()[datum.key()] = datum;
+        }
+    } catch (Exiv2::AnyError &exc) {
+        if (settings->verbose) {
+            std::cerr << "Error loading metadata from XMP sidecar: "
+                      << exc.what() << std::endl;
+        }
     }
 }
 
@@ -288,4 +297,16 @@ Exiv2::XmpData Exiv2Metadata::getXmpSidecar(const Glib::ustring &path)
     return ret;
 }
 
+
+void Exiv2Metadata::init()
+{
+    Exiv2::XmpParser::initialize();
+}
+
+
+void Exiv2Metadata::cleanup()
+{
+    Exiv2::XmpParser::terminate();
+}
+
 } // namespace rtengine

rtengine/metadata.h

@@ -57,6 +57,9 @@ public:
     static Glib::ustring xmpSidecarPath(const Glib::ustring& path);
     static Exiv2::XmpData getXmpSidecar(const Glib::ustring& path);
 
+    static void init();
+    static void cleanup();
+   
 private:
     void do_merge_xmp(Exiv2::Image* dst) const;
     void import_exif_pairs(Exiv2::ExifData& out) const;