Added reg command to utility, fixed set command to wrok better with XMP arrays, modified LangAlt write method to write default first, fixed registerNs bug.

src/actions.cpp

@@ -1268,8 +1268,11 @@ namespace Action {
             case del:
                 delMetadatum(pImage, *i);
                 break;
+            case reg:
+                regNamespace(*i);
+                break;
             case invalidCmdId:
-                // Todo: complain
+                assert(invalidCmdId == i->cmdId_);
                 break;
             }
         }
@@ -1342,7 +1345,9 @@ namespace Action {
         if (metadatum) {
             value = metadatum->getValue();
         }
-        if (modifyCmd.explicitType_ || value.get() == 0) {
+        if (   value.get() == 0
+            || (   modifyCmd.explicitType_
+                && modifyCmd.typeId_ != value->typeId())) {
             value = Exiv2::Value::create(modifyCmd.typeId_);
         }
         if (0 == value->read(modifyCmd.value_)) {
@@ -1402,6 +1407,15 @@ namespace Action {
         }
     }
 
+    void Modify::regNamespace(const ModifyCmd& modifyCmd)
+    {
+        if (Params::instance().verbose_) {
+            std::cout << _("Reg ") << modifyCmd.key_ << "=\"" 
+                      << modifyCmd.value_ << "\"" << std::endl;
+        }
+        Exiv2::XmpProperties::registerNs(modifyCmd.value_, modifyCmd.key_);
+    }
+
     Modify::AutoPtr Modify::clone() const
     {
         return AutoPtr(clone_());

src/actions.hpp

@@ -339,6 +339,8 @@ namespace Action {
         //! Delete a metadatum from \em pImage according to \em modifyCmd
         static void delMetadatum(Exiv2::Image* pImage,
                                  const ModifyCmd& modifyCmd);
+        //! Register an XMP namespace according to \em modifyCmd
+        static void regNamespace(const ModifyCmd& modifyCmd);
 
     }; // class Modify
 

src/exiv2.cpp

@@ -60,6 +60,7 @@ namespace {
         { add, "add" },
         { set, "set" },
         { del, "del" },
+        { reg, "reg" },
         { invalidCmdId, "invalidCmd" }          // End of list marker
     };
 
@@ -886,35 +887,36 @@ namespace {
         Exiv2::TypeId defaultType = Exiv2::invalidTypeId;
         std::string key(line.substr(keyStart, keyEnd-keyStart));
         MetadataId metadataId = invalidMetadataId;
-        try {
-            Exiv2::IptcKey iptcKey(key);
-            metadataId = iptc;
-            defaultType = Exiv2::IptcDataSets::dataSetType(iptcKey.tag(),
-                                                           iptcKey.record());
-        }
-        catch (const Exiv2::AnyError&) {}
-        if (metadataId == invalidMetadataId) {
+        if (cmdId != reg) {
             try {
-                Exiv2::ExifKey exifKey(key);
-                metadataId = exif;
-                defaultType = Exiv2::ExifTags::tagType(exifKey.tag(),
-                                                       exifKey.ifdId());
+                Exiv2::IptcKey iptcKey(key);
+                metadataId = iptc;
+                defaultType = Exiv2::IptcDataSets::dataSetType(iptcKey.tag(),
+                                                               iptcKey.record());
             }
             catch (const Exiv2::AnyError&) {}
-        }
-        if (metadataId == invalidMetadataId) {
-            try {
-                Exiv2::XmpKey xmpKey(key);
-                metadataId = xmp;
-                defaultType = Exiv2::XmpProperties::propertyType(xmpKey);
+            if (metadataId == invalidMetadataId) {
+                try {
+                    Exiv2::ExifKey exifKey(key);
+                    metadataId = exif;
+                    defaultType = Exiv2::ExifTags::tagType(exifKey.tag(),
+                                                           exifKey.ifdId());
+                }
+                catch (const Exiv2::AnyError&) {}
+            }
+            if (metadataId == invalidMetadataId) {
+                try {
+                    Exiv2::XmpKey xmpKey(key);
+                    metadataId = xmp;
+                    defaultType = Exiv2::XmpProperties::propertyType(xmpKey);
+                }
+                catch (const Exiv2::AnyError&) {}
+            }
+            if (metadataId == invalidMetadataId) {
+                throw Exiv2::Error(1, Exiv2::toString(num)
+                                   + ": " + _("Invalid key") + " `" + key + "'");
             }
-            catch (const Exiv2::AnyError&) {}
-        }
-        if (metadataId == invalidMetadataId) {
-            throw Exiv2::Error(1, Exiv2::toString(num)
-                               + ": " + _("Invalid key") + " `" + key + "'");
         }
-
         std::string value;
         Exiv2::TypeId type = defaultType;
         bool explicitType = false;
@@ -934,7 +936,7 @@ namespace {
                                    + ": " + _("Invalid command line") + " " );
             }
 
-            if (typeEnd != std::string::npos) {
+            if (cmdId != reg && typeEnd != std::string::npos) {
                 std::string typeStr(line.substr(typeStart, typeEnd-typeStart));
                 Exiv2::TypeId tmpType = Exiv2::TypeInfo::typeId(typeStr);
                 if (tmpType != Exiv2::invalidTypeId) {

src/exiv2.hpp

@@ -43,7 +43,7 @@
 // class definitions
 
 //! Command identifiers
-enum CmdId { invalidCmdId, add, set, del };
+enum CmdId { invalidCmdId, add, set, del, reg };
 //! Metadata identifiers
 enum MetadataId { invalidMetadataId, iptc, exif, xmp };
 //! Structure for one parsed modification command

src/value.cpp

@@ -637,11 +637,18 @@ namespace Exiv2 {
 
     std::ostream& LangAltValue::write(std::ostream& os) const
     {
-        for (ValueType::const_iterator i = value_.begin();
-             i != value_.end(); ++i) {
-            if (i != value_.begin()) os << ", ";
-            os << "lang=\"" << i->first << "\" "
-               << i->second;
+        bool first = true;
+        // Write the default entry first
+        ValueType::const_iterator i = value_.find("x-default");
+        if (i != value_.end()) {
+            os << "lang=\"" << i->first << "\" " << i->second;
+            first = false;
+        }
+        for (i = value_.begin(); i != value_.end(); ++i) {
+            if (i->first == "x-default") continue;
+            if (!first) os << ", ";
+            os << "lang=\"" << i->first << "\" " << i->second;
+            first = false;
         }
         return os;
     }

src/xmp.cpp

@@ -381,7 +381,7 @@ namespace Exiv2 {
 
     bool XmpParser::registerNs(const std::string& ns, 
                                const std::string& prefix)
-    {
+    { try {
         initialize();
 #ifdef EXV_HAVE_XMP_TOOLKIT
         return SXMPMeta::RegisterNamespace(ns.c_str(), prefix.c_str(), 0);
@@ -389,6 +389,9 @@ namespace Exiv2 {
         return true;
 #endif
     }
+    catch (const XMP_Error& e) {
+        throw Error(40, e.GetID(), e.GetErrMsg());
+    }} // XmpParser::registerNs
 
 #ifdef EXV_HAVE_XMP_TOOLKIT
     int XmpParser::decode(      XmpData&     xmpData,