Avoid naked new operator in sample apps

samples/addmoddel.cpp

@@ -57,7 +57,7 @@ try {
     std::cout << "Added a few tags the quick way.\n";
 
     // Create a ASCII string value (note the use of create)
-    Exiv2::Value::UniquePtr v = Exiv2::Value::create(Exiv2::asciiString);
+    auto v = Exiv2::Value::create(Exiv2::asciiString);
     // Set the value to a string
     v->read("1999:12:31 23:59:59");
     // Add the value together with its key to the Exif data container
@@ -66,16 +66,16 @@ try {
     std::cout << "Added key \"" << key << "\", value \"" << *v << "\"\n";
 
     // Now create a more interesting value (without using the create method)
-    Exiv2::URationalValue::UniquePtr rv(new Exiv2::URationalValue);
+    Exiv2::URationalValue rv;
     // Set two rational components from a string
-    rv->read("1/2 1/3");
+    rv.read("1/2 1/3");
     // Add more elements through the extended interface of rational value
-    rv->value_.emplace_back(2, 3);
-    rv->value_.emplace_back(3, 4);
+    rv.value_.emplace_back(2, 3);
+    rv.value_.emplace_back(3, 4);
     // Add the key and value pair to the Exif data
     key = Exiv2::ExifKey("Exif.Image.PrimaryChromaticities");
-    exifData.add(key, rv.get());
-    std::cout << "Added key \"" << key << "\", value \"" << *rv << "\"\n";
+    exifData.add(key, &rv);
+    std::cout << "Added key \"" << key << "\", value \"" << rv << "\"\n";
 
     // *************************************************************************
     // Modify Exif data
@@ -92,18 +92,21 @@ try {
     // Alternatively, we can use findKey()
     key = Exiv2::ExifKey("Exif.Image.PrimaryChromaticities");
     auto pos = exifData.findKey(key);
-    if (pos == exifData.end()) throw Exiv2::Error(Exiv2::kerErrorMessage, "Key not found");
+    if (pos == exifData.end())
+        throw Exiv2::Error(Exiv2::kerErrorMessage, "Key not found");
+
     // Get a pointer to a copy of the value
     v = pos->getValue();
     // Downcast the Value pointer to its actual type
     auto prv = dynamic_cast<Exiv2::URationalValue*>(v.release());
     if (prv == nullptr)
         throw Exiv2::Error(Exiv2::kerErrorMessage, "Downcast failed");
-    rv = Exiv2::URationalValue::UniquePtr(prv);
+
+    rv = Exiv2::URationalValue(*prv);
     // Modify the value directly through the interface of URationalValue
-    rv->value_.at(2) = {88, 77};
+    rv.value_.at(2) = {88, 77};
     // Copy the modified value back to the metadatum
-    pos->setValue(rv.get());
+    pos->setValue(&rv);
     std::cout << "Modified key \"" << key
               << "\", new value \"" << pos->value() << "\"\n";
 

samples/iotest.cpp

@@ -65,8 +65,10 @@ int main(int argc, char* const argv[])
         if ( argc >= 5 ) {
             int blocksize = argc==6 ? atoi(ba) : 10000;
             // ensure blocksize is sane
-            if (blocksize>1024*1024) blocksize=10000;
-            Exiv2::byte* bytes = blocksize > 0 ? new Exiv2::byte[blocksize] : nullptr;
+            if (blocksize>1024*1024)
+                blocksize=10000;
+
+            std::vector<Exiv2::byte> bytes (blocksize);
 
             // copy fileIn from a remote location.
             BasicIo::UniquePtr io = Exiv2::ImageFactory::createIo(fr);
@@ -78,11 +80,11 @@ int main(int argc, char* const argv[])
                 Error(Exiv2::kerFileOpenFailed, output.path() , "w+b", strError());
             }
             size_t    l = 0;
-            if ( bytes ) {
+            if ( !bytes.empty() ) {
                 int r ;
-                while ( (r=io->read(bytes,blocksize)) > 0  ) {
+                while ( (r=io->read(bytes.data(),blocksize)) > 0  ) {
                     l += r;
-                    output.write(bytes,r) ;
+                    output.write(bytes.data(),r) ;
                 }
             } else {
                 // read/write byte-wise (#1029)
@@ -90,7 +92,6 @@ int main(int argc, char* const argv[])
                     output.putb(io->getb()) ;
                 }
             }
-            delete[] bytes;
             output.close();
         }
 

samples/metacopy.cpp

@@ -49,9 +49,9 @@ try {
     }
 
     // Use MemIo to increase test coverage.
-    Exiv2::BasicIo::UniquePtr fileIo(new Exiv2::FileIo(params.read_));
-    Exiv2::BasicIo::UniquePtr memIo(new Exiv2::MemIo);
-    memIo->transfer(*fileIo);
+    Exiv2::FileIo fileIo(params.read_);
+    auto memIo = std::make_unique<Exiv2::MemIo>();
+    memIo->transfer(fileIo);
 
     Exiv2::Image::UniquePtr readImg = Exiv2::ImageFactory::open(std::move(memIo));
     assert(readImg.get() != 0);

samples/tiff-test.cpp

@@ -91,7 +91,7 @@ void mini1(const char* path)
 
 void mini9(const char* path)
 {
-    TiffImage tiffImage(BasicIo::UniquePtr(new FileIo(path)), false);
+    TiffImage tiffImage(std::make_unique<FileIo>(path), false);
     tiffImage.readMetadata();
 
     std::cout << "MIME type:  " << tiffImage.mimeType() << "\n";