replace pointer with reference

This is never null.

Signed-off-by: Rosen Penev <rosenp@gmail.com>

Author: neheb

src/cr2header_int.cpp

@@ -56,7 +56,7 @@ DataBuf Cr2Header::write() const {
   return buf;
 }  // Cr2Header::write
 
-bool Cr2Header::isImageTag(uint16_t tag, IfdId group, const PrimaryGroups* /*pPrimaryGroups*/) const {
+bool Cr2Header::isImageTag(uint16_t tag, IfdId group, const PrimaryGroups& /*pPrimaryGroups*/) const {
   // CR2 image tags are all IFD2 and IFD3 tags
   if (group == IfdId::ifd2Id || group == IfdId::ifd3Id)
     return true;

src/cr2header_int.hpp

@@ -37,7 +37,7 @@ class Cr2Header : public TiffHeaderBase {
   //! @name Accessors
   //@{
   [[nodiscard]] DataBuf write() const override;
-  bool isImageTag(uint16_t tag, IfdId group, const PrimaryGroups* pPrimaryGroups) const override;
+  bool isImageTag(uint16_t tag, IfdId group, const PrimaryGroups& pPrimaryGroups) const override;
   //@}
 
   //! Return the address of offset2 from the start of the header

src/tiffimage_int.cpp

@@ -2061,7 +2061,7 @@ WriteMethod TiffParserWorker::encode(BasicIo& io, const byte* pData, size_t size
   auto primaryGroups = findPrimaryGroups(parsedTree);
   if (parsedTree) {
     // Attempt to update existing TIFF components based on metadata entries
-    TiffEncoder encoder(exifData, iptcData, xmpData, parsedTree.get(), false, &primaryGroups, pHeader, findEncoderFct);
+    TiffEncoder encoder(exifData, iptcData, xmpData, parsedTree.get(), false, primaryGroups, pHeader, findEncoderFct);
     parsedTree->accept(encoder);
     if (!encoder.dirty())
       writeMethod = wmNonIntrusive;
@@ -2070,11 +2070,11 @@ WriteMethod TiffParserWorker::encode(BasicIo& io, const byte* pData, size_t size
     auto createdTree = TiffCreator::create(root, IfdId::ifdIdNotSet);
     if (parsedTree) {
       // Copy image tags from the original image to the composite
-      TiffCopier copier(createdTree.get(), root, pHeader, &primaryGroups);
+      TiffCopier copier(createdTree.get(), root, pHeader, primaryGroups);
       parsedTree->accept(copier);
     }
     // Add entries from metadata to composite
-    TiffEncoder encoder(exifData, iptcData, xmpData, createdTree.get(), !parsedTree, &primaryGroups, pHeader,
+    TiffEncoder encoder(exifData, iptcData, xmpData, createdTree.get(), !parsedTree, primaryGroups, pHeader,
                         findEncoderFct);
     encoder.add(createdTree.get(), parsedTree.get(), root);
     // Write binary representation from the composite tree
@@ -2228,7 +2228,7 @@ uint16_t TiffHeaderBase::tag() const {
   return tag_;
 }
 
-bool TiffHeaderBase::isImageTag(uint16_t /*tag*/, IfdId /*group*/, const PrimaryGroups* /*primaryGroups*/) const {
+bool TiffHeaderBase::isImageTag(uint16_t /*tag*/, IfdId /*group*/, const PrimaryGroups& /*primaryGroups*/) const {
   return false;
 }
 
@@ -2327,7 +2327,7 @@ TiffHeader::TiffHeader(ByteOrder byteOrder, uint32_t offset, bool hasImageTags)
     TiffHeaderBase(42, 8, byteOrder, offset), hasImageTags_(hasImageTags) {
 }
 
-bool TiffHeader::isImageTag(uint16_t tag, IfdId group, const PrimaryGroups* pPrimaryGroups) const {
+bool TiffHeader::isImageTag(uint16_t tag, IfdId group, const PrimaryGroups& pPrimaryGroups) const {
   if (!hasImageTags_) {
 #ifdef EXIV2_DEBUG_MESSAGES
     std::cerr << "No image tags in this image\n";
@@ -2338,16 +2338,16 @@ bool TiffHeader::isImageTag(uint16_t tag, IfdId group, const PrimaryGroups* pPri
   ExifKey key(tag, groupName(group));
 #endif
   // If there are primary groups and none matches group, we're done
-  if (pPrimaryGroups && !pPrimaryGroups->empty() &&
-      std::find(pPrimaryGroups->begin(), pPrimaryGroups->end(), group) == pPrimaryGroups->end()) {
+  if (!pPrimaryGroups.empty() &&
+      std::find(pPrimaryGroups.begin(), pPrimaryGroups.end(), group) == pPrimaryGroups.end()) {
 #ifdef EXIV2_DEBUG_MESSAGES
     std::cerr << "Not an image tag: " << key << " (1)\n";
 #endif
     return false;
   }
   // All tags of marked primary groups other than IFD0 are considered
   // image tags. That should take care of NEFs until we know better.
-  if (pPrimaryGroups && !pPrimaryGroups->empty() && group != IfdId::ifd0Id) {
+  if (!pPrimaryGroups.empty() && group != IfdId::ifd0Id) {
 #ifdef EXIV2_DEBUG_MESSAGES
     ExifKey key(tag, groupName(group));
     std::cerr << "Image tag: " << key << " (2)\n";

src/tiffimage_int.hpp

@@ -94,7 +94,7 @@ class TiffHeaderBase {
 
     @return The default implementation returns \c false.
    */
-  virtual bool isImageTag(uint16_t tag, IfdId group, const PrimaryGroups* pPrimaryGroups) const;
+  virtual bool isImageTag(uint16_t tag, IfdId group, const PrimaryGroups& pPrimaryGroups) const;
   //@}
 
  private:
@@ -120,7 +120,7 @@ class TiffHeader : public TiffHeaderBase {
   //@}
   //@{
   //! @name Accessors
-  bool isImageTag(uint16_t tag, IfdId group, const PrimaryGroups* pPrimaryGroups) const override;
+  bool isImageTag(uint16_t tag, IfdId group, const PrimaryGroups& pPrimaryGroups) const override;
   //@}
 
  private:

src/tiffvisitor_int.cpp

@@ -123,7 +123,7 @@ void TiffFinder::visitBinaryElement(TiffBinaryElement* object) {
 }
 
 TiffCopier::TiffCopier(TiffComponent* pRoot, uint32_t root, const TiffHeaderBase* pHeader,
-                       const PrimaryGroups* pPrimaryGroups) :
+                       const PrimaryGroups& pPrimaryGroups) :
     pRoot_(pRoot), root_(root), pHeader_(pHeader), pPrimaryGroups_(pPrimaryGroups) {
 }
 
@@ -440,7 +440,7 @@ void TiffDecoder::visitBinaryElement(TiffBinaryElement* object) {
 }
 
 TiffEncoder::TiffEncoder(ExifData& exifData, IptcData& iptcData, XmpData& xmpData, TiffComponent* pRoot,
-                         const bool isNewImage, const PrimaryGroups* pPrimaryGroups, const TiffHeaderBase* pHeader,
+                         const bool isNewImage, const PrimaryGroups& pPrimaryGroups, const TiffHeaderBase* pHeader,
                          FindEncoderFct findEncoderFct) :
     exifData_(exifData),
     iptcData_(iptcData),

src/tiffvisitor_int.hpp

@@ -203,7 +203,7 @@ class TiffCopier : public TiffVisitor {
     @param pHeader Pointer to the TIFF header of the source image.
     @param pPrimaryGroups Pointer to the list of primary groups.
    */
-  TiffCopier(TiffComponent* pRoot, uint32_t root, const TiffHeaderBase* pHeader, const PrimaryGroups* pPrimaryGroups);
+  TiffCopier(TiffComponent* pRoot, uint32_t root, const TiffHeaderBase* pHeader, const PrimaryGroups& pPrimaryGroups);
   TiffCopier(const TiffCopier&) = delete;
   TiffCopier& operator=(const TiffCopier&) = delete;
   //! Virtual destructor
@@ -241,7 +241,7 @@ class TiffCopier : public TiffVisitor {
   TiffComponent* pRoot_;
   uint32_t root_;
   const TiffHeaderBase* pHeader_;
-  const PrimaryGroups* pPrimaryGroups_;
+  PrimaryGroups pPrimaryGroups_;
 };  // class TiffCopier
 
 /*!
@@ -352,7 +352,7 @@ class TiffEncoder : public TiffVisitor {
            find special encoders.
    */
   TiffEncoder(ExifData& exifData, IptcData& iptcData, XmpData& xmpData, TiffComponent* pRoot, bool isNewImage,
-              const PrimaryGroups* pPrimaryGroups, const TiffHeaderBase* pHeader, FindEncoderFct findEncoderFct);
+              const PrimaryGroups& pPrimaryGroups, const TiffHeaderBase* pHeader, FindEncoderFct findEncoderFct);
   TiffEncoder(const TiffEncoder&) = delete;
   TiffEncoder& operator=(const TiffEncoder&) = delete;
   //! Virtual destructor
@@ -517,7 +517,7 @@ class TiffEncoder : public TiffVisitor {
   const TiffHeaderBase* pHeader_;            //!< TIFF image header
   TiffComponent* pRoot_;                     //!< Root element of the composite
   bool isNewImage_;                          //!< True if the TIFF image is created from scratch
-  const PrimaryGroups* pPrimaryGroups_;      //!< List of primary image groups
+  PrimaryGroups pPrimaryGroups_;             //!< List of primary image groups
   TiffComponent* pSourceTree_{nullptr};      //!< Parsed source tree for reference
   ByteOrder byteOrder_;                      //!< Byteorder for encoding
   ByteOrder origByteOrder_;                  //!< Byteorder as set in the c'tor