Adding new C++ wrappers

Description:
    Added wrappers for H5Tencode to class DataType and H5Tdecode to
    classes DataType and its subclasses.

        // Creates a binary object description of this datatype.
        void DataType::encode()

        // Returns the decoded type from the binary object description.
        virtual DataType* DataType::decode() const;
        virtual DataType* ArrayType::decode() const;
        virtual DataType* CompType::decode() const;
        virtual DataType* DataType::decode() const;
        virtual DataType* EnumType::decode() const;
        virtual DataType* FloatType::decode() const;
        virtual DataType* IntType::decode() const;
        virtual DataType* StrType::decode() const;
        virtual DataType* VarLenType::decode() const;

Platforms tested:
    Linux/32 2.6 (jam)
    Linux/64 (platypus)
    Darwin (osx1010test)

1 files changed, 19 insertions, 0 deletions

diff --git a/c++/src/H5DataType.h b/c++/src/H5DataType.h
index 32a79fa..50d2fc1 100644
--- a/c++/src/H5DataType.h
+++ b/c++/src/H5DataType.h
@@ -50,6 +50,13 @@ class H5_DLLCPP DataType : public H5Object {
         // Copies the datatype of dset to this datatype object.
         void copy(const DataSet& dset);
 
+        // Returns a DataType instance by decoding the binary object
+        // description of this datatype.
+        virtual DataType* decode() const;
+
+        // Creates a binary object description of this datatype.
+        void encode();
+
         // Returns the datatype class identifier.
         H5T_class_t getClass() const;
 
@@ -130,6 +137,9 @@ class H5_DLLCPP DataType : public H5Object {
         // Default constructor
         DataType();
 
+        // Determines whether this datatype has a binary object description.
+        bool hasBinaryDesc() const;
+
         // Gets the datatype id.
         virtual hid_t getId() const;
 
@@ -140,6 +150,10 @@ class H5_DLLCPP DataType : public H5Object {
 #ifndef DOXYGEN_SHOULD_SKIP_THIS
         hid_t id;    // HDF5 datatype id
 
+        // Returns an id of a type by decoding the binary object
+        // description of this datatype.
+        hid_t p_decode() const;
+
         // Sets the datatype id.
         virtual void p_setId(const hid_t new_id);
 
@@ -149,6 +163,11 @@ class H5_DLLCPP DataType : public H5Object {
 #endif // DOXYGEN_SHOULD_SKIP_THIS
 
    private:
+        // Buffer for binary object description of this datatype, allocated
+        // in DataType::encode and used in DataType::decode
+        unsigned char *encoded_buf;
+        size_t buf_size;
+
         // Friend function to set DataType id.  For library use only.
         friend void f_DataType_setId(DataType* dtype, hid_t new_id);