From caed6b4469665e9c2ed722077a68975aae2bc093 Mon Sep 17 00:00:00 2001
From: Christian Zimmermann <christian.zimmermann@ur.de>
Date: Fri, 13 Jan 2023 01:40:19 +0100
Subject: [PATCH] hdf5: group

---
 CMakeLists.txt                         |  6 ++
 src/CMakeLists.txt                     |  4 ++
 src/opt/hdf5/include/h5_content_base.h |  3 +
 src/opt/hdf5/include/h5_file.h         |  1 -
 src/opt/hdf5/include/h5_group.h        | 37 +++++++++++
 src/opt/hdf5/lib/h5_content_base.cc    |  5 ++
 src/opt/hdf5/lib/h5_group.cc           | 89 ++++++++++++++++++++++++++
 7 files changed, 144 insertions(+), 1 deletion(-)
 create mode 100644 src/opt/hdf5/include/h5_group.h
 create mode 100644 src/opt/hdf5/lib/h5_group.cc

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4f77b8b..24e17db 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -36,4 +36,10 @@ else()
   message(FATAL_ERROR "Threads not found")
 endif()
 
+if(DEFINED ENABLE_hdf5)
+  set(ENABLE_hdf5 ${ENABLE_hdf5} CACHE BOOL "enable hdf5")
+else()
+  set(ENABLE_hdf5 TRUE CACHE BOOL "enable hdf5")
+endif()
+
 add_subdirectory(src)
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 272d174..9e5567b 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -3,4 +3,8 @@ include_directories(${CMAKE_SOURCE_DIR}/src/include)
 add_subdirectory(tests)
 add_subdirectory(lib)
 
+#if(ENABLE_hdf5)
+#  add_subdirectory(opt/hdf5)
+#endif()
+
 install(DIRECTORY include/ DESTINATION ${INSTALL_PATH}/include)
diff --git a/src/opt/hdf5/include/h5_content_base.h b/src/opt/hdf5/include/h5_content_base.h
index 1256ac6..77580ff 100644
--- a/src/opt/hdf5/include/h5_content_base.h
+++ b/src/opt/hdf5/include/h5_content_base.h
@@ -3,6 +3,7 @@
 #define __cxz_h5_content_base_h__
 
 #include "cnorxz.h"
+#include <hdf5.h>
 
 namespace CNORXZ
 {
@@ -37,11 +38,13 @@ namespace CNORXZ
 	    const String& name() const;
 	    const ContentBase* parent() const;
 	    RangePtr range() const;
+	    hid_t id() const;
 	    
 	protected:
 	    String mName;
 	    const ContentBase* mParent = nullptr;
 	    RangePtr mRange;
+	    hid_t mId = 0;
 	};
     }
 
diff --git a/src/opt/hdf5/include/h5_file.h b/src/opt/hdf5/include/h5_file.h
index f28d866..8e7146a 100644
--- a/src/opt/hdf5/include/h5_file.h
+++ b/src/opt/hdf5/include/h5_file.h
@@ -32,7 +32,6 @@ namespace CNORXZ
 	    
 	private:
 	    bool mRo = true;
-	    hid_t mId = 0;
 	    MArray<ContentPtr> mCont;
 	};
     }
diff --git a/src/opt/hdf5/include/h5_group.h b/src/opt/hdf5/include/h5_group.h
new file mode 100644
index 0000000..aa66864
--- /dev/null
+++ b/src/opt/hdf5/include/h5_group.h
@@ -0,0 +1,37 @@
+
+#ifndef __cxz_h5_group_h__
+#define __cxz_h5_group_h__
+
+#include "h5_content_base.h"
+
+namespace CNORXZ
+{
+    namespace hdf5
+    {
+	class Group : public ContentBase
+	{
+	public:
+	    DEFAULT_MEMBERS(Group);
+	    Group(const String& gname, const ContentBase* _parent);
+	    ~Group();
+
+	    virtual ContentType type() const override final;
+	    virtual bool ro() const override final;
+	    virtual Group& load() override final;
+	    virtual Group& close() override final;
+	    virtual MArray<ContentBase>* get() override final;
+	    virtual const MArray<ContentBase>* get() const override final;
+	    virtual String path() const override final;
+	    virtual String filename() const override final;
+
+	    bool exists() const;
+	    Group& append(const ContentPtr& c);
+	    
+	private:
+	    MArray<ContentPtr> mCont;
+	};
+	
+    }
+}
+
+#endif
diff --git a/src/opt/hdf5/lib/h5_content_base.cc b/src/opt/hdf5/lib/h5_content_base.cc
index cbb4fba..686e2e6 100644
--- a/src/opt/hdf5/lib/h5_content_base.cc
+++ b/src/opt/hdf5/lib/h5_content_base.cc
@@ -23,5 +23,10 @@ namespace CNORXZ
 	{
 	    return mRange;
 	}
+
+	hid_t ContentBase::id() const
+	{
+	    return mId;
+	}
     }
 }
diff --git a/src/opt/hdf5/lib/h5_group.cc b/src/opt/hdf5/lib/h5_group.cc
new file mode 100644
index 0000000..d6242e0
--- /dev/null
+++ b/src/opt/hdf5/lib/h5_group.cc
@@ -0,0 +1,89 @@
+
+#include "h5_group.h"
+
+namespace CNORXZ
+{
+    namespace hdf5
+    {
+	Group::Group(const String& gname, const ContentBase* _parent) :
+	    ContentBase(gname, _parent)
+	{
+	    if(this->exists()){
+		mId = H5Gopen( mParent->id(), mName.c_str(), H5P_DEFAULT );
+	    }
+	    else {
+		mId = H5Gcreate( mParent->id(), mName.c_str(),
+				 H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT );
+	    }
+	}
+	
+	Group::~Group()
+	{
+	    if(mId != 0){
+		H5Gclose(mId);
+	    }
+	}
+
+	ContentType Group::type() const
+	{
+	    return ContentType::GROUP;
+	}
+	
+	bool Group::ro() const
+	{
+	    if(mParent){
+		return mParent->ro();
+	    }
+	    return false;
+	}
+	
+	Group& Group::load()
+	{
+	    // load content!!!
+	    return *this;
+	}
+	
+	Group& Group::close()
+	{
+	    return *this;
+	}
+	
+	MArray<ContentBase>* Group::get()
+	{
+	    return mCont;
+	}
+	
+	const MArray<ContentBase>* Group::get() const
+	{
+	    return mCont;
+	}
+	
+	String Group::path() const
+	{
+	    if(mParent){
+		return mParent->path() + "/" + this->name();
+	    }
+	    return this->name();
+	}
+	
+	String Group::filename() const
+	{
+	    if(mParent){
+		return mParent->filename();
+	    }
+	    return String();
+	}
+	
+	bool Group::exists() const
+	{
+	    return H5Lexists(mParent->id(), mName.c_str(), H5P_DEFAULT) != 0;
+	}
+
+	Group& Group::append(const ContentPtr& c)
+	{
+
+	    return *this;
+	}
+
+    }
+}