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dft_tools/triqs/h5/base.hpp
Olivier Parcollet e32602180c Cleaning h5 interface
2014-05-11 21:47:52 +02:00

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/*******************************************************************************
*
* TRIQS: a Toolbox for Research in Interacting Quantum Systems
*
* Copyright (C) 2011-2014 by O. Parcollet
*
* TRIQS is free software: you can redistribute it and/or modify it under the
* terms of the GNU General Public License as published by the Free Software
* Foundation, either version 3 of the License, or (at your option) any later
* version.
*
* TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* TRIQS. If not, see <http://www.gnu.org/licenses/>.
*
******************************************************************************/
#pragma once
#include <triqs/utility/mini_vector.hpp>
#include <type_traits>
#include <H5Cpp.h>
#include <triqs/utility/is_complex.hpp>
namespace triqs {
inline std::string get_triqs_hdf5_data_scheme(bool) { return "bool";}
inline std::string get_triqs_hdf5_data_scheme(int) { return "int";}
inline std::string get_triqs_hdf5_data_scheme(long) { return "long";}
inline std::string get_triqs_hdf5_data_scheme(long long) { return "long long";}
inline std::string get_triqs_hdf5_data_scheme(unsigned int) { return "int";}
inline std::string get_triqs_hdf5_data_scheme(unsigned long) { return "unsigned long";}
inline std::string get_triqs_hdf5_data_scheme(unsigned long long) { return "unsigned long long";}
inline std::string get_triqs_hdf5_data_scheme(float) { return "float";}
inline std::string get_triqs_hdf5_data_scheme(double) { return "double";}
inline std::string get_triqs_hdf5_data_scheme(long double) { return "long double";}
inline std::string get_triqs_hdf5_data_scheme(std::complex<double>) { return "complex";}
namespace h5 {
using utility::mini_vector;
// conversion of C type to HDF5 native
inline H5::PredType native_type_from_C(char) { return H5::PredType::NATIVE_CHAR; }
inline H5::PredType native_type_from_C(signed char) { return H5::PredType::NATIVE_SCHAR; }
inline H5::PredType native_type_from_C(unsigned char) { return H5::PredType::NATIVE_UCHAR; }
inline H5::PredType native_type_from_C(short) { return H5::PredType::NATIVE_SHORT; }
inline H5::PredType native_type_from_C(unsigned short) { return H5::PredType::NATIVE_USHORT; }
inline H5::PredType native_type_from_C(int) { return H5::PredType::NATIVE_INT; }
inline H5::PredType native_type_from_C(unsigned) { return H5::PredType::NATIVE_UINT; }
inline H5::PredType native_type_from_C(long) { return H5::PredType::NATIVE_LONG; }
inline H5::PredType native_type_from_C(unsigned long) { return H5::PredType::NATIVE_ULONG; }
inline H5::PredType native_type_from_C(long long) { return H5::PredType::NATIVE_LLONG; }
inline H5::PredType native_type_from_C(unsigned long long) { return H5::PredType::NATIVE_ULLONG; }
inline H5::PredType native_type_from_C(float) { return H5::PredType::NATIVE_FLOAT; }
inline H5::PredType native_type_from_C(double) { return H5::PredType::NATIVE_DOUBLE; }
inline H5::PredType native_type_from_C(long double) { return H5::PredType::NATIVE_LDOUBLE; }
inline H5::PredType native_type_from_C(bool) { return H5::PredType::NATIVE_SCHAR; }
inline H5::PredType native_type_from_C(std::string) { return H5::PredType::C_S1; }
// conversion of C type to HDF5 native
// NEED TO CHANGE THIS ? It is not standard... We should fix a standard or have a trait
inline H5::PredType h5_type_from_C(char) { return H5::PredType::NATIVE_CHAR; }
inline H5::PredType h5_type_from_C(signed char) { return H5::PredType::NATIVE_SCHAR; }
inline H5::PredType h5_type_from_C(unsigned char) { return H5::PredType::NATIVE_UCHAR; }
inline H5::PredType h5_type_from_C(short) { return H5::PredType::NATIVE_SHORT; }
inline H5::PredType h5_type_from_C(unsigned short) { return H5::PredType::NATIVE_USHORT; }
inline H5::PredType h5_type_from_C(int) { return H5::PredType::NATIVE_INT; }
inline H5::PredType h5_type_from_C(unsigned) { return H5::PredType::NATIVE_UINT; }
inline H5::PredType h5_type_from_C(long) { return H5::PredType::NATIVE_LONG; }
inline H5::PredType h5_type_from_C(unsigned long) { return H5::PredType::NATIVE_ULONG; }
inline H5::PredType h5_type_from_C(long long) { return H5::PredType::NATIVE_LLONG; }
inline H5::PredType h5_type_from_C(unsigned long long) { return H5::PredType::NATIVE_ULLONG; }
inline H5::PredType h5_type_from_C(float) { return H5::PredType::NATIVE_FLOAT; }
inline H5::PredType h5_type_from_C(double) { return H5::PredType::NATIVE_DOUBLE; }
inline H5::PredType h5_type_from_C(long double) { return H5::PredType::NATIVE_LDOUBLE; }
inline H5::PredType h5_type_from_C(bool) { return H5::PredType::NATIVE_SCHAR; }
inline H5::PredType h5_type_from_C(std::string) { return H5::PredType::C_S1; }
// If it is complex<T> return T else T
template<typename T> struct remove_complex { typedef T type;};
template<typename T> struct remove_complex<std::complex<T> > { typedef T type;};
template<typename T> struct remove_complex<std::complex<const T> > { typedef T type;};
template<typename T> struct remove_complex<const T>: remove_complex<T>{};
//------------- compute the data type (removing complex) ----------------------------------
// in memory
template <typename S> H5::PredType data_type_memory () { return native_type_from_C(typename remove_complex<S>::type()); }
// the type of data to put in the file_or_group
template <typename V> H5::PredType data_type_file () { return h5_type_from_C(typename remove_complex<V>::type());}
//------------- compute void * pointer to the data ----------------------------------
template <typename S>
typename std::enable_if< triqs::is_complex<S>::value, typename std::conditional<std::is_const<S>::value, const void *, void *>::type >::type
get_data_ptr (S * p) {
typedef typename std::conditional<std::is_const<S>::value, const typename S::value_type, typename S::value_type>::type T;
return reinterpret_cast<T*>(p);
}
template <typename S >
typename std::enable_if< !triqs::is_complex<S>::value, typename std::conditional<std::is_const<S>::value, const void *, void *>::type >::type
get_data_ptr (S * p) {return p;}
// dataspace from lengths and strides. Correct for the complex. strides must be >0
// used in array and vectors
H5::DataSpace dataspace_from_LS(int R, bool is_complex, hsize_t const *Ltot, hsize_t const *L, hsize_t const *S,
hsize_t const *offset = NULL);
#define TRIQS_ARRAYS_H5_CATCH_EXCEPTION \
catch( triqs::runtime_error const & error) { throw triqs::runtime_error() << error.what();}\
catch( H5::AttributeIException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 Attribute error"; }\
catch( H5::DataSetIException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 DataSet error"; }\
catch( H5::DataSpaceIException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 DataSpace error"; }\
catch( H5::DataTypeIException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 DataType error"; }\
catch( H5::FileIException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 File error"; }\
catch( H5::GroupIException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 Group error"; }\
catch( H5::IdComponentException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 IdComponentException error"; }\
catch( H5::LibraryIException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 LibraryIException error"; }\
catch( H5::PropListIException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 PropListIException error"; }\
catch( H5::ReferenceException const & error ) { error.printError(); TRIQS_RUNTIME_ERROR<<"H5 ReferenceException error"; }\
catch(...) { TRIQS_RUNTIME_ERROR<<"H5 unknown error";}
/****************** Read/Write string attribute *********************************************/
void write_string_attribute(H5::H5Object const *obj, std::string name, std::string value);
/// Returns the attribute name of obj, and "" if the attribute does not exist.
std::string read_string_attribute(H5::H5Object const *obj, std::string name);
}}
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