mirror of
https://github.com/triqs/dft_tools
synced 2024-12-26 14:23:38 +01:00
132 lines
5.0 KiB
Python
132 lines
5.0 KiB
Python
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################################################################################
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#
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# TRIQS: a Toolbox for Research in Interacting Quantum Systems
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#
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# Copyright (C) 2011 by M. Ferrero, O. Parcollet
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#
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# TRIQS is free software: you can redistribute it and/or modify it under the
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# terms of the GNU General Public License as published by the Free Software
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# Foundation, either version 3 of the License, or (at your option) any later
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# version.
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#
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# TRIQS is distributed in the hope that it will be useful, but WITHOUT ANY
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# WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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# details.
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#
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# You should have received a copy of the GNU General Public License along with
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# TRIQS. If not, see <http://www.gnu.org/licenses/>.
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#
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################################################################################
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# h5py
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import numpy,string,h5py
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class HDFArchiveGroupBasicLayer :
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_class_version = 1
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def __init__(self, parent, subpath ):
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""" """
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self.options = parent.options
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self._group = parent._group[subpath] if subpath else parent._group
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assert type(self._group) in [h5py.highlevel.Group,h5py.highlevel.File], "Internal error"
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self.ignored_keys = []
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self.cached_keys = self._group.keys()
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def _init_root(self, LocalFileName, open_flag) :
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try :
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fich = h5py.File(LocalFileName, open_flag)
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except :
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print "Can not open the HDF file %s"%LocalFileName
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raise
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# checking the version
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if open_flag not in ['r','r+','a'] :
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self._version = self._class_version
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else :
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try :
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self._version = int(fich.attrs['HDFArchive_Version'])
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except :
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self._version = 1
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if self._version > self._class_version :
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raise IOError, "File %s is too recent for this version of HDFArchive module"%Filename
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self._group = fich
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def is_group(self,p) :
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"""Is p a subgroup ?"""
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assert len(p)>0 and p[0]!='/'
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return p in self.cached_keys and type(self._group[p]) == h5py.highlevel.Group
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def is_data(self,p) :
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"""Is p a leaf ?"""
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assert len(p)>0 and p[0]!='/'
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return p in self.cached_keys and type(self._group[p]) == h5py.highlevel.Dataset
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def write_attr (self, key, val) :
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self._group.attrs.create(key, val)
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#self._group.attrs[key] = val
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def read_attr(self,attribute_name) :
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return self._group.attrs[attribute_name]
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def _read (self, key) :
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A = self._group[key]
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val = numpy.array(A) if A.shape!=() else A.value
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if self.options["UseAlpsNotationForComplex"] and '__complex__' in self._group[key].attrs :
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assert type(val) == numpy.ndarray, 'complex tag is set, but I have not an array'
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assert not numpy.iscomplexobj(val), 'complex tag is set, but I have a complex !'
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if len(val.shape) == 1 :
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val = val[0] + 1j * val[1]
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else :
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val = val[...,0] + 1j*val[...,1]
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def _numpy_scalar_to_python_scalar (v) :
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n= numpy
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if type(v) in [n.int, n.int8, n.int16, n.int32, n.int64] : return int(v)
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if type(v) in [n.uint8, n.uint16, n.uint32, n.uint64] : return int(v)
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if type(v) in [n.float, n.float32, n.float64] : return float(v)
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if type(v) in [n.complex, n.complex64, n.complex128] : return complex(v)
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if type(v) in [n.str_, n.string_] : return str(v)
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return v
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return _numpy_scalar_to_python_scalar ( val)
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def _write_array(self, key, A) :
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c = self.options["UseAlpsNotationForComplex"] and numpy.iscomplexobj(A)
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if c:
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val = numpy.zeros( A.shape + (2,) )
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val[...,0], val[...,1] = A.real, A.imag
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else :
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val = A
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self._group[key] = numpy.array(val,copy=1,order='C')
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if c : self._group[key].attrs["__complex__"] = 1
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self.cached_keys.append(key)
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def _write_scalar(self, key, A) :
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c = self.options["UseAlpsNotationForComplex"] and type(A) ==type (1j)
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val = numpy.array([A.real, A.imag]) if c else A
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self._group[key] =val
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if c : self._group[key].attrs["__complex__"]= 1
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self.cached_keys.append(key)
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def _flush(self):
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self._group.file.flush()
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def _close(self):
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self._group.file.close()
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def create_group (self,key):
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self._group.create_group(key)
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self.cached_keys.append(key)
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def keys(self) :
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return self.cached_keys
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def _clean_key(self,key, report_error=False) :
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if report_error and key not in self.cached_keys :
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raise KeyError, "Key %s is not in archive !!"%key
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if key in self.cached_keys :
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del self._group[key]
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self.cached_keys.remove(key)
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else: raise KeyError, "Key %s is not in archive !!"%key
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