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authorPicca Frédéric-Emmanuel <picca@debian.org>2018-03-04 10:20:27 +0100
committerPicca Frédéric-Emmanuel <picca@debian.org>2018-03-04 10:20:27 +0100
commit270d5ddc31c26b62379e3caa9044dd75ccc71847 (patch)
tree55c5bfc851dfce7172d335cd2405b214323e3caf /silx/gui/hdf5/Hdf5Item.py
parente19c96eff0c310c06c4f268c8b80cb33bd08996f (diff)
New upstream version 0.7.0+dfsg
Diffstat (limited to 'silx/gui/hdf5/Hdf5Item.py')
-rw-r--r--silx/gui/hdf5/Hdf5Item.py126
1 files changed, 74 insertions, 52 deletions
diff --git a/silx/gui/hdf5/Hdf5Item.py b/silx/gui/hdf5/Hdf5Item.py
index f131f61..9804907 100644
--- a/silx/gui/hdf5/Hdf5Item.py
+++ b/silx/gui/hdf5/Hdf5Item.py
@@ -25,7 +25,7 @@
__authors__ = ["V. Valls"]
__license__ = "MIT"
-__date__ = "26/09/2017"
+__date__ = "10/10/2017"
import logging
@@ -40,12 +40,6 @@ from ..hdf5.Hdf5Formatter import Hdf5Formatter
_logger = logging.getLogger(__name__)
-try:
- import h5py
-except ImportError as e:
- _logger.error("Module %s requires h5py", __name__)
- raise e
-
_formatter = TextFormatter()
_hdf5Formatter = Hdf5Formatter(textFormatter=_formatter)
# FIXME: The formatter should be an attribute of the Hdf5Model
@@ -57,15 +51,15 @@ class Hdf5Item(Hdf5Node):
tree structure.
"""
- def __init__(self, text, obj, parent, key=None, h5pyClass=None, linkClass=None, populateAll=False):
+ def __init__(self, text, obj, parent, key=None, h5Class=None, linkClass=None, populateAll=False):
"""
:param str text: text displayed
- :param object obj: Pointer to h5py data. See the `obj` attribute.
+ :param object obj: Pointer to a h5py-link object. See the `obj` attribute.
"""
self.__obj = obj
self.__key = key
- self.__h5pyClass = h5pyClass
- self.__isBroken = obj is None and h5pyClass is None
+ self.__h5Class = h5Class
+ self.__isBroken = obj is None and h5Class is None
self.__error = None
self.__text = text
self.__linkClass = linkClass
@@ -74,7 +68,7 @@ class Hdf5Item(Hdf5Node):
@property
def obj(self):
if self.__key:
- self.__initH5pyObject()
+ self.__initH5Object()
return self.__obj
@property
@@ -82,6 +76,20 @@ class Hdf5Item(Hdf5Node):
return self.__text
@property
+ def h5Class(self):
+ """Returns the class of the stored object.
+
+ When the object is in lazy loading, this method should be able to
+ return the type of the futrue loaded object. It allows to delay the
+ real load of the object.
+
+ :rtype: silx.io.utils.H5Type
+ """
+ if self.__h5Class is None and self.obj is not None:
+ self.__h5Class = silx.io.utils.get_h5_class(self.obj)
+ return self.__h5Class
+
+ @property
def h5pyClass(self):
"""Returns the class of the stored object.
@@ -91,15 +99,14 @@ class Hdf5Item(Hdf5Node):
:rtype: h5py.File or h5py.Dataset or h5py.Group
"""
- if self.__h5pyClass is None and self.obj is not None:
- self.__h5pyClass = silx.io.utils.get_h5py_class(self.obj)
- return self.__h5pyClass
+ type_ = self.h5Class
+ return silx.io.utils.h5type_to_h5py_class(type_)
@property
def linkClass(self):
"""Returns the link class object of this node
- :type: h5py.SoftLink or h5py.HardLink or h5py.ExternalLink or None
+ :rtype: H5Type
"""
return self.__linkClass
@@ -109,16 +116,16 @@ class Hdf5Item(Hdf5Node):
:rtype: bool
"""
- if self.h5pyClass is None:
+ if self.h5Class is None:
return False
- return issubclass(self.h5pyClass, h5py.Group)
+ return self.h5Class in [silx.io.utils.H5Type.GROUP, silx.io.utils.H5Type.FILE]
def isBrokenObj(self):
"""Returns true if the stored HDF5 object is broken.
- The stored object is then an h5py link (external or not) which point
- to nowhere (tbhe external file is not here, the expected dataset is
- still not on the file...)
+ The stored object is then an h5py-like link (external or not) which
+ point to nowhere (tbhe external file is not here, the expected
+ dataset is still not on the file...)
:rtype: bool
"""
@@ -137,7 +144,7 @@ class Hdf5Item(Hdf5Node):
return len(self.obj)
return 0
- def __initH5pyObject(self):
+ def __initH5Object(self):
"""Lazy load of the HDF5 node. It is reached from the parent node
with the key of the node."""
parent_obj = self.parent.obj
@@ -145,7 +152,9 @@ class Hdf5Item(Hdf5Node):
try:
obj = parent_obj.get(self.__key)
except Exception as e:
- _logger.debug("Internal h5py error", exc_info=True)
+ lib_name = self.obj.__class__.__module__.split(".")[0]
+ _logger.debug("Internal %s error", lib_name, exc_info=True)
+ _logger.debug("Backtrace", exc_info=True)
try:
self.__obj = parent_obj.get(self.__key, getlink=True)
except Exception:
@@ -168,9 +177,11 @@ class Hdf5Item(Hdf5Node):
if not hasattr(self.__obj, "file"):
self.__obj.file = parent_obj.file
- if isinstance(self.__obj, h5py.ExternalLink):
+ class_ = silx.io.utils.get_h5_class(self.__obj)
+
+ if class_ == silx.io.utils.H5Type.EXTERNAL_LINK:
message = "External link broken. Path %s::%s does not exist" % (self.__obj.filename, self.__obj.path)
- elif isinstance(self.__obj, h5py.SoftLink):
+ elif class_ == silx.io.utils.H5Type.SOFT_LINK:
message = "Soft link broken. Path %s does not exist" % (self.__obj.path)
else:
name = self.obj.__class__.__name__.split(".")[-1].capitalize()
@@ -204,14 +215,25 @@ class Hdf5Item(Hdf5Node):
try:
class_ = self.obj.get(name, getclass=True)
link = self.obj.get(name, getclass=True, getlink=True)
- except Exception as e:
- _logger.warn("Internal h5py error", exc_info=True)
+ link = silx.io.utils.get_h5_class(class_=link)
+ except Exception:
+ lib_name = self.obj.__class__.__module__.split(".")[0]
+ _logger.warning("Internal %s error", lib_name, exc_info=True)
+ _logger.debug("Backtrace", exc_info=True)
class_ = None
try:
link = self.obj.get(name, getclass=True, getlink=True)
- except Exception as e:
- link = h5py.HardLink
- item = Hdf5Item(text=name, obj=None, parent=self, key=name, h5pyClass=class_, linkClass=link)
+ link = silx.io.utils.get_h5_class(class_=link)
+ except Exception:
+ _logger.debug("Backtrace", exc_info=True)
+ link = silx.io.utils.H5Type.HARD_LINK
+
+ h5class = None
+ if class_ is not None:
+ h5class = silx.io.utils.get_h5_class(class_=class_)
+ if h5class is None:
+ _logger.error("Class %s unsupported", class_)
+ item = Hdf5Item(text=name, obj=None, parent=self, key=name, h5Class=h5class, linkClass=link)
self.appendChild(item)
def hasChildren(self):
@@ -234,16 +256,16 @@ class Hdf5Item(Hdf5Node):
if self.__isBroken:
icon = style.standardIcon(qt.QStyle.SP_MessageBoxCritical)
return icon
- class_ = self.h5pyClass
- if issubclass(class_, h5py.File):
+ class_ = self.h5Class
+ if class_ == silx.io.utils.H5Type.FILE:
return style.standardIcon(qt.QStyle.SP_FileIcon)
- elif issubclass(class_, h5py.Group):
+ elif class_ == silx.io.utils.H5Type.GROUP:
return style.standardIcon(qt.QStyle.SP_DirIcon)
- elif issubclass(class_, h5py.SoftLink):
+ elif class_ == silx.io.utils.H5Type.SOFT_LINK:
return style.standardIcon(qt.QStyle.SP_DirLinkIcon)
- elif issubclass(class_, h5py.ExternalLink):
+ elif class_ == silx.io.utils.H5Type.EXTERNAL_LINK:
return style.standardIcon(qt.QStyle.SP_FileLinkIcon)
- elif issubclass(class_, h5py.Dataset):
+ elif class_ == silx.io.utils.H5Type.DATASET:
if obj.shape is None:
name = "item-none"
elif len(obj.shape) < 4:
@@ -262,28 +284,28 @@ class Hdf5Item(Hdf5Node):
"""
attributeDict = collections.OrderedDict()
- if issubclass(self.h5pyClass, h5py.Dataset):
+ if self.h5Class == silx.io.utils.H5Type.DATASET:
attributeDict["#Title"] = "HDF5 Dataset"
attributeDict["Name"] = self.basename
attributeDict["Path"] = self.obj.name
attributeDict["Shape"] = self._getFormatter().humanReadableShape(self.obj)
attributeDict["Value"] = self._getFormatter().humanReadableValue(self.obj)
attributeDict["Data type"] = self._getFormatter().humanReadableType(self.obj, full=True)
- elif issubclass(self.h5pyClass, h5py.Group):
+ elif self.h5Class == silx.io.utils.H5Type.GROUP:
attributeDict["#Title"] = "HDF5 Group"
attributeDict["Name"] = self.basename
attributeDict["Path"] = self.obj.name
- elif issubclass(self.h5pyClass, h5py.File):
+ elif self.h5Class == silx.io.utils.H5Type.FILE:
attributeDict["#Title"] = "HDF5 File"
attributeDict["Name"] = self.basename
attributeDict["Path"] = "/"
- elif isinstance(self.obj, h5py.ExternalLink):
+ elif self.h5Class == silx.io.utils.H5Type.EXTERNAL_LINK:
attributeDict["#Title"] = "HDF5 External Link"
attributeDict["Name"] = self.basename
attributeDict["Path"] = self.obj.name
attributeDict["Linked path"] = self.obj.path
attributeDict["Linked file"] = self.obj.filename
- elif isinstance(self.obj, h5py.SoftLink):
+ elif self.h5Class == silx.io.utils.H5Type.SOFT_LINK:
attributeDict["#Title"] = "HDF5 Soft Link"
attributeDict["Name"] = self.basename
attributeDict["Path"] = self.obj.name
@@ -331,8 +353,8 @@ class Hdf5Item(Hdf5Node):
if role == qt.Qt.DisplayRole:
if self.__error is not None:
return ""
- class_ = self.h5pyClass
- if issubclass(class_, h5py.Dataset):
+ class_ = self.h5Class
+ if class_ == silx.io.utils.H5Type.DATASET:
text = self._getFormatter().humanReadableType(self.obj)
else:
text = ""
@@ -349,8 +371,8 @@ class Hdf5Item(Hdf5Node):
if role == qt.Qt.DisplayRole:
if self.__error is not None:
return ""
- class_ = self.h5pyClass
- if not issubclass(class_, h5py.Dataset):
+ class_ = self.h5Class
+ if class_ != silx.io.utils.H5Type.DATASET:
return ""
return self._getFormatter().humanReadableShape(self.obj)
return None
@@ -364,7 +386,7 @@ class Hdf5Item(Hdf5Node):
if role == qt.Qt.DisplayRole:
if self.__error is not None:
return ""
- if not issubclass(self.h5pyClass, h5py.Dataset):
+ if self.h5Class != silx.io.utils.H5Type.DATASET:
return ""
return self._getFormatter().humanReadableValue(self.obj)
return None
@@ -387,7 +409,7 @@ class Hdf5Item(Hdf5Node):
if role == qt.Qt.ToolTipRole:
if self.__error is not None:
self.obj # lazy loading of the object
- self.__initH5pyObject()
+ self.__initH5Object()
return self.__error
if "desc" in self.obj.attrs:
text = self.obj.attrs["desc"]
@@ -405,11 +427,11 @@ class Hdf5Item(Hdf5Node):
if role == qt.Qt.DisplayRole:
if self.isBrokenObj():
return ""
- class_ = self.h5pyClass
+ class_ = self.obj.__class__
text = class_.__name__.split(".")[-1]
return text
if role == qt.Qt.ToolTipRole:
- class_ = self.h5pyClass
+ class_ = self.obj.__class__
if class_ is None:
return ""
return "Class name: %s" % self.__class__
@@ -430,11 +452,11 @@ class Hdf5Item(Hdf5Node):
link = self.linkClass
if link is None:
return ""
- elif link is h5py.ExternalLink:
+ elif link == silx.io.utils.H5Type.EXTERNAL_LINK:
return "External"
- elif link is h5py.SoftLink:
+ elif link == silx.io.utils.H5Type.SOFT_LINK:
return "Soft"
- elif link is h5py.HardLink:
+ elif link == silx.io.utils.H5Type.HARD_LINK:
return ""
else:
return link.__name__