def setUp(self):
"""
This method sets the following instance attributes:
* ``h5fname``: the name of the temporary HDF5 file.
* ``h5file``: the writable, temporary HDF5 file with a ``/test`` node.
* ``fnode``: the readable file node in ``/test``, with text in it.
"""
super(ReadlineTestCase, self).setUp()
linesep = self.lineSeparator
# Fill the node file with some text.
fnode = filenode.newNode(self.h5file, where = '/', name = 'test')
fnode.lineSeparator = linesep
fnode.write(linesep)
fnode.write('short line%sshort line%s%s' % ((linesep,) * 3))
fnode.write('long line ' * 20 + linesep)
fnode.write('unterminated')
fnode.close()
# Re-open it for reading.
self.fnode = filenode.openNode(self.h5file.getNode('/test'))
self.fnode.lineSeparator = linesep
def test00_OpenFileRead(self):
"Opening an existing file node for reading."
node = self.h5file.getNode('/test')
fnode = filenode.openNode(node)
self.assertEqual(
fnode.node, node, "filenode.openNode() opened the wrong node.")
self.assertEqual(
fnode.mode, 'r',
"File was opened with an invalid mode %s." % repr(fnode.mode))
self.assertEqual(
fnode.tell(), 0L,
"Pointer is not positioned at the beginning of the file.")
fnode.close()
def readFile(self, fileNodeToRead, outputfileName):
"""
Used to export a binary file within the HDFFIle to a output file.
"""
logging.debug(fileNodeToRead)
fileNodeToRead = os.path.join(
os.path.dirname(fileNodeToRead), self._makesafekey(os.path.basename(fileNodeToRead))
)
logging.debug(fileNodeToRead)
fileNodeOb = self.hdfFile.getNode(fileNodeToRead)
fnode = filenode.openNode(fileNodeOb, "r")
with open(outputfileName, "w") as fdisk:
fdisk.write(fnode.read())
fdisk.close()
fnode.close()
def retrieve_srcdata(datastore, data_filename, output_filename):
store = pd.HDFStore(datastore, "r")
# pandas API change between 0.10.1 and 0.11
try:
_h = store.handle
except:
_h = store._handle
fnode = filenode.openNode(_h.getNode(where="/{0}".format(path_src),
name=data_filename))
DATA = fnode.read()
fnode.close()
with open(output_filename, "wb") as fd:
fd.write(DATA)
del DATA
store.close()
def setUp(self):
"""
This method sets the following instance attributes:
* ``h5fname``: the name of the temporary HDF5 file.
* ``h5file``: the writable, temporary HDF5 file with a ``/test`` node.
* ``fnode``: the readable file node in ``/test``.
"""
self.h5fname = tempfile.mktemp(suffix = '.h5')
self.oldh5fname = self._testFilename(self.oldh5fname)
oldh5f = tables.openFile(self.oldh5fname)
oldh5f.copyFile(self.h5fname)
oldh5f.close()
self.h5file = tables.openFile(
self.h5fname, 'r+',
title = "Test for file node old version compatibility")
self.fnode = filenode.openNode(self.h5file.root.test, 'a+')
def setUp(self):
"""setUp() -> None
This method sets the following instance attributes:
* 'datafile', the opened data file
* 'h5fname', the name of the temporary HDF5 file
* 'h5file', the writable, temporary HDF5 file with a '/test' node
* 'fnode', the readable file node in '/test', with data in it
"""
self.datafname = self._testFilename(self.datafname)
self.datafile = file(self.datafname)
super(ReadFileTestCase, self).setUp()
fnode = filenode.newNode(self.h5file, where = '/', name = 'test')
copyFileToFile(self.datafile, fnode)
fnode.close()
self.datafile.seek(0)
self.fnode = filenode.openNode(self.h5file.getNode('/test'))
"""How to use the filenode module."""
from tables.nodes import filenode
import tables
h5file = tables.openFile('fnode.h5', 'w')
fnode = filenode.newNode(h5file, where='/', name='fnode_test')
print >> fnode, "This is a test text line."
print >> fnode, "And this is another one."
print >> fnode
fnode.write("Of course, file methods can also be used.")
fnode.close()
node = h5file.root.fnode_test
fnode = filenode.openNode(node, 'a+')
print >> fnode, "This is a new line."
fnode.attrs.content_type = 'text/plain; charset=us-ascii'
fnode.attrs.author = "Ivan Vilata i Balaguer"
fnode.attrs.creation_date = '2004-10-20T13:25:25+0200'
fnode.attrs.keywords_en = ["FileNode", "test", "metadata"]
fnode.attrs.keywords_ca = ["FileNode", "prova", "metadades"]
fnode.attrs.owner = 'ivan'
fnode.attrs.acl = {'ivan': 'rw', '@users': 'r'}
fnode.close()
h5file.close()
print >> fnode, "And this is another one."
print >> fnode
fnode.write("Of course, file methods can also be used.")
fnode.seek(0) # Go back to the beginning of file.
for line in fnode:
print repr(line)
fnode.close()
print fnode.closed
node = h5file.root.fnode_test
fnode = filenode.openNode(node, 'a+')
print repr(fnode.readline())
print fnode.tell()
print >> fnode, "This is a new line."
print repr(fnode.readline())
fnode.seek(0)
for line in fnode:
print repr(line)
fnode.attrs.content_type = 'text/plain; charset=us-ascii'
fnode.attrs.author = "Ivan Vilata i Balaguer"
