def open(self, mode='rb'):
try:
if 'r' in mode:
if self.s is not None:
if 'b' in mode:
self.buffer = BytesIO(self.s)
else:
self.buffer = StringIO(self.s)
else:
raise ArgumentError('no string data supplied')
elif 'w' in mode:
if self.buffer is not None:
self.buffer.close()
if 'b' in mode:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
elif 'a' in mode:
if self.buffer is None:
if 'b' in mode:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
yield Uncloseable(self.buffer)
except:
raise
finally:
pass # don't close the buffer
def open(self, mode='rb'):
try:
if 'r' in mode:
if self.s is not None:
if 'b' in mode:
self.buffer = BytesIO(self.s)
else:
self.buffer = StringIO(self.s)
else:
raise ArgumentError('no string data supplied')
elif 'w' in mode:
if self.buffer is not None:
self.buffer.close()
if 'b' in mode:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
elif 'a' in mode:
if self.buffer is None:
if 'b' in self.buffer:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
yield Uncloseable(self.buffer)
except:
raise
finally:
pass # don't close the buffer
class MemorySource(object):
def __init__(self, s=None):
self.s = s
self.buffer = None
@contextmanager
def open(self, mode='rb'):
try:
if 'r' in mode:
if self.s is not None:
if 'b' in mode:
self.buffer = BytesIO(self.s)
else:
self.buffer = StringIO(self.s)
else:
raise ArgumentError('no string data supplied')
elif 'w' in mode:
if self.buffer is not None:
self.buffer.close()
if 'b' in mode:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
elif 'a' in mode:
if self.buffer is None:
if 'b' in self.buffer:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
yield Uncloseable(self.buffer)
except:
raise
finally:
pass # don't close the buffer
def getvalue(self):
if self.buffer:
return self.buffer.getvalue()
class MemorySource(object):
def __init__(self, s=None):
self.s = s
self.buffer = None
@contextmanager
def open(self, mode='rb'):
try:
if 'r' in mode:
if self.s is not None:
if 'b' in mode:
self.buffer = BytesIO(self.s)
else:
self.buffer = StringIO(self.s)
else:
raise ArgumentError('no string data supplied')
elif 'w' in mode:
if self.buffer is not None:
self.buffer.close()
if 'b' in mode:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
elif 'a' in mode:
if self.buffer is None:
if 'b' in self.buffer:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
yield Uncloseable(self.buffer)
except:
raise
finally:
pass # don't close the buffer
def getvalue(self):
if self.buffer:
return self.buffer.getvalue()
class MemorySource(object):
"""Memory data source. E.g.::
>>> import petl as etl
>>> data = b'foo,bar\\na,1\\nb,2\\nc,2\\n'
>>> source = etl.MemorySource(data)
>>> tbl = etl.fromcsv(source)
>>> tbl
+-----+-----+
| foo | bar |
+=====+=====+
| 'a' | '1' |
+-----+-----+
| 'b' | '2' |
+-----+-----+
| 'c' | '2' |
+-----+-----+
>>> sink = etl.MemorySource()
>>> tbl.tojson(sink)
>>> sink.getvalue()
b'[{"foo": "a", "bar": "1"}, {"foo": "b", "bar": "2"}, {"foo": "c", "bar": "2"}]'
Also supports appending.
"""
def __init__(self, s=None):
self.s = s
self.buffer = None
@contextmanager
def open(self, mode='rb'):
try:
if 'r' in mode:
if self.s is not None:
if 'b' in mode:
self.buffer = BytesIO(self.s)
else:
self.buffer = StringIO(self.s)
else:
raise ArgumentError('no string data supplied')
elif 'w' in mode:
if self.buffer is not None:
self.buffer.close()
if 'b' in mode:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
elif 'a' in mode:
if self.buffer is None:
if 'b' in self.buffer:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
yield Uncloseable(self.buffer)
except:
raise
finally:
pass # don't close the buffer
def getvalue(self):
if self.buffer:
return self.buffer.getvalue()
class MemorySource(object):
"""Memory data source. E.g.::
>>> import petl as etl
>>> data = b'foo,bar\\na,1\\nb,2\\nc,2\\n'
>>> source = etl.MemorySource(data)
>>> tbl = etl.fromcsv(source)
>>> tbl
+-----+-----+
| foo | bar |
+=====+=====+
| 'a' | '1' |
+-----+-----+
| 'b' | '2' |
+-----+-----+
| 'c' | '2' |
+-----+-----+
>>> sink = etl.MemorySource()
>>> tbl.tojson(sink)
>>> sink.getvalue()
b'[{"foo": "a", "bar": "1"}, {"foo": "b", "bar": "2"}, {"foo": "c", "bar": "2"}]'
Also supports appending.
"""
def __init__(self, s=None):
self.s = s
self.buffer = None
@contextmanager
def open(self, mode='rb'):
try:
if 'r' in mode:
if self.s is not None:
if 'b' in mode:
self.buffer = BytesIO(self.s)
else:
self.buffer = StringIO(self.s)
else:
raise ArgumentError('no string data supplied')
elif 'w' in mode:
if self.buffer is not None:
self.buffer.close()
if 'b' in mode:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
elif 'a' in mode:
if self.buffer is None:
if 'b' in mode:
self.buffer = BytesIO()
else:
self.buffer = StringIO()
yield Uncloseable(self.buffer)
except:
raise
finally:
pass # don't close the buffer
def getvalue(self):
if self.buffer:
return self.buffer.getvalue()
