def read(self, address, size):
assert size > 0
missing = self._feed(address + size)
if missing:
size = self._size - address
if size <= 0:
return 0, '', True
d = []
i = lowerBound(self.fragments, lambda x: x[0] <= address)
a, fa, fs = self.fragments[i - 1]
a -= address
fa -= a
fs += a
s = None
while True:
n = min(fs, size)
u, v, w = self.stream.read(fa, n)
assert not w
if s is None:
s = u
else:
assert not u
d += [v]
size -= n
if not size:
return s, ''.join(d), missing
a, fa, fs = self.fragments[i]
i += 1
def read(self, address, size):
assert size > 0
missing = self._feed(address + size)
if missing:
size = self._size - address
if size <= 0:
return 0, '', True
d = []
i = lowerBound(self.fragments, lambda x: x[0] <= address)
a, fa, fs = self.fragments[i - 1]
a -= address
fa -= a
fs += a
s = None
while True:
n = min(fs, size)
u, v, w = self.stream.read(fa, n)
assert not w
if s is None:
s = u
else:
assert not u
d += [v]
size -= n
if not size:
return s, ''.join(d), missing
a, fa, fs = self.fragments[i]
i += 1
def getFieldByAddress(self, address, feed=True):
"""
Only search in existing fields
"""
if feed and self._field_generator is not None:
self._feedAll()
if address < self._current_size:
i = lowerBound(self._fields.values,
lambda x: x.address + x.size <= address)
if i is not None:
return self._fields.values[i]
return None
def getFieldByAddress(self, address, feed=True):
"""
Only search in existing fields
"""
if feed and self._field_generator is not None:
self._feedAll()
if address < self._current_size:
i = lowerBound(self._fields.values,
lambda x: x.address + x.size <= address)
if i is not None:
return self._fields.values[i]
return None