def write(self, buf, offset):
self.inode.rewind()
found = False
count = 0
block = None
while self.inode.exists_next_block() and not found:
block = self.inode.next_block()
found = count + block.size > offset
if not found:
count += block.size
if not found and (self.inode.file_size - offset) <= 0:
if len(self.free) == 0:
return
byte, key = crypt.GenerateKey()
type = 1
newblock = Block(self.free[0], key, new=True, prefix=self.prefix)
self.inode.add_direction(type, newblock.src, newblock.size,
newblock.key)
del self.free[0]
block = self.inode.next_block()
if block is None:
return
newfrom = offset
newsize = len(buf)
written = 0
while newsize > 0 and (newfrom - count) < block.size:
block[newfrom - count] = buf[newfrom - offset]
newfrom += 1
newsize -= 1
written += 1
if newfrom > self.inode.file_size:
self.inode.set_size(self.inode.file_size + 1)
if newsize > 0:
written += self.write(buf[newfrom - offset:], newfrom)
return written
