def _seek_index(self, seek_count):
"""Seeks the index file to immediately *after* seek_count.
May be the end of the file."""
last = self._read_last_count()
if last <= seek_count:
return
last_pos = self.index_fp.tell() / 12
# Let's guess where we should go...
## FIXME: might be better to count back absolutely, instead of
## using the range
guess = last_pos * seek_count / last
self.index_fp.seek(guess * 12 + 8)
least = 0
greatest = last_pos
while 1:
count, = int_encoding.unpack(self.index_fp.read(4))
if count == seek_count:
return
if seek_count > count:
least = guess
else:
greatest = guess
if greatest - least < 1:
# either we've bounded the target, or we've bounded an
# empty spot (meaning the target doesn't exist, but
# we're okay)
if greatest != guess:
# We're not at the right place yet
os.seek(greatest * 12)
return
diff = seek_count - count
self.index_fp.seek(diff * 12 - 4, os.SEEK_CUR)
def marshal(self, obj):
# return str(obj)
dict = obj
os = cStringIO.StringIO()
os.write("{\n")
for key in dict.keys():
os.write("%s: %s,\n" % (` key `, ` dict[key] `))
os.write("}\n")
os.seek(0)
return os.read()
def __seek_to_last_line(self, f): f.seek(0, 2) if f.tell() == 0: return # An empty file # Using lowlevel IO to make sure we play with single bytes fd = f.fileno() # os.lseek(fd, -1, 2) # Go to the last byte char = None # Here goes the delimiter portability, well, most stuff # won't work on non-unix (or even non-Linux), so doing # this the right way doesn't really pay off. while f.tell() > 0: char = os.read(fd, 1) if char == '\n': return # We found our place os.seek(-2, 1) # Seek to one before
def update_debugbtn(self): # BokehKzinRing::update_button_in()
"""update_debugbtn Button via an event lambda"""
os = io.StringIO()
self.debug(f"{self.name} Debug", os=os)
os.seek(0)
self.display.display(BokehKzinRing.brre.sub("<br/>", os.read()))
sessiondb_path = base64.b64decode(sessiondb_path)
persist_file = None
try:
while True:
# establish <I/O channel> socket connection.
io_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
io_socket.connect(("127.0.0.1", io_port))
driver = TeletypeDriver(pid, ttyname, master, io_socket,
control_connection)
if persist_file:
size = os.stat(persist_file).st_size
pos = size - BUFFER_SIZE * 2
persist = open(persist_file)
if pos > 0:
os.seek(pos)
try:
while True:
buf = os.read(persist.fileno(), BUFFER_SIZE)
if not buf:
break
io_socket.send(buf)
finally:
persist.close()
os.remove(persist_file)
persist_file = None
driver.drive_tty()
if not driver.isalive():
trace("closed.")
try:
while True:
# establish <I/O channel> socket connection.
io_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
io_socket.connect(("127.0.0.1", io_port))
driver = TeletypeDriver(pid,
ttyname,
master,
io_socket,
control_connection)
if persist_file:
size = os.stat(persist_file).st_size
pos = size - BUFFER_SIZE * 2
persist = open(persist_file)
if pos > 0:
os.seek(pos)
try:
while True:
buf = os.read(persist.fileno(), BUFFER_SIZE)
if not buf:
break
io_socket.send(buf)
finally:
persist.close()
os.remove(persist_file)
persist_file = None
driver.drive_tty()
if not driver.isalive():
trace("closed.")