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Python Compiled Bytecode  |  2011-09-09  |  6.5 KB  |  233 lines
  1. # Source Generated with Decompyle++
  2. # File: in.pyo (Python 2.7)
  3.  
  4. import socket
  5. import asyncore
  6. from collections import deque
  7. from sys import py3kwarning
  8. from warnings import filterwarnings, catch_warnings
  9.  
  10. class async_chat(asyncore.dispatcher):
  11.     ac_in_buffer_size = 4096
  12.     ac_out_buffer_size = 4096
  13.     
  14.     def __init__(self, sock = None, map = None):
  15.         self.ac_in_buffer = ''
  16.         self.incoming = []
  17.         self.producer_fifo = deque()
  18.         asyncore.dispatcher.__init__(self, sock, map)
  19.  
  20.     
  21.     def collect_incoming_data(self, data):
  22.         raise NotImplementedError('must be implemented in subclass')
  23.  
  24.     
  25.     def _collect_incoming_data(self, data):
  26.         self.incoming.append(data)
  27.  
  28.     
  29.     def _get_data(self):
  30.         d = ''.join(self.incoming)
  31.         del self.incoming[:]
  32.         return d
  33.  
  34.     
  35.     def found_terminator(self):
  36.         raise NotImplementedError('must be implemented in subclass')
  37.  
  38.     
  39.     def set_terminator(self, term):
  40.         self.terminator = term
  41.  
  42.     
  43.     def get_terminator(self):
  44.         return self.terminator
  45.  
  46.     
  47.     def handle_read(self):
  48.         
  49.         try:
  50.             data = self.recv(self.ac_in_buffer_size)
  51.         except socket.error:
  52.             why = None
  53.             self.handle_error()
  54.             return None
  55.  
  56.         self.ac_in_buffer = self.ac_in_buffer + data
  57.         while self.ac_in_buffer:
  58.             lb = len(self.ac_in_buffer)
  59.             terminator = self.get_terminator()
  60.             if not terminator:
  61.                 self.collect_incoming_data(self.ac_in_buffer)
  62.                 self.ac_in_buffer = ''
  63.                 continue
  64.             if isinstance(terminator, int) or isinstance(terminator, long):
  65.                 n = terminator
  66.                 if lb < n:
  67.                     self.collect_incoming_data(self.ac_in_buffer)
  68.                     self.ac_in_buffer = ''
  69.                     self.terminator = self.terminator - lb
  70.                 else:
  71.                     self.collect_incoming_data(self.ac_in_buffer[:n])
  72.                     self.ac_in_buffer = self.ac_in_buffer[n:]
  73.                     self.terminator = 0
  74.                     self.found_terminator()
  75.             terminator_len = len(terminator)
  76.             index = self.ac_in_buffer.find(terminator)
  77.             if index != -1:
  78.                 if index > 0:
  79.                     self.collect_incoming_data(self.ac_in_buffer[:index])
  80.                 self.ac_in_buffer = self.ac_in_buffer[index + terminator_len:]
  81.                 self.found_terminator()
  82.                 continue
  83.             index = find_prefix_at_end(self.ac_in_buffer, terminator)
  84.             if index:
  85.                 if index != lb:
  86.                     self.collect_incoming_data(self.ac_in_buffer[:-index])
  87.                     self.ac_in_buffer = self.ac_in_buffer[-index:]
  88.                 break
  89.                 continue
  90.             self.collect_incoming_data(self.ac_in_buffer)
  91.             self.ac_in_buffer = ''
  92.  
  93.     
  94.     def handle_write(self):
  95.         self.initiate_send()
  96.  
  97.     
  98.     def handle_close(self):
  99.         self.close()
  100.  
  101.     
  102.     def push(self, data):
  103.         sabs = self.ac_out_buffer_size
  104.         if len(data) > sabs:
  105.             for i in xrange(0, len(data), sabs):
  106.                 self.producer_fifo.append(data[i:i + sabs])
  107.             
  108.         else:
  109.             self.producer_fifo.append(data)
  110.         self.initiate_send()
  111.  
  112.     
  113.     def push_with_producer(self, producer):
  114.         self.producer_fifo.append(producer)
  115.         self.initiate_send()
  116.  
  117.     
  118.     def readable(self):
  119.         return 1
  120.  
  121.     
  122.     def writable(self):
  123.         if not self.producer_fifo:
  124.             pass
  125.         return not (self.connected)
  126.  
  127.     
  128.     def close_when_done(self):
  129.         self.producer_fifo.append(None)
  130.  
  131.     
  132.     def initiate_send(self):
  133.         while self.producer_fifo and self.connected:
  134.             first = self.producer_fifo[0]
  135.             if not first:
  136.                 del self.producer_fifo[0]
  137.                 if first is None:
  138.                     self.handle_close()
  139.                     return None
  140.             obs = self.ac_out_buffer_size
  141.             
  142.             try:
  143.                 with catch_warnings():
  144.                     if py3kwarning:
  145.                         filterwarnings('ignore', '.*buffer', DeprecationWarning)
  146.                     data = buffer(first, 0, obs)
  147.             except TypeError:
  148.                 data = first.more()
  149.                 if data:
  150.                     self.producer_fifo.appendleft(data)
  151.                     continue
  152.                 del self.producer_fifo[0]
  153.                 continue
  154.  
  155.             
  156.             try:
  157.                 num_sent = self.send(data)
  158.             except socket.error:
  159.                 self.handle_error()
  160.                 return None
  161.  
  162.             if num_sent:
  163.                 if num_sent < len(data) or obs < len(first):
  164.                     self.producer_fifo[0] = first[num_sent:]
  165.                 else:
  166.                     del self.producer_fifo[0]
  167.             return None
  168.  
  169.     
  170.     def discard_buffers(self):
  171.         self.ac_in_buffer = ''
  172.         del self.incoming[:]
  173.         self.producer_fifo.clear()
  174.  
  175.  
  176.  
  177. class simple_producer:
  178.     
  179.     def __init__(self, data, buffer_size = 512):
  180.         self.data = data
  181.         self.buffer_size = buffer_size
  182.  
  183.     
  184.     def more(self):
  185.         if len(self.data) > self.buffer_size:
  186.             result = self.data[:self.buffer_size]
  187.             self.data = self.data[self.buffer_size:]
  188.             return result
  189.         result = None.data
  190.         self.data = ''
  191.         return result
  192.  
  193.  
  194.  
  195. class fifo:
  196.     
  197.     def __init__(self, list = None):
  198.         if not list:
  199.             self.list = deque()
  200.         else:
  201.             self.list = deque(list)
  202.  
  203.     
  204.     def __len__(self):
  205.         return len(self.list)
  206.  
  207.     
  208.     def is_empty(self):
  209.         return not (self.list)
  210.  
  211.     
  212.     def first(self):
  213.         return self.list[0]
  214.  
  215.     
  216.     def push(self, data):
  217.         self.list.append(data)
  218.  
  219.     
  220.     def pop(self):
  221.         if self.list:
  222.             return (1, self.list.popleft())
  223.         return None
  224.  
  225.  
  226.  
  227. def find_prefix_at_end(haystack, needle):
  228.     l = len(needle) - 1
  229.     while l and not haystack.endswith(needle[:l]):
  230.         l -= 1
  231.     return l
  232.  
  233.