import os import re import select import socket import sys from StringIO import StringIO def noop(): pass def vim_encode(data): if isinstance(data, list): return "[" + ",".join([vim_encode(x) for x in data]) + "]" elif isinstance(data, dict): return "{" + ",".join([vim_encode(x)+":"+vim_encode(y) for x,y in data.items()]) + "}" elif isinstance(data, str): str_list = [] for c in data: if (0 <= ord(c) and ord(c) <= 31) or c == '"' or c == "\\": str_list.append("\\%03o" % ord(c)) else: str_list.append(c) return '"' + ''.join(str_list) + '"' elif isinstance(data, int): return str(data) else: raise TypeError("can't encode a " + type(data).__name__) def bdecode(f, char=None): if char == None: char = f.read(1) if char == 'l': l = [] while True: char = f.read(1) if char == 'e': return l l.append(bdecode(f, char)) elif char == 'd': d = {} while True: char = f.read(1) if char == 'e': return d key = bdecode(f, char) d[key] = bdecode(f) elif char == 'i': i = 0 while True: char = f.read(1) if char == 'e': return i i = 10 * i + int(char) elif char.isdigit(): i = int(char) while True: char = f.read(1) if char == ':': return f.read(i) i = 10 * i + int(char) elif char == '': raise EOFError("unexpected end of bencode data") else: raise TypeError("unexpected type "+char+"in bencode data") class Connection: def __init__(self, host, port, custom_poll=noop, keepalive_file=None): self.custom_poll = custom_poll self.keepalive_file = keepalive_file s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(8) s.connect((host, int(port))) s.setblocking(1) self.socket = s def poll(self): self.custom_poll() if self.keepalive_file and not os.path.exists(self.keepalive_file): exit(0) def close(self): return self.socket.close() def send(self, payload): self.socket.sendall(payload) return '' def receive(self, char=None): while len(select.select([self.socket], [], [], 0.1)[0]) == 0: self.poll() f = self.socket.makefile() try: return bdecode(f) finally: f.close() def call(self, payload, terminators, selectors): self.send(payload) responses = [] while True: response = self.receive() for key in selectors: if response[key] != selectors[key]: continue responses.append(response) if 'status' in response and set(terminators) & set(response['status']): return responses def dispatch(host, port, poll, keepalive, command, *args): conn = Connection(host, port, poll, keepalive) try: return getattr(conn, command)(*args) finally: conn.close() def main(host, port, keepalive, command, *args): try: sys.stdout.write(vim_encode(dispatch(host, port, noop, keepalive, command, *[bdecode(StringIO(arg)) for arg in args]))) except Exception, e: print(e) exit(1) if __name__ == "__main__": main(*sys.argv[1:])