88 lines
2.4 KiB
Python
Executable File
88 lines
2.4 KiB
Python
Executable File
import json
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import re
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import socket
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response_re = re.compile(r"(.*)\s+END\s*$")
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key_val_re = re.compile(r'(?P<key>[^=]+)="?(?P<value>([^"]|\\")+)"?')
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class Connector:
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"""Connection to AF_UNIX or AF_INET, get and send data.
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Received data can be parsed from list of `key=value` or JSON.
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"""
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socket = None
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"""The socket."""
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address = None
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"""String to a Unix domain socket file, or a tuple (host, port) for TCP/IP
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connection."""
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@property
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def is_open(self):
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return self.socket is not None
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def __init__(self, address=None):
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if address:
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self.address = address
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def open(self):
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if self.is_open:
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return
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family = (
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socket.AF_UNIX if isinstance(self.address, str) else socket.AF_INET
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)
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try:
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self.socket = socket.socket(family, socket.SOCK_STREAM)
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self.socket.connect(self.address)
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except Exception:
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self.close()
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return -1
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def close(self):
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self.socket.close()
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self.socket = None
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# FIXME: return None on failed
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def send(self, *data, try_count=1, parse=False, parse_json=False):
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if self.open():
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return None
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data = bytes("".join([str(d) for d in data]) + "\n", encoding="utf-8")
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try:
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self.socket.sendall(data)
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data = ""
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while not response_re.search(data):
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data += self.socket.recv(1024).decode("utf-8")
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if data:
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data = response_re.sub(r"\1", data).strip()
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data = (
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self.parse(data)
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if parse
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else self.parse_json(data)
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if parse_json
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else data
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)
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return data
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except Exception:
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self.close()
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if try_count > 0:
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return self.send(data, try_count - 1)
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def parse(self, value):
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return {
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line.groupdict()["key"]: line.groupdict()["value"]
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for line in (key_val_re.search(line) for line in value.split("\n"))
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if line
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}
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def parse_json(self, value):
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try:
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if value[0] == '"' and value[-1] == '"':
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value = value[1:-1]
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return json.loads(value) if value else None
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except Exception:
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return None
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