RefactoringRope/RefactoringClient.py

# -*- coding: utf-8 -*-

# Copyright (c) 2017 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing the refactoring client interface to rope.
"""

from __future__ import unicode_literals

import sys
import os

sys.path.insert(0, os.path.dirname(__file__))
if sys.version_info[0] >= 3:
    path = os.path.join(os.path.dirname(__file__), 'rope_py3')
else:
    path = os.path.join(os.path.dirname(__file__), 'rope_py2')
sys.path.insert(0, path)

##try:
##    bytes = unicode
##    import StringIO as io   # __IGNORE_EXCEPTION__
##except NameError:
##    import io       # __IGNORE_WARNING__
##
##import socket
##import select
##import traceback
##import time
##import json

import rope.base.project

from JsonClient import JsonClient


class RefactoringClient(JsonClient):
    """
    Class implementing the refactoring client interface to rope.
    """
    def __init__(self, host, port, projectPath):
        """
        Constructor
        
        @param host ip address the background service is listening
        @type str
        @param port port of the background service
        @type int
        @param projectPath path to the project
        @type str
        """
        super(RefactoringClient, self).__init__(host, port)
##        self.__connection = socket.create_connection((host, port))
        
        from FileSystemCommands import RefactoringClientFileSystemCommands
        self.__fsCommands = RefactoringClientFileSystemCommands(self)
        
        self.__projectpath = projectPath
        self.__project = rope.base.project.Project(
            self.__projectpath, fscommands=self.__fsCommands)
    
    def handleCall(self, method, params):
        """
        Public method to handle a method call from the server.
        
        @param method requested method name
        @type str
        @param params dictionary with method specific parameters
        @type dict
        """
##        if "filename" in params and sys.version_info[0] == 2:
##            params["filename"] = params["filename"].encode(
##                sys.getfilesystemencoding())
        
        if method == "ping":
            self.sendJson("pong", {})
##    
##    def sendJson(self, command, params):
##        """
##        Public method to send a single refactoring command to the client.
##        
##        @param command command name to be sent
##        @type str
##        @param params dictionary of named parameters for the command
##        @type dict
##        """
##        import json
##        
##        commandDict = {
##            "jsonrpc": "2.0",
##            "method": command,
##            "params": params,
##        }
##        cmd = json.dumps(commandDict) + '\n'
##        self.__connection.sendall(cmd.encode('utf8', 'backslashreplace'))
##    
##    def __receiveJson(self):
##        """
##        Private method to receive a JSON encode command and data from the
##        server.
##        """
##        line = self.__connection.recv(1024 * 1024, socket.MSG_PEEK) # 1M buffer
##
##        eol = line.find(b'\n')
##
##        if eol >= 0:
##            size = eol + 1
##
##            # Now we know how big the line is, read it for real.
##            line = self.__connection.recv(size).decode(
##                'utf8', 'backslashreplace')
##            try:
##                commandDict = json.loads(line.strip())
##            except (TypeError, ValueError) as err:
##                self.sendJson("ClientException", {
##                    "ExceptionType": "ProtocolError",
##                    "ExceptionValue": str(err),
##                    "ProtocolData": line.strip(),
##                })
##                return
##            
##            method = commandDict["method"]
##            params = commandDict["params"]
##            self.handleCall(method, params)
##    
##    def run(self):
##        """
##        Public method implementing the main loop of the client.
##        """
##        try:
##            while True:
##                try:
##                    rrdy, wrdy, xrdy = select.select(
##                        [self.__connection], [], [])
##                except (select.error, KeyboardInterrupt, socket.error):
##                    # just carry on
##                    continue
##                
##                if self.__connection in rrdy:
##                    self.__receiveJson()
##        
##        except Exception:
##            exctype, excval, exctb = sys.exc_info()
##            tbinfofile = io.StringIO()
##            traceback.print_tb(exctb, None, tbinfofile)
##            tbinfofile.seek(0)
##            tbinfo = tbinfofile.read()
##            del exctb
##            self.sendJson("ClientException", {
##                "ExceptionType": str(exctype),
##                "ExceptionValue": str(excval),
##                "Traceback": tbinfo,
##            })
##
##        # Give time to process latest response on server side
##        time.sleep(0.5)
##        self.__connection.shutdown(socket.SHUT_RDWR)
##        self.__connection.close()

if __name__ == '__main__':
    if len(sys.argv) != 4:
        print('Host, port and project path parameters are missing. Abort.')
        sys.exit(1)
    
    host, port, projectPath = sys.argv[1:]
    client = RefactoringClient(host, int(port), projectPath)
    # Start the main loop
    client.run()

#
# eflag: noqa = M801