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pysqlconsole.py
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pysqlconsole.py
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# -*- coding: utf-8 -*-
"""
Created on Wed Dec 11 18:07:47 2019
@author: Jakub Sarnowski
"""
import pyodbc
import sys
from getpass import getpass
from inspect import signature
from datetime import datetime
import commands as commands
import settings
from tabulate import tabulate
success = False
def drawInitBoard():
print(r"""
_____ __ __ __ _ ___ __ __ _ __ __ _ ___
| _,\ `v' /' _/ /__\| | __ / _//__\| \| |/' _/ /__\| | | __|
| v_/`. .'`._`.| \/ | ||__| \_| \/ | | ' |`._`.| \/ | |_| _|
|_| !_! |___/ \_V_\___| \__/\__/|_|\__||___/ \__/|___|___|
v.0.3.0.2
+-----------------------------------+
| Welcome to PySQL Console |
|-----------------------------------|
| author: Jakub Sarnowski |
| github.com/jsarnowski96 |
+-----------------------------------+
""")
def UserAuthentication(username = "", password = "", unit_test = "false"):
global success
try:
if settings.global_config_array["username"] != None:
settings.global_config_array["username"] = None
if settings.global_config_array["password"] != None:
settings.global_config_array["password"] = None
if username == "" and password == "":
username = str(input("Username: "))
password = getpass()
settings.global_config_array["username"] = username
settings.global_config_array["password"] = password
dbConnection = ""
if settings.global_config_array["user_sql_session"] != None:
settings.global_config_array["user_sql_session"].close()
settings.global_config_array["user_sql_session"] = None
dbConnection = pyodbc.connect('Driver={'+settings.global_config_array["driver"]+'};'
'Server=localhost;'
'Database=master;'
'uid='+username+';'
'pwd='+password+';'
'Trusted_Connection=no;')
if dbConnection:
success = True
settings.global_config_array["user_sql_session"] = dbConnection
if unit_test == "false":
print("+--------------------------------+")
print("| User Authentication successful |")
print("+--------------------------------+")
now = datetime.now()
table = [["\nWelcome back, " + username + "!"], [" \nToday is " + now.strftime("%Y-%m-%d %H:%M:%S")]]
print(tabulate(table, tablefmt="psql"), "\n")
except pyodbc.Warning as w:
print("Warning:",w.args[0],"\n",w,"\n")
print("Warning: - possible data truncation.\n")
except pyodbc.DatabaseError as e:
print("Error:",e.args[0],"\n",e,"\n")
print("Could not connect to the database - incorrect server name or database.\n")
except pyodbc.DataError as e:
print("Error:",e.args[0],"\n",e,"\n")
print("Illegal operation detected.\n")
except pyodbc.OperationalError as e:
print("Error:",e.args[0],"\n",e,"\n")
print("Could not connect to the database server.\n")
except pyodbc.IntegrityError as e:
print("Error:",e.args[0],"\n",e,"\n")
print("Relational integrity of the target database is compromised.\n")
except pyodbc.InternalError as e:
print("Error:",e.args[0],"\n",e,"\n")
print("Cursor not valid or transaction out of sync.\n")
except pyodbc.ProgrammingError as e:
print("Error:",e.args[0],"\n",e,"\n")
print("Database not found, SQL Syntax error or wrong number of parameters.\n")
except pyodbc.NotSupportedError as e:
print("Error:",e.args[0],"\n",e,"\n")
print("Database does not support provided pyodbc request.\n")
except KeyboardInterrupt:
print("\nExiting program...")
sys.exit()
except pyodbc.Error as e:
sqlstate = e.args[0]
if sqlstate == '28000':
if unit_test == "false":
print("+----------------------------+")
print("| User Authentication failed |")
print("+----------------------------+\n")
#print("Authentication failed. Incorrect username or password.\n")
else:
print("Error:",e.args[0],"\n",e,"\n")
except Exception as e:
print(e)
except: print("User Authentication: Unknown error occured during connecting to the database.\n")
def InputHandler(userInput):
try:
if userInput[0] in commands.commands:
cmd = userInput[0]
try:
userInput.pop(0)
methodInspect = signature(commands.commands[cmd]["exec"])
if len(methodInspect.parameters) >= 1:
if cmd == "query":
userInput = ' '.join(userInput)
commands.commands[cmd]["exec"](userInput)
elif cmd == "da":
if userInput[0] == "usage":
allowed_params = {
"describe": "Print the dataframe.describe output",
"info": "Print the dataframe.info output",
"explode": "Print the dataframe.explode output based on the provided column name",
"hist": "Print the histogram of the dataframe",
"cols": "Print the dataframe columns",
"mean": "Print the dataframe.mean output",
"dtypes": "Print the dataframe.dtypes output",
"index": "Print the dataframe.index output",
"shape": "Print the dimensional shape of the dataframe",
"values": "Print the values in the dataframe",
"free": "Removes focus from the CSV file"
}
print("\nData Analysis command usage:\n---------------------------")
for k, v in allowed_params.items():
print(k,":",v)
print()
elif settings.global_config_array["sourceCsvFile"] != None:
commands.commands[cmd]["exec"]("", *userInput)
else:
commands.commands[cmd]["exec"](*userInput)
else:
commands.commands[cmd]["exec"](*userInput)
else:
commands.commands[cmd]["exec"]()
if cmd == "exit":
sys.exit()
elif cmd == "clear":
drawInitBoard()
print("\n" * 2)
elif cmd == "logout":
global success
success = False
drawInitBoard()
except IndexError:
commands.commands[cmd]["exec"]()
elif userInput[0] in commands.commands["aliases"]:
cmd = userInput[0]
try:
userInput.pop(0)
methodInspect = signature(commands.commands["aliases"][cmd]["exec"])
if len(methodInspect.parameters) >= 1:
commands.commands["aliases"][cmd]["exec"](*userInput)
else:
commands.commands["aliases"][cmd]["exec"]()
if cmd == "quit":
sys.exit()
elif cmd == "cls":
drawInitBoard()
print("\n" * 2)
except IndexError:
commands.commands["aliases"][cmd]["exec"]()
else:
print("Syntax error - " + userInput[0] + " command was not recognized.\n")
except KeyError as e:
print("Error:",e.args[0],"\n",e,"\n")
except AttributeError as e:
print("Error:",e.args[0],"\n",e,"\n")
except Exception as e:
print("Error:",e.args[0],"\n",e,"\n")
def MainActivity():
try:
userInput = list(map(str,input(settings.global_config_array["username"] + "@" + settings.global_config_array["user_sql_session"].getinfo(pyodbc.SQL_SERVER_NAME) + " $ ").split()))
InputHandler(userInput)
except KeyboardInterrupt:
print("\nExiting program...")
sys.exit()
# Startup execution
def Startup():
try:
settings.init()
print("\n" * 25)
drawInitBoard()
while True:
if settings.global_config_array["user_sql_session"] == None and success == False:
UserAuthentication()
elif settings.global_config_array["user_sql_session"] and success == True:
MainActivity()
except KeyboardInterrupt:
sys.exit()
except Exception as e: print("Error:",e.args[0],"\n",e,"\n")