def do_select(self, line):
"""
Select a data source
:param line: <String> Source name
:return: None
:Author: Zhiming Liu
"""
# Available data sources
options = "-csv", "-db"
args = list(arg.lower() for arg in str(line).split())
try:
# Check if the input data source is available in this program or not
if args[0] not in options:
raise ValueError("The data resource is not available.")
else:
# Code for initialise CSV data source
if args[0] == "-csv":
try:
if len(args) == 1:
self._std.select_source(args[0][1:],
"staffinfo.csv")
View.warning(
"No CSV file path specified. A default file \"staffinfo.csv\" will be used."
)
elif len(args) == 2:
self._std.select_source(args[0][1:], args[1])
elif len(args) == 3:
if args[1] == "-a":
self._std.select_source(
args[0][1:], args[2], True)
except (CSVError, OSError) as e:
View.error(e)
except Exception as e:
View.error(e)
else:
View.success("Data source CSV is selected.")
# Code for initialise database source
elif args[0] == "-db":
try:
self._std.select_source(args[0][1:])
except (ConnectionError, TypeError) as e:
View.error(e)
except Exception as e:
View.error(e)
else:
View.success("Data source Database is selected.")
# Code for initialise XXXX data source
else:
pass
# Catch and display error message
except ValueError as e:
View.error(str(e) + "\n")
View.help_select()
except Exception as e:
View.error(e)
def select_csv(self, cmd):
try:
if not cmd.is_valid_command:
View.error("Invalid command.")
View.help_select()
elif cmd.file_name is None:
self._std.select_source(cmd.resource_type,
cmd.default_csv_file)
View.warning("No CSV file path specified. "
"A default file \"{0}\" "
"will be used.".format(cmd.default_csv_file))
else:
self._std.select_source(cmd.resource_type, cmd.file_name,
cmd.create_file)
except Exception as e:
View.error(e)
else:
View.success("Data source CSV is selected.")
def help_select():
View.help_select()
def help_select():
View.display("Select a source of data for reading "
"and saving staff information.\n")
View.help_select()