mirror of
https://github.com/veekun/pokedex.git
synced 2024-07-03 02:55:49 +00:00
d9a2d96ede
It used to abruptly abort if a csv file were missing, which wasn't very nice when I'd just added a new table definition and was trying to reload everything else. Now it prints a status per table while loading, and will declare missing tables to be... missing.
135 lines
4.2 KiB
Python
135 lines
4.2 KiB
Python
# encoding: utf8
|
|
import sys
|
|
|
|
import sqlalchemy.types
|
|
|
|
from .db import connect, metadata
|
|
|
|
def main():
|
|
if len(sys.argv) <= 1:
|
|
help()
|
|
|
|
command = sys.argv[1]
|
|
args = sys.argv[2:]
|
|
|
|
# Find the command as a function in this file
|
|
func = globals().get(command, None)
|
|
if func and callable(func) and command != 'main':
|
|
func(*args)
|
|
else:
|
|
help()
|
|
|
|
|
|
def csvimport(engine_uri, dir='.'):
|
|
import csv
|
|
|
|
from sqlalchemy.orm.attributes import instrumentation_registry
|
|
|
|
session = connect(engine_uri)
|
|
|
|
metadata.create_all()
|
|
|
|
# Oh, mysql-chan.
|
|
# TODO try to insert data in preorder so we don't need this hack and won't
|
|
# break similarly on other engines
|
|
if 'mysql' in engine_uri:
|
|
session.execute('SET FOREIGN_KEY_CHECKS = 0')
|
|
|
|
# This is a secret attribute on a secret singleton of a secret class that
|
|
# appears to hopefully contain all registered classes as keys.
|
|
# There is no other way to accomplish this, as far as I can tell.
|
|
# Fuck.
|
|
for table in sorted(instrumentation_registry.manager_finders.keys(),
|
|
key=lambda self: self.__table__.name):
|
|
table_name = table.__table__.name
|
|
# Print the table name but leave the cursor in a fixed column
|
|
print table_name + '...', ' ' * (40 - len(table_name)),
|
|
|
|
try:
|
|
csvfile = open("%s/%s.csv" % (dir, table_name), 'rb')
|
|
except IOError:
|
|
# File doesn't exist; don't load anything!
|
|
print 'no data!'
|
|
continue
|
|
|
|
reader = csv.reader(csvfile, lineterminator='\n')
|
|
column_names = [unicode(column) for column in reader.next()]
|
|
|
|
for csvs in reader:
|
|
row = table()
|
|
|
|
for column_name, value in zip(column_names, csvs):
|
|
column = table.__table__.c[column_name]
|
|
if column.nullable and value == '':
|
|
# Empty string in a nullable column really means NULL
|
|
value = None
|
|
elif isinstance(column.type, sqlalchemy.types.Boolean):
|
|
# Boolean values are stored as string values 0/1, but both
|
|
# of those evaluate as true; SQLA wants True/False
|
|
if value == '0':
|
|
value = False
|
|
else:
|
|
value = True
|
|
else:
|
|
# Otherwise, unflatten from bytes
|
|
value = value.decode('utf-8')
|
|
|
|
setattr(row, column_name, value)
|
|
|
|
session.add(row)
|
|
|
|
session.commit()
|
|
print 'loaded'
|
|
|
|
# Shouldn't matter since this is usually the end of the program and thus
|
|
# the connection too, but let's change this back just in case
|
|
if 'mysql' in engine_uri:
|
|
session.execute('SET FOREIGN_KEY_CHECKS = 1')
|
|
|
|
|
|
def csvexport(engine_uri, dir='.'):
|
|
import csv
|
|
session = connect(engine_uri)
|
|
|
|
for table_name in sorted(metadata.tables.keys()):
|
|
print table_name
|
|
table = metadata.tables[table_name]
|
|
|
|
writer = csv.writer(open("%s/%s.csv" % (dir, table_name), 'wb'), lineterminator='\n')
|
|
columns = [col.name for col in table.columns]
|
|
writer.writerow(columns)
|
|
|
|
for row in session.query(table).all():
|
|
csvs = []
|
|
for col in columns:
|
|
# Convert Pythony values to something more universal
|
|
val = getattr(row, col)
|
|
if val == None:
|
|
val = ''
|
|
elif val == True:
|
|
val = '1'
|
|
elif val == False:
|
|
val = '0'
|
|
else:
|
|
val = unicode(val).encode('utf-8')
|
|
|
|
csvs.append(val)
|
|
|
|
writer.writerow(csvs)
|
|
|
|
|
|
def help():
|
|
print u"""pokedex -- a command-line Pokédex interface
|
|
|
|
help Displays this message.
|
|
|
|
These commands are only useful for developers:
|
|
csvimport {uri} [dir] Import data from a set of CSVs to the database
|
|
given by the URI.
|
|
csvexport {uri} [dir] Export data from the database given by the URI
|
|
to a set of CSVs.
|
|
Directory defaults to cwd.
|
|
"""
|
|
|
|
sys.exit(0)
|