pokedex/__init__.py

   1 # encoding: utf8
   2 import sys
   3
   4 from .db import connect, metadata
   5
   6 def main():
   7     if len(sys.argv) <= 1:
   8         help()
   9
  10     command = sys.argv[1]
  11     args = sys.argv[2:]
  12
  13     # Find the command as a function in this file
  14     func = globals().get(command, None)
  15     if func and callable(func) and command != 'main':
  16         func(*args)
  17     else:
  18         help()
  19
  20
  21 def csvimport(engine_uri, dir='.'):
  22     import csv
  23
  24     from sqlalchemy.orm.attributes import instrumentation_registry
  25
  26     session = connect(engine_uri)
  27
  28     metadata.create_all()
  29
  30     # This is a secret attribute on a secret singleton of a secret class that
  31     # appears to hopefully contain all registered classes as keys.
  32     # There is no other way to accomplish this, as far as I can tell.
  33     # Fuck.
  34     for table in sorted(instrumentation_registry.manager_finders.keys(),
  35                         key=lambda self: self.__table__.name):
  36         table_name = table.__table__.name
  37         print table_name
  38
  39         reader = csv.reader(open("%s/%s.csv" % (dir, table_name), 'rb'), lineterminator='\n')
  40         columns = [unicode(column) for column in reader.next()]
  41
  42         for csvs in reader:
  43             row = table()
  44
  45             for column, value in zip(columns, csvs):
  46                 value = value.decode('utf-8')
  47                 setattr(row, column, value)
  48
  49             session.add(row)
  50
  51         session.commit()
  52
  53
  54 def csvexport(engine_uri, dir='.'):
  55     import csv
  56     session = connect(engine_uri)
  57
  58     for table_name in sorted(metadata.tables.keys()):
  59         print table_name
  60         table = metadata.tables[table_name]
  61
  62         writer = csv.writer(open("%s/%s.csv" % (dir, table_name), 'wb'), lineterminator='\n')
  63         columns = [col.name for col in table.columns]
  64         writer.writerow(columns)
  65
  66         for row in session.query(table).all():
  67             csvs = []
  68             for col in columns:
  69                 # Convert Pythony values to something more universal
  70                 val = getattr(row, col)
  71                 if val == None:
  72                     val = ''
  73                 elif val == True:
  74                     val = '1'
  75                 elif val == False:
  76                     val = '0'
  77                 else:
  78                     val = unicode(val).encode('utf-8')
  79
  80                 csvs.append(val)
  81
  82             writer.writerow(csvs)
  83
  84
  85 def help():
  86     print u"""pokedex -- a command-line Pokédex interface
  87
  88     help                        Displays this message.
  89
  90   These commands are only useful for developers:
  91     csvimport {uri} [dir]       Import data from a set of CSVs to the database
  92                                   given by the URI.
  93     csvexport {uri} [dir]       Export data from the database given by the URI
  94                                   to a set of CSVs.
  95                                 Directory defaults to cwd.
  96 """
  97
  98     sys.exit(0)