/usr/lib/python3/dist-packages/pwiz.py is in python3-peewee 2.10.2+dfsg-2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 | #!/usr/bin/env python
import datetime
import sys
from getpass import getpass
from optparse import OptionParser
from peewee import *
from peewee import print_
from peewee import __version__ as peewee_version
from playhouse.reflection import *
TEMPLATE = """from peewee import *%s
database = %s('%s', **%s)
class UnknownField(object):
def __init__(self, *_, **__): pass
class BaseModel(Model):
class Meta:
database = database
"""
DATABASE_ALIASES = {
MySQLDatabase: ['mysql', 'mysqldb'],
PostgresqlDatabase: ['postgres', 'postgresql'],
SqliteDatabase: ['sqlite', 'sqlite3'],
}
DATABASE_MAP = dict((value, key)
for key in DATABASE_ALIASES
for value in DATABASE_ALIASES[key])
def make_introspector(database_type, database_name, **kwargs):
if database_type not in DATABASE_MAP:
err('Unrecognized database, must be one of: %s' %
', '.join(DATABASE_MAP.keys()))
sys.exit(1)
schema = kwargs.pop('schema', None)
DatabaseClass = DATABASE_MAP[database_type]
db = DatabaseClass(database_name, **kwargs)
return Introspector.from_database(db, schema=schema)
def print_models(introspector, tables=None, preserve_order=False):
database = introspector.introspect(table_names=tables)
print_(TEMPLATE % (
introspector.get_additional_imports(),
introspector.get_database_class().__name__,
introspector.get_database_name(),
repr(introspector.get_database_kwargs())))
def _print_table(table, seen, accum=None):
accum = accum or []
foreign_keys = database.foreign_keys[table]
for foreign_key in foreign_keys:
dest = foreign_key.dest_table
# In the event the destination table has already been pushed
# for printing, then we have a reference cycle.
if dest in accum and table not in accum:
print_('# Possible reference cycle: %s' % dest)
# If this is not a self-referential foreign key, and we have
# not already processed the destination table, do so now.
if dest not in seen and dest not in accum:
seen.add(dest)
if dest != table:
_print_table(dest, seen, accum + [table])
print_('class %s(BaseModel):' % database.model_names[table])
columns = database.columns[table].items()
if not preserve_order:
columns = sorted(columns)
primary_keys = database.primary_keys[table]
for name, column in columns:
skip = all([
name in primary_keys,
name == 'id',
len(primary_keys) == 1,
column.field_class in introspector.pk_classes])
if skip:
continue
if column.primary_key and len(primary_keys) > 1:
# If we have a CompositeKey, then we do not want to explicitly
# mark the columns as being primary keys.
column.primary_key = False
print_(' %s' % column.get_field())
print_('')
print_(' class Meta:')
print_(' db_table = \'%s\'' % table)
multi_column_indexes = database.multi_column_indexes(table)
if multi_column_indexes:
print_(' indexes = (')
for fields, unique in sorted(multi_column_indexes):
print_(' ((%s), %s),' % (
', '.join("'%s'" % field for field in fields),
unique,
))
print_(' )')
if introspector.schema:
print_(' schema = \'%s\'' % introspector.schema)
if len(primary_keys) > 1:
pk_field_names = sorted([
field.name for col, field in columns
if col in primary_keys])
pk_list = ', '.join("'%s'" % pk for pk in pk_field_names)
print_(' primary_key = CompositeKey(%s)' % pk_list)
elif not primary_keys:
print_(' primary_key = False')
print_('')
seen.add(table)
seen = set()
for table in sorted(database.model_names.keys()):
if table not in seen:
if not tables or table in tables:
_print_table(table, seen)
def print_header(cmd_line, introspector):
timestamp = datetime.datetime.now()
print_('# Code generated by:')
print_('# python -m pwiz %s' % cmd_line)
print_('# Date: %s' % timestamp.strftime('%B %d, %Y %I:%M%p'))
print_('# Database: %s' % introspector.get_database_name())
print_('# Peewee version: %s' % peewee_version)
print_('')
def err(msg):
sys.stderr.write('\033[91m%s\033[0m\n' % msg)
sys.stderr.flush()
def get_option_parser():
parser = OptionParser(usage='usage: %prog [options] database_name')
ao = parser.add_option
ao('-H', '--host', dest='host')
ao('-p', '--port', dest='port', type='int')
ao('-u', '--user', dest='user')
ao('-P', '--password', dest='password', action='store_true')
engines = sorted(DATABASE_MAP)
ao('-e', '--engine', dest='engine', default='postgresql', choices=engines,
help=('Database type, e.g. sqlite, mysql or postgresql. Default '
'is "postgresql".'))
ao('-s', '--schema', dest='schema')
ao('-t', '--tables', dest='tables',
help=('Only generate the specified tables. Multiple table names should '
'be separated by commas.'))
ao('-i', '--info', dest='info', action='store_true',
help=('Add database information and other metadata to top of the '
'generated file.'))
ao('-o', '--preserve-order', action='store_true', dest='preserve_order',
help='Model definition column ordering matches source table.')
return parser
def get_connect_kwargs(options):
ops = ('host', 'port', 'user', 'schema')
kwargs = dict((o, getattr(options, o)) for o in ops if getattr(options, o))
if options.password:
kwargs['password'] = getpass()
return kwargs
if __name__ == '__main__':
raw_argv = sys.argv
parser = get_option_parser()
options, args = parser.parse_args()
if options.preserve_order:
try:
from collections import OrderedDict
except ImportError:
err('Preserve order requires Python >= 2.7.')
sys.exit(1)
if len(args) < 1:
err('Missing required parameter "database"')
parser.print_help()
sys.exit(1)
connect = get_connect_kwargs(options)
database = args[-1]
tables = None
if options.tables:
tables = [table.strip() for table in options.tables.split(',')
if table.strip()]
introspector = make_introspector(options.engine, database, **connect)
if options.info:
cmd_line = ' '.join(raw_argv[1:])
print_header(cmd_line, introspector)
print_models(introspector, tables, preserve_order=options.preserve_order)
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