sqlalchemy-migrate/migrate/versioning/template.py
David Ripton d6fbf12989 Eradicate trailing whitespace
Remove all trailing spaces and tabs in every file in the project.
People have editors configured to do this, which causes them to
accidentally make little whitespace changes in unrelated commits,
which makes those commits harder to review.  Better to fix them all
at once.

Change-Id: I17d89f55f41d8599e0ab1a31f646cd161289703e
2014-02-26 15:04:54 -05:00

94 lines
2.8 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
import shutil
import sys
from pkg_resources import resource_filename
from migrate.versioning.config import *
from migrate.versioning import pathed
class Collection(pathed.Pathed):
"""A collection of templates of a specific type"""
_mask = None
def get_path(self, file):
return os.path.join(self.path, str(file))
class RepositoryCollection(Collection):
_mask = '%s'
class ScriptCollection(Collection):
_mask = '%s.py_tmpl'
class ManageCollection(Collection):
_mask = '%s.py_tmpl'
class SQLScriptCollection(Collection):
_mask = '%s.py_tmpl'
class Template(pathed.Pathed):
"""Finds the paths/packages of various Migrate templates.
:param path: Templates are loaded from migrate package
if `path` is not provided.
"""
pkg = 'migrate.versioning.templates'
def __new__(cls, path=None):
if path is None:
path = cls._find_path(cls.pkg)
return super(Template, cls).__new__(cls, path)
def __init__(self, path=None):
if path is None:
path = Template._find_path(self.pkg)
super(Template, self).__init__(path)
self.repository = RepositoryCollection(os.path.join(path, 'repository'))
self.script = ScriptCollection(os.path.join(path, 'script'))
self.manage = ManageCollection(os.path.join(path, 'manage'))
self.sql_script = SQLScriptCollection(os.path.join(path, 'sql_script'))
@classmethod
def _find_path(cls, pkg):
"""Returns absolute path to dotted python package."""
tmp_pkg = pkg.rsplit('.', 1)
if len(tmp_pkg) != 1:
return resource_filename(tmp_pkg[0], tmp_pkg[1])
else:
return resource_filename(tmp_pkg[0], '')
def _get_item(self, collection, theme=None):
"""Locates and returns collection.
:param collection: name of collection to locate
:param type_: type of subfolder in collection (defaults to "_default")
:returns: (package, source)
:rtype: str, str
"""
item = getattr(self, collection)
theme_mask = getattr(item, '_mask')
theme = theme_mask % (theme or 'default')
return item.get_path(theme)
def get_repository(self, *a, **kw):
"""Calls self._get_item('repository', *a, **kw)"""
return self._get_item('repository', *a, **kw)
def get_script(self, *a, **kw):
"""Calls self._get_item('script', *a, **kw)"""
return self._get_item('script', *a, **kw)
def get_sql_script(self, *a, **kw):
"""Calls self._get_item('sql_script', *a, **kw)"""
return self._get_item('sql_script', *a, **kw)
def get_manage(self, *a, **kw):
"""Calls self._get_item('manage', *a, **kw)"""
return self._get_item('manage', *a, **kw)