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