root/galaxy-central/eggs/sqlalchemy_migrate-0.5.4-py2.6.egg/migrate/versioning/template.py

リビジョン 3, 2.2 KB (コミッタ: kohda, 14 年 前)

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1#!/usr/bin/env python
2# -*- coding: utf-8 -*-
3
4import os
5import shutil
6import sys
7from pkg_resources import resource_filename
8
9from migrate.versioning.base import *
10from migrate.versioning import pathed
11
12
13class Packaged(pathed.Pathed):
14    """An object assoc'ed with a Python package"""
15
16    def __init__(self, pkg):
17        self.pkg = pkg
18        path = self._find_path(pkg)
19        super(Packaged, self).__init__(path)
20
21    @classmethod
22    def _find_path(cls, pkg):
23        pkg_name, resource_name = pkg.rsplit('.', 1)
24        ret = resource_filename(pkg_name, resource_name)
25        return ret
26
27class Collection(Packaged):
28    """A collection of templates of a specific type"""
29
30    _default = None
31
32    def get_path(self, file):
33        return os.path.join(self.path, str(file))
34
35    def get_pkg(self, file):
36        return (self.pkg, str(file))
37
38class RepositoryCollection(Collection):
39    _default = 'default'
40
41class ScriptCollection(Collection):
42    _default = 'default.py_tmpl'
43
44class Template(Packaged):
45    """Finds the paths/packages of various Migrate templates"""
46
47    _repository = 'repository'
48    _script = 'script'
49    _manage = 'manage.py_tmpl'
50
51    def __init__(self, pkg):
52        super(Template, self).__init__(pkg)
53        self.repository=RepositoryCollection('.'.join((self.pkg, self._repository)))
54        self.script=ScriptCollection('.'.join((self.pkg, self._script)))
55
56    def get_item(self, attr, filename=None, as_pkg=None, as_str=None):
57        item = getattr(self, attr)
58        if filename is None:
59            filename = getattr(item, '_default')
60        if as_pkg:
61            ret = item.get_pkg(filename)
62            if as_str:
63                ret = '.'.join(ret)
64        else:
65            ret = item.get_path(filename)
66        return ret
67
68    def get_repository(self, filename=None, as_pkg=None, as_str=None):
69        return self.get_item('repository', filename, as_pkg, as_str)
70   
71    def get_script(self, filename=None, as_pkg=None, as_str=None):
72        return self.get_item('script', filename, as_pkg, as_str)
73
74    def manage(self, **k):
75        return (self.pkg, self._manage)
76
77template_pkg = 'migrate.versioning.templates'
78template = Template(template_pkg)
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