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
|
import os
import pkg_resources
from zope.component import getSiteManager
from zope.component import queryUtility
from repoze.bfg.interfaces import ITemplateRenderer
from repoze.bfg.compat import json
from repoze.bfg.settings import get_settings
from repoze.bfg.path import caller_package
# concrete renderer factory implementations
def json_renderer_factory(name):
def _render(value, system):
return json.dumps(value)
return _render
def string_renderer_factory(name):
def _render(value, system):
if not isinstance(value, basestring):
value = str(value)
return value
return _render
# utility functions
def template_renderer_factory(spec, impl):
if os.path.isabs(spec):
# 'spec' is an absolute filename
if not os.path.exists(spec):
raise ValueError('Missing template file: %s' % spec)
renderer = queryUtility(ITemplateRenderer, name=spec)
if renderer is None:
renderer = impl(spec)
sm = getSiteManager()
sm.registerUtility(renderer, ITemplateRenderer, name=spec)
else:
# spec is a package:relpath resource spec
renderer = queryUtility(ITemplateRenderer, name=spec)
if renderer is None:
# service unit tests by trying the relative path string as
# the utility name directly
renderer = queryUtility(ITemplateRenderer, name=spec)
if renderer is None:
try:
package_name, filename = spec.split(':', 1)
except ValueError:
# unit test or someone passing a relative pathname
package_name = caller_package(4).__name__
filename = spec
if not pkg_resources.resource_exists(package_name, filename):
raise ValueError('Missing template resource: %s' % spec)
abspath = pkg_resources.resource_filename(package_name, filename)
renderer = impl(abspath)
if not _reload_resources():
# cache the template
sm = getSiteManager()
sm.registerUtility(renderer, ITemplateRenderer, name=spec)
return renderer
def renderer_from_name(path):
from repoze.bfg.configuration import Configurator
reg = getSiteManager()
config = Configurator(reg)
return config.renderer_from_name(path)
def _reload_resources():
settings = get_settings()
return settings and settings.get('reload_resources')
|
