Mercurial > hgrepos > Python > libs > ConfigMix

comparison configmix/variables.py @ 106:b35837427a7a

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add an "add_varns()" function to add new namespaces for variables. Use the new function to register all builtin namespaces.
author Franz Glasner <hg@dom66.de>
date Sat, 24 Mar 2018 15:29:13 +0100
parents f6f2dc7cf053
children e2e8d21b4122
comparison
equal deleted inserted replaced
105:1c2f8a96dec2 106:b35837427a7a
57 raise KeyError("variable %r not found in namespace PY" % name) 57 raise KeyError("variable %r not found in namespace PY" % name)
58 else: 58 else:
59 return default 59 return default
60 60
61 61
62 _varns_registry = { 62 _varns_registry = {}
63 "ENV": _envlookup, 63 """Namespace registry"""
64 "OS": _oslookup, 64
65 "PY": _pylookup 65
66 } 66 def add_varns(name, fn):
67 """Register a new variable namespace `name` and it's implementing
68 function `fn`
69
70 """
71 _varns_registry[name] = fn
67 72
68 73
69 def lookup_varns(name): 74 def lookup_varns(name):
75 """Lookup the variable namespace `name` and return it's implementing
76 function
77
78 :param str name: the namespace name
79 :returns: the implementing function
80 :exception KeyError: if the namespace `name` doesn't exist
81
82 """
70 return _varns_registry[_normalized(name)] 83 return _varns_registry[_normalized(name)]
71 84
72 85
73 _filter_registry = {} 86 _filter_registry = {}
87 """Filter registry"""
74 88
75 89
76 def add_filter(name, fn): 90 def add_filter(name, fn):
77 """Register a variable filter with name `name` and implementation `fn` 91 """Register a variable filter function with name `name` and
92 implementation `fn`
78 93
79 """ 94 """
80 _filter_registry[_normalized(name)] = fn 95 _filter_registry[_normalized(name)] = fn
81 96
82 97
83 def lookup_filter(name): 98 def lookup_filter(name):
84 """Lookup a variable filter with name `name` and return it's implementation 99 """Lookup a variable filter with name `name` and return it's
85 function 100 implementation function
101
102 :param str name: the logical filter name
103 :returns: the implementing filter function
104 :exception KeyError: if the filter cannot be found
86 105
87 """ 106 """
88 return _filter_registry[_normalized(name)] 107 return _filter_registry[_normalized(name)]
89 108
90 109
181 200
182 @filter("upper") 201 @filter("upper")
183 def upper_impl(config, v): 202 def upper_impl(config, v):
184 """Implementation of the `upper` filter function""" 203 """Implementation of the `upper` filter function"""
185 return v.upper() 204 return v.upper()
205
206
207 # Register the default namespaces
208 add_varns("ENV", _envlookup)
209 add_varns("OS", _oslookup)
210 add_varns("PY", _pylookup)