Mercurial > hgrepos > Python > libs > ConfigMix
comparison configmix/variables.py @ 352:2b209bdf6995
Implement the "Empty" filter.
This is like the "None" filter but returning an empty string instead of None.
| author | Franz Glasner <f.glasner@feldmann-mg.com> |
|---|---|
| date | Thu, 24 Jun 2021 19:26:53 +0200 |
| parents | 83f76a41cf7c |
| children | dd454e1efea4 |
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| 351:efbf7ba40287 | 352:2b209bdf6995 |
|---|---|
| 253 | 253 |
| 254 """ | 254 """ |
| 255 return v | 255 return v |
| 256 | 256 |
| 257 | 257 |
| 258 @filter("Empty") | |
| 259 def Empty_filter_impl(config, v): | |
| 260 """Identity. | |
| 261 | |
| 262 The `Empty` filter is just a marker to not throw `KeyError` but return | |
| 263 the empty string. | |
| 264 | |
| 265 """ | |
| 266 return v | |
| 267 | |
| 268 | |
| 258 # Register the default namespaces | 269 # Register the default namespaces |
| 259 add_varns("ENV", _envlookup) | 270 add_varns("ENV", _envlookup) |
| 260 add_varns("OS", _oslookup) | 271 add_varns("OS", _oslookup) |
| 261 add_varns("PY", _pylookup) | 272 add_varns("PY", _pylookup) |
| 262 try: | 273 try: |