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Add LexiconModel.by()

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This commit is contained in:
Tim Van Baak 2020-01-18 17:14:51 -08:00
parent f79e5bfd87
commit 45f2cbd344
1 changed files with 24 additions and 2 deletions
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26
amanuensis/lexicon/__init__.py
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@ -1,11 +1,33 @@
import os
import time
from errors import InternalMisuseError, IndexMismatchError, MissingConfigError
import config
class LexiconModel():
"""
"""
def by(lid=None, name=None):
"""
Gets the LexiconModel with the given lid or username
If the lid or name simply does not match an existing lexicon, returns
None. If the lid matches the index but there is something wrong with
the lexicon's config, raises an error.
"""
if lid and name:
raise InternalMisuseError("lid and name both specified to LexiconModel.by()")
if not lid and not name:
raise ValueError("One of lid or name must be not None")
if not lid:
with config.json_ro('lexicon', 'index.json') as index:
lid = index.get(name)
if not lid:
return None
if not os.path.isdir(config.prepend('lexicon', lid)):
raise IndexMismatchError("lexicon={} lid={}".format(name, lid))
if not os.path.isfile(config.prepend('lexicon', lid, 'config.json')):
raise MissingConfigError("lid={}".format(lid))
return LexiconModel(lid)
def __init__(self, lid):
if not os.path.isdir(config.prepend('lexicon', lid)):
raise ValueError("No lexicon with lid {}".format(lid))