# Licensed under the Apache License, Version 2.0 (the "License");
|
# you may not use this file except in compliance with the License.
|
# You may obtain a copy of the License at
|
#
|
# http://www.apache.org/licenses/LICENSE-2.0
|
#
|
# Unless required by applicable law or agreed to in writing, software
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
# See the License for the specific language governing permissions and
|
# limitations under the License.
|
|
import pynini
|
from fun_text_processing.inverse_text_normalization.zh.graph_utils import DAMO_CHAR, DAMO_SIGMA, GraphFst, delete_space
|
from pynini.lib import pynutil
|
|
|
class WhiteListFst(GraphFst):
|
"""
|
Finite state transducer for verbalizing whitelist
|
e.g. tokens { name: "mrs." } -> mrs.
|
"""
|
|
def __init__(self):
|
super().__init__(name="whitelist", kind="verbalize")
|
graph = (
|
pynutil.delete("name:")
|
+ delete_space
|
+ pynutil.delete("\"")
|
+ pynini.closure(DAMO_CHAR - " ", 1)
|
+ pynutil.delete("\"")
|
)
|
graph = graph @ pynini.cdrewrite(pynini.cross(u"\u00A0", " "), "", "", DAMO_SIGMA)
|
self.fst = graph.optimize()
|
