|
import pynini
|
from fun_text_processing.inverse_text_normalization.fr.graph_utils import (
|
DAMO_DIGIT,
|
GraphFst,
|
delete_extra_space,
|
delete_space,
|
)
|
from fun_text_processing.inverse_text_normalization.fr.utils import get_abs_path
|
from pynini.lib import pynutil
|
|
|
class TimeFst(GraphFst):
|
"""
|
Finite state transducer for verbalizing time, e.g.
|
time { hours: "8" minutes: "30" suffix: "du matin"} -> 8 h 30
|
time { hours: "8" minutes: "30" } -> 8 h 30
|
time { hours: "8" minutes: "30" suffix: "du soir"} -> 20 h 30
|
"""
|
|
def __init__(self):
|
super().__init__(name="time", kind="verbalize")
|
|
hour_to_night = pynini.string_file(get_abs_path("data/time/hour_to_night.tsv"))
|
|
day_suffixes = pynutil.delete("suffix: \"am\"")
|
night_suffixes = pynutil.delete("suffix: \"pm\"")
|
|
hour = (
|
pynutil.delete("hours:")
|
+ delete_space
|
+ pynutil.delete("\"")
|
+ pynini.closure(DAMO_DIGIT, 1, 2)
|
+ pynutil.delete("\"")
|
)
|
minute = (
|
pynutil.delete("minutes:")
|
+ delete_extra_space
|
+ pynutil.delete("\"")
|
+ pynini.closure(DAMO_DIGIT, 1, 2)
|
+ pynutil.delete("\"")
|
)
|
|
graph = hour + delete_extra_space + pynutil.insert("h") + minute.ques + delete_space + day_suffixes.ques
|
|
graph |= (
|
hour @ hour_to_night
|
+ delete_extra_space
|
+ pynutil.insert("h")
|
+ minute.ques
|
+ delete_space
|
+ night_suffixes
|
)
|
delete_tokens = self.delete_tokens(graph)
|
self.fst = delete_tokens.optimize()
|
