| 123456789101112131415161718192021222324252627282930313233343536373839 |
- import pynini
- from fun_text_processing.text_normalization.en.graph_utils import DAMO_ALPHA, DAMO_DIGIT, GraphFst, delete_space
- from pynini.lib import pynutil
- class TimeFst(GraphFst):
- """
- Finite state transducer for verbalizing time, e.g.
- time { hours: "8" minutes: "30" zone: "e s t" } -> 08:30 Uhr est
- time { hours: "8" } -> 8 Uhr
- time { hours: "8" minutes: "30" seconds: "10" } -> 08:30:10 Uhr
- """
- def __init__(self, deterministic: bool = True):
- super().__init__(name="time", kind="verbalize", deterministic=deterministic)
- add_leading_zero_to_double_digit = (DAMO_DIGIT + DAMO_DIGIT) | (pynutil.insert("0") + DAMO_DIGIT)
- hour = pynutil.delete("hours: \"") + pynini.closure(DAMO_DIGIT, 1) + pynutil.delete("\"")
- minute = pynutil.delete("minutes: \"") + pynini.closure(DAMO_DIGIT, 1) + pynutil.delete("\"")
- second = pynutil.delete("seconds: \"") + pynini.closure(DAMO_DIGIT, 1) + pynutil.delete("\"")
- zone = (
- pynutil.delete("zone: \"") + pynini.closure(DAMO_ALPHA + delete_space) + DAMO_ALPHA + pynutil.delete("\"")
- )
- optional_zone = pynini.closure(pynini.accep(" ") + zone, 0, 1)
- graph = (
- delete_space
- + pynutil.insert(":")
- + (minute @ add_leading_zero_to_double_digit)
- + pynini.closure(delete_space + pynutil.insert(":") + (second @ add_leading_zero_to_double_digit), 0, 1)
- + pynutil.insert(" Uhr")
- + optional_zone
- )
- graph_h = hour + pynutil.insert(" Uhr") + optional_zone
- graph_hm = hour @ add_leading_zero_to_double_digit + graph
- graph_hms = hour @ add_leading_zero_to_double_digit + graph
- final_graph = graph_hm | graph_hms | graph_h
- self.fst = self.delete_tokens(final_graph).optimize()
|
