# Copyright NeMo (https://github.com/NVIDIA/NeMo). All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import pynini
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from fun_text_processing.text_normalization.zh.graph_utils import FUN_NOT_QUOTE, GraphFst, delete_space
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from fun_text_processing.text_normalization.zh.utils import UNIT_1e01, get_abs_path
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from pynini.lib import pynutil
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class Date(GraphFst):
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'''
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tokens { date { year: "2002" month: "01" day: "28"} } -> 二零零二年一月二十八日
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tokens { date { year: "2002" } } -> 二零零八年
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'''
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def __init__(self, deterministic: bool = True, lm: bool = False):
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super().__init__(name="date", kind="verbalize", deterministic=deterministic)
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date_type0 = pynutil.delete('year: \"') + pynini.closure(FUN_NOT_QUOTE) + pynutil.delete('\"')
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graph_digit = pynini.string_file(get_abs_path("data/number/digit.tsv"))
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graph_teen = pynini.string_file(get_abs_path("data/number/digit_teen.tsv"))
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graph_zero = pynini.string_file(get_abs_path("data/number/zero.tsv"))
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graph_no_zero = pynini.cross("0", "")
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graph_year = pynini.closure(graph_digit | graph_zero, 2, 4)
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graph_digit_no_zero = graph_digit | graph_no_zero
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graph_2_digit_date = (graph_teen + pynutil.insert(UNIT_1e01) + graph_digit_no_zero) | (
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graph_no_zero + graph_digit
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)
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date_type1 = (
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pynutil.delete("year: \"")
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+ graph_year
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+ pynutil.insert("年")
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+ pynutil.delete("\"")
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+ delete_space
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+ pynutil.delete("month: \"")
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+ graph_2_digit_date
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+ pynutil.insert("月")
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+ pynutil.delete("\"")
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+ delete_space
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+ pynutil.delete("day: \"")
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+ graph_2_digit_date
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+ pynutil.insert("日")
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+ pynutil.delete("\"")
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)
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date_type2 = (
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pynutil.delete("year: \"")
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+ graph_year
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+ pynutil.insert("年")
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+ pynutil.delete("\"")
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+ delete_space
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+ pynutil.delete("month: \"")
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+ graph_2_digit_date
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+ pynutil.insert("月")
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+ pynutil.delete("\"")
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)
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graph = date_type0 | date_type1 | date_type2
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self.fst = self.delete_tokens(graph).optimize()
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