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import pynini
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from fun_text_processing.inverse_text_normalization.fr.graph_utils import (
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DAMO_NOT_QUOTE,
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GraphFst,
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delete_extra_space,
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delete_space,
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)
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from pynini.lib import pynutil
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class DateFst(GraphFst):
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"""
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Finite state transducer for verbalizing date, e.g.
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date { day: "1" month: "janvier" preserve_order: true } -> 1 de enero
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"""
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def __init__(self):
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super().__init__(name="date", kind="verbalize")
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convert_primer = pynini.cross('1', '1ᵉʳ')
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day = (
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pynutil.delete("day:")
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+ delete_space
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+ pynutil.delete("\"")
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+ (
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pynini.closure(DAMO_NOT_QUOTE, 1) | pynutil.add_weight(convert_primer, -1)
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) # first of the month is ordinal
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+ pynutil.delete("\"")
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)
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month = (
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pynutil.delete("month:")
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+ delete_space
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+ pynutil.delete("\"")
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+ pynini.closure(DAMO_NOT_QUOTE, 1)
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+ pynutil.delete("\"")
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)
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year = (
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pynutil.delete("year:")
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+ delete_space
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+ pynutil.delete("\"")
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+ pynini.closure(DAMO_NOT_QUOTE, 1)
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+ pynutil.delete("\"")
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)
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# day month
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graph_dm = day + delete_extra_space + month
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graph_dmy = graph_dm + delete_extra_space + year
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optional_preserve_order = pynini.closure(
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pynutil.delete("preserve_order:") + delete_space + pynutil.delete("true") + delete_space
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| pynutil.delete("field_order:")
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+ delete_space
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+ pynutil.delete("\"")
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+ DAMO_NOT_QUOTE
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+ pynutil.delete("\"")
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+ delete_space
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)
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final_graph = (graph_dm | graph_dmy) + delete_space + optional_preserve_order
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delete_tokens = self.delete_tokens(final_graph)
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self.fst = delete_tokens.optimize()
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