chore: import upstream snapshot with attribution

2026-07-13 13:25:10 +08:00
commit c397331b1e
3684 changed files with 990993 additions and 0 deletions
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+import pynini
+from fun_text_processing.text_normalization.en.graph_utils import (
+    DAMO_NOT_QUOTE,
+    GraphFst,
+    delete_preserve_order,
+)
+from pynini.lib import pynutil
+
+
+class MoneyFst(GraphFst):
+    """
+    Finite state transducer for verbalizing money, e.g.
+        money { currency_maj: "euro" integer_part: "ein"} -> "ein euro"
+        money { currency_maj: "euro" integer_part: "eins" fractional_part: "null null eins"} -> "eins komma null null eins euro"
+        money { integer_part: "ein" currency_maj: "pfund" fractional_part: "vierzig" preserve_order: true} -> "ein pfund vierzig"
+        money { integer_part: "ein" currency_maj: "pfund" fractional_part: "vierzig" currency_min: "pence" preserve_order: true} -> "ein pfund vierzig pence"
+        money { fractional_part: "ein" currency_min: "penny" preserve_order: true} -> "ein penny"
+        money { currency_maj: "pfund" integer_part: "null" fractional_part: "null eins" quantity: "million"} -> "null komma null eins million pfund"
+
+    Args:
+        decimal: GraphFst
+        deterministic: if True will provide a single transduction option,
+            for False multiple transduction are generated (used for audio-based normalization)
+    """
+
+    def __init__(self, decimal: GraphFst, deterministic: bool = True):
+        super().__init__(name="money", kind="verbalize", deterministic=deterministic)
+
+        keep_space = pynini.accep(" ")
+
+        maj = (
+            pynutil.delete('currency_maj: "')
+            + pynini.closure(DAMO_NOT_QUOTE, 1)
+            + pynutil.delete('"')
+        )
+        min = (
+            pynutil.delete('currency_min: "')
+            + pynini.closure(DAMO_NOT_QUOTE, 1)
+            + pynutil.delete('"')
+        )
+
+        fractional_part = (
+            pynutil.delete('fractional_part: "')
+            + pynini.closure(DAMO_NOT_QUOTE, 1)
+            + pynutil.delete('"')
+        )
+
+        integer_part = (
+            pynutil.delete('integer_part: "')
+            + pynini.closure(DAMO_NOT_QUOTE, 1)
+            + pynutil.delete('"')
+        )
+        optional_add_and = pynini.closure(pynutil.insert("und "), 0, 1)
+
+        #  *** currency_maj
+        graph_integer = integer_part + keep_space + maj
+
+        #  *** currency_maj + (***) | ((und) *** current_min)
+        graph_integer_with_minor = (
+            integer_part
+            + keep_space
+            + maj
+            + keep_space
+            + (fractional_part | (optional_add_and + fractional_part + keep_space + min))
+            + delete_preserve_order
+        )
+
+        # *** komma *** currency_maj
+        graph_decimal = decimal.fst + keep_space + maj
+
+        # *** current_min
+        graph_minor = fractional_part + keep_space + min + delete_preserve_order
+
+        graph = graph_integer | graph_integer_with_minor | graph_decimal | graph_minor
+
+        delete_tokens = self.delete_tokens(graph)
+        self.fst = delete_tokens.optimize()