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+#!/usr/bin/env python
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+
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+__doc__ = """
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+Usage: decompose_tables.py [CONFIG_FILE_PATH]
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+
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+Use this script to normalize Roman map keys to use combining characters
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+(decomposed glyphs) vs. pre-composed glyphs.
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+
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+The script will create a new YAML file named according to the source.
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+E.g. `myscript.yml` → `myscript_norm.yml`.
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+
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+NOTE: Check the YAML syntax as issues with indentation have been detected.
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+Also, the original key order may be displaced, and whitespace and comments may
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+disappear.
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+"""
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+
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+from argparse import ArgumentParser
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+from os import path
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+from unicodedata import normalize
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+from yaml import load, dump
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+try:
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+ from yaml import CLoader as Loader
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+except ImportError:
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+ from yaml import Loader
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+
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+
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+parser = ArgumentParser()
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+parser.add_argument("src_fname")
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+args = parser.parse_args()
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+
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+dest_fname = path.splitext(args.src_fname)[0] + "_norm.yml"
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+with open(args.src_fname) as fh:
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+ data = load(fh, Loader=Loader)
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+
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+data["roman_to_script"]["map"] = {
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+ normalize("NFD", k): v
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+ for k, v in data["roman_to_script"]["map"].items()}
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+data["script_to_roman"]["map"] = {
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+ k: normalize("NFD", v)
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+ for k, v in data["script_to_roman"]["map"].items()}
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+
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+with open(dest_fname, "w") as fh:
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+ dump(data, fh, indent=2)
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+
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+print("Done.")
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