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1#!/usr/bin/env python3
2# Copyright (C) 1998, 1999 Tom Tromey
3# Copyright (C) 2001 Red Hat Software
4#
5# This program is free software; you can redistribute it and/or modify
6# it under the terms of the GNU General Public License as published by
7# the Free Software Foundation; either version 2, or (at your option)
8# any later version.
9#
10# This program is distributed in the hope that it will be useful,
11# but WITHOUT ANY WARRANTY; without even the implied warranty of
12# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13# GNU General Public License for more details.
14#
15# You should have received a copy of the GNU General Public License
16# along with this program; if not, see <http://www.gnu.org/licenses/>.
17
18"""
19gen-casefold-txt.py - Generate test cases for casefolding from Unicode data.
20See http://www.unicode.org/Public/UNIDATA/UnicodeCharacterDatabase.html
21Usage:
22    I consider the output of this program to be unrestricted.
23    Use it as you will.
24"""
25
26import sys
27import argparse
28
29
30def main(argv):
31    parser = argparse.ArgumentParser(
32        description="Generate test cases for casefolding from Unicode data")
33    parser.add_argument("UNICODE-VERSION")
34    parser.add_argument("CaseFolding.txt")
35    args = parser.parse_args(argv[1:])
36    version = getattr(args, "UNICODE-VERSION")
37    filename = getattr(args, "CaseFolding.txt")
38
39    print("""\
40# Test cases generated from Unicode {} data
41# by gen-casefold-txt.py. Do not edit.
42#
43# Some special hand crafted tests
44#
45AaBbCc@@\taabbcc@@
46#
47# Now the automatic tests
48#""".format(version))
49
50    # Names of fields in the CaseFolding table
51    CODE, STATUS, MAPPING = range(3)
52
53    with open(filename, encoding="utf-8") as fileobj:
54        for line in fileobj:
55            # strip comments and skip empty lines
56            line = line.split("#", 1)[0].strip()
57            if not line:
58                continue
59
60            fields = [f.strip() for f in line.split(";", 3)[:3]]
61            if len(fields) != 3:
62                raise SystemExit(
63                    "Entry for %s has wrong number of fields (%d)" % (
64                        fields[CODE], len(fields)))
65
66            status = fields[STATUS]
67            # skip simple and Turkic mappings
68            if status in "ST":
69                continue
70
71            code = chr(int(fields[CODE], 16))
72            values = "".join(
73                [chr(int(v, 16)) for v in fields[MAPPING].split()])
74            print("{}\t{}".format(code, values))
75
76
77if __name__ == "__main__":
78    sys.exit(main(sys.argv))
79