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#! /usr/bin/env python3
from argparse import ArgumentParser
from fileinput import FileInput, hook_encoded
import re, itertools, sys
from math import log2
from math import log
def log2(x): return log(x) / log(2)
word = re.compile(r"(\S*?)(/|\s.*|$)")
unwanted = re.compile(r"(^\d|[^']*')")
space = re.compile(r'^\s')
p = ArgumentParser(description="create dictionary csv out of hunspell data")
p.add_argument('--hunspell', '-H', type=str, default="/usr/share/hunspell",
help='directory where hunspell dictionary files reside (default: /usr/share/hunspell)')
p.add_argument('--lang', '-l', type=str, default="en_US",
help='use dictionary for language LANG (default: en_US)')
p.add_argument('--encoding', '-e', type=str, default="utf-8",
help='file encoding (default: utf-8)')
p.add_argument('--full', '-f', action='store_true',
help="full list - don't reduce to 65536 words")
args = p.parse_args()
from icu import UnicodeString, Locale
except ImportError:
print("warning: PyICU not installed, using fallback", file=sys.stderr)
def upper(x):
return x.upper();
locale = Locale(args.lang)
def upper(x):
u = UnicodeString(x)
return str(u.toUpper(locale))
_all = (
for line in FileInput(
args.hunspell + "/" + args.lang + ".dic",
if not space.match(line)
_words = [w for w in _all if len(w) > 2 and not unwanted.match(w)]
_words = [w for w, g in itertools.groupby(_words)]
if not args.full:
while len(_words) > 65536 * 2:
_words = _words[::2]
if len(_words) > 65536:
if not args.full:
_words = _words[:65536]
elif len(_words) < 65536:
"warning for {}: only {:.2f} bit in wordlist, that makes {:.2f} bit for 5 words\n".format(
if not args.full:
assert len(_words) == 65536, "lenght is {}".format(len(_words))
for i, w in enumerate(_words):
print("{l},{i},{w},0".format(l=args.lang[:2], i=i, w=w))