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#!/usr/bin/python3
import math
from lib import *
def parse(file: str) -> list[bool]:
xs = ['GC_CN'] * 0x110000
with open(file, 'r') as f:
for line in f.readlines():
parts = line.split(';')
parts[0] = int(parts[0], 16)
if 'First' in parts[1]:
lo = parts[0]
elif 'Last' in parts[1]:
hi = parts[0]
for i in range(lo, hi + 1):
xs[i] = f'GC_{parts[2].upper()}'
else:
xs[parts[0]] = f'GC_{parts[2].upper()}'
return xs
def genfile(cs: list[tuple[bool, ...]], blksize: int) -> None:
Cs = cs
cs = list(dict.fromkeys(Cs))
print('''\
/* This file is autogenerated by gen/prop/gc; DO NOT EDIT. */
#include "unicode/prop.h"
''')
print(f'static constexpr {typename(len(cs) - 1)} stage1[] = {{')
for i, c in enumerate(Cs):
print(f'%c%{len(str(len(cs) - 1))}d,' % ('\t' if i % 16 == 0 else ' ', cs.index(c)), end='')
if i % 16 == 15:
print()
print('};')
print()
ppc = columns(blksize)
print(f'static constexpr enum uprop_gc stage2[][{blksize}] = {{')
for c in cs:
for i in range(blksize // ppc):
print('\t{' if i == 0 else '\t ', end='')
for j in range(ppc):
print(c[i*ppc + j], end='')
if i < blksize // ppc - 1 or j < ppc - 1:
print(',', end='')
if j < ppc - 1:
print(' ', end='')
if i < blksize // ppc - 1:
print()
print('},')
print('};')
print()
print(f'''\
enum uprop_gc
uprop_get_gc(rune ch)
{{
return stage2[stage1[ch / {blksize}]][ch % {blksize}];
}}''')
def main() -> None:
cwd_init()
sys.stdout = open('lib/unicode/prop/uprop_get_gc.c', 'w')
xs = parse('data/UnicodeData')
blksize = -1
smallest = math.inf
for bs in powers_of_2():
if bs > len(xs):
break
Cs = [tuple(x) for x in chunks(xs, bs)]
cs = list(dict.fromkeys(Cs))
sz_s1 = len(Cs) * isize(len(cs) - 1)
sz_s2 = len(cs) * bs * 4
sz = sz_s1 + sz_s2
if sz < smallest:
smallest = sz
blksize = bs
Cs = [tuple(x) for x in chunks(xs, blksize)]
genfile(Cs, blksize)
if __name__ == '__main__':
main()
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