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#!/usr/bin/python3
import math
from lib import *
longest = 0
def parse(file: str) -> list[bool]:
global longest
xs = ['0'] * 0x110000
with open(file, 'r') as f:
for line in f.readlines():
if len(line.strip()) == 0 or line[0] == '#':
continue
parts = line.split(';')
parts[14] = parts[14].strip()
if (
parts[14] == '' or
parts[12] == parts[14] or
parts[00] == parts[14]
):
continue
n = int(parts[0], 16)
xs[n] = f'RUNE_C(0x{parts[14]})'
longest = max(longest, len(xs[n]))
return xs
def genfile(cs: list[tuple[bool, ...]], blksize: int) -> None:
Cs = cs
cs = list(dict.fromkeys(Cs))
assert len(cs) == 2, f'{len(cs)=}, need a 2-stage lookup'
print('''\
/* This file is autogenerated by gen/prop/stc; DO NOT EDIT. */
#include <stdint.h>
#include "rune.h"
#include "unicode/prop.h"
''')
ppc = columns(blksize, longest + 1)
print(f'static constexpr rune lookup[][{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(' ' * (longest + 1 - len(c[i*ppc + j])), end='')
if i < blksize // ppc - 1:
print()
print('},')
print('};')
print()
print(f'''\
rune
uprop_get_stc(rune ch)
{{
rune hc = lookup[ch / {blksize} != 0][ch % {blksize}];
return hc == 0 ? uprop_get_suc(ch) : hc;
}}''')
def main() -> None:
cwd_init()
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 = set(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)]
with open('lib/unicode/prop/uprop_get_stc.c', 'w') as f:
sys.stdout = f
genfile(Cs, blksize)
report_size(len(xs), smallest)
if __name__ == '__main__':
main()
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