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#!/usr/bin/python3
import math
import subprocess
from lib import *
longest = 2 # ‘-1’
def parse() -> list[int]:
xs = [None] * 0x110000
p = subprocess.Popen(
['./gen/prop/wdth.c'],
stdout=subprocess.PIPE,
shell=True,
)
for line in p.stdout:
parts = line.decode().strip().split(' ')
if len(parts[1]) == 1:
parts[1] = ' ' + parts[1]
xs[int(parts[0], 16)] = parts[1]
return xs
def genfile(cs: list[tuple[int, ...]], blksize: int) -> None:
Cs = cs
cs = list(dict.fromkeys(Cs))
print('''\
/* This file is autogenerated by gen/prop/wdth; DO NOT EDIT. */
#include <stdint.h>
#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, longest + 1)
print(f'static constexpr int8_t 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(' ' * (longest + 1 - len(c[i*ppc + j])), end='')
if i < blksize // ppc - 1:
print()
print('},')
print('};')
print()
print(f'''\
int
uprop_get_wdth(rune ch)
{{
return stage2[stage1[ch / {blksize}]][ch % {blksize}];
}}''')
def main() -> None:
cwd_init()
xs = parse()
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
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_wdth.c', 'w') as f:
sys.stdout = f
genfile(Cs, blksize)
report_size(len(xs), smallest)
if __name__ == '__main__':
main()
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