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#!/usr/bin/python3
import math
from lib import *
MAP = {
'ATerm': 'AT',
'Close': 'CL',
'CR': 'CR',
'Extend': 'EX',
'Format': 'FO',
'LF': 'LF',
'Lower': 'LO',
'Numeric': 'NU',
'OLetter': 'LE',
'Other': 'XX',
'SContinue': 'SC',
'Sep': 'SE',
'Sp': 'SP',
'STerm': 'ST',
'Upper': 'UP',
}
longest = 0
def parse(file: str) -> list[bool]:
global longest
xs = ['SB_XX'] * 0x110000
with open(file, 'r') as f:
for line in f.readlines():
if len(line.strip()) == 0 or line[0] == '#':
continue
parts = line.split(';')
ranges = [int(x, 16) for x in parts[0].strip().split('..')]
prop = 'SB_' + MAP[parts[1].split('#')[0].strip()]
longest = max(longest, len(prop))
for i in range(ranges[0], ranges[len(ranges) - 1] + 1):
xs[i] = prop
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/sb; 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 enum uprop_sb 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'''\
enum uprop_sb
uprop_get_sb(rune ch)
{{
return stage2[stage1[ch / {blksize}]][ch % {blksize}];
}}''')
def main() -> None:
cwd_init()
xs = parse('data/SentenceBreakProperty')
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_sb.c', 'w') as f:
sys.stdout = f
genfile(Cs, blksize)
report_size(len(xs), smallest)
if __name__ == '__main__':
main()
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