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#!/usr/bin/python3
import math
from lib import *
MAP = {
'Control': 'CN',
'CR': 'CR',
'E_Base': 'EB',
'E_Base_GAZ': 'EBG',
'E_Modifier': 'EM',
'Extend': 'EX',
'Glue_After_Zwj': 'GAZ',
'LF': 'LF',
'L': 'L',
'LV': 'LV',
'LVT': 'LVT',
'Other': 'XX',
'Prepend': 'PP',
'Regional_Indicator': 'RI',
'SpacingMark': 'SM',
'T': 'T',
'V': 'V',
'ZWJ': 'ZWJ',
}
longest = 0
def parse(file: str) -> list[bool]:
global longest
xs = ['GCB_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 = 'GCB_' + 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/gcb; 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, longest + 1)
print(f'static constexpr enum uprop_gcb 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_gcb
uprop_get_gcb(rune ch)
{{
return stage2[stage1[ch / {blksize}]][ch % {blksize}];
}}''')
def main() -> None:
cwd_init()
xs = parse('data/GraphemeBreakProperty')
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 * 2
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_gcb.c', 'w') as f:
sys.stdout = f
genfile(Cs, blksize)
report_size(len(xs), smallest)
if __name__ == '__main__':
main()
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