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Implement grapheme seg algo in Go

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Kovid Goyal
2025-03-22 14:32:06 +05:30
parent 7e780a2294
commit aa8c32006f
4 changed files with 113 additions and 4 deletions
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8
gen/wcwidth.py
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@@ -675,8 +675,8 @@ def gen_multistage_table(
case 4:
ctype = 'uint32_t'
gotype = 'uint32'
c(f'static const unsigned {name}_mask = {mask}u;')
c(f'static const unsigned {name}_shift = {shift}u;')
c(f'static const char_type {name}_mask = {mask}u;')
c(f'static const char_type {name}_shift = {shift}u;')
c(f'static const {ctype} {name}_t1[{len(t1)}] = ''{')
c(f'\t{", ".join(map(str, t1))}')
c('};')
@@ -807,6 +807,10 @@ def gen_char_props() -> None:
generate_enum(c, gp, 'IndicConjunctBreak', 'None', *incb_map, prefix='ICB_')
bf = make_bitfield('tools/wcswidth', 'CharProps', *CharProps().go_fields, add_package=False)[1]
gp(bf)
gp(f'''
func (s CharProps) Width() int {{
return int(s.Shifted_width()) - {width_shift}
}}''')
gen_multistage_table(c, gp, t1, t2, shift, mask)
gofmt(gof.name)