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Scan the code range of the formatted portion

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This commit is contained in:
Nobuyoshi Nakada 2022-08-17 17:41:48 +09:00
parent 59da26789f
commit f34280ec6b
Notes: git 2022-08-19 03:06:19 +09:00
1 changed files with 11 additions and 3 deletions
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14
sprintf.c
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@ -1153,6 +1153,10 @@ ruby_vsprintf0(VALUE result, char *p, const char *fmt, va_list ap)
rb_printf_buffer_extra buffer;
#define f buffer.base
VALUE klass = RBASIC(result)->klass;
int coderange = ENC_CODERANGE(result);
long scanned = 0;
if (coderange != ENC_CODERANGE_UNKNOWN) scanned = p - RSTRING_PTR(result);
f._flags = __SWR | __SSTR;
f._bf._size = 0;
@ -1165,9 +1169,13 @@ ruby_vsprintf0(VALUE result, char *p, const char *fmt, va_list ap)
buffer.value = 0;
BSD_vfprintf(&f, fmt, ap);
RBASIC_SET_CLASS_RAW(result, klass);
// vfprintf mutates the string without updating coderange
ENC_CODERANGE_CLEAR(result);
rb_str_resize(result, (char *)f._p - RSTRING_PTR(result));
p = RSTRING_PTR(result);
long blen = (char *)f._p - p;
if (scanned < blen) {
rb_str_coderange_scan_restartable(p + scanned, p + blen, rb_enc_get(result), &coderange);
ENC_CODERANGE_SET(result, coderange);
}
rb_str_resize(result, blen);
#undef f
}