diff options
Diffstat (limited to 'io.c')
-rw-r--r-- | io.c | 28 |
1 files changed, 11 insertions, 17 deletions
@@ -4258,23 +4258,17 @@ rb_io_ungetbyte(VALUE io, VALUE b) GetOpenFile(io, fptr); rb_io_check_byte_readable(fptr); - if (NIL_P(b)) return Qnil; - if (FIXNUM_P(b)) { - int i = FIX2INT(b); - if (0 <= i && i <= UCHAR_MAX) { - unsigned char cc = i & 0xFF; - b = rb_str_new((const char *)&cc, 1); - } - else { - rb_raise(rb_eRangeError, - "integer %d too big to convert into `unsigned char'", i); - } - } - else if (RB_TYPE_P(b, T_BIGNUM)) { - rb_raise(rb_eRangeError, "bignum too big to convert into `unsigned char'"); - } - else { - SafeStringValue(b); + switch (TYPE(b)) { + case T_NIL: + return Qnil; + case T_FIXNUM: + case T_BIGNUM: ; + VALUE v = rb_int_modulo(b, INT2FIX(256)); + unsigned char c = NUM2INT(v) & 0xFF; + b = rb_str_new((const char *)&c, 1); + break; + default: + SafeStringValue(b); } io_ungetbyte(b, fptr); return Qnil; |