offset(p1)
public
Returns a two-element array containing the beginning and ending offsets of
the nth match. n can be a string or symbol to reference a named
capture.
m = /(.)(.)(\d+)(\d)/.match("THX1138.")
m.offset(0)
m.offset(4)
m = /(?<foo>.)(.)(?<bar>.)/.match("hoge")
p m.offset(:foo)
p m.offset(:bar)
Show source
static VALUE
match_offset(VALUE match, VALUE n)
{
int i = match_backref_number(match, n);
struct re_registers *regs = RMATCH_REGS(match);
match_check(match);
if (i < 0 || regs->num_regs <= i)
rb_raise(rb_eIndexError, "index %d out of matches", i);
if (BEG(i) < 0)
return rb_assoc_new(Qnil, Qnil);
update_char_offset(match);
return rb_assoc_new(INT2FIX(RMATCH(match)->rmatch->char_offset[i].beg),
INT2FIX(RMATCH(match)->rmatch->char_offset[i].end));
}