select(...)
public
Uses each index to access the matching values, returning an array
of the corresponding matches.
m = /(.)(.)(\d+)(\d)/.match("THX1138: The Movie")
m.to_a
m.select(0, 2, -2)
Show source
/*
* call-seq:
* mtch.select([index]*) => array
*
* Uses each <i>index</i> to access the matching values, returning an
* array of the corresponding matches.
*
* m = /(.)(.)(\d+)(\d)/.match("THX1138: The Movie")
* m.to_a
* m.select(0, 2, -2)
*/
static VALUE
match_select(argc, argv, match)
int argc;
VALUE *argv;
VALUE match;
{
if (argc > 0) {
rb_raise(rb_eArgError, "wrong number of arguments (%d for 0)", argc);
}
else {
struct re_registers *regs = RMATCH(match)->regs;
VALUE target = RMATCH(match)->str;
VALUE result = rb_ary_new();
int i;
int taint = OBJ_TAINTED(match);
for (i=0; i<regs->num_regs; i++) {
VALUE str = rb_str_substr(target, regs->beg[i], regs->end[i]-regs->beg[i]);
if (taint) OBJ_TAINT(str);
if (RTEST(rb_yield(str))) {
rb_ary_push(result, str);
}
}
return result;
}
}