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Feature #836 » strscan.diff

apeiros (Stefan Rusterholz), 12/08/2008 11:27 AM

View differences:

strscan.c 2008-12-08 03:18:47.000000000 +0100
}
/*
* call-seq: size
*
* Return the amount of subgroups in the most recent match.
* The full match counts as a subgroup.
*
* s = StringScanner.new("Fri Dec 12 1975 14:39")
* s.scan(/(\w+) (\w+) (\d+) /) # -> "Fri Dec 12 "
* s.size # -> 4
*/
static VALUE
strscan_size(VALUE self)
{
struct strscanner *p;
GET_SCANNER(self, p);
if (! MATCHED_P(p)) return Qnil;
return INT2FIX(p->regs.num_regs);
}
/*
* call-seq: size
*
* Returns the subgroups in the most recent match (not including the full match).
* If nothing was priorly matched, it returns nil.
*
* s = StringScanner.new("Fri Dec 12 1975 14:39")
* s.scan(/(\w+) (\w+) (\d+) /) # -> "Fri Dec 12 "
* s.captures # -> ["Fri", "Dec", "12"]
* s.scan(/(\w+) (\w+) (\d+) /) # -> nil
* s.captures # -> nil
*/
static VALUE
strscan_captures(VALUE self)
{
struct strscanner *p;
GET_SCANNER(self, p);
if (! MATCHED_P(p)) return Qnil;
int i;
int num_regs = p->regs.num_regs;
VALUE result = rb_ary_new2(num_regs);
for(i=1; i<num_regs; i++) {
rb_ary_push(
result,
extract_range(p, p->prev + p->regs.beg[i], p->prev + p->regs.end[i])
);
}
return result;
}
/*
* call-seq:
* scanner.values_at( i1, i2, ... iN ) -> an_array
*
* Returns the subgroups in the most recent match at the given indices.
* If nothing was priorly matched, it returns nil.
*
* s = StringScanner.new("Fri Dec 12 1975 14:39")
* s.scan(/(\w+) (\w+) (\d+) /) # -> "Fri Dec 12 "
* s.values_at 0, -1, 5, 2 # -> ["Fri Dec 12 ", "12", nil, "Dec"]
* s.scan(/(\w+) (\w+) (\d+) /) # -> nil
* s.captures # -> nil
*/
static VALUE
strscan_values_at(int argc, VALUE *argv, VALUE self)
{
struct strscanner *p;
GET_SCANNER(self, p);
if (! MATCHED_P(p)) return Qnil;
long i;
VALUE new_ary = rb_ary_new2(argc);
for (i=0; i<argc; i++) {
rb_ary_push(new_ary, strscan_aref(self, argv[i]));
}
return new_ary;
}
/*
* Return the <i><b>pre</b>-match</i> (in the regular expression sense) of the last scan.
*
* s = StringScanner.new('test string')
......
rb_define_method(StringScanner, "[]", strscan_aref, 1);
rb_define_method(StringScanner, "pre_match", strscan_pre_match, 0);
rb_define_method(StringScanner, "post_match", strscan_post_match, 0);
rb_define_method(StringScanner, "size", strscan_size, 0);
rb_define_method(StringScanner, "captures", strscan_captures, 0);
rb_define_method(StringScanner, "values_at", strscan_values_at, -1);
rb_define_method(StringScanner, "rest", strscan_rest, 0);
rb_define_method(StringScanner, "rest_size", strscan_rest_size, 0);
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