///////////////////////////////////////////////////////////////////////
// based loosely on perl's Set::Crontab parsing routine
private static void Expand(String str, CronSet set)
{
foreach (String part in str.Split(',')) {
Match match = CronPartRE.Match(part);
int step = 1;
if (match.Groups["s"].Success) {
String val = match.Groups["s"].Value;
step = int.Parse(val);
}
if (match.Groups["n"].Success) {
String val = match.Groups["n"].Value;
set[int.Parse(val)] = true;
} else if (match.Groups["m"].Value == "*") {
for (int idx = set._min; idx <= set._max; idx++) {
if (idx % step == 0) { set[idx] = true; }
}
} else if (match.Groups["r"].Success) {
int start = int.Parse(match.Groups["rb"].Value);
int stop = int.Parse(match.Groups["re"].Value);
for (int idx = start; idx <= stop; idx++) {
if (idx % step == 0) { set[idx] = true; }
}
}
}
}
///////////////////////////////////////////////////////////////////////
public static CronSet Parse(String str, int min, int max)
{
CronSet set = new CronSet(min, max);
Expand(str, set);
set._orig = str;
return set;
}