MARKUS

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Text.RegularExpressions;

namespace KCOM

{

    public class RangeParser

    {

        //프린트 페이지 검색 키워드 변환

        public static IEnumerable<Int32> Parse(String s, Int32 firstPage, Int32 lastPage)

        {

            String[] parts = s.Split(' ', ';', ',');

            Regex reRange = new Regex(@"^\s*((?<from>\d+)|(?<from>\d+)(?<sep>(-|\.\.))(?<to>\d+)|(?<sep>(-|\.\.))(?<to>\d+)|(?<from>\d+)(?<sep>(-|\.\.)))\s*$");

            foreach (String part in parts)

            {

                Match maRange = reRange.Match(part);

                if (maRange.Success)

                {

                    Group gFrom = maRange.Groups["from"];

                    Group gTo = maRange.Groups["to"];

                    Group gSep = maRange.Groups["sep"];

                    if (gSep.Success)

                    {

                        Int32 from = firstPage;

                        Int32 to = lastPage;

                        if (gFrom.Success)

                            from = Int32.Parse(gFrom.Value);

                        if (gTo.Success)

                            to = Int32.Parse(gTo.Value);

                        for (Int32 page = from; page <= to; page++)

                            yield return page;

                    }

                    else

                        yield return Int32.Parse(gFrom.Value);

                }

            }

        }

    }

}