using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace libxmltv
{
    public static class DateTimeStringConverter
    {
        private const string DEFAULT_DATE_FORMAT = "yyyy/MM/dd hh:mm tt";
        public static string ToDateTimeString(this DateTime dt)
        {
            return dt.ToDateTimeString(DateTimeStringConverter.DEFAULT_DATE_FORMAT);
        }
        public static string ToDateTimeString(this DateTime dt, IFormatProvider provider)
        {
            return dt.ToString(provider);
        }
        public static string ToDateTimeString(this DateTime dt, string format)
        {
            return dt.ToString(format);
        }
        public static string ToDateTimeString(this DateTime dt, string format, IFormatProvider provider)
        {
            return dt.ToString(format, provider);
        }
    }

    public static class extensions
    {
        /// <summary>
        /// Break a list of items into chunks of a specific size
        /// </summary>
        public static IEnumerable<IEnumerable<T>> Chunk<T>(this IEnumerable<T> source, int chunksize)
        {
            while (source.Any())
            {
                yield return source.Take(chunksize);
                source = source.Skip(chunksize);
            }
        }
    }
}