#region

using System.Runtime.InteropServices;
using System.Text;

#endregion

namespace CSFrameworkV5.Common
{
    /// <summary>
    ///     Converts file and directory paths to their respective
    ///     long and short name versions.
    ///     文件或目录的长文件名与短文件名互转换类
    /// </summary>
    /// <remarks>This class uses InteropServices to call GetLongPathName and GetShortPathName</remarks>
    public class ShellPathNameConvertNEW
    {
        [DllImport("kernel32.dll")]
        private static extern uint GetLongPathName(string shortname,
            StringBuilder
                longnamebuff, uint buffersize);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto)]
        public static extern int GetShortPathName(
            [MarshalAs(UnmanagedType.LPTStr)] string path,
            [MarshalAs(UnmanagedType.LPTStr)] StringBuilder shortPath,
            int shortPathLength);

        /// <summary>
        ///     The ToShortPathNameToLongPathName function retrieves the long path form of a specified short input path
        /// </summary>
        /// <param name="shortName">The short name path</param>
        /// <returns>A long name path string</returns>
        public static string ToLongPathName(string shortName)
        {
            var longNameBuffer = new StringBuilder(256);
            var bufferSize = (uint)longNameBuffer.Capacity;

            GetLongPathName(shortName, longNameBuffer, bufferSize);

            return longNameBuffer.ToStringEx();
        }

        /// <summary>
        ///     The ToLongPathNameToShortPathName function retrieves the short path form of a specified long input path
        /// </summary>
        /// <param name="longName">The long name path</param>
        /// <returns>A short name path string</returns>
        public static string ToShortPathName(string longName)
        {
            var shortNameBuffer = new StringBuilder(256);
            var bufferSize = shortNameBuffer.Capacity;

            var result =
                GetShortPathName(longName, shortNameBuffer, bufferSize);

            return shortNameBuffer.ToStringEx();
        }
    }
}