Mecab.cs

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

namespace MecabWrapper
{
    public class Mecab
    {
        [DllImport(@"C:\Program Files (x86)\MeCab\bin\libmecab64.dll", CallingConvention = CallingConvention.Cdecl)]
        private extern static IntPtr mecab_new2(string arg);
        [DllImport(@"C:\Program Files (x86)\MeCab\bin\libmecab64.dll", CallingConvention = CallingConvention.Cdecl)]
        //[return: MarshalAs(UnmanagedType.AnsiBStr)]
        //private extern static string mecab_sparse_tostr(IntPtr m, string str);
        private extern static IntPtr mecab_sparse_tostr(IntPtr m, string str);
        [DllImport(@"C:\Program Files (x86)\MeCab\bin\libmecab64.dll", CallingConvention = CallingConvention.Cdecl)]
        private extern static void mecab_destroy(IntPtr m);

        IntPtr mecabPos;
        IntPtr mecabWakati;

        public Mecab()
        {
            mecabPos = mecab_new2(@"--node-format=%M\t%f[0]\t%s\n");
            //mecabPos = mecab_new2(@"--node-format=%M\t%f[0],%f[1],%f[2],%f[3],%f[4],%f[5],%f[6]\t%s\n");
            mecabWakati = mecab_new2(@"-O wakati");
        }

        ~Mecab()
        {
            mecab_destroy(mecabPos);
            mecab_destroy(mecabWakati);
        }

        public List<string> Parse(string str, out List<string> pos, out List<int> oov)
        {
            List<string> result = new List<string>();
            pos = new List<string>();
            oov = new List<int>();

            try
            {
                string[] items = Marshal.PtrToStringAnsi(mecab_sparse_tostr(mecabPos, str)).Split('\n');

                foreach (string item in items)
                {
                    if (item.Equals("EOS"))
                    {
                        break;
                    }

                    string[] line = item.Split('\t');

                    result.Add(line[0]);
                    pos.Add(line[1]);
                    oov.Add(int.Parse(line[2]));
                }
            }
            catch (Exception e)
            {
                Console.Error.WriteLine(string.Format("Mecab.Parse[{0}]", str));
                Console.Error.WriteLine(e);
                Console.Error.WriteLine();

                result.Clear();
            }

            return result;
        }

        public string Parse(string str)
        {
            try
            {
                return Marshal.PtrToStringAnsi(mecab_sparse_tostr(mecabWakati, str)).Trim();
            }
            catch (Exception e)
            {
                Console.Error.WriteLine(string.Format("Mecab.Parse[{0}]", str));
                Console.Error.WriteLine(e);
                Console.Error.WriteLine();
            }

            return null;
        }
    }
}