/*

 * Please leave this Copyright notice in your code if you use it

 * Written by Decebal Mihailescu [http://www.codeproject.com/script/articles/list_articles.asp?userid=634640]

 */

namespace TextExtractors

{

    using System;

    using System.IO;

    using System.Text;

    using System.ComponentModel.Composition;

    using CommonUtils;



    [Export(typeof(ITextImport))]

    //[ExportMetadata("SpecialFormat", false)]

    [ExportMetadata("Description", "text files")]

    [ExportMetadata("FileExtension", "*.txt")]

    [ExportMetadata("ContextMenuText", "&Translate")]

    sealed class TxtFileReader : ITextImport

    {



        #region ITextImport Members



        public string GetAllTextFromFile(string fileName,out Encoding encoding)

        {

            if (string.IsNullOrEmpty(fileName))

            {

                throw new ArgumentException(null, "fileName");

            }

            if (!File.Exists(fileName))

            {

                throw new ArgumentException("File '" + fileName + "' is not found");

            }

            string str = string.Empty;

            try

            {

                var arg = new ProgressEventArgs();

                arg.Description = "Opening txt file";

                arg.Progress = 0;

                if (ProgressChanged != null && ProgressChanged.GetInvocationList().Length > 0)

                    ProgressChanged(this, arg);

                using (StreamReader reader = new StreamReader(fileName, true))//GetEncoding(0x4e3)))

                {

                    encoding = reader.CurrentEncoding;

                    return reader.ReadToEnd();

                }

            }

            catch (Exception exception)

            {

                throw new Exception("Error during text extraction from Text-file: " + fileName + Environment.NewLine + exception.Message);

            }

            //return str;

        }





        //public string FileDescription

        //{

        //    get { return "Txt files"; }

        //}



        //public string FileExtension

        //{

        //    get { return "*.txt"; }

        //}



        public event EventHandler ProgressChanged;



        #endregion

    }

}