NPOI/test/NPOI.OpenXmlFormats/XSSF/XSSFTestDataSamples.cs

/* ====================================================================
   Licensed to the Apache Software Foundation (ASF) under one or more
   contributor license agreements.  See the NOTICE file distributed with
   this work for Additional information regarding copyright ownership.
   The ASF licenses this file to You under the Apache License, Version 2.0
   (the "License"); you may not use this file except in compliance with
   the License.  You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

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   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
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using NPOI.OpenXml4Net.OPC;
using System;
using NPOI.XSSF.UserModel;
using System.IO;
using NPOI.SS.UserModel;
using NPOI.HSSF.UserModel;
using NPOI.Util;
using NPOI.HSSF;
using TestCases.HSSF;
using System.Diagnostics;
namespace NPOI.XSSF
{

    /**
     * Centralises logic for Finding/opening sample files in the src/testcases/org/apache/poi/hssf/hssf/data folder. 
     * 
     * @author Josh Micich
     */
    public class XSSFTestDataSamples
    {

        public static OPCPackage OpenSamplePackage(String sampleName)
        {
            return OPCPackage.Open(
                  HSSFTestDataSamples.OpenSampleFileStream(sampleName)
            );
        }
        public static XSSFWorkbook OpenSampleWorkbook(String sampleName)
        {
            Stream is1 = HSSFTestDataSamples.OpenSampleFileStream(sampleName);
            return new XSSFWorkbook(is1);

        }
        public static IWorkbook WriteOutAndReadBack(IWorkbook wb)
        {
            IWorkbook result;
            try
            {
                using (MemoryStream baos = new MemoryStream(8192))
                {
                    Stopwatch sw = new Stopwatch();
                    sw.Start();
                    wb.Write(baos);
                    sw.Stop();
                    Debug.WriteLine("XSSFWorkbook write time: " + sw.ElapsedMilliseconds + "ms");
                    using (Stream is1 = new MemoryStream(baos.ToArray()))
                    {
                        if (wb is HSSFWorkbook)
                        {
                            result = new HSSFWorkbook(is1);
                        }
                        else if (wb is XSSFWorkbook)
                        {
                            Stopwatch sw2 = new Stopwatch();
                            sw2.Start();
                            result = new XSSFWorkbook(is1);
                            sw2.Stop();
                            Debug.WriteLine("XSSFWorkbook parse time: " + sw2.ElapsedMilliseconds + "ms");
                        }
                        else
                        {
                            throw new RuntimeException("Unexpected workbook type ("
                                    + wb.GetType().Name + ")");
                        }
                    }
                }
            }
            catch (IOException e)
            {
                throw new RuntimeException(e);
            }
            return result;
        }

        /**
     * Writes the Workbook either into a file or into a byte array, depending on presence of 
     * the system property {@value #TEST_OUTPUT_DIR}, and reads it in a new instance of the Workbook back.
     * @param wb workbook to write
     * @param testName file name to be used if writing into a file. The old file with the same name will be overridden.
     * @return new instance read from the stream written by the wb parameter.
     */
        public static XSSFWorkbook WriteOutAndReadBack(XSSFWorkbook wb, String testName)
        {
            XSSFWorkbook result = null;


            try
            {
                string filename = Path.Combine(Environment.CurrentDirectory, testName + ".xlsx");

                if (File.Exists(filename))
                {
                    File.Delete(filename);
                }
                FileStream out1 = new FileStream(filename, FileMode.Create, FileAccess.ReadWrite);
                try
                {
                    wb.Write(out1);
                }
                finally
                {
                    out1.Close();
                }
                FileStream in1 = new FileStream(filename, FileMode.Open, FileAccess.Read);
                try
                {
                    result = new XSSFWorkbook(in1);
                }
                finally
                {
                    in1.Close();
                }
            }
            catch (IOException e)
            {
                throw new RuntimeException(e);
            }

            return result;
        }
    }

}