Tutorial: copy from FEM to SIN to SIF

A tutorial which demonstrates copying all data from a FEM file to a SIN file, and then exporting the file to SIF format.

First create a folder in which temporary data for the reader will be stored

var dirName = Guid.NewGuid().ToString();
System.IO.Directory.CreateDirectory(dirName);

Create a reader instance with a random filename. We use a using statement so that Dispose is called when the instance goes out of scope.

using (var reader = SesamDataFactory.CreateReader(dirName, "T1.FEM"))
{

Invoke CreateModel in order to establish the indexation data necessary to access the file content.

int diagnostic = reader.CreateModel();

Create a writer instance. We use a using statement so that Dispose is called when the instance goes out of scope.

var randomFileNameSIN = Guid.NewGuid().ToString() + ".SIN";
using (var writer = SesamDataFactory.CreateWriter(randomFileNameSIN))
{

Use the Toc to loop over all datatypes present on the FEM-file. We establish all corresponding pointer tables on the SIN-file.

foreach (var datatype in reader.GetToc())
{
    writer.CreateTab(datatype.Key, datatype.Value.AllIndices.Select(item => (long)item).ToArray(), datatype.Value.Count);
}

Use the Toc to loop over all datatypes present on the FEM-file. We read all data in arrays of 10, and write the same data to the SIN-file.

int blockSize = 10;

foreach (var datatype in reader.GetToc())
{
    
    reader.SetFirstTimeReadAll(datatype.Key);
    while (true)
    {
        List<ISifData> data = reader.ReadAll(datatype.Key, blockSize, out var noMoreData);
        writer.WriteData(datatype.Key, data);
        if (noMoreData)
        {
            break;
        }
    }
}

Export the SIN-file to a SIF-file

var randomFileNameSIF = Guid.NewGuid().ToString() + ".SIF";
writer.WriteSifFile(randomFileNameSIF);

When the writer and reader instances goe out of scope the file and directory are unlocked and may be deleted if desired.

    }
    System.IO.File.Delete(randomFileNameSIN);
}

System.IO.Directory.Delete(dirName, true);

The complete example (in the form of a nUnit unit test) as follows.

using System;
using System.Collections.Generic;
using System.Linq;
using DNV.Sesam.SifApi.Core;
using NUnit.Framework;

namespace DNV.Sesam.SifApi.IO.Doc
{
    public partial class Tutorials
    {
        [Test]
        public void CopyFEMtoSINtoSIF()
        {
            var dirName = Guid.NewGuid().ToString();
            System.IO.Directory.CreateDirectory(dirName);

            using (var reader = SesamDataFactory.CreateReader(dirName, "T1.FEM"))
            {
                int diagnostic = reader.CreateModel();
                Assert.AreEqual(0, diagnostic);

                var randomFileNameSIN = Guid.NewGuid().ToString() + ".SIN";
                using (var writer = SesamDataFactory.CreateWriter(randomFileNameSIN))
                {
                    foreach (var datatype in reader.GetToc())
                    {
                        writer.CreateTab(datatype.Key, datatype.Value.AllIndices.Select(item => (long)item).ToArray(), datatype.Value.Count);
                    }

                    int blockSize = 10;
                    
                    foreach (var datatype in reader.GetToc())
                    {
                        
                        reader.SetFirstTimeReadAll(datatype.Key);
                        while (true)
                        {
                            List<ISifData> data = reader.ReadAll(datatype.Key, blockSize, out var noMoreData);
                            writer.WriteData(datatype.Key, data);
                            if (noMoreData)
                            {
                                break;
                            }
                        }
                    }

                    var randomFileNameSIF = Guid.NewGuid().ToString() + ".SIF";
                    writer.WriteSifFile(randomFileNameSIF);

                    Assert.IsTrue(System.IO.File.Exists(randomFileNameSIF));
                    System.IO.File.Delete(randomFileNameSIF);
                }
                System.IO.File.Delete(randomFileNameSIN);
            }
            
            System.IO.Directory.Delete(dirName, true);
        }

    }
}