public void HeaderHasLengthOfItemStart()
{
var ms = new MemoryStream();
var desc = new TeaFileDescription();
desc.ContentDescription = "a";
var wc = HeaderManager.Instance.WriteHeader(new FormattedWriter(new FileIO(ms)), desc);
ms.Length.Should().Be(wc.ItemAreaStart);
ms.Position.Should().Be(wc.ItemAreaStart);
(ms.Position % 8).Should().Be(0);
}
public void HeaderHasLengthOfItemStart()
{
var ms = new MemoryStream();
var desc = new TeaFileDescription();
desc.ContentDescription = "a";
var wc = HeaderManager.Instance.WriteHeader(new FormattedWriter(new FileIO(ms)), desc);
ms.Length.Should().Be(wc.ItemAreaStart);
ms.Position.Should().Be(wc.ItemAreaStart);
(ms.Position % 8).Should().Be(0);
}
public void HeaderWithContentDescription()
{
var ms = new MemoryStream();
var desc = new TeaFileDescription();
desc.ContentDescription = "a";
var wc = HeaderManager.Instance.WriteHeader(new FormattedWriter(new FileIO(ms)), desc);
ms.Length.Should().Be.GreaterThan(4 * 8);
ms.Position.Should().Be(wc.ItemAreaStart);
(ms.Position % 8).Should().Be(0);
ms.Position = 0;
var rc = HeaderManager.Instance.ReadHeader(new FormattedReader(new FileIO(ms)));
rc.Should().Not.Be.Null();
rc.ItemAreaStart.Should().Be.GreaterThan(32);
rc.ItemAreaEnd.Should().Be(0);
rc.SectionCount.Should().Be(1);
ms.Position.Should().Be(ms.Length);
ms.Position.Should().Be(rc.ItemAreaStart);
(ms.Position % 8).Should().Be(0);
}
public WriteContext WriteHeader(IFormattedWriter w, TeaFileDescription description)
{
var wc = new WriteContext(w);
wc.ItemAreaStart = 32; // if no sections are created, ItemArea will start at 32. This value will change is sections are created
wc.Description = description;
byte[] sections = this.CreateSections(wc);
w.WriteInt64(0x0d0e0a0402080500);
w.WriteInt64(wc.ItemAreaStart);
w.WriteInt64(0);
w.WriteInt64(wc.SectionCount);
wc.Writer.WriteRaw(sections);
//var sectionPadding = wc.ItemAreaStart - w.Position;
//if (sectionPadding < 0) throw new FileFormatException("Stream position (potentially after writing sections) is behind item start. After opening a TeaFile and reading the header, the file pointer must be exactly at the begin of the item area.");
//w.WriteZeroBytes((int) sectionPadding);
return wc;
}
public WriteContext WriteHeader(IFormattedWriter w, TeaFileDescription description)
{
var wc = new WriteContext(w);
wc.ItemAreaStart = 32; // if no sections are created, ItemArea will start at 32. This value will change is sections are created
wc.Description = description;
byte[] sections = this.CreateSections(wc);
w.WriteInt64(0x0d0e0a0402080500);
w.WriteInt64(wc.ItemAreaStart);
w.WriteInt64(0);
w.WriteInt64(wc.SectionCount);
wc.Writer.WriteRaw(sections);
//var sectionPadding = wc.ItemAreaStart - w.Position;
//if (sectionPadding < 0) throw new FileFormatException("Stream position (potentially after writing sections) is behind item start. After opening a TeaFile and reading the header, the file pointer must be exactly at the begin of the item area.");
//w.WriteZeroBytes((int) sectionPadding);
return(wc);
}
public void HeaderWithContentDescription()
{
var ms = new MemoryStream();
var desc = new TeaFileDescription();
desc.ContentDescription = "a";
var wc = HeaderManager.Instance.WriteHeader(new FormattedWriter(new FileIO(ms)), desc);
ms.Length.Should().Be.GreaterThan(4 * 8);
ms.Position.Should().Be(wc.ItemAreaStart);
(ms.Position % 8).Should().Be(0);
ms.Position = 0;
var rc = HeaderManager.Instance.ReadHeader(new FormattedReader(new FileIO(ms)));
rc.Should().Not.Be.Null();
rc.ItemAreaStart.Should().Be.GreaterThan(32);
rc.ItemAreaEnd.Should().Be(0);
rc.SectionCount.Should().Be(1);
ms.Position.Should().Be(ms.Length);
ms.Position.Should().Be(rc.ItemAreaStart);
(ms.Position % 8).Should().Be(0);
}
