/// <summary>
/// Decodes the available IFF chunks
/// </summary>
/// <param name="reader"></param>
internal void DecodeRootForm(DjvuReader reader)
{
RootForm = DjvuParser.GetRootForm(reader, null, this);
RootForm.Initialize(reader);
foreach (IDjvuNode chunk in RootForm.Children)
{
chunk.Initialize(reader);
}
}
public List <T> GetRootFormChildren <T>() where T : DjvuNode
{
if (RootForm.ChunkType == ChunkType.Djvu)
{
return(new List <T>(new T[] { RootForm as T }));
}
string id = typeof(T).Name.Replace("Chunk", null);
ChunkType chunkType = DjvuParser.GetChunkType(id);
return(RootForm.Children.Where <IDjvuNode>(x => x.ChunkType == chunkType)
.ToList <IDjvuNode>().ConvertAll <T>(x => (T)x));
}
public void ToStringTest()
{
IDjvuReader reader = null;
Mock <IDjvuReader> readerMock = new Mock <IDjvuReader>();
readerMock.Setup <long>(x => x.Position).Returns(1024);
reader = readerMock.Object;
IDjvuElement element = (IDjvuElement)DjvuParser.CreateDecodedDjvuNode(reader, null, null, ChunkType.Djvi, "DJVI", 127);
string result = element.ToString();
Assert.False(String.IsNullOrWhiteSpace(result));
Assert.Contains("ID: DJVI", result);
Assert.Contains("Name: Djvi", result);
Assert.Contains("Length: 127", result);
Assert.Contains("Offset: 1024", result);
Assert.Contains("Children: 0", result);
}
public void IsRootFormChildTest()
{
Assert.True(DjvuParser.IsRootFormChild(ChunkType.Dirm));
Assert.True(DjvuParser.IsRootFormChild(ChunkType.Djvi));
Assert.True(DjvuParser.IsRootFormChild(ChunkType.Djvu));
Assert.True(DjvuParser.IsRootFormChild(ChunkType.Navm));
Assert.True(DjvuParser.IsRootFormChild(ChunkType.Thum));
Assert.True(DjvuParser.IsRootFormChild(ChunkType.Form));
Assert.True(DjvuParser.IsRootFormChild(ChunkType.PM44, ChunkType.PM44Form));
Assert.True(DjvuParser.IsRootFormChild(ChunkType.BM44, ChunkType.BM44Form));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Djvm));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Anta));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Antz));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.BG44));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.BM44));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.BM44Form));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.PM44));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.PM44Form));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.BGjp));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Cida));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Djbz));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.FG44));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.FGbz));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.FGjp));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Incl));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Info));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Sjbz));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Smmr));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Text));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.TH44));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Txta));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Txtz));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Unknown));
Assert.False(DjvuParser.IsRootFormChild(ChunkType.Wmrm));
}
public void CreateDecodedDjvuNode_Theory(IDjvuReader reader, IDjvuDocument rootDocument,
IDjvuElement parent, ChunkType chunkType,
string chunkID = "", long length = 0)
{
if (reader == null)
{
Mock <IDjvuReader> readerMock = new Mock <IDjvuReader>();
readerMock.Setup <long>(x => x.Position).Returns(1024);
reader = readerMock.Object;
}
if (ChunkType.Info == chunkType)
{
length = 10;
}
IDjvuNode node = DjvuParser.CreateDecodedDjvuNode(reader, rootDocument, parent, chunkType, chunkID, length);
Assert.NotNull(node);
Assert.Equal <ChunkType>(chunkType, node.ChunkType);
Assert.Equal(chunkID, node.ChunkID);
Assert.Equal <long>(length, node.Length);
Assert.Equal <long>(reader.Position, node.DataOffset);
}
/// <summary>
/// Decodes the children of this chunk
/// </summary>
/// <param name="reader"></param>
public virtual void ReadChildren(IDjvuReader reader)
{
_TempChildren = new List <IDjvuNode>();
long maxPosition = this.Length + DataOffset;
// Jump to next FORM data "space" - it is skipped for root FORM
if (this != Document.RootForm)
{
reader.Position = DataOffset;
if (DjvuParser.IsFormChunk(ChunkType))
{
maxPosition -= 4;
}
}
// Read in all the chunks
while (true)
{
if (reader.Position % 2 == 1)
{
reader.Position++;
}
if (reader.Position >= maxPosition)
{
break;
}
// Read the chunk ID
string id = reader.ReadUTF8String(4);
ChunkType type = DjvuParser.GetChunkType(id);
long length = reader.ReadUInt32BigEndian();
bool isFormChunk = DjvuParser.IsFormChunk(type);
if (isFormChunk)
{
id = reader.ReadUTF8String(4);
type = DjvuParser.GetChunkType(id);
}
// Reset the stream position
// reader.Position -= 4;
var chunk = DjvuParser.CreateDecodedDjvuNode(reader, Document, this, type, id, length);
if (chunk != null)
{
if (!DjvuParser.IsRootFormChild(type))
{
_TempChildren.Add(chunk);
_TempChildren[_TempChildren.Count - 1].Initialize(reader);
reader.Position = chunk.Length + chunk.DataOffset;
}
else
{
Document.RootForm._TempChildren.Add(chunk);
reader.Position = chunk.Length + chunk.DataOffset;
if (isFormChunk)
{
reader.Position -= 4;
}
}
}
}
Children = _TempChildren;
_TempChildren = null;
}
