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Implement SaveInternal for CFL data format (only uncompressed for now)

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This commit is contained in:
Michael Becker 2014-10-03 23:26:14 -04:00
parent dbd9313196
commit d637484d0e
1 changed files with 58 additions and 2 deletions
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60
CSharp/Plugins/UniversalEditor.Plugins.FileSystem/DataFormats/FileSystem/CFL/CFLDataFormat.cs
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@ -38,9 +38,10 @@ namespace UniversalEditor.DataFormats.FileSystem.CFL
uint compressionType = reader.ReadUInt32();
uint directorySize = reader.ReadUInt32();
long directoryEnd = reader.Accessor.Position + directorySize;
if (directoryEnd > reader.Accessor.Length) throw new InvalidDataFormatException("Directory extends outside the bounds of the file (possible corruption)");
#region Directory Entry
while (reader.Accessor.Position != directoryEnd)
while (reader.Accessor.Position < directoryEnd)
{
uint fileSize = reader.ReadUInt32();
uint offset = reader.ReadUInt32();
@ -77,7 +78,62 @@ namespace UniversalEditor.DataFormats.FileSystem.CFL
protected override void SaveInternal(ObjectModel objectModel)
{
throw new NotImplementedException();
FileSystemObjectModel fsom = (objectModel as FileSystemObjectModel);
if (fsom == null) throw new ObjectModelNotSupportedException();
Writer writer = base.Accessor.Writer;
writer.WriteFixedLengthString("CFL3");
File[] files = fsom.GetAllFiles();
uint[] fileOffsets = new uint[files.Length];
uint initialDirectoryOffset = 12;
uint initialDirectoryDecompressedLength = 0;
for (int i = 0; i < files.Length; i++)
{
initialDirectoryDecompressedLength += (uint)(14 + files[i].Name.Length);
initialDirectoryOffset += (uint)(4 + files[i].Size);
}
uint initialDirectoryCompressedLength = initialDirectoryDecompressedLength;
writer.WriteUInt32(initialDirectoryOffset);
writer.WriteUInt32(initialDirectoryCompressedLength);
for (int i = 0; i < files.Length; i++)
{
fileOffsets[i] = (uint)writer.Accessor.Position;
byte[] decompressedData = files[i].GetDataAsByteArray();
byte[] compressedData = decompressedData;
uint compressedLength = (uint)compressedData.Length;
writer.WriteUInt32(compressedLength);
writer.WriteBytes(compressedData);
}
uint compressionType = 0;
writer.WriteUInt32(compressionType);
writer.WriteUInt32(initialDirectoryCompressedLength);
for (int i = 0; i < files.Length; i++)
{
uint fileSize = (uint)files[i].Size;
writer.WriteUInt32(fileSize);
uint offset = fileOffsets[i];
writer.WriteUInt32(offset);
uint compressionMethod = 0;
writer.WriteUInt32(compressionMethod);
writer.WriteUInt16String(files[i].Name);
}
uint offsetToEndOfFile = (uint)(writer.Accessor.Position + 8);
writer.WriteUInt32(offsetToEndOfFile);
string signatureFooter = "3CFL";
writer.WriteFixedLengthString(signatureFooter);
writer.Flush();
}
}
}