/// <summary>
/// Initializes a new <see cref="FileEntry"/> instance using the supplied <see cref="ENTRY"/> object.
/// </summary>
/// <param name="entry">The entry object.</param>
internal FileEntry(ENTRY entry)
{
filename = string.Empty;
offset = (int)entry.Offset;
length = (int)entry.Length;
created = entry.Created.Ticks;
modified = entry.Modified.Ticks;
accessed = entry.Accessed.Ticks;
data = new byte[0];
}
/// <summary>
/// Saves this Abide Update package file to the specified stream.
/// </summary>
/// <param name="outStream">The stream where the package will be saved.</param>
/// <exception cref="ArgumentNullException"><paramref name="outStream"/> is null.</exception>
/// <exception cref="ArgumentException"><paramref name="outStream"/> does not support seeking.</exception>
/// <exception cref="AbideUpdatePackageException">A write error occured.</exception>
public void Save(Stream outStream)
{
//Setup Header
header.AupTag = AupFourCc;
header.EntryCount = (uint)fileEntries.Count;
//Prepare
ENTRY[] entries = new ENTRY[header.EntryCount];
byte[] data = null;
uint length = 0;
//Compress and copy data...
using (MemoryStream ms = new MemoryStream())
using (BinaryWriter writer = new BinaryWriter(ms))
{
//Loop through entries
for (int i = 0; i < header.EntryCount; i++)
{
//Get Data...
data = fileEntries[i].Data;
//Check...
if (data != null)
{
//Setup
entries[i] = new ENTRY();
entries[i].Length = (uint)data.Length;
entries[i].Offset = (uint)ms.Position;
entries[i].Created = fileEntries[i].Created;
entries[i].Modified = fileEntries[i].Modified;
entries[i].Accessed = fileEntries[i].Accessed;
//Write
writer.Write(data);
//Increment
length += (uint)data.Length;
}
else
{
throw new ArgumentNullException("data");
}
}
//Copy
data = new byte[length];
Array.Copy(ms.GetBuffer(), 0, data, 0, data.Length);
}
//Create Writer
using (BinaryWriter writer = new BinaryWriter(outStream))
{
//Goto entries start...
outStream.Seek(HEADER.RuntimeSize, SeekOrigin.Begin);
//Get File index offset...
header.FileIndexOffset = (uint)outStream.Seek(ENTRY.RuntimeSize * entries.Length, SeekOrigin.Current);
//Get File names offset...
header.FileNamesOffset = (uint)outStream.Seek(header.EntryCount * 4L, SeekOrigin.Current);
//Write File Names
foreach (string filename in fileEntries.Select(e => e.Filename))
{
writer.WriteUTF8NullTerminated(filename);
}
//Get Data Offset
header.DataOffset = (uint)outStream.Position;
//Write Files Index
int offset = 0;
outStream.Seek(header.FileIndexOffset, SeekOrigin.Begin);
foreach (string filename in fileEntries.Select(e => e.Filename))
{
writer.Write(offset); offset += filename.Length + 1;
}
//Setup File Length
header.Length = header.DataOffset + (uint)data.Length;
//Write Header
outStream.Seek(0, SeekOrigin.Begin);
writer.Write(header);
//Write Entries
foreach (ENTRY entry in entries)
{
writer.Write(entry);
}
//Write Data
outStream.Seek(header.DataOffset, SeekOrigin.Begin);
writer.Write(data);
}
}