/// <summary>
/// Creates a new FAR1Archive instance from a path.
/// </summary>
/// <param name="Path">The path to the archive.</param>
public FAR1Archive(string Path)
{
m_Path = Path;
m_Reader = new BinaryReader(File.Open(Path, FileMode.Open));
//Magic number - An 8-byte string (not null-terminated), consisting of the ASCII characters "FAR!byAZ"
string Header = Encoding.ASCII.GetString(m_Reader.ReadBytes(8));
//Version - A 4-byte unsigned integer specifying the version; 1a and 1b each specify 1.
uint Version = m_Reader.ReadUInt32();
if ((Header != "FAR!byAZ") || (Version != 1))
{
throw(new Exception("Archive wasn't a valid FAR V.1 archive!"));
}
//File table offset - A 4-byte unsigned integer specifying the offset to the file table
//from the beginning of the archive.
m_ManifestOffset = m_Reader.ReadUInt32();
m_Reader.BaseStream.Seek(m_ManifestOffset, SeekOrigin.Begin);
m_NumFiles = m_Reader.ReadUInt32();
for (int i = 0; i < m_NumFiles; i++)
{
FarEntry Entry = new FarEntry();
Entry.DataLength = m_Reader.ReadInt32();
Entry.DataLength2 = m_Reader.ReadInt32();
Entry.DataOffset = m_Reader.ReadInt32();
Entry.FilenameLength = m_Reader.ReadInt16();
Entry.Filename = Encoding.ASCII.GetString(m_Reader.ReadBytes(Entry.FilenameLength));
m_Entries.Add(Entry);
}
}
/// <summary>
/// Gets an entry's data from a FarEntry instance.
/// </summary>
/// <param name="Entry">A FarEntry instance.</param>
/// <returns>The entry's data.</returns>
public byte[] GetEntry(FarEntry Entry)
{
foreach (FarEntry Ent in m_Entries)
{
if (Ent.Filename == Entry.Filename)
{
m_Reader.BaseStream.Seek(Ent.DataOffset, SeekOrigin.Begin);
return m_Reader.ReadBytes(Ent.DataLength);
}
}
return null;
}
