/// <summary>
/// Creates the relative path of an entry in the sfp file.
/// </summary>
/// <param name="entries">Sfp entries indexed by offset.</param>
/// <param name="nameTable">Sfp file name table indexed by offset.</param>
/// <param name="offset">Sfp entry offset.</param>
/// <returns>Relative path of sfp entry.</returns>
private static String BuildPath(IReadOnlyDictionary <Int64, SfpEntry> entries, IReadOnlyDictionary <Int64, String> nameTable, Int64 offset)
{
SfpEntry entry = entries[offset];
String path = "";
do
{
if (entry.NameOffset != 0)
{
path = $"{nameTable[entry.NameOffset]}{path}";
}
offset = entry.ParentOffset;
entry = entries[offset];
path = $"{Path.DirectorySeparatorChar}{path}";
} while (offset != entry.ParentOffset);
return(path);
}
/// <summary>
/// Reads recursively all the entries contained in the sfp file.
/// </summary>
/// <param name="strm">Sfp stream data.</param>
/// <param name="offset_ent">Sfp entry offset.</param>
/// <param name="entries">Sfp entries indexed by offset.</param>
private unsafe static void ReadEntry(Stream strm, Int64 offset_ent, Dictionary <Int64, SfpEntry> entries)
{
SfpEntry entry;
Byte[] data;
strm.Seek(offset_ent, SeekOrigin.Begin);
data = new Byte[sizeof(SfpEntry)];
strm.Read(data, 0, data.Length);
entry = SfpEntry.CreateFromBytes(data);
entries.Add(offset_ent, entry);
if (entry.IsDir == 1)
{
for (Int64 offset = entry.StartOffset; offset < (entry.StartOffset + entry.DataLength); offset += data.Length)
{
ReadEntry(strm, offset, entries);
}
}
}
