public BigArchiveEntryStream(BigArchiveEntry entry, uint offset)
{
_write = false;
_entry = entry;
_archive = entry.Archive;
_offset = offset;
}
public BigArchiveEntry CreateEntry(string entryName)
{
var entry = new BigArchiveEntry(this, entryName);
_entriesDictionary[entryName] = entry;
_entries.Add(entry);
return(entry);
}
public BigArchiveEntryStream(BigArchiveEntry entry, uint offset)
{
_entry = entry;
_archive = entry.Archive;
_offset = offset;
_archive.AcquireLock();
_locked = true;
}
private void Read()
{
using (var reader = new BinaryReader(_stream, Encoding.ASCII, true))
{
//Special case for empty archives/ placeholder archives
if (reader.BaseStream.Length < 4)
{
var a = reader.ReadByte();
var b = reader.ReadByte();
if (a == '?' && b == '?')
{
return;
}
else
{
throw new InvalidDataException($"Big archive is too small");
}
}
var fourCc = reader.ReadFourCc();
switch (fourCc)
{
case "BIGF":
Version = BigArchiveVersion.BigF;
break;
case "BIG4":
Version = BigArchiveVersion.Big4;
break;
default:
throw new InvalidDataException($"Not a supported BIG format: {fourCc}");
}
reader.ReadBigEndianUInt32(); // Archive Size
var numEntries = reader.ReadBigEndianUInt32();
reader.ReadBigEndianUInt32(); // First File Offset
for (var i = 0; i < numEntries; i++)
{
var entryOffset = reader.ReadBigEndianUInt32();
var entrySize = reader.ReadBigEndianUInt32();
var entryName = reader.ReadNullTerminatedString();
var entry = new BigArchiveEntry(this, entryName, entryOffset, entrySize);
_entries.Add(entry);
// Overwrite any previous entries with the same name.
// Yes, at least one .big file has entries with duplicate names.
_entriesDictionary[entryName] = entry;
}
}
}
internal void DeleteEntry(BigArchiveEntry entry)
{
_entries.Remove(entry);
WriteToDisk(true);
}