/// <summary>
/// Open IMG archive entry
/// </summary>
/// <returns>Stream to archive entry if successful, otherwise "null"</returns>
public Stream Open()
{
IMGArchiveEntryStream ret = null;
try
{
if (available && archive.Stream.CanRead)
{
byte[] data = new byte[length];
archive.Stream.Seek(offset, SeekOrigin.Begin);
archive.Stream.Read(data, 0, length);
ret = new IMGArchiveEntryStream(this);
ret.Write(data, 0, data.Length);
ret.Seek(0L, SeekOrigin.Begin);
ret.OnClose += (entry, stream) =>
{
if (entry != null)
{
entry.Commit(stream);
}
};
}
}
catch (Exception e)
{
if (ret != null)
{
ret.Dispose();
ret = null;
}
Console.Error.WriteLine(e);
}
return(ret);
}
/// <summary>
/// Commit changes
/// </summary>
private void Commit(IMGArchiveEntryStream stream)
{
if (archive.Mode != EIMGArchiveMode.Read)
{
archive.CommitEntry(this, stream);
}
}
/// <summary>
/// Commit IMG archive entry
/// </summary>
/// <param name="entry">IMG archive entry</param>
/// <param name="stream">IMG archive entry stream</param>
internal void CommitEntry(IMGArchiveEntry entry, IMGArchiveEntryStream stream)
{
try
{
if (mode != EIMGArchiveMode.Read)
{
string temp_path = Path.GetTempPath() + Guid.NewGuid().ToString() + ".img";
if (File.Exists(temp_path))
{
File.Delete(temp_path);
}
using (FileStream temp_stream = File.Open(temp_path, FileMode.Create))
{
this.stream.Seek(0L, SeekOrigin.Begin);
byte[] buffer = new byte[2048];
int read_bytes = 0;
while ((read_bytes = this.stream.Read(buffer, 0, buffer.Length)) > 0)
{
temp_stream.Write(buffer, 0, read_bytes);
}
}
using (IMGArchive temp_archive = IMGFile.OpenRead(temp_path))
{
entries.Clear();
this.stream.SetLength(0L);
int entry_count = temp_archive.entries.Values.Count + ((entry == null) ? 0 : (entry.IsNewEntry ? 1 : 0));
int first_entry_offset = ((((entry_count * 32) % 2048) == 0) ? ((entry_count * 32) / 2048) : (((entry_count * 32) / 2048) + 1));
int current_entry_offset = first_entry_offset;
List <IMGArchiveEntry> new_entries = new List <IMGArchiveEntry>();
byte[] header_bytes = new byte[] { 0x56, 0x45, 0x52, 0x32, (byte)(entry_count & 0xFF), (byte)((entry_count >> 8) & 0xFF), 0x0, 0x0 };
this.stream.Write(header_bytes, 0, header_bytes.Length);
Dictionary <string, IMGArchiveEntry> temp_entries = new Dictionary <string, IMGArchiveEntry>(temp_archive.entries);
if (entry != null)
{
if (entry.IsNewEntry)
{
temp_entries.Add(entry.FullName.ToLower(), new IMGArchiveEntry(temp_archive, 0L, (int)(stream.Length), entry.FullName));
}
}
foreach (KeyValuePair <string, IMGArchiveEntry> temp_entry in temp_entries)
{
int entry_length = (int)((entry == null) ? (((temp_entry.Value.Length % 2048L) == 0L) ? (temp_entry.Value.Length / 2048L) : ((temp_entry.Value.Length / 2048L) + 1L)) : ((entry.FullName.ToLower() == temp_entry.Key) ? (((stream.Length % 2048L) == 0L) ? (stream.Length / 2048L) : ((stream.Length / 2048L) + 1)) : (((temp_entry.Value.Length % 2048L) == 0L) ? (temp_entry.Value.Length / 2048L) : ((temp_entry.Value.Length / 2048L) + 1L))));
byte[] entry_offset_bytes = new byte[] { (byte)(current_entry_offset & 0xFF), (byte)((current_entry_offset >> 8) & 0xFF), (byte)((current_entry_offset >> 16) & 0xFF), (byte)((current_entry_offset >> 24) & 0xFF) };
byte[] entry_length_bytes = new byte[] { (byte)(entry_length & 0xFF), (byte)((entry_length >> 8) & 0xFF), 0x0, 0x0 };
byte[] name_bytes_raw = entryNameEncoding.GetBytes(temp_entry.Value.FullName);
byte[] name_bytes = new byte[24];
Array.Copy(name_bytes_raw, name_bytes, Math.Min(name_bytes_raw.Length, name_bytes.Length));
this.stream.Write(entry_offset_bytes, 0, entry_offset_bytes.Length);
this.stream.Write(entry_length_bytes, 0, entry_length_bytes.Length);
this.stream.Write(name_bytes, 0, name_bytes.Length);
IMGArchiveEntry new_entry = new IMGArchiveEntry(this, current_entry_offset * 2048, entry_length * 2048, temp_entry.Value.FullName);
new_entries.Add(new_entry);
entries.Add(new_entry.FullName.ToLower(), new_entry);
current_entry_offset += entry_length;
}
foreach (IMGArchiveEntry new_entry in new_entries)
{
while (this.stream.Length < new_entry.Offset)
{
this.stream.WriteByte(0);
}
if (entry != null)
{
if (entry.FullName == new_entry.FullName)
{
byte[] data = new byte[stream.Length];
stream.Seek(0L, SeekOrigin.Begin);
stream.Read(data, 0, data.Length);
this.stream.Write(data, 0, data.Length);
}
else
{
WriteEntry(temp_archive, new_entry, this.stream);
}
}
else
{
WriteEntry(temp_archive, new_entry, this.stream);
}
}
while ((this.stream.Length / 2048) < current_entry_offset)
{
this.stream.WriteByte(0);
}
}
if (File.Exists(temp_path))
{
File.Delete(temp_path);
}
}
}
catch (Exception e)
{
Console.Error.WriteLine(e.Message);
}
}
