public override ArcFile TryOpen(ArcView file)
{
int count = file.View.ReadInt32(0);
if (!IsSaneCount(count))
{
return(null);
}
List <Entry> dir = null;
foreach (var name_size in NameSizes)
{
uint index_size = (uint)((name_size + 8) * count);
uint first_offset = file.View.ReadUInt32(4 + name_size + 4);
if (first_offset == (4 + index_size) && first_offset < file.MaxOffset)
{
if (null == dir)
{
dir = new List <Entry> (count);
}
else
{
dir.Clear();
}
long index_offset = 4;
for (int i = 0; i < count; ++i)
{
string name = file.View.ReadString(index_offset, name_size);
if (string.IsNullOrWhiteSpace(name))
{
goto CheckNextLength;
}
index_offset += name_size;
uint offset = file.View.ReadUInt32(index_offset + 4);
var entry = new AutoEntry(name, () => {
uint signature = file.View.ReadUInt32(offset);
if (1 == signature)
{
return(s_GraFormat.Value);
}
return(AutoEntry.DetectFileType(signature));
});
entry.Offset = offset;
entry.Size = file.View.ReadUInt32(index_offset);
if (offset <= index_size || !entry.CheckPlacement(file.MaxOffset))
{
goto CheckNextLength;
}
dir.Add(entry);
index_offset += 8;
}
return(new ArcFile(file, this, dir));
}
CheckNextLength:
;
}
return(null);
}
public override ArcFile TryOpen(ArcView file)
{
var first_offset = file.View.ReadUInt32(8);
if (first_offset <= 0x14 || first_offset >= file.MaxOffset || first_offset > int.MaxValue)
{
return(null);
}
int index_size = (int)(first_offset - 4);
var count = index_size / 0x10;
if (count * 0x10 != index_size)
{
return(null);
}
string base_name = Path.GetFileNameWithoutExtension(file.Name);
uint index_offset = 4;
uint last_offset = 0;
var dir = new List <Entry> (count);
for (int i = 0; i < count; ++i)
{
var offset = file.View.ReadUInt32(index_offset + 4);
if (0 == offset)
{
break;
}
if (offset <= last_offset)
{
return(null);
}
string name = string.Format("{0}#{1:D4}", base_name, i);
var entry = new AutoEntry(name, () => {
uint signature = file.View.ReadUInt32(offset);
if (0 == signature)
{
return(null);
}
return(FormatCatalog.Instance.LookupSignature(signature).FirstOrDefault());
});
entry.Offset = offset;
entry.Size = file.View.ReadUInt32(index_offset);
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
dir.Add(entry);
last_offset = offset;
index_offset += 0x10;
}
if (0 == dir.Count)
{
return(null);
}
return(new ArcFile(file, this, dir));
}
public override ArcFile TryOpen(ArcView file)
{
if (!file.View.AsciiEqual(0, "MD"))
{
return(null);
}
uint entry_length = file.View.ReadUInt16(4);
int count = file.View.ReadUInt16(6);
if (entry_length <= 8 || !IsSaneCount(count))
{
return(null);
}
uint name_length = entry_length - 8;
uint index_offset = 0x10;
var dir = new List <Entry> (count);
for (int i = 0; i < count; ++i)
{
var name = file.View.ReadString(index_offset, name_length);
index_offset += name_length;
uint offset = file.View.ReadUInt32(index_offset + 4);
var entry = new AutoEntry(name, () => {
uint signature = file.View.ReadUInt32(offset);
if (0x4259 == (signature & 0xFFFF)) // 'YB'
{
return(PrsFormat.Value);
}
return(AutoEntry.DetectFileType(signature));
});
entry.Size = file.View.ReadUInt32(index_offset);
entry.Offset = offset;
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
dir.Add(entry);
index_offset += 8;
}
var base_name = Path.GetFileNameWithoutExtension(file.Name);
if (base_name.EndsWith("_scr", StringComparison.OrdinalIgnoreCase) &&
KnownSchemes.Count > 0)
{
var encryption = QueryEncryption(file.Name);
if (encryption != null)
{
return(new ScrMedArchive(file, this, dir, encryption));
}
}
return(new ArcFile(file, this, dir));
}
public override ArcFile TryOpen(ArcView file)
{
uint file_size = file.View.ReadUInt32(4);
if (file_size != file.MaxOffset)
{
return(null);
}
int count = file.View.ReadInt32(8);
if (count <= 0 || count > 0xfffff)
{
return(null);
}
int dir_level = file.View.ReadByte(0x0d);
int dir_entries = file.View.ReadUInt16(0x0e);
uint index_offset = 0x10;
uint index_size = (uint)(count * 0x18 + dir_entries * 8);
if (index_size > file.View.Reserve(index_offset, index_size))
{
return(null);
}
List <DirEntry> folders = null;
if (0 != dir_entries && 2 == dir_level)
{
folders = new List <DirEntry> (dir_entries);
uint dir_offset = index_offset + (uint)count * 0x18;
for (int i = 0; i < dir_entries; ++i)
{
folders.Add(new DirEntry {
Name = file.View.ReadString(dir_offset, 4),
Index = file.View.ReadInt32(dir_offset + 4)
});
dir_offset += 8;
}
}
bool is_mask_arc = VFS.IsPathEqualsToFileName(file.Name, "mask.arc");
var dir = new List <Entry> (count);
int next_folder = null == folders ? count : folders[0].Index;
int folder = 0;
string current_folder = "";
for (int i = 0; i < count; ++i)
{
while (i >= next_folder && folder < folders.Count)
{
current_folder = folders[folder++].Name;
if (folders.Count == folder)
{
next_folder = count;
}
else
{
next_folder = folders[folder].Index;
}
}
string name = file.View.ReadString(index_offset, 0x10);
if (0 == name.Length)
{
return(null);
}
var offset = file.View.ReadUInt32(index_offset + 0x10);
var entry = new AutoEntry(Path.Combine(current_folder, name), () => {
if (is_mask_arc)
{
return(s_MskFormat.Value);
}
uint signature = file.View.ReadUInt32(offset);
switch (signature & 0xFFFF)
{
case 0x4D43: return(s_CmFormat.Value);
case 0x4D41: return(s_AmFormat.Value);
case 0x4D42: return(ImageFormat.Bmp);
default: return(AutoEntry.DetectFileType(signature));
}
});
entry.Offset = offset;
entry.Size = file.View.ReadUInt32(index_offset + 0x14);
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
dir.Add(entry);
index_offset += 0x18;
}
return(new ArcFile(file, this, dir));
}
public override ArcFile TryOpen(ArcView file)
{
var first_offset = file.View.ReadUInt32 (8);
if (first_offset <= 0x14 || first_offset >= file.MaxOffset || first_offset > int.MaxValue)
return null;
int index_size = (int)(first_offset - 4);
var count = index_size / 0x10;
if (count * 0x10 != index_size)
return null;
string base_name = Path.GetFileNameWithoutExtension (file.Name);
uint index_offset = 4;
uint last_offset = 0;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var offset = file.View.ReadUInt32 (index_offset+4);
if (0 == offset)
break;
if (offset <= last_offset)
return null;
string name = string.Format ("{0}#{1:D4}", base_name, i);
var entry = new AutoEntry (name, () => {
uint signature = file.View.ReadUInt32 (offset);
if (0 == signature) return null;
return FormatCatalog.Instance.LookupSignature (signature).FirstOrDefault();
});
entry.Offset = offset;
entry.Size = file.View.ReadUInt32 (index_offset);
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
last_offset = offset;
index_offset += 0x10;
}
if (0 == dir.Count)
return null;
return new ArcFile (file, this, dir);
}
public override ArcFile TryOpen(ArcView file)
{
if (!file.View.AsciiEqual (0, "MD"))
return null;
uint entry_length = file.View.ReadUInt16 (4);
int count = file.View.ReadUInt16 (6);
if (entry_length <= 8 || !IsSaneCount (count))
return null;
uint name_length = entry_length - 8;
uint index_offset = 0x10;
var dir = new List<Entry> (count);
for (int i = 0; i < count; ++i)
{
var name = file.View.ReadString (index_offset, name_length);
index_offset += name_length;
uint offset = file.View.ReadUInt32 (index_offset+4);
var entry = new AutoEntry (name, () => {
uint signature = file.View.ReadUInt32 (offset);
if (0x4259 == (signature & 0xFFFF)) // 'YB'
return PrsFormat.Value;
return AutoEntry.DetectFileType (signature);
});
entry.Size = file.View.ReadUInt32 (index_offset);
entry.Offset = offset;
if (!entry.CheckPlacement (file.MaxOffset))
return null;
dir.Add (entry);
index_offset += 8;
}
var base_name = Path.GetFileNameWithoutExtension (file.Name);
if (base_name.EndsWith ("_scr", StringComparison.InvariantCultureIgnoreCase)
&& KnownSchemes.Count > 0)
{
var options = Query<MedOptions> (arcStrings.ArcEncryptedNotice);
if (options.Encryption != null)
return new ScrMedArchive (file, this, dir, options.Encryption);
}
return new ArcFile (file, this, dir);
}
public override ArcFile TryOpen(ArcView file)
{
int count = file.View.ReadInt32 (0);
if (!IsSaneCount (count))
return null;
List<Entry> dir = null;
foreach (var name_size in NameSizes)
{
uint index_size = (uint)((name_size+8) * count);
uint first_offset = file.View.ReadUInt32 (4+name_size+4);
if (first_offset == (4 + index_size) && first_offset < file.MaxOffset)
{
if (null == dir)
dir = new List<Entry> (count);
long index_offset = 4;
for (int i = 0; i < count; ++i)
{
string name = file.View.ReadString (index_offset, name_size);
if (string.IsNullOrWhiteSpace (name))
goto CheckNextLength;
index_offset += name_size;
uint offset = file.View.ReadUInt32 (index_offset+4);
var entry = new AutoEntry (name, () => {
uint signature = file.View.ReadUInt32 (offset);
if (1 == signature)
return s_GraFormat.Value;
return AutoEntry.DetectFileType (signature);
});
entry.Offset = offset;
entry.Size = file.View.ReadUInt32 (index_offset);
if (offset <= index_size || !entry.CheckPlacement (file.MaxOffset))
goto CheckNextLength;
dir.Add (entry);
index_offset += 8;
}
return new ArcFile (file, this, dir);
}
CheckNextLength:
;
}
return null;
}
public override ArcFile TryOpen(ArcView file)
{
uint file_size = file.View.ReadUInt32(4);
if (file_size != file.MaxOffset)
{
return(null);
}
int count = file.View.ReadInt32(8);
if (count <= 0 || count > 0xfffff)
{
return(null);
}
int dir_level = file.View.ReadByte(0x0d);
int dir_entries = file.View.ReadUInt16(0x0e);
uint index_offset = 0x10;
uint index_size = (uint)(count * 0x18 + dir_entries * 8);
if (index_size > file.View.Reserve(index_offset, index_size))
{
return(null);
}
List <DirEntry> folders = null;
if (0 != dir_entries && 2 == dir_level)
{
folders = new List <DirEntry> (dir_entries);
uint dir_offset = index_offset + (uint)count * 0x18;
for (int i = 0; i < dir_entries; ++i)
{
folders.Add(new DirEntry {
Name = file.View.ReadString(dir_offset, 4),
Index = file.View.ReadInt32(dir_offset + 4)
});
dir_offset += 8;
}
}
bool is_mask_arc = "mask.arc" == Path.GetFileName(file.Name).ToLowerInvariant();
var dir = new List <Entry> (count);
int next_folder = null == folders ? count : folders[0].Index;
int folder = 0;
string current_folder = "";
for (int i = 0; i < count; ++i)
{
while (i >= next_folder && folder < folders.Count)
{
current_folder = folders[folder++].Name;
if (folders.Count == folder)
{
next_folder = count;
}
else
{
next_folder = folders[folder].Index;
}
}
string name = file.View.ReadString(index_offset, 0x10);
if (0 == name.Length)
{
return(null);
}
var offset = file.View.ReadUInt32(index_offset + 0x10);
var entry = new AutoEntry(Path.Combine(current_folder, name), () => {
uint signature = file.View.ReadUInt32(offset);
if (is_mask_arc)
{
return(ImageFormat.FindByTag("MSK/MAI"));
}
else if (0x4d43 == (signature & 0xffff)) // 'CM'
{
return(ImageFormat.FindByTag("CM/MAI"));
}
else if (0x4d41 == (signature & 0xffff)) // 'AM'
{
return(ImageFormat.FindByTag("AM/MAI"));
}
else if (0x4d42 == (signature & 0xffff)) // 'BM'
{
return(ImageFormat.Bmp);
}
else if (signature != 0)
{
return(FormatCatalog.Instance.LookupSignature(signature).FirstOrDefault());
}
else
{
return(null);
}
});
entry.Offset = offset;
entry.Size = file.View.ReadUInt32(index_offset + 0x14);
if (!entry.CheckPlacement(file.MaxOffset))
{
return(null);
}
dir.Add(entry);
index_offset += 0x18;
}
return(new ArcFile(file, this, dir));
}
