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(Cyberworks): another archives naming scheme.

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This commit is contained in:
morkt 2016-07-31 18:57:25 +04:00
parent bfed66e077
commit 6a8b51b0af
1 changed files with 61 additions and 32 deletions
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93
ArcFormats/Cyberworks/ArcDAT.cs
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@ -62,46 +62,52 @@ namespace GameRes.Formats.Cyberworks
} }
static Regex s_arcname_re = new Regex (@"^.+0(?<id>(?<num>\d)(?<idx>[a-z])?)(?:|\..*)$", RegexOptions.IgnoreCase); static Regex s_arcname_re = new Regex (@"^.+0(?<id>(?<num>\d)(?<idx>[a-z])?)(?:|\..*)$", RegexOptions.IgnoreCase);
static Regex s_datname_re = new Regex (@"^(?<name>d[a-z]+?)(?<idx>[ah])?\.dat$", RegexOptions.IgnoreCase);
public override ArcFile TryOpen (ArcView file) public override ArcFile TryOpen (ArcView file)
{ {
var arc_name = Path.GetFileName (file.Name); var arc_name = Path.GetFileName (file.Name);
var match = s_arcname_re.Match (arc_name);
if (!match.Success)
return null;
char num = match.Groups["num"].Value[0];
if (num < '4' || num > '6')
return null;
int arc_idx = 0; int arc_idx = 0;
if (match.Groups["idx"].Success) StringBuilder toc_name_builder;
arc_idx = char.ToUpper (match.Groups["idx"].Value[0]) - '@'; var match = s_arcname_re.Match (arc_name);
if (match.Success)
var toc_name_builder = new StringBuilder (arc_name);
var num_pos = match.Groups["id"].Index;
toc_name_builder.Remove (num_pos, match.Groups["id"].Length);
toc_name_builder.Insert (num_pos, num-'3');
var toc_name = toc_name_builder.ToString();
toc_name = VFS.CombinePath (VFS.GetDirectoryName (file.Name), toc_name);
byte[] toc;
using (var toc_view = VFS.OpenView (toc_name))
{ {
if (toc_view.MaxOffset <= 0x10) char num = match.Groups["num"].Value[0];
if (num < '4' || num > '6')
return null; return null;
uint unpacked_size = DecodeDecimal (toc_view, 0); if (match.Groups["idx"].Success)
if (unpacked_size <= 4 || unpacked_size > 0x1000000) arc_idx = char.ToUpper (match.Groups["idx"].Value[0]) - '@';
return null;
uint packed_size = DecodeDecimal (toc_view, 8); toc_name_builder = new StringBuilder (arc_name);
if (packed_size > toc_view.MaxOffset) toc_name_builder.Append (arc_name);
return null; var num_pos = match.Groups["id"].Index;
toc = new byte[unpacked_size]; toc_name_builder.Remove (num_pos, match.Groups["id"].Length);
using (var toc_s = toc_view.CreateStream (0x10, packed_size)) toc_name_builder.Insert (num_pos, num-'3');
using (var lzss = new LzssStream (toc_s))
{
if (toc.Length != lzss.Read (toc, 0, toc.Length))
return null;
}
} }
else if ((match = s_datname_re.Match (arc_name)).Success)
{
toc_name_builder = new StringBuilder (match.Groups["name"].Value);
if (match.Groups["idx"].Success)
{
if ('a' == match.Groups["idx"].Value[0])
{
arc_idx = 1;
toc_name_builder.Append ('h');
}
}
else
toc_name_builder.Append ('h');
toc_name_builder.Append (".dat");
}
else
return null;
var toc_name = toc_name_builder.ToString();
toc_name = VFS.CombinePath (VFS.GetDirectoryName (file.Name), toc_name);
var toc = ReadToc (toc_name);
if (null == toc)
return null;
int entry_size = LittleEndian.ToInt32 (toc, 0) + 4; int entry_size = LittleEndian.ToInt32 (toc, 0) + 4;
if (entry_size < 0x16) if (entry_size < 0x16)
return null; return null;
@ -165,6 +171,29 @@ namespace GameRes.Formats.Cyberworks
return new BellArchive (file, this, dir, options.Scheme); return new BellArchive (file, this, dir, options.Scheme);
} }
byte[] ReadToc (string toc_name)
{
using (var toc_view = VFS.OpenView (toc_name))
{
if (toc_view.MaxOffset <= 0x10)
return null;
uint unpacked_size = DecodeDecimal (toc_view, 0);
if (unpacked_size <= 4 || unpacked_size > 0x1000000)
return null;
uint packed_size = DecodeDecimal (toc_view, 8);
if (packed_size > toc_view.MaxOffset - 0x10)
return null;
using (var toc_s = toc_view.CreateStream (0x10, packed_size))
using (var lzss = new LzssStream (toc_s))
{
var toc = new byte[unpacked_size];
if (toc.Length != lzss.Read (toc, 0, toc.Length))
return null;
return toc;
}
}
}
public override Stream OpenEntry (ArcFile arc, Entry entry) public override Stream OpenEntry (ArcFile arc, Entry entry)
{ {
uint entry_size = entry.Size; uint entry_size = entry.Size;