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(IFL): fixed compressed files handling.

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This commit is contained in:
morkt 2017-11-24 01:25:55 +04:00
parent 8e450855a3
commit 98288fdf1c
1 changed files with 15 additions and 11 deletions
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26
ArcFormats/Silky/ArcIFL.cs
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@ -2,7 +2,7 @@
//! \date Sun Apr 12 20:47:04 2015
//! \brief IFLS archive implementation.
//
// Copyright (C) 2015 by morkt
// Copyright (C) 2015-2017 by morkt
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
@ -45,8 +45,7 @@ namespace GameRes.Formats.Silky
{
uint data_offset = file.View.ReadUInt32 (4);
int count = file.View.ReadInt32 (8);
if (data_offset <= 12 || data_offset >= file.MaxOffset
|| count <= 0 || count > 0xfffff)
if (!IsSaneCount (count) || data_offset <= 12 || data_offset >= file.MaxOffset)
return null;
var dir = new List<Entry> (count);
long index_offset = 12;
@ -55,7 +54,7 @@ namespace GameRes.Formats.Silky
string name = file.View.ReadString (index_offset, 0x10);
if (0 == name.Length)
return null;
var entry = FormatCatalog.Instance.Create<Entry> (name);
var entry = FormatCatalog.Instance.Create<PackedEntry> (name);
entry.Offset = file.View.ReadUInt32 (index_offset+0x10);
entry.Size = file.View.ReadUInt32 (index_offset+0x14);
if (!entry.CheckPlacement (file.MaxOffset))
@ -68,13 +67,18 @@ namespace GameRes.Formats.Silky
public override Stream OpenEntry (ArcFile arc, Entry entry)
{
if (entry.Size <= 8
|| !entry.Name.HasExtension (".snc")
|| !arc.File.View.AsciiEqual (entry.Offset, "CMP_"))
return arc.File.CreateStream (entry.Offset, entry.Size);
int unpacked_size = arc.File.View.ReadInt32 (entry.Offset+4);
using (var input = arc.File.CreateStream (entry.Offset+8, entry.Size-8))
using (var lzss = new LzssReader (input, (int)(entry.Size - 8), unpacked_size))
var pent = (PackedEntry)entry;
if (!pent.IsPacked)
{
if (entry.Size <= 12
|| entry.Name.HasExtension (".grd") // let GrdFormat unpack images
|| !arc.File.View.AsciiEqual (entry.Offset, "CMP_"))
return arc.File.CreateStream (entry.Offset, entry.Size);
pent.IsPacked = true;
pent.UnpackedSize = arc.File.View.ReadUInt32 (entry.Offset+4);
}
using (var input = arc.File.CreateStream (entry.Offset+12, entry.Size-12))
using (var lzss = new LzssReader (input, (int)input.Length, (int)pent.UnpackedSize))
{
lzss.FrameFill = 0x20;
lzss.Unpack();