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Improve the handling of compressed files.

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This commit is contained in:
Perfare
2021-11-19 17:54:06 +08:00
parent d08b78c2cf
commit 91410a33b1
5 changed files with 54 additions and 56 deletions
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AssetStudio/WebFile.cs
+2 -50
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@@ -1,17 +1,11 @@
using System;
using System.Collections.Generic;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using System.Text;
using Org.Brotli.Dec;
namespace AssetStudio
{
public class WebFile
{
public static byte[] gzipMagic = { 0x1f, 0x8b };
public static byte[] brotliMagic = { 0x62, 0x72, 0x6F, 0x74, 0x6C, 0x69 };
public StreamFile[] fileList;
private class WebData
@@ -23,50 +17,8 @@ namespace AssetStudio
public WebFile(EndianBinaryReader reader)
{
var magic = reader.ReadBytes(2);
reader.Position = 0;
if (gzipMagic.SequenceEqual(magic))
{
var stream = new MemoryStream();
using (var gs = new GZipStream(reader.BaseStream, CompressionMode.Decompress))
{
gs.CopyTo(stream);
}
stream.Position = 0;
using (var binaryReader = new BinaryReader(stream))
{
ReadWebData(binaryReader);
}
}
else
{
reader.Position = 0x20;
magic = reader.ReadBytes(6);
reader.Position = 0;
if (brotliMagic.SequenceEqual(magic))
{
var brotliStream = new BrotliInputStream(reader.BaseStream);
var stream = new MemoryStream();
brotliStream.CopyTo(stream);
stream.Position = 0;
using (var binaryReader = new BinaryReader(stream))
{
ReadWebData(binaryReader);
}
}
else
{
reader.endian = EndianType.LittleEndian;
ReadWebData(reader);
}
}
}
private void ReadWebData(BinaryReader reader)
{
reader.endian = EndianType.LittleEndian;
var signature = reader.ReadStringToNull();
if (signature != "UnityWebData1.0")
return;
var headLength = reader.ReadInt32();
var dataList = new List<WebData>();
while (reader.BaseStream.Position < headLength)