lifegpc/GARbro-crskycode
1
0
Fork 0
mirror of https://github.com/crskycode/GARbro.git synced 2026-07-08 01:30:18 +08:00
Code Issues Packages Projects Releases Wiki Activity

feat: support compressed and embedded EVB package

Browse Source 
There might be a conflict with Experimental/Microsoft/ArcEXE.cs. Maybe add a option later to disable that?
This commit is contained in:
scientificworld
2026-01-18 10:10:35 +08:00
parent 54cc895d1f
commit 87195d8673
2 changed files with 239 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

57
ArcFormats/Enigma/ArcEVB.cs
View File

@@ -29,6 +29,7 @@ using System.IO;
using System.Linq;
using System.Text;
using GameRes.Utility;
using GameRes.Compression;
namespace GameRes.Formats.Enigma {
public enum NodeTypes {
@@ -45,14 +46,33 @@ namespace GameRes.Formats.Enigma {
public override bool IsHierarchic { get { return true; } }
public override bool CanWrite { get { return false; } }
public EvbPackOpener() {
Signatures = new uint[] { 0x425645, 0x905a4d, 0 };
}
public override ArcFile TryOpen(ArcView file) {
uint index_size = file.View.ReadUInt32(0x40) + 68;
uint index_offset = 0x4F;
uint base_offset = 0;
if (file.View.AsciiEqual(0, "MZ")) {
var exe = new ExeFile(file);
var sig = new byte[] { 0x45, 0x56, 0x42, 0x00 };
if (exe.ContainsSection(".enigma1")) {
var ofs = exe.FindString(exe.Sections[".enigma1"], sig);
if (ofs != -1)
base_offset = (uint)ofs;
}
if (base_offset == 0)
return null;
}
else if (!file.View.AsciiEqual(0, "EVB"))
return null;
uint index_size = file.View.ReadUInt32(base_offset + 0x40) + base_offset + 68;
uint index_offset = base_offset + 0x4F;
uint file_offset = index_size;
var dir = new List<Entry>();
var name_buffer = new StringBuilder();
var counts = new List<uint> { file.View.ReadUInt32(0x4C) };
var counts = new List<uint> { file.View.ReadUInt32(base_offset + 0x4C) };
var names = new List<string> { "" };
while (index_offset < index_size - 4) {
@@ -73,12 +93,12 @@ namespace GameRes.Formats.Enigma {
index_offset++;
counts[counts.Count - 1]--;
if (type == NodeTypes.File) {
var entry = Create<Entry>(Path.Combine(names.Concat(new[] { name }).ToArray()));
var entry = Create<PackedEntry>(Path.Combine(names.Concat(new[] { name }).ToArray()));
uint unpacked_size = file.View.ReadUInt32(index_offset + 2);
uint size = file.View.ReadUInt32(index_offset + 49);
if (unpacked_size != size)
return null; // packed entry not implemented
entry.IsPacked = unpacked_size != size;
entry.Offset = file_offset;
entry.UnpackedSize = unpacked_size;
entry.Size = size;
file_offset += size;
if (!entry.CheckPlacement(file.MaxOffset))
@@ -106,5 +126,30 @@ namespace GameRes.Formats.Enigma {
return new ArcFile(file, this, dir);
}
public override Stream OpenEntry(ArcFile arc, Entry entry) {
var pent = entry as PackedEntry;
if (pent.IsPacked) {
uint header_size = arc.File.View.ReadUInt32(pent.Offset);
uint offset = header_size;
Stream input = null;
for (uint i = 8; i < header_size; i += 12) {
uint chunk_size = arc.File.View.ReadUInt32(pent.Offset + i);
var chunk = new aPLibStream(
arc.File.CreateStream(pent.Offset + offset, chunk_size)
);
if (input != null)
input = new ConcatStream(input, chunk);
else
input = chunk;
offset += chunk_size;
}
return input;
}
else
return arc.File.CreateStream(pent.Offset, pent.Size);
}
}
}