From 6b9f39cc2175c573fec2ae703f2c9ee3821f7335 Mon Sep 17 00:00:00 2001
From: Mark Jansen <mark.jansen@reactos.org>
Date: Fri, 15 Aug 2025 17:16:50 +0200
Subject: [PATCH] patterns: Add SDB pattern (#424)

Co-authored-by: Nik <werwolv98@gmail.com>
---
 README.md                               |   1 +
 patterns/sdb.hexpat                     |  87 ++++++++++++++++++++++++
 tests/patterns/test_data/sdb.hexpat.sdb | Bin 0 -> 260 bytes
 3 files changed, 88 insertions(+)
 create mode 100644 patterns/sdb.hexpat
 create mode 100644 tests/patterns/test_data/sdb.hexpat.sdb

diff --git a/README.md b/README.md
index 695e312..6f0cc41 100644
--- a/README.md
+++ b/README.md
@@ -154,6 +154,7 @@ Everything will immediately show up in ImHex's Content Store and gets bundled wi
 | ReFS | | [`patterns/refs.hexpat`](patterns/fs/refs.hexpat) | Microsoft Resilient File System |
 | RGBDS | | [`patterns/rgbds.hexpat`](patterns/rgbds.hexpat) | [RGBDS](https://rgbds.gbdev.io) object file format |
 | RPM | | [`patterns/rpm.hexpat`](patterns/rpm.hexpat) | [RPM](http://ftp.rpm.org/max-rpm/s1-rpm-file-format-rpm-file-format.html) package file format |
+| SDB | | [`patterns/sdb.hexpat`](patterns/sdb.hexpat) | [Shim DataBase](https://learn.microsoft.com/en-us/windows/win32/devnotes/application-compatibility-database) file format |
 | Shell Link | `application/x-ms-shortcut` | [`patterns/lnk.hexpat`](patterns/lnk.hexpat) | Windows Shell Link file format |
 | shp | | [`patterns/shp.hexpat`](patterns/shp.hexpat) | ESRI shape file |
 | shx | | [`patterns/shx.hexpat`](patterns/shx.hexpat) | ESRI index file |
diff --git a/patterns/sdb.hexpat b/patterns/sdb.hexpat
new file mode 100644
index 0000000..e097c3c
--- /dev/null
+++ b/patterns/sdb.hexpat
@@ -0,0 +1,87 @@
+#pragma description SDB File (Shim DataBase file)
+#pragma author learn_more
+#pragma magic [ 73 64 62 66 ] @ 0x08
+#pragma endian little
+
+import std.mem;
+import std.io;
+import std.string;
+import type.base;
+
+enum TagType : u8 {
+    Null = 0x1,
+    Byte = 0x2,
+    Word = 0x3,
+    DWord = 0x4,
+    QWord = 0x5,
+    StringRef = 0x6,
+    List = 0x7,
+    String = 0x8,
+    Binary = 0x9,
+};
+
+bitfield TypeId {
+    id : 12;
+    type : 4;
+};
+
+fn get_tag(TypeId tag) {
+    return std::format("{:x}{:03x}", tag.type, tag.id);
+};
+
+fn get_type(TypeId tag) {
+    TagType tmp = tag.type;
+    str name = std::format("{}", tmp);
+    u32 len = std::string::length(name);
+    return std::string::substr(name, 9, len-9);
+};
+
+struct Tag {
+    TypeId tag[[format_read("get_tag")]];
+    match (tag.type) {
+        (TagType::Null) : {
+            // All set
+        }
+        (TagType::Byte) : {
+            u8 value;
+            u8 pad[[hidden]];
+        }
+        (TagType::Word) : {
+            u16 value;
+        }
+        (TagType::DWord) : {
+            u32 value;
+        }
+        (TagType::QWord) : {
+            u64 value;
+        }
+        (TagType::StringRef) : {
+            u32 str_offset;
+            char value @ str_offset;
+        }
+        (TagType::List) : {
+            u32 size ;
+            Tag tags[while($ < ((addressof(size) + size + 4) ))];
+        }
+        (TagType::String) : {
+            u32 size;
+            char16 value[size/2];
+        }
+        (TagType::Binary) : {
+           u32 size;
+           u8 value[size];
+           if (size & 1 ) {
+            u8 pad[[hidden]];
+           }
+        }
+    }
+}[[name(get_tag(tag)), comment(get_type(tag))]];
+
+struct Header {
+    u32 Major;
+    u32 Minor;
+    char Magic[4];
+    Tag tags[while(!std::mem::eof())];
+};
+
+Header file @ 0x0;
\ No newline at end of file
diff --git a/tests/patterns/test_data/sdb.hexpat.sdb b/tests/patterns/test_data/sdb.hexpat.sdb
new file mode 100644
index 0000000000000000000000000000000000000000..e98a40e1be84ac8f94a9307bc4b94c882a2c5919
GIT binary patch
literal 260
zcmYL?uMWa65XSGi@kg!*1PNpmO|oQW@&tk)$P9iEs6sR$VRnwmy&H0hSKtN8T_^aO
z{CeNrcWnfN9@mRS_Z8zpCxO)Wka-W}Sx^c^&`mio)a)7+;!w$jVHXojp~s9pNmrFZ
z5r*BNX4l9|PdLL}W|j1nTL=qPM11BHvD=VluE{V*?#LXwJ#*q_%q1~kMaay_XaxNK
dSH2E*`?<X_?j#j=3A3&3$!Mds$#*APw?FZNGP?i(

literal 0
HcmV?d00001