From 5a3036149c2b7ec87c201b48e168d14c56ce0f43 Mon Sep 17 00:00:00 2001
From: Nik <werwolv98@gmail.com>
Date: Wed, 21 Dec 2022 19:57:04 +0100
Subject: [PATCH] patterns/nbt: Added NBT pattern

---
 README.md                               |   1 +
 patterns/nbt.hexpat                     |  70 ++++++++++++++++++++++++
 tests/patterns/test_data/nbt.hexpat.nbt | Bin 0 -> 1544 bytes
 3 files changed, 71 insertions(+)
 create mode 100644 patterns/nbt.hexpat
 create mode 100644 tests/patterns/test_data/nbt.hexpat.nbt

diff --git a/README.md b/README.md
index 4f9af26..87f6870 100644
--- a/README.md
+++ b/README.md
@@ -51,6 +51,7 @@ Hex patterns, include patterns and magic files for the use with the ImHex Hex Ed
 | CPIO | `application/x-cpio` | [`patterns/cpio.hexpat`](patterns/cpio.hexpat) | Old Binary CPIO Format |
 | FDT | | [`patterns/fdt.hexpat`](patterns/fdt.hexpat) | Flat Linux Device Tree blob |
 | StuffItV5 | `application/x-stuffit` | [`patterns/sit5.hexpat`](patterns/sit5.hexpat) | StuffIt V5 archive |
+| NBT | | [`patterns/nbt.hexpat`](patterns/nbt.hexpat) | Minecraft NBT format |
 
 ### Scripts
 
diff --git a/patterns/nbt.hexpat b/patterns/nbt.hexpat
new file mode 100644
index 0000000..8d84743
--- /dev/null
+++ b/patterns/nbt.hexpat
@@ -0,0 +1,70 @@
+#include <std/sys.pat>
+
+#pragma endian big
+
+enum Tag : u8 {
+    End = 0,
+    Byte = 1,
+    Short = 2,
+    Int = 3,
+    Long = 4,
+    Float = 5,
+    Double = 6,
+    ByteArray = 7,
+    String = 8,
+    List = 9,
+    Compound = 10,
+    IntArray = 11,
+    LongArray = 12
+};
+
+using Element;
+
+struct Value {
+    if (parent.tag == Tag::Byte)
+        s8 value;
+    else if (parent.tag == Tag::Short)
+        s16 value;
+    else if (parent.tag == Tag::Int)
+        s32 value;
+    else if (parent.tag == Tag::Long)
+        s64 value;
+    else if (parent.tag == Tag::Float)
+        float value;
+    else if (parent.tag == Tag::Double)
+        double value;
+    else if (parent.tag == Tag::ByteArray) {
+        s32 arrayLength;
+        s8 value[arrayLength] [[sealed]];
+    } else if (parent.tag == Tag::String) {
+        u16 stringLength;
+        char value[stringLength];
+    } else if (parent.tag == Tag::List) {
+        Tag tag;
+        s32 listLength;
+        Value values[listLength] [[static]];
+    } else if (parent.tag == Tag::Compound) {       
+        Element values[while(true)];
+    } else {
+        std::error(std::format("Invalid tag {:02X}", TypeTag));
+    }
+} [[inline]];
+
+struct Element {
+    Tag tag;
+    if (tag == Tag::End)
+        break;
+    else {
+
+        u16 nameLength;
+        char name[nameLength];
+            
+        Value value;
+    }
+};
+
+struct NBT {
+    Element element[while(true)] [[inline]];
+};
+
+NBT nbt @ 0x00;
\ No newline at end of file
diff --git a/tests/patterns/test_data/nbt.hexpat.nbt b/tests/patterns/test_data/nbt.hexpat.nbt
new file mode 100644
index 0000000000000000000000000000000000000000..a2021df7cb5ee7125965c18aaaf45fa60a3e2759
GIT binary patch
literal 1544
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zvbTMiJ@Og$yw`mTb}8Uqw&%TYbCYxK@BHrhcmHq@Qpi0q8DLG@GF0MvA4iiBfT-KG
z9dClMz`35&n@~WgRTbqJ&yE{P1=ZSN6Y1PTwc1p%sWuMl?{WBf_-Xj<c?hB%)7E@1
zrBNyugh<bt`W%foNLn-`Y2&rszq1Ec8$G(_AlTLVEHIYVClIb_{kwr1g3!HY4#;j9
z04ReP#*7iE8ir0B?~y_o08vPoJ=c$g{J1)Sp=ijr0X&(?*i=59%J@_!qVVj`_E~xY
zN6mp*+{C-btTh8)$P94T4$){muWbupA>G*e@df_D&i<Xf0IdGt5x?sZAY*;cakPgq
zfV|fw*y%Y`&C0TjenVWeJIGrZE0f#Yd}U>}gqPGPqU&jnM^6kt^t>)wZ)M~uTF8m`
zCNE;PAYxHONs<HsAovSP>x(S6EGkO}$eh+sF5}WUA2=$?xstlL&DF$}r6d+kS5GqW
ztMiLMs;K8;>i+glt+i4~HVPZ7Ynk#@`XZkS>kwPtXLpucO68!zY}D5-%Tk)pABE+4
fjCrr-_v-(?k1%j;d!U>C53~F8>+Sc^O$&Yl_JmkZ

literal 0
HcmV?d00001