From 7ad9cd4f413c3c38e92ce15be5fa4547c69ecae3 Mon Sep 17 00:00:00 2001
From: David Schneider <dsbrng25b@gmail.com>
Date: Sat, 10 May 2025 13:49:02 +0200
Subject: [PATCH] patterns: Added support for GNU MO files (#383)

---
 README.md                             |   1 +
 patterns/mo.hexpat                    |  37 ++++++++++++++++++++++++++
 tests/patterns/test_data/mo.hexpat.mo | Bin 0 -> 182 bytes
 3 files changed, 38 insertions(+)
 create mode 100644 patterns/mo.hexpat
 create mode 100644 tests/patterns/test_data/mo.hexpat.mo

diff --git a/README.md b/README.md
index 2447330..dd2d676 100644
--- a/README.md
+++ b/README.md
@@ -105,6 +105,7 @@ Everything will immediately show up in ImHex's Content Store and gets bundled wi
 | MBR & GPT | | [`patterns/partition_table.hexpat`](patterns/partition_table.hexpat) | Partition tables with primary focus on GPT |
 | MIDI | `audio/midi` | [`patterns/midi.hexpat`](patterns/midi.hexpat) | MIDI header, event fields provided |
 | MiniDump | `application/x-dmp` | [`patterns/minidump.hexpat`](patterns/minidump.hexpat) | Windows MiniDump files |
+| MO | | [`patterns/mo.hexpat`](patterns/mo.hexpat) | GNU Machine Object (MO) files containing translations for gettext |
 | mp4 | `video/mp4` | [`patterns/mp4.hexpat`](patterns/mp4.hexpat) | MPEG-4 Part 14 digital multimedia container format |
 | msgpack | `application/x-msgpack` | [`patterns/msgpack.hexpat`](patterns/msgpack.hexpat) | MessagePack binary serialization format |
 | MSSCMP | | [`patterns/msscmp.hexpat`](patterns/msscmp.hexpat) | Miles Sound System Compressed Archive |
diff --git a/patterns/mo.hexpat b/patterns/mo.hexpat
new file mode 100644
index 0000000..2636548
--- /dev/null
+++ b/patterns/mo.hexpat
@@ -0,0 +1,37 @@
+#pragma author dvob
+#pragma description GNU Machine Object (MO) files containing translations for gettext
+
+// https://www.gnu.org/software/gettext/manual/html_node/MO-Files.html
+
+import std.core;
+import std.io;
+
+struct strPtr {
+    u32 length;
+    u32 offset;
+    char string[length] @ offset;
+};
+
+struct file {
+    be u32 magic;
+    if ( magic == 0x950412de )
+        std::core::set_endian(std::mem::Endian::Big);
+    else if ( magic == 0xde120495)
+        std::core::set_endian(std::mem::Endian::Little);
+    else
+        std::error("Invalid MO Magic!");
+
+    u16 majorVersion;
+    u16 minorVersion;
+    u32 count;
+    u32 msgIdOffset;
+    u32 msgStrOffset;
+    u32 hashSize;
+    u32 hashOffset;
+
+    u32 hashTable[hashSize] @ hashOffset;
+    strPtr msgIDTable[count] @ msgIdOffset;
+    strPtr msgStrTable[count] @ msgStrOffset;
+};
+
+file moFile @ 0x0;
diff --git a/tests/patterns/test_data/mo.hexpat.mo b/tests/patterns/test_data/mo.hexpat.mo
new file mode 100644
index 0000000000000000000000000000000000000000..fe9844cfaa7f4489d70c7bcf90154d15d77483a4
GIT binary patch
literal 182
zcmca7#4?ou2$+Ca28eZlm=%a^fEWY<fS3h{1A#aUiaCJvS|DZwVh{l7g#(XFMJ@)P
z#Ju#<#Pn1vh4kWbF6aEblGMBs-H^%xph!t-MTvevPGV-BwL)@6Vo`BwiEU_zo2~^y
mT~T6QaawATu4`U$eoAIux|M=OQf3JkL-64xIfwTE%?AKgbtek|

literal 0
HcmV?d00001