patterns: Added support for GNU MO files (#383)

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;