Add mime-type definition

Author: mgautierfr

README.md

@@ -135,7 +135,7 @@ tar2arx -o my_archive.arx https://example.com/my_archive.tar.gz
 
 Arx mimetype can be registered by:
 
-- Copying misc/mime_type.xml as `~/.local/share/mime/packages/arx.xml`.
+- Copying arx/misc/mime_type.xml as `~/.local/share/mime/packages/arx.xml`.
 - Run `update-mime-database ~/.local/share/mime`
 
 ## Completion scripts

arx/misc/mime_type.xml

@@ -0,0 +1,14 @@
+<?xml version='1.0'?>
+<mime-info xmlns='http://www.freedesktop.org/standards/shared-mime-info'>
+  <mime-type type="application/x-arx">
+    <comment>Arx archive files</comment>
+    <sub-class-of type="application/x-archive" />
+    <magic priority="50">
+      <match type="string" offset="0:256" value="jbk_ARX" mask="0xffffff00ffffff"/>
+    </magic>
+    <glob pattern="*.arx"/>
+
+    <icon name="package-x-generic" />
+    <generic-icon name="package-x-generic" />
+  </mime-type>
+</mime-info>