Add mimetype for Devicetree source code

Make sure at least the first two characters are ASCII, to guard against
any binary files. The maximum offset is fairly large, as many files
start with a large license stanza.

5 files changed, 35 insertions, 0 deletions

diff --git a/data/freedesktop.org.xml.in b/data/freedesktop.org.xml.in
index 2c09cdb0..68476bb3 100644
--- a/data/freedesktop.org.xml.in
+++ b/data/freedesktop.org.xml.in
@@ -7898,6 +7898,28 @@ command to generate the output files.
     <glob pattern="*.kt"/>
   </mime-type>
 
+  <mime-type type="text/x-devicetree-source">
+    <comment>Devicetree source code</comment>
+    <acronym>DTS</acronym>
+    <expanded-acronym>Device Tree Source</expanded-acronym>
+    <sub-class-of type="text/plain"/>
+    <glob pattern="*.dts"/>
+    <glob pattern="*.dtsi"/>
+    <magic>
+      <match type="string" mask="0x8080" value="\000\000" offset="0">
+        <match type="string" value="/dts-v1/" offset="0:4080"/>
+      </match>
+    </magic>
+    <magic priority="40">
+      <match type="string" mask="0x8080" value="\000\000" offset="0">
+        <match type="string" value="/ {" offset="0:4090"/>
+        <match type="string" value="include " offset="0:4080">
+          <match type="string" value=".dts" offset="10:4090"/>
+        </match>
+      </match>
+    </magic>
+  </mime-type>
+
   <mime-type type="image/avif">
     <comment>AVIF image</comment>
     <acronym>AVIF</acronym>
diff --git a/tests/mime-detection/devicetree.dtsi b/tests/mime-detection/devicetree.dtsi
new file mode 100644
index 00000000..68d518c6
--- /dev/null
+++ b/tests/mime-detection/devicetree.dtsi
@@ -0,0 +1,3 @@
+/ {
+    node { };
+};
diff --git a/tests/mime-detection/devicetree1.dts b/tests/mime-detection/devicetree1.dts
new file mode 100644
index 00000000..48772d1f
--- /dev/null
+++ b/tests/mime-detection/devicetree1.dts
@@ -0,0 +1,4 @@
+/* @ 2021 */
+/dts-v1/;
+/ {
+};
diff --git a/tests/mime-detection/devicetree2.dts b/tests/mime-detection/devicetree2.dts
new file mode 100644
index 00000000..805e6674
--- /dev/null
+++ b/tests/mime-detection/devicetree2.dts
@@ -0,0 +1 @@
+#include <foo/bar.dtsi>
diff --git a/tests/mime-detection/list b/tests/mime-detection/list
index ac907977..cb20f435 100644
--- a/tests/mime-detection/list
+++ b/tests/mime-detection/list
@@ -899,6 +899,11 @@ test.gd application/x-gdscript ox
 # Kotlin source code
 test.kt text/x-kotlin ox
 
+# Device Tree Source
+devicetree1.dts text/x-devicetree-source xoo
+devicetree2.dts text/x-devicetree-source xoo
+devicetree.dtsi text/x-devicetree-source
+
 # AV1 Image File Format (AVIF)
 # https://aomediacodec.github.io/av1-avif/
 test.avif image/avif