1 files changed, 41 insertions, 0 deletions
diff --git a/dev/tools/check-eof-newline.sh b/dev/tools/check-eof-newline.sh
new file mode 100755
index 00000000..e244d9ab
--- /dev/null
+++ b/dev/tools/check-eof-newline.sh
@@ -0,0 +1,41 @@
+#!/usr/bin/env bash
+
+# Usage: check-eof-newline.sh [--fix] FILES...
+# Detect missing end of file newlines for FILES.
+# Files are skipped if untracked by git and depending on gitattributes.
+# With --fix, automatically append a newline.
+# Exit status:
+# Without --fix: 1 if any file had a missing newline, 0 otherwise.
+# With --fix: 1 if any non writable file had a missing newline, 0 otherwise.
+
+FIX=
+if [ "$1" = --fix ];
+then
+   FIX=1
+   shift
+fi
+
+CODE=0
+for f in "$@"; do
+    if git ls-files --error-unmatch "$f" >/dev/null 2>&1 && \
+           git check-attr whitespace -- "$f" | grep -q -v -e 'unset$' -e 'unspecified$' && \
+           [ -n "$(tail -c 1 "$f")" ]
+    then
+        if [ -n "$FIX" ];
+        then
+            if [ -w "$f" ];
+            then
+                echo >> "$f"
+                echo "Newline appended to file $f!"
+            else
+                echo "File $f is missing a newline and not writable!"
+                CODE=1
+            fi
+        else
+            echo "No newline at end of file $f!"
+            CODE=1
+        fi
+    fi
+done
+
+exit "$CODE"