1 files changed, 15 insertions, 0 deletions

diff --git a/utils/add_include_guard.sh b/utils/add_include_guard.sh
new file mode 100755
index 0000000..7ca10db
--- /dev/null
+++ b/utils/add_include_guard.sh
@@ -0,0 +1,15 @@
+#!/bin/sh
+
+if [ -z "$1" ]; then
+        echo "Usage: $0 [file]"
+        exit 1
+fi
+
+guard="$(echo "$1" | sed 's/^\.\///' | tr 'a-z/.' 'A-Z__')"
+
+new_file="$1.adding_include_guard"
+printf '#ifndef %s\n#define %s\n\n' "$guard" "$guard" > "$new_file"
+cat "$1" >> "$new_file"
+printf '\n#endif /* %s */\n' "$guard" >> "$new_file"
+
+mv "$new_file" "$1"