1 files changed, 40 insertions, 0 deletions
diff --git a/spark.sh b/spark.sh
new file mode 100755
index 0000000..b7add42
--- /dev/null
+++ b/spark.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env bash
+
+case `uname -m` in
+	x86_64|amd64) # 64 bit
+		MAX=$(( -2**63 ));
+		MIN=$(( 2**63-1 )) ;; 
+	i686|i386|x86) # 32 bit
+		MAX=$(( -2**31 ));
+		MIN=$(( 2**31-1 )) ;;
+	*) # 16 bit
+		MAX=$(( -2*15 ));
+		MIN=$(( 2*15-1 )) ;;
+esac
+
+for i in "$@"
+do
+	case $i in
+		''|*[!0-9]*) exit 1 ;;
+		*) ;;
+	esac
+
+	if [ $i -gt $MAX ]; then
+		MAX=$i
+	fi
+	if [ $i -lt $MIN ]; then
+		MIN=$i
+	fi
+done
+
+LEVELS=8
+DIFF=$(( $MAX - $MIN + 1 ))
+
+for i in "$@"
+do
+	H=$(( 1 + ($i - $MIN + 1) * ($LEVELS-1) / $DIFF ))
+
+	printf "\u258$H"
+done
+
+echo
+\ No newline at end of file