3 files changed, 77 insertions, 0 deletions
diff --git a/util/style.sh b/util/style.sh
new file mode 100755
index 0000000..c892f7d
--- /dev/null
+++ b/util/style.sh
@@ -0,0 +1,77 @@
+#!/bin/sh
+
+
+# Check args
+if [ $# -lt 1 ]; then
+    echo "error: specify file"
+    exit 1
+fi
+
+if [ ! -f $1 ]; then
+    echo "error: file '$1' not found"
+    exit 1
+fi
+
+
+# Message about trailing space before EOL
+eolerrors=$(grep -n "\s$" "$1" | cut -f1 -d: | while read -r line; do
+    if [ "$line" ]; then
+        echo "$1:$line: error: whitepace before EOL"
+    fi
+done)
+
+
+# Message about non-empty last-line
+linecount=$(($(wc -l "$1" | cut -f1 -d " ") + 1))
+lastline=$(tail -n "+$linecount" $1)
+
+llerrors=$(if [ "$lastline" ]; then
+    echo "$1:$linecount: error: no EOL before EOF"
+fi)
+
+
+# Compute ranges of new lines
+count=0; start=0; next=0
+lines="$(grep -n "^$" "$1" | cut -f1 -d:)
+0"
+ranges=$(echo "$lines" | while read -r line; do
+    if [ "$line" ]; then
+        if [ $start -eq 0 ]; then
+            start="$line"; count=1; next=$(($start + 1))
+        elif [ "$line" -ne $next ]; then
+            echo $start $count
+            start="$line"; count=1; next=$(($start + 1))
+        else
+            count=$(($count + 1)); next=$(($next + 1))
+        fi
+    fi
+done)
+
+
+# Check that we have no more then 3 EOLs in the row
+fewerrors=$(echo "$ranges" | while read -r line; do
+    number=$(echo $line | cut -f1 -d " ")
+    size=$(echo $line | cut -f2 -d " ")
+    if [ $size -gt 2 ]; then
+        echo "$1:$number: error: too many EOLs"
+    fi
+done)
+
+# Print out errors
+code=0
+if [ "$eolerrors" ]; then
+    echo "$eolerrors" 1>&2
+    code=1
+fi
+
+if [ "$llerrors" ]; then
+    echo "$llerrors" 1>&2
+    code=1
+fi
+
+if [ "$fewerrors" ]; then
+    echo "$fewerrors" 1>&2
+    code=1
+fi
+
+exit $code
diff --git a/util/run-tests.sh b/util/tests.sh
index 1ee2183..1ee2183 100755
--- a/util/run-tests.sh
+++ b/util/tests.sh
diff --git a/util/trim-whitespace.sh b/util/whitespace.sh
index f661aa3..f661aa3 100755
--- a/util/trim-whitespace.sh
+++ b/util/whitespace.sh