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|
#!/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
echo "Checking file" $1
# Message about trailing space before EOL
eolerrors=$(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 "$1" | xargs | cut -f1 -d " ") + 1))
lastline=$(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
|
