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liskak.sh
executable file
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liskak.sh
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#!/usr/bin/env bash
vercomp () {
if [[ $1 == $2 ]]
then
return 0
fi
local IFS=.
local i ver1=($1) ver2=($2)
# fill empty fields in ver1 with zeros
for ((i=${#ver1[@]}; i<${#ver2[@]}; i++))
do
ver1[i]=0
done
for ((i=0; i<${#ver1[@]}; i++))
do
if [[ -z ${ver2[i]} ]]
then
# fill empty fields in ver2 with zeros
ver2[i]=0
fi
if ((10#${ver1[i]} > 10#${ver2[i]}))
then
return 1
fi
if ((10#${ver1[i]} < 10#${ver2[i]}))
then
return 2
fi
done
return 0
}
testvercomp () {
vercomp $1 $2
case $? in
0) op='=';;
1) op='>';;
2) op='<';;
esac
if [[ $op != $3 ]]
then
return 1
else
return 0
fi
}
check_cmds() {
local cmds=("${!1}")
for i in "${cmds[@]}"; do
command -v "$i" > /dev/null 2>&1 || {
echo "Error: $i command was not found. Aborting." >&2; exit 1;
}
done
}
CMDS=("node")
check_cmds CMDS[@]
NODE_VERSION_REQUIRED="4.0.0"
NODE_VERSION=$(node -v | sed s/^v//)
testvercomp ${NODE_VERSION} ${NODE_VERSION_REQUIRED} ">"
NODE_VERSION_COMPARE=$?
if [ ${NODE_VERSION_COMPARE} -gt 0 ]; then
echo Bad node version ${NODE_VERSION}, you\'ll need at least ${NODE_VERSION_REQUIRED}
exit 2;
fi
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
cd ${DIR} && node src/liskak.js $*