oauth2_proxy/configure

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#!/usr/bin/env bash
RED='\033[0;31m'
GREEN='\033[0;32m'
BLUE='\033[0;34m'
NC='\033[0m'
declare -A tools=()
declare -A desired=()
for arg in "$@"; do
case ${arg%%=*} in
"--with-go")
desired[go]="${arg##*=}"
;;
"--with-dep")
desired[dep]="${arg##*=}"
;;
"--help")
printf "${GREEN}$0${NC}\n"
printf " available options:\n"
printf " --with-dep=${BLUE}<path_to_dep_binary>${NC}\n"
printf " --with-go=${BLUE}<path_to_go_binary>${NC}\n"
exit 0
;;
*)
echo "Unknown option: $arg"
exit 2
;;
esac
done
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
}
check_for() {
echo -n "Checking for $1... "
if ! [ -z "${desired[$1]}" ]; then
TOOL_PATH="${desired[$1]}"
else
TOOL_PATH=$(command -v $1)
fi
if ! [ -x "$TOOL_PATH" -a -f "$TOOL_PATH" ]; then
printf "${RED}not found${NC}\n"
cd -
exit 1
else
printf "${GREEN}found${NC}\n"
tools[$1]=$TOOL_PATH
fi
}
check_go_version() {
echo -n "Checking go version... "
GO_VERSION=$(${tools[go]} version | ${tools[awk]} '{where = match($0, /[0-9]\.[0-9]+\.[0-9]*/); if (where != 0) print substr($0, RSTART, RLENGTH)}')
vercomp $GO_VERSION 1.11
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case $? in
0) ;&
1)
printf "${GREEN}"
echo $GO_VERSION
printf "${NC}"
;;
2)
printf "${RED}"
echo "$GO_VERSION < 1.11"
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exit 1
;;
esac
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VERSION=$(${tools[go]} version | ${tools[awk]} '{print $3}')
tools["go_version"]="${VERSION}"
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}
check_docker_version() {
echo -n "Checking docker version... "
DOCKER_VERSION=$(${tools[docker]} version | ${tools[awk]})
}
check_go_env() {
echo -n "Checking \$GOPATH... "
GOPATH="$(go env GOPATH)"
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if [ -z "$GOPATH" ]; then
printf "${RED}invalid${NC} - GOPATH not set\n"
exit 1
fi
printf "${GREEN}valid${NC} - $GOPATH\n"
}
cd ${0%/*}
if [ ! -f .env ]; then
rm .env
fi
check_for make
check_for awk
check_for go
check_go_version
check_go_env
check_for dep
check_for gometalinter
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echo
cat <<- EOF > .env
MAKE := "${tools[make]}"
GO := "${tools[go]}"
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GO_VERSION := ${tools[go_version]}
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DEP := "${tools[dep]}"
GOMETALINTER := "${tools[gometalinter]}"
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EOF
echo "Environment configuration written to .env"
cd - > /dev/null