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| 1 | +#!/usr/bin/env bash |
| 2 | + |
| 3 | +RED='\033[0;31m' |
| 4 | +GREEN='\033[0;32m' |
| 5 | +BLUE='\033[0;34m' |
| 6 | +NC='\033[0m' |
| 7 | + |
| 8 | +declare -A tools=() |
| 9 | +declare -A desired=() |
| 10 | + |
| 11 | +for arg in "$@"; do |
| 12 | + case ${arg%%=*} in |
| 13 | + "--with-go") |
| 14 | + desired[go]="${arg##*=}" |
| 15 | + ;; |
| 16 | + "--with-dep") |
| 17 | + desired[dep]="${arg##*=}" |
| 18 | + ;; |
| 19 | + "--help") |
| 20 | + printf "${GREEN}$0${NC}\n" |
| 21 | + printf " available options:\n" |
| 22 | + printf " --with-dep=${BLUE}<path_to_dep_binary>${NC}\n" |
| 23 | + printf " --with-go=${BLUE}<path_to_go_binary>${NC}\n" |
| 24 | + exit 0 |
| 25 | + ;; |
| 26 | + *) |
| 27 | + echo "Unknown option: $arg" |
| 28 | + exit 2 |
| 29 | + ;; |
| 30 | + esac |
| 31 | +done |
| 32 | + |
| 33 | +vercomp () { |
| 34 | + if [[ $1 == $2 ]] |
| 35 | + then |
| 36 | + return 0 |
| 37 | + fi |
| 38 | + local IFS=. |
| 39 | + local i ver1=($1) ver2=($2) |
| 40 | + # fill empty fields in ver1 with zeros |
| 41 | + for ((i=${#ver1[@]}; i<${#ver2[@]}; i++)) |
| 42 | + do |
| 43 | + ver1[i]=0 |
| 44 | + done |
| 45 | + for ((i=0; i<${#ver1[@]}; i++)) |
| 46 | + do |
| 47 | + if [[ -z ${ver2[i]} ]] |
| 48 | + then |
| 49 | + # fill empty fields in ver2 with zeros |
| 50 | + ver2[i]=0 |
| 51 | + fi |
| 52 | + if ((10#${ver1[i]} > 10#${ver2[i]})) |
| 53 | + then |
| 54 | + return 1 |
| 55 | + fi |
| 56 | + if ((10#${ver1[i]} < 10#${ver2[i]})) |
| 57 | + then |
| 58 | + return 2 |
| 59 | + fi |
| 60 | + done |
| 61 | + return 0 |
| 62 | +} |
| 63 | + |
| 64 | +check_for() { |
| 65 | + echo -n "Checking for $1... " |
| 66 | + if ! [ -z "${desired[$1]}" ]; then |
| 67 | + TOOL_PATH="${desired[$1]}" |
| 68 | + else |
| 69 | + TOOL_PATH=$(command -v $1) |
| 70 | + fi |
| 71 | + if ! [ -x "$TOOL_PATH" -a -f "$TOOL_PATH" ]; then |
| 72 | + printf "${RED}not found${NC}\n" |
| 73 | + cd - |
| 74 | + exit 1 |
| 75 | + else |
| 76 | + printf "${GREEN}found${NC}\n" |
| 77 | + tools[$1]=$TOOL_PATH |
| 78 | + fi |
| 79 | +} |
| 80 | + |
| 81 | +check_go_version() { |
| 82 | + echo -n "Checking go version... " |
| 83 | + GO_VERSION=$(${tools[go]} version | ${tools[awk]} '{where = match($0, /[0-9]\.[0-9]+\.[0-9]*/); if (where != 0) print substr($0, RSTART, RLENGTH)}') |
| 84 | + vercomp $GO_VERSION 1.10 |
| 85 | + case $? in |
| 86 | + 0) ;& |
| 87 | + 1) |
| 88 | + printf "${GREEN}" |
| 89 | + echo $GO_VERSION |
| 90 | + printf "${NC}" |
| 91 | + ;; |
| 92 | + 2) |
| 93 | + printf "${RED}" |
| 94 | + echo "$GO_VERSION < 1.10" |
| 95 | + exit 1 |
| 96 | + ;; |
| 97 | + esac |
| 98 | +} |
| 99 | + |
| 100 | +check_docker_version() { |
| 101 | + echo -n "Checking docker version... " |
| 102 | + DOCKER_VERSION=$(${tools[docker]} version | ${tools[awk]}) |
| 103 | +} |
| 104 | + |
| 105 | +check_go_env() { |
| 106 | + echo -n "Checking \$GOPATH... " |
| 107 | + if [ -z "$GOPATH" ]; then |
| 108 | + printf "${RED}invalid${NC} - GOPATH not set\n" |
| 109 | + exit 1 |
| 110 | + fi |
| 111 | + printf "${GREEN}valid${NC} - $GOPATH\n" |
| 112 | +} |
| 113 | + |
| 114 | +cd ${0%/*} |
| 115 | + |
| 116 | +if [ ! -f .env ]; then |
| 117 | + rm .env |
| 118 | +fi |
| 119 | + |
| 120 | +check_for make |
| 121 | +check_for awk |
| 122 | +check_for go |
| 123 | +check_go_version |
| 124 | +check_go_env |
| 125 | +check_for dep |
| 126 | + |
| 127 | +echo |
| 128 | + |
| 129 | +cat <<- EOF > .env |
| 130 | + MAKE := "${tools[make]}" |
| 131 | + GO := "${tools[go]}" |
| 132 | + DEP := "${tools[dep]}" |
| 133 | +EOF |
| 134 | + |
| 135 | +echo "Environment configuration written to .env" |
| 136 | + |
| 137 | +cd - > /dev/null |
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