File: go-main-stubs

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golang-github-alecthomas-assert 2.10.0-1
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#!/bin/bash
#
#
# This script generates stub scripts for every Go "main" package in this
# repository. These stubs execute the corresponding main package via "go run".
#

set -euo pipefail

usage() {
  echo "$(basename $0) [-c] -- create or clean Go main stub scripts"
  exit 1
}

bindir="$(dirname $0)"
root="$(dirname "${bindir}")"

clean() {
  grep -l "^# go-main-stubs stub script" "${bindir}"/* | grep -v bin/go-main-stubs | xargs rm || true
}

while getopts ":hc" arg; do
  case $arg in
    c)
      echo "Cleaning old stubs"
      clean
      exit 0
      ;;
    h | *)
      usage
      exit 0
      ;;
  esac
done

clean

echo "Creating Go main stubs in ${bindir}"

echo -n .

for main in $(cd "${root}" && go list -f '{{if eq "main" .Name}}{{.ImportPath}}{{end}}' ./...); do
  stub_script="${bindir}/$(basename $main)"
  cat << EOF > ${stub_script}
#!/bin/bash
# go-main-stubs stub script
exec "\$(dirname \$0)/go" run $main "\$@"
EOF
  chmod +x "${stub_script}"
  echo -n .
done
echo