tools/meson-check-help.sh

   1 #!/bin/sh -eu
   2
   3 export SYSTEMD_LOG_LEVEL=info
   4
   5 # output width
   6 if "$1"  --help | grep -v 'default:' | grep -E -q '.{80}.'; then
   7         echo "$(basename "$1") --help output is too wide:"
   8         "$1"  --help | awk 'length > 80' | grep -E --color=yes '.{80}'
   9         exit 1
  10 fi
  11
  12 # no --help output to stdout
  13 if "$1" --help 2>&1 1>/dev/null | grep .; then
  14         echo "$(basename "$1") --help prints to stderr"
  15         exit 2
  16 fi
  17
  18 # error output to stderr
  19 if ! "$1" --no-such-parameter 2>&1 1>/dev/null | grep -q .; then
  20         echo "$(basename "$1") with an unknown parameter does not print to stderr"
  21         exit 3
  22 fi