simple, quick and dirty netbsd standard cvs update wrapper with mail alert

update.sh

#!/bin/sh
######################################################################
# simple cvs update wrapper for netbsd                               #
######################################################################

ALERT_MAIL="yes"
ALERT_USER="root"

CVS_OPTS="-qz3"
CVS="cvs ${CVS_OPTS}"

_alert_mail() {
  if [ "${ALERT_MAIL}" = "yes" ]
  then
    test -z "${ALERT_USER}" && ALERT_USER="root"

    while read line
    do
      echo ${line}
    done 2>&1 | mail -s "cvs update - ${1} - $(date)" "${ALERT_USER}"
  fi
}

_update_cvs() {
  local path release
  path="${1}"
  test -z "${path}" && _usage

  release="${2}"
  test -z "${release}" && _usage

  cd "${path}"
  eval ${CVS} update -dP -r"${release}" \
    | _alert_mail "${path}"
}

_update_src() {
  local release
  release="${1}"
  test -z "${release}" && _usage

  _update_cvs /usr/src "${release}"
}

_update_pkgsrc() {
  local release
  release="${1}"
  test -z "${release}" && _usage
  _update_cvs /usr/pkgsrc "${release}"
}

_usage() {
  printf -- 'usage: %s [%s|%s|%s]\n' \
            "${0}" \
            'cvs $path $release' \
            'src $release' \
            'pkgsrc $release'
  exit 1
}

test -z "${1}" && _usage
arg="${1}"
shift

case "${arg}"
in
  cvs)    _update_cvs "${1}" "${2}";;
  src)    _update_src "${1}";;
  pkgsrc) _update_pkgsrc "${1}";;
  *)      _usage;;
esac