solidity/scripts/common.sh

#!/usr/bin/env bash
# ------------------------------------------------------------------------------
# vim:ts=4:et
# This file is part of solidity.
#
# solidity is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# solidity is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with solidity.  If not, see <http://www.gnu.org/licenses/>
#
# (c) 2016-2019 solidity contributors.
# ------------------------------------------------------------------------------

if [ "$CIRCLECI" ]
then
    export TERM="${TERM:-xterm}"
    function printTask() { echo "$(tput bold)$(tput setaf 2)$1$(tput setaf 7)"; }
    function printError() { >&2 echo "$(tput setaf 1)$1$(tput setaf 7)"; }
    function printWarning() { >&2 echo "$(tput setaf 11)$1$(tput setaf 7)"; }
    function printLog() { echo "$(tput setaf 3)$1$(tput setaf 7)"; }
else
    function printTask() { echo "$(tput bold)$(tput setaf 2)$1$(tput sgr0)"; }
    function printError() { >&2 echo "$(tput setaf 1)$1$(tput sgr0)"; }
    function printWarning() { >&2 echo "$(tput setaf 11)$1$(tput sgr0)"; }
    function printLog() { echo "$(tput setaf 3)$1$(tput sgr0)"; }
fi

safe_kill()
{
    local PID=${1}
    local NAME=${2:-${1}}
    local n=1

    # only proceed if $PID does exist
    kill -0 "$PID" 2>/dev/null || return

    echo "Sending SIGTERM to ${NAME} (${PID}) ..."
    kill "$PID"

    # wait until process terminated gracefully
    while kill -0 "$PID" 2>/dev/null && [[ $n -le 4 ]]; do
        echo "Waiting ($n) ..."
        sleep 1
        n=$((n + 1))
    done

    # process still alive? then hard-kill
    if kill -0 "$PID" 2>/dev/null; then
        echo "Sending SIGKILL to ${NAME} (${PID}) ..."
        kill -9 "$PID"
    fi
}