small doc update

[errhandle.git] / errcatch-function

#!/bin/bash
# Copyright (C) 2014 Ian Kelling

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at

#     http://www.apache.org/licenses/LICENSE-2.0

# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

errcatch() {
    set -E; shopt -s extdebug
    _err-trap() {
        err=$?
        exec >&2
        set +x
        echo "${BASH_SOURCE[1]}:${BASH_LINENO[0]}:in \`$BASH_COMMAND' returned $err"
        bash-trace 2
        echo "$0: exiting with code $err"
        exit $err
    }
    trap _err-trap ERR
    set -o pipefail
}