errcatch-function

   1 #!/bin/bash
   2 # Copyright (C) 2014 Ian Kelling
   3
   4 # Licensed under the Apache License, Version 2.0 (the "License");
   5 # you may not use this file except in compliance with the License.
   6 # You may obtain a copy of the License at
   7
   8 #     http://www.apache.org/licenses/LICENSE-2.0
   9
  10 # Unless required by applicable law or agreed to in writing, software
  11 # distributed under the License is distributed on an "AS IS" BASIS,
  12 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13 # See the License for the specific language governing permissions and
  14 # limitations under the License.
  15
  16 # on non-zero return codes outside of if/else,etc, print failure, stack trace, and exit
  17 # depends on bash-trace function
  18 errcatch() {
  19     set -E; shopt -s extdebug
  20     _err-trap() {
  21         err=$?
  22         exec >&2
  23         echo "${BASH_SOURCE[1]}:${BASH_LINENO[0]}:in \`$BASH_COMMAND' returned $err"
  24         bash-trace 2
  25         echo "$0: exiting with code $err"
  26         exit $err
  27     }
  28     trap _err-trap ERR
  29     set -o pipefail
  30 }