bash_patterns/exception_handling.sh at master · Sitwon/bash_patterns · GitHub

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#!/bin/bash
set -E

trap 'catch $?' ERR EXIT

catch() {
    #trap '-' ERR EXIT
    if [ "$1" == 0 ]; then
        return
    fi

    # Print stack trace
    echo "Caught error $1 in:" >&2
    frame=0
    line="$(caller $frame 2>&1 | cut -d ' ' -f 1)"
    while [ -n "$line" ]; do
        subroutine="$(caller $frame 2>&1 | cut -d ' ' -f 2)"
        file="$(caller $frame 2>&1 | cut -d ' ' -f 3)"
        echo "From $file:$line in $subroutine" >&2
        echo "    $(sed -n ${line}p $file)" >&2
        ((frame++)) || true
        line="$(caller $frame 2>&1 | cut -d ' ' -f 1)"
    done
    echo >&2

    # Put cleanup code here

    #exit $1
}

if [ "${BASH_SOURCE}" = "${0}" ]; then
    something_else() {
        echo "foobar"
        false
    }

    do_something() {
        false
        echo "something"
        something_else
    }

    echo "begin"
    false
    do_something
    echo "end"
fi