127 lines
2.7 KiB
Bash
Executable File
127 lines
2.7 KiB
Bash
Executable File
#! /bin/bash -
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# set -x
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source ./log_helpers
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if [ "${general_utils_sourced:-1}" = "1" ]; then # include only once
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readonly general_utils_sourced=${BASH_SOURCE[0]}
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# compare two strings
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equal () {
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case "$1" in
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"$2")
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return 0
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;;
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esac
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return 1 # they don't match
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}
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# check if second string is contained in first string
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contains () {
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if grep -qE "$2" <<< $1; then
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return 0
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fi
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return 1 # not contained
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}
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exec_process_substitution () {
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local func="${FUNCNAME[0]}"
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log_debug "$func:${LINENO} exec-ing [$*]"
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exec {fd}< <(eval "$@")
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local __result_code=$?
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local ps_pid=$! # remember pid of process substitution
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local __result=""
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while read __tmp <&$fd; do
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if ! [ -z "$__tmp" ]; then
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__result+=" $__tmp"
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fi
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done
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exec {fd}>&- # close fd (i.e. process substitution)
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wait $ps_pid # wait for the subshell to finish
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__result=${__result//[$'\r\n\t']/ } # remove \r\n\t from __result
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log_debug "$func:${LINENO} result=$__result"
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printf '%s' "$__result"
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return $__result_code
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}
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# exec_process_substitution 'opkg --noaction list'
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usage () {
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echo "Usage: $PROGRAM [--file config] [--?] [--help] [--version] [--dbg]"
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# UpdateController.conf"
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}
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usage_and_exit () {
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usage
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exit $1
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}
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version () {
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echo "$PROGRAM version $VERSION"
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}
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error () {
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echo "$@" 1>&2
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usage_and_exit 1
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}
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alert () {
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# usage: alert <$?> <object>
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if [ "$1" ne 0 ]; then
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echo "WARNING: $2 did not complete successfully." >&2
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exit 1
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else
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echo "INFO: $2 completed successfully" >&2
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fi
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}
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assert_s () {
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# if [ -z ${!1} ]; then
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# log_fatal "$1 not set"
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# fi
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# log_debug "$1=${!1}"
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:
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}
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assert_d () {
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# if [ ! -d ${!1} ]; then
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# log_fatal "$1 does not exist"
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# fi
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# log_debug "$1=${!1}"
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:
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}
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assert_f () {
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# if [ ! -f ${!1} ]; then
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# log_fatal "$1 does not exist"
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# fi
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#log_debug "$1=${!1}"
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:
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}
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assert_a () {
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local readonly __m="${1}[@]"
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local readonly __n=(${!__m})
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local __len=${#__n[@]}
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# if [ $__len -eq 0 ]; then
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# log_fatal "$1 not set"
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# fi
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# log_debug "$1=$__n"
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:
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}
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empty_file () {
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if [[ -f "$1" ]]; then
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echo -n "" > $1
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else
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log_error "$1 does not exist"
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fi
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}
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fi
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