C++ Library containing a lot of needful things: Stack Trace, Command Line Parser, Resource Handling, Configuration Files, Unix Command Execution, Directories, Regular Expressions, Tokenizer, Function Trace, Standard Extensions.
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160 lines
4.0 KiB
160 lines
4.0 KiB
#!/bin/bash -e |
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########################################################################################## |
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#### template for bash scripts #### START BELOW ########################################## |
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########################################################################################## |
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############################################################################ begin logging |
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# check if stdout is a terminal... |
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if test -t 1; then |
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# see if it supports colors... |
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ncolors=$(tput colors) |
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if test -n "$ncolors" && test $ncolors -ge 8; then |
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bold="$(tput bold)" |
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underline="$(tput smul)" |
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standout="$(tput smso)" |
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normal="$(tput sgr0)" |
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black="$(tput setaf 0)" |
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red="$(tput setaf 1)" |
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green="$(tput setaf 2)" |
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yellow="$(tput setaf 3)" |
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blue="$(tput setaf 4)" |
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magenta="$(tput setaf 5)" |
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cyan="$(tput setaf 6)" |
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white="$(tput setaf 7)" |
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fi |
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fi |
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append_msg() { |
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if test $# -ne 0; then |
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echo -n ": ${bold}$*" |
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fi |
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echo "${normal}" |
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} |
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# write a message |
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message() { |
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if test $# -eq 0; then |
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return |
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fi |
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echo "${bold}${while}$*${normal}" 1>&2 |
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} |
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# write a success message |
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success() { |
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echo -n "${bold}${green}success" 1>&2 |
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append_msg $* 1>&2 |
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} |
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# write a notice |
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notice() { |
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echo -n "${bold}${yellow}notice" 1>&2 |
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append_msg $* 1>&2 |
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} |
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# write a warning message |
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warning() { |
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echo -en "${bold}${red}warning" 1>&2 |
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append_msg $* 1>&2 |
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} |
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# write error message |
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error() { |
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echo -en "${bold}${red}error" 1>&2 |
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append_msg $* 1>&2 |
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} |
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# run a command, print the result and abort in case of error |
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# option: --ignore: ignore the result, continue in case of error |
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run() { |
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ignore=1 |
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while test $# -gt 0; do |
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case "$1" in |
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(--ignore) ignore=0;; |
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(*) break;; |
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esac |
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shift; |
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done |
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echo -n "${bold}${yellow}running:${white} $*${normal} … " |
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set +e |
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result=$($* 2>&1) |
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res=$? |
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set -e |
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if test $res -ne 0; then |
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if test $ignore -eq 1; then |
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error "failed with return code: $res" |
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if test -n "$result"; then |
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echo "$result" |
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fi |
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exit 1 |
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else |
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warning "ignored return code: $res" |
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fi |
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else |
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success |
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fi |
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} |
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############################################################################ error handler |
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function traperror() { |
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set +x |
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local err=($1) # error status |
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local line="$2" # LINENO |
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local linecallfunc="$3" |
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local command="$4" |
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local funcstack="$5" |
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IFS=" " |
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for e in ${err[@]}; do |
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if test -n "$e" -a "$e" != "0"; then |
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error "line $line - command '$command' exited with status: $e (${err[@]})" |
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if [ "${funcstack}" != "main" -o "$linecallfunc" != "0" ]; then |
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echo -n " ... error at ${funcstack} " 1>&2 |
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if [ "$linecallfunc" != "" ]; then |
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echo -n "called at line $linecallfunc" 1>&2 |
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fi |
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echo |
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fi |
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exit $e |
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fi |
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done |
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success |
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exit 0 |
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} |
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# catch errors |
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trap 'traperror "$? ${PIPESTATUS[@]}" $LINENO $BASH_LINENO "$BASH_COMMAND" "${FUNCNAME[@]}" "${FUNCTION}"' ERR SIGINT INT TERM EXIT |
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########################################################################################## |
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#### START HERE ########################################################################## |
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########################################################################################## |
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######################################################### commandline parameter evaluation |
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while test $# -gt 0; do |
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case "$1" in |
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(--help|-h) less <<EOF |
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SYNOPSIS |
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$0 [OPTIONS] |
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OPTIONS |
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--help, -h show this help |
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DESCRIPTION |
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EOF |
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exit;; |
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(*) error "unknow option $1, try $0 --help"; exit 1;; |
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esac |
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if test $# -eq 0; then |
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error "missing parameter, try $0 --help"; exit 1 |
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fi |
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shift; |
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done |
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##################################################################################### Main |
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