A collection of reusable bash code.

README.md

bashlib

A collection of reusable bash code.

• log: logging library

log.sh

#! /usr/bin/env bash

set -o errexit -o nounset -o pipefail -o noclobber

__log_MODULE_NAME="$(basename "${BASH_SOURCE[0]}")"
readonly __log_MODULE_NAME

__log_print() {
    local -r level_name=$1
    local -r level_color=$2
    local -r message=$3
    local -r do_color_message=${4:-false}

    local -r style_reset="\\e[0m"

    local message_part="$message"
    if [[ $do_color_message = true ]]; then
        message_part="${level_color}$message${style_reset}"
    fi

    echo -e "${style_reset}(${__log_MODULE_NAME})${level_color}${level_name}:${style_reset} ${message_part}" >&2
}

log_debug() {
    local -r message=$1

    local -r level_name=" debug"
    local -r level_color="\\e[37m"
    __log_print "$level_name" "$level_color" "$message" true
}

log_info() {
    local -r message=$1

    local -r level_name="  info"
    local -r level_color="\\e[36m"
    __log_print "$level_name" "$level_color" "$message"
}

log_warn() {
    local -r message=$1

    local -r level_name="  warn"
    local -r level_color="\\e[33m"
    __log_print "$level_name" "$level_color" "$message"
}

log_error() {
    local -r message=$1

    local -r level_name=" error"
    local -r level_color="\\e[31m"
    __log_print "$level_name" "$level_color" "$message" true
}

__log_test() {
    log_debug "pellentesque diam volutpat commodo sed"
    log_info "viverra maecenas accumsan lacus vel"
    log_warn "cursus mattis molestie a iaculis"
    log_error "ut etiam sit amet nisl"
}