nux-env/inc/nux-base.inc.sh

## #nux-base - NUX Script Base library

readonly NUX_INC_DIR=$(dirname $(realpath  ${BASH_SOURCE[0]}))
readonly NUX_ENV_DIR=$(dirname $NUX_INC_DIR)

# Color definitions

readonly nc_bold=`tput setaf 0`
readonly nc_bg_bold=`tput setab 0`
readonly nc_black=`tput setab 0`
readonly nc_bg_black=`tput setab 0`
readonly nc_cyan=`tput setaf 6`
readonly nc_bg_cyan=`tput setab 6`
readonly nc_magenta=`tput setaf 5`
readonly nc_bg_magenta=`tput setab 5`
readonly nc_red=`tput setaf 1`
readonly nc_bg_red=`tput setab 1`
readonly nc_white=`tput setaf 7`
readonly nc_bg_white=`tput setab 7`
readonly nc_green=`tput setaf 2`
readonly nc_bg_green=`tput setab 2`
readonly nc_yellow=`tput setaf 3`
readonly nc_bg_yellow=`tput setab 3`
readonly nc_blue=`tput setaf 4`
readonly nc_bg_blue=`tput setab 4`
readonly nc_end=`tput sgr0`

readonly NC_Bold=`tput bold`
readonly NC_No=`tput sgr0` # No Color
readonly NC_Black='\033[0;30m'
readonly NC_Green='\033[0;32m'
readonly NC_Red=$nc_bold$nc_red
readonly NC_BrownOrange='\033[0;33m'
readonly NC_Blue='\033[0;34m'
readonly NC_Purple='\033[0;35m'
readonly NC_Cyan='\033[0;36m'
readonly NC_LightGray='\033[0;37m'
readonly NC_DarkGray='\033[1;30m'
readonly NC_LightRed='\033[1;31m'
readonly NC_LightGreen='\033[1;32m'
readonly NC_Yellow=$nc_yellow
readonly NC_LightBlue='\033[1;34m'
readonly NC_LightPurple='\033[1;35m'
readonly NC_LightCyan='\033[1;36m'
readonly NC_White=$nc_white

readonly NC_error=$NC_Red
## #Public functions:
##
## ##Logging

# Color for message levels
NC_LOG_color_info=$NC_LightGray
NC_LOG_color_error=$NC_LightRed
NC_LOG_color_warning=$NC_Yellow
NC_LOG_color_debug=$NC_White

NC_LOG_current=3

NC_LOG_id_none=0
NC_LOG_id_error=1
NC_LOG_id_warning=2
NC_LOG_id_info=3
NC_LOG_id_debug=4
NC_LOG_id_trace=5

##
## NUX Script environment provides basic logging capabilities.
##
## Currently there are 5 log levels supported (in order of detail):
##   error
##   warning
##   info
##   debug
##   trace
##
## nux.log:: <level> <message>
##     Outputs log message to *STDERR*. LOG messages are filtered out based on
##     level. Use *nux.log.level* to specify which messages should be displayed.
##
##
function nux.log {
  local level=$1
  local message=$2
  local color=NC_LOG_color_$level
  local level_num=NC_LOG_id_$level
  shift;
  if [  ${!level_num} -le $NC_LOG_current  ]; then
    echo -e "${!color}[$level]$NC_No $*$NC_No" >&2
  fi
}


## nux.log.level:: <level>
##     Sets maximum level of details to be logged.
##
function  nux.log.level {
  local level=$1
  local level_id=NC_LOG_id_$level
  NC_LOG_current=${!level_id}
}

function nux.echo.error {
	echo "${NC_error}$* ${NC_No}";
}

function nux.echo.warning {
	echo -e "${NC_warning}"$@" ${NC_No}";
}

## nux.use:: <library>
function nux.use {
  local incfile="$1.inc.sh"
  source "$NUX_INC_DIR/$incfile"
}

function nux.fatal {
  echo "$@";
  exit -1;
}

## nux.notimplemented:: <feature-id>
function nux.notimplemented {
  nux.fatal "$@: is not imlemented."
}

## nux.require:: <binary> [<common-package>]
function nux.require {
  local binary=$1;
  local package=${2:-$1}
  if nux.check.exec "$binary" ; then
    :
  else
    nux.fatal $1 is not present. Please check if $package is installed.
  fi

}

function nux.include {
  local incfile="$1.inc.sh"
  source "$NUX_INC_DIR/$incfile"
}

## nux.check.function:: <name>
##
function nux.check.function {
  nux.log trace "Checking if $1 is function."
  declare -f "$1" &>/dev/null && return 0
  return 1
}

function nux.check.nuxenv.file {
  path=$(realpath -Lms "$1")
  [[ "$path" =~ "^$NUX_ENV_DIR" ]]
}

function nux.check.exec {
  local binary=$1;
  test -n "$(which "$binary")"
}

## nux.check.file.exists:: <name>
##
function nux.check.file.exists {
	test -e "$1" -o -h "$1";
}

function nux.eval {
  nux.log trace Going to evaluate "$@"
  eval "$@"
}

## nux.exec.optional:: <name> [<arguments>]
##
function nux.exec.optional {
  local FUNC="$1"; shift;
  if nux.check.function $FUNC; then
    nux.log trace  Executing optional: ${NC_White}${FUNC}${NC_No} "$@";
    $FUNC "$@"
  fi
}

function nux.dirty.urlencode {
    echo -n "$1" | sed "s/ /%20/g"
}

function nux.help.comment {
  local source="$1"
  if nux.check.file.exists "$source" ; then
    grep -E "^\#\#( |$)" "$source" \
      | cut -d\# -f3- \
      | cut -d" " -f2- \
      | nux.help.shelldoc
  fi
}

function nux.help.shelldoc {
  sed -r \
    -e "s/^## ?(.*)/${NC_White}\1${NC_No}/gI" \
    -e "s/^# ?(.*)/${NC_Bold}\1${NC_No}/gI" \
    -e "s/^([ a-z0-9.-_]*)::/${NC_Bold}\1${NC_No}/gI" \
    -e "s/\*\*([^*]*)\*\*/${NC_Bold}\1${NC_No}/gI"  \
    -e "s/\*([^*]*)\*/${NC_White}\1${NC_No}/gI"  \
    --
}

function nux.url.parse {
  format=${2:-"protocol:\2\nuser:\4\nhost:\5\nport:\7 \npath:\8"}
  echo "$1" | sed \
    -re "s/(([^:\/]*):\/\/)?(([^@\/:]*)@)?([^:\/]+)(:([0-9]+))?(\/(.*))?/$format/g"

}