#!/bin/bash
# --------------
# llxcfg-listvars
# --------------
#
# Utilidad para listar variables, valores, ficheros de variables ... o todo a la vez.
#
# Escrito por Luis Garcia Gisbert <garcia_luigis@gva.es> para LliureX (Mayo 2006)
#

set -e

PATH="/usr/sbin:/usr/bin:/sbin:/bin"

# VARIABLES
CONFFILE="/etc/llxcfg/llxcfg.conf"
VARS_FILENAME="10_llxcfg_setvars"

# funciones
# ---------
exit_message(){
   echo "$1" >&2
   exit 1
}
usage(){
   exit_message "$0 {--files|--names|--values|--info} [VARNAME_1 ... VARNAME_N]"
}

parse_option(){
   OPTION=" --[[:alpha:]]+ "
   RET_VALUE=""
   if `echo " $@ " |grep -q " --[[:alpha:]]\+ "` ; then
      RET_VALUE=`echo " $@ " |sed -ne "s%^.* --\([[:alpha:]]\+\) .*\$%\1%p"`
   fi
   echo "${RET_VALUE}"
}

num_values(){
   echo $#
}
	 
# MAIN PROGRAM

VARS_LIB_FILE="/usr/sbin/llxcfg-vars.sh"
[ -e ${VARS_LIB_FILE} ] || exit_message "Missing variable library file ${VARS_LIB_FILE}!!"
. ${VARS_LIB_FILE}

# Initial test

llxcfg_vars_test_CONFDIRS || exit_message "Variables directory path error !!"

# Procesa opciones
OPTION_FILTER=`parse_option "$1"`
VAR_LIST=""
if [ "$OPTION_FILTER" ]; then
   shift
fi
VAR_LIST="$@"

case "$OPTION_FILTER" in 
   files)
      if [ -z "$VAR_LIST" ]; then
         llxcfg_vars_files
      else
         FILE_LIST=`llxcfg_vars_files`
	 (for v in $VAR_LIST; do grep -l -e "^[[:blank:]]*${v}[[:blank:]]*=" ${FILE_LIST} || true; done ) | sort -u
      fi
      ;;
   names)
      if [ -z "$VAR_LIST" ]; then
         llxcfg_vars_names
      else
         sed_rules=";"
         for v in $VAR_LIST; do
            sed_rules="${sed_rules}/^${v}\$/p;"
         done
         llxcfg_vars_names |sed -ne "${sed_rules}"
      fi
      ;;
   info)
      [ "$VAR_LIST" ] || VAR_LIST=`llxcfg_vars_names`
      llxcfg_vars_info $VAR_LIST
      ;;
   values)
      [ "$VAR_LIST" ] || VAR_LIST=`llxcfg_vars_names`
      llxcfg_vars_show "`llxcfg_vars_files`" $VAR_LIST |sort -t = -k 1
      ;;
   *)
      usage
      ;;
esac
exit 0