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      1 #!/bin/bash
      2 # Copyright (c) 2013 The Chromium OS Authors. All rights reserved.
      3 # Use of this source code is governed by a BSD-style license that can be
      4 # found in the LICENSE file.
      5 
      6 # Color output encodings.
      7 COL_RED='\E[31;1m'
      8 COL_GREEN='\E[32;1m'
      9 COL_YELLOW='\E[33;1m'
     10 COL_BLUE='\E[34;1m'
     11 COL_STOP='\E[0;m'
     12 
     13 # args: [message]
     14 green() {
     15   echo -e "${COL_GREEN}$*${COL_STOP}"
     16 }
     17 
     18 # args: [message]
     19 yellow() {
     20   echo -e "${COL_YELLOW}WARNING: $*${COL_STOP}"
     21 }
     22 
     23 # args: [message]
     24 red() {
     25   echo -e "${COL_RED}$*${COL_STOP}"
     26 }
     27 
     28 # args: [nested level] [message]
     29 error() {
     30   local lev=${1:-}
     31   case "${1:-}" in
     32     [0-9]*)
     33       lev=$1
     34       shift
     35       ;;
     36     *) lev=0
     37       ;;
     38   esac
     39   local x=$(caller $lev)
     40   local cline="${x%% *}"
     41   local cfile="${x#* }"
     42   cfile="${cfile##*/}"
     43   local args="$*"
     44   local spacer="${args:+: }"
     45   red "at ${cfile}, line ${cline}${spacer}${args}" 1>&2
     46   exit 1
     47 }
     48