lib/log.sh

   1 export TERM=${TERM:-linux}
   2 readonly tput_rev=${nocolor:-$(tput rev)}
   3 readonly tput_sgr0=${nocolor:-$(tput sgr0)}
   4 readonly tput_bold=${nocolor:-$(tput bold)}
   5 readonly tput_setaf_0=${nocolor:-$(tput setaf 0)}
   6 readonly tput_setaf_1=${nocolor:-$(tput setaf 1)}
   7 readonly tput_setaf_2=${nocolor:-$(tput setaf 2)}
   8 readonly tput_setaf_3=${nocolor:-$(tput setaf 3)}
   9
  10 info () {
  11         local -
  12         set +x
  13         printf >&2 "%sINFO%s" "$tput_setaf_2" "$tput_sgr0"
  14         local comment="$1"
  15         shift
  16         local var
  17         for var in "$@"
  18          do
  19                 local val="$(eval printf %s "\"\${$var:-}\"" || false)" || false
  20                 printf >&2 ": %s%s%s=%s%s%s" "$tput_bold$tput_setaf_0" "$var" "$tput_sgr0" "$tput_rev" "$val" "$tput_sgr0"
  21          done
  22         printf >&2 ": %s%s%s\n" "$tput_rev" "$comment" "$tput_sgr0"
  23  }
  24 error () {
  25         local -
  26         set +x
  27         printf >&2 "%sERROR%s" "$tput_setaf_1" "$tput_sgr0"
  28         local errno="$1"
  29         local comment="$2"
  30         shift 2
  31         local var
  32         for var in "$@"
  33          do
  34                 local val="$(eval printf %s "\"\${$var:-}\"" || false)" || false
  35                 printf >&2 ": %s%s%s=%s%s%s" "$tput_bold$tput_setaf_0" "$var" "$tput_sgr0" "$tput_bold$tput_setaf_0" "$val" "$tput_sgr0"
  36          done
  37         printf >&2 ": %s%s%s\n" "$tput_rev" "$comment" "$tput_sgr0"
  38         exit $errno
  39  }
  40 assert () {
  41         local -
  42         set +x
  43         local eval="$1"; shift
  44         local type="assertion failure"
  45         eval "$eval" ||
  46         error $? "$eval" type "$@"
  47  }