lib/log.sh

   1 #!/bin/sh
   2
   3 export TERM=${TERM:-linux}
   4 readonly tput_rev=${nocolor:-$(tput rev)}
   5 readonly tput_sgr0=${nocolor:-$(tput sgr0)}
   6 readonly tput_bold=${nocolor:-$(tput bold)}
   7 readonly tput_setaf_0=${nocolor:-$(tput setaf 0)}
   8 readonly tput_setaf_1=${nocolor:-$(tput setaf 1)}
   9 readonly tput_setaf_2=${nocolor:-$(tput setaf 2)}
  10 readonly tput_setaf_3=${nocolor:-$(tput setaf 3)}
  11
  12 info () {
  13         local -
  14         set +x
  15         printf >&2 "%sINFO%s" "$tput_setaf_2" "$tput_sgr0"
  16         local comment="$1"
  17         shift
  18         local var
  19         for var in "$@"
  20          do
  21                 local val="$(eval printf %s "\"\${$var:-}\"" || false)" || false
  22                 printf >&2 ": %s%s%s=%s%s%s" "$tput_bold$tput_setaf_0" "$var" "$tput_sgr0" "$tput_bold$tput_setaf_0" "$val" "$tput_sgr0"
  23          done
  24         printf >&2 ": %s%s%s\n" "$tput_rev" "$comment" "$tput_sgr0"
  25  }
  26 error () {
  27         local -
  28         set +x
  29         printf >&2 "%sERROR%s" "$tput_setaf_1" "$tput_sgr0"
  30         local errno="$1"
  31         local comment="$2"
  32         shift 2
  33         local var
  34         for var in "$@"
  35          do
  36                 local val="$(eval printf %s "\"\${$var:-}\"" || false)" || false
  37                 printf >&2 ": %s%s%s=%s%s%s" "$tput_bold$tput_setaf_0" "$var" "$tput_sgr0" "$tput_bold$tput_setaf_0" "$val" "$tput_sgr0"
  38          done
  39         printf >&2 ": %s%s%s\n" "$tput_rev" "$comment" "$tput_sgr0"
  40         exit $errno
  41  }
  42 assert () {
  43         local -
  44         set +x
  45         local eval="$1"; shift
  46         local type="assertion failure"
  47         eval "$eval" ||
  48         error $? "$eval" type "$@"
  49  }