unitproc/bkt-read_psarg

   1 #!/usr/bin/env bash
   2 # Desc: Reads positional arguments
   3
   4 yell() { echo "$0: $*" >&2; } # print script path and all args to stderr
   5 die() { yell "$*"; exit 111; } # same as yell() but non-zero exit status
   6 must() { "$@" || die "cannot $*"; } # runs args as command, reports args if command fails
   7 read_psarg() {
   8     # Desc: Reads arguments; outputs as stdout lines
   9     # Input: args
  10     # Output: stdout (newline delimited)
  11     # Example: read_psarg "$@"
  12     # Depends: GNU bash (version 5.1.16)
  13     # Version: 0.0.1
  14     local input_psarg output;
  15
  16     # Store arguments
  17     if [[ $# -gt 0 ]]; then
  18         input_psarg="$*";
  19     fi;
  20
  21     # Store as output array elements
  22     ## Read in positional arguments
  23     if [[ -n $input_psarg ]]; then
  24         for arg in "$@"; do
  25             output+=("$arg");
  26         done;
  27     fi;
  28
  29     # Print to stdout
  30     printf "%s\n" "${output[@]}";
  31 }; # read positional argument to stdout lines
  32 main() {
  33     read_psarg "$@";
  34 };
  35
  36 main "$@";