X-Git-Url: https://zdv2.bktei.com/gitweb/BK-2020-03.git/blobdiff_plain/335b71e1a32629a461b224075a4d83a19dd376cb..9a4c8b8875d41858afb24e33fd7672fb8771645b:/unitproc/bkt-read_stdin diff --git a/unitproc/bkt-read_stdin b/unitproc/bkt-read_stdin index 31469b3..5df787b 100644 --- a/unitproc/bkt-read_stdin +++ b/unitproc/bkt-read_stdin @@ -7,15 +7,21 @@ must() { "$@" || die "cannot $*"; } # runs args as command, reports args if comm read_stdin() { # Desc: Consumes stdin; outputs as stdout lines # Input: stdin (consumes) - # Output: stdout (newline delimited) + # Output: stdout (newline delimited) + # return 0 stdin read + # return 1 stdin not present # Example: printf "foo\nbar\n" | read_stdin - # Depends: GNU bash (version 5.1.16) - # Version: 0.0.1 + # Depends: GNU bash (version 5.1.16), GNU Coreutils 8.32 (cat) + # Version: 0.1.1 + # Attrib: Steven Baltakatei Sandoval (2024-01-29). reboil.com local input_stdin output; # Store stdin if [[ -p /dev/stdin ]]; then - input_stdin="$(cat -)"; + input_stdin="$(cat -)" || { + echo "FATAL:Error reading stdin." 1>&2; return 1; }; + else + return 1; fi; # Store as output array elements @@ -23,14 +29,14 @@ read_stdin() { if [[ -n $input_stdin ]]; then while read -r line; do output+=("$line"); - done < <(printf "%s\n" "$input_stdin"); + done < <(printf "%s\n" "$input_stdin") || { + echo "FATAL:Error parsing stdin."; return 1; }; fi; # Print to stdout printf "%s\n" "${output[@]}"; + + return 0; }; # read stdin to stdout lines -main() { - read_stdin "$@"; -}; -main "$@"; +yell "WARNING:This is a Bash function definition for read_stdin.";