unitproc/bkt-filter_no_dots

   1 #!/usr/bin/env bash
   2
   3 filter_no_dots() {
   4     # Desc: Filters stdin lines for paths with basenames that are not dotfiles
   5     # Usage: printf "foo\n" | filter_no_dots [path]
   6     # Input: stdin (consumes)
   7     #        args
   8     # Output: stdout (only outputs lines if basename is not a dotfile)
   9     # Version: 0.0.1
  10     # Depends: GNU bash (v5.1.16)
  11
  12     local input_stdin input_psarg buffer re output;
  13
  14     # Store stdin
  15     if [[ -p /dev/stdin ]]; then
  16         input_stdin="$(cat -)";
  17     fi;
  18
  19     # Store arguments
  20     if [[ $# -gt 0 ]]; then
  21         input_psarg="$*";
  22     fi;
  23
  24     # Combine as buffer array elements
  25     ## Read in stdin
  26     if [[ -n $input_stdin ]]; then
  27         while read -r line; do
  28             buffer+=("$line");
  29         done < <(printf "%s\n" "$input_stdin");
  30     fi;
  31     ## Read in positional arguments
  32     if [[ -n $input_psarg ]]; then
  33         for arg in "$@"; do
  34             buffer+=("$arg");
  35         done;
  36     fi;
  37
  38     # Form output array
  39     re="^\."; # first char is a dot
  40     while read -r line; do
  41         # Get path basename
  42         file_name="$(basename "$line")";
  43         # Add path to output if basename not a dotfile
  44         if [[ ! "$file_name" =~ $re ]]; then
  45             output+=("$line");
  46         else
  47             continue;
  48         fi;
  49     done < <( printf "%s\n" "${buffer[@]}" );
  50
  51     # Print output array to stdout
  52     printf "%s\n" "${output[@]}";
  53 }; # Filters stdin lines for paths with basenames that are not dotfiles
  54
  55 # Test
  56 printf "foo\n.bar\nbaz\n" | filter_no_dots "$HOME/.local" "$HOME/"