vis-open

   1 #!/bin/sh
   2 set -e
   3
   4 # Later, we're going to want to set $IFS to a single newline, so let's prepare one.
   5 NL='
   6 '
   7
   8 if [ -z "$VIS_OPEN_LINES" ]; then
   9         VIS_OPEN_LINES='0'
  10 fi
  11
  12 VIS_MENU_PROMPT=''
  13 ALLOW_AUTO_SELECT='1'
  14
  15 wrap_dirs() {
  16         while read -r filename
  17         do
  18                 if [ -d "$filename" ]; then
  19                         printf '%s/\n' "$filename"
  20                 else
  21                         printf '%s\n' "$filename"
  22                 fi
  23         done
  24 }
  25
  26 while getopts fhp: opt; do
  27         case "$opt" in
  28         f)
  29                 ALLOW_AUTO_SELECT=''
  30                 ;;
  31         p)
  32                 VIS_MENU_PROMPT="$OPTARG"
  33                 ;;
  34         h|?)
  35                 printf 'usage: %s [-f] [-h] [-p prompt] [--] [file-pattern]\n' "${0##*/}"
  36                 exit 0
  37                 ;;
  38         esac
  39 done
  40 shift "$((OPTIND - 1))"
  41
  42 # At this point, all the remaining arguments should be the expansion of
  43 # any globs that were passed on the command line.
  44
  45 if [ "$#" -eq 1 ] && [ "$ALLOW_AUTO_SELECT" = '1' ]; then
  46         # If there were globs on the command-line, they've expanded to
  47         # a single item, so we can just process it.
  48
  49         if [ -d "$1" ]; then
  50                 # Recurse and show the contents of the named directory,
  51                 # We pass -f to force the next iteration to present the
  52                 # full list, even if it's just an empty directory.
  53                 cd "$1"
  54                 IFS="$NL"  # Don't split ls output on tabs or spaces.
  55                 exec "$0" -p "$VIS_MENU_PROMPT" -f "$(ls -1)"
  56         else
  57                 # We've found a single item, and it's not a directory,
  58                 # so it must be a filename (or file-like thing) to open,
  59                 # unless the parent directory does not exist.
  60                 parentdir="$(dirname -- "$1")"
  61                 if [ -d "$parentdir" ]; then
  62                         cd "$parentdir"
  63                         printf '%s/%s\n' "$(pwd -P)" "$(basename -- "${1%\*}")"
  64                         exit 0
  65                 else
  66                         exit 1
  67                 fi
  68         fi
  69 fi
  70
  71 # At this point, we have a bunch of options we need to present to the
  72 # user so they can pick one.
  73 CHOICE="$(printf '%s\n' '..' "$@" | wrap_dirs | vis-menu -b -l "$VIS_OPEN_LINES" -p "$VIS_MENU_PROMPT")"
  74
  75 # Did they pick a file or directory? Who knows, let's let the next iteration figure it out.
  76 exec "$0" -p "$VIS_MENU_PROMPT" -- "$CHOICE"