vis-open

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