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#!/bin/sh
set -e
# Later, we're going to want to set $IFS to a single newline, so let's prepare one.
NL='
'
fatal() {
echo "$@" >&2
exit 1
}
usage() {
fatal "Usage: $(basename "$0") [-f] [-p prompt] [--] [file-pattern]
Interactively select a file to open
-f always present the given arguments, even when there is only one
-p prompt
file-pattern list of filenames and directories"
}
# print a list of filenames on stdin and distinguish directories
wrap_dirs() {
while read -r filename
do
if [ -d "$filename" ]; then
printf '%s/\n' "$filename"
else
printf '%s\n' "$filename"
fi
done
}
VIS_OPEN_LINES="${VIS_OPEN_LINES:-0}"
VIS_MENU_PROMPT=''
ALLOW_AUTO_SELECT='1'
while getopts fhp: opt; do
case "$opt" in
f)
ALLOW_AUTO_SELECT=''
;;
p)
VIS_MENU_PROMPT="$OPTARG"
;;
*)
usage
;;
esac
done
shift "$((OPTIND - 1))"
# At this point, all the remaining arguments should be the expansion of
# any globs that were passed on the command line.
if [ "$#" -eq 1 ] && [ "$ALLOW_AUTO_SELECT" = '1' ]; then
# If there were globs on the command-line, they've expanded to
# a single item, so we can just process it.
if [ -d "$1" ]; then
# Recurse and show the contents of the named directory,
# We pass -f to force the next iteration to present the
# full list, even if it's just an empty directory.
cd "$1"
IFS="$NL" # Don't split ls output on tabs or spaces.
exec "$0" -p "$VIS_MENU_PROMPT" -f "$(ls -1)"
else
# We've found a single item, and it's not a directory,
# so it must be a filename (or file-like thing) to open,
# unless the parent directory does not exist.
parentdir="$(dirname -- "$1")"
if [ -d "$parentdir" ]; then
cd "$parentdir"
printf '%s/%s\n' "$(pwd -P)" "$(basename -- "${1%\*}")"
exit 0
else
exit 1
fi
fi
fi
# At this point, we have a bunch of options we need to present to the
# user so they can pick one.
CHOICE="$(printf '%s\n' '..' "$@" | wrap_dirs | vis-menu -b -l "$VIS_OPEN_LINES" -p "$VIS_MENU_PROMPT")"
# Did they pick a file or directory? Who knows, let's let the next iteration figure it out.
exec "$0" -p "$VIS_MENU_PROMPT" -- "$CHOICE"
|
