#!/bin/sh

# When I open an image from the file manager in nsxiv (the image viewer), I want
# to be able to press the next/previous keys to key through the rest of the
# images in the same directory. This script "rotates" the content of a
# directory based on the first chosen file, so that if I open the 15th image,
# if I press next, it will go to the 16th etc. Autistic, I know, but this is
# one of the reasons that nsxiv is great for being able to read standard input.

[ -z "$1" ] && echo "usage: rotdir regex 2>&1" && exit 1
base="$(basename "$1")"
ls "$PWD" | awk -v BASE="$base" 'BEGIN { lines = ""; m = 0; } { if ($0 == BASE) { m = 1; } } { if (!m) { if (lines) { lines = lines"\n"; } lines = lines""$0; } else { print $0; } } END { print lines; }'