#!/bin/sh
# The MIT License (MIT)
#
# Copyright © 2020-2025 pacman64
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the “Software”), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
# sosher [options...] [files/folders...]
#
# SOng SHuffler makER emits a self-contained web-page which plays songs
# in shuffle mode.
#
# The playlist items are given as arguments: any folders given imply all
# files in them, digging recursively into any subfolders. All non-existing
# files given are simply ignored, with no error/warning.
#
# The options are, available in single and double-dashed versions
#
# -h show this help message
# -help show this help message
#
# -t use next argument as the web-page title
# -title use next argument as the web-page title
title="Song Shuffler"
case "$1" in
-h|--h|-help|--help)
awk '/^# +sosher /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
exit 0
;;
-t|--t|-title|--title)
if [ $# -gt 1 ]; then
title="$2"
shift
fi
shift
;;
esac
[ "$1" = "--" ] && shift
# make page title an HTML-safe/escaped string
title="$(echo "${title}" | sed 's-\&-\&-g; s-<-\<-g; s->-\>-g')"
cat << 'EOF'
EOF
printf " %s\n" "${title}"
cat << 'EOF'
EOF