#!/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.
# topgallery [options...] [title...] [folder...]
#
#
# Emit a self-contained picture gallery web-page using all top-level pictures
# found in the folder given, or the current folder by default. The page title
# is optional: if the first argument is an existing folder, a default title
# is used instead.
#
# The help option is `-h`, `--h`, `-help`, or `--help`.
# handle leading options
case "$1" in
-h|--h|-help|--help)
awk '/^# +topgallery /, /^$/ { gsub(/^# ?/, ""); print }' "$0"
exit 0
;;
esac
# get the page title, and the folder with the pictures
if [ $# -eq 1 ] && [ -d "$1" ]; then
# title="$(realpath .) - Pictures"
title="Picture Gallery"
folder="$(realpath "$1")"
else
title="${1:-Picture Gallery}"
[ $# -gt 0 ] && shift
folder="$(realpath "${1:-.}")"
if [ ! -d "${folder}" ]; then
printf "\e[31mno folder named \"%s\"\e[0m\n" "${folder}"
exit 1
fi
fi
# HTML-escape the page title
title="$(echo "${title}" | sed 's-\&-\&-g; s-<-\<-g; s->-\>-g')"
cat << 'EOF'
EOF
# emit page title
printf " %s\n" "${title}"
cat << 'EOF'
EOF
find "${folder}" -maxdepth 1 -type f | awk '
tolower($0) ~ /\.(gif|jpeg|jpg|png|webp)$/ {
gsub(/%/, "%25")
gsub(/"/, "%22")
path = "file://" $0
printf "![](\"%s\")
\n", path, path
}
'
cat << 'EOF'
EOF