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gallery.sh
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#!/usr/bin/env bash
# gallery.sh
# Author: Nils Knieling - https://github.com/Cyclenerd/gallery_shell
# Inspired by: Shapor Naghibzadeh - https://github.com/shapor/bashgal
function debugOutput(){
if [[ "$MY_DEBUG" == true ]]; then
echo -e "$1" # if debug variable is true, echo whatever's passed to the function
fi
}
#########################################################################################
#### Configuration Section
#########################################################################################
# directory where the script is located, so we can source files regardless of where PWD is
DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
: ${MY_DEBUG="true"}
# Load ENV config vars from .env file if it exists
# The .env file in the current working directory takes priority over the one in
# the gallery.sh's script folder, to allow for a "base config", and a "per-gallery" config
if [[ -f "${PWD}/.env" ]]; then
debugOutput " > Found .env file at '${PWD}/.env' - loading config vars..."
source "${PWD}/.env"
elif [[ -f "${DIR}/.env" ]]; then
debugOutput " > Found .env file at '${DIR}/.env' - loading config vars..."
source "${DIR}/.env"
fi
: ${MY_HEIGHT_SMALL=187}
: ${MY_HEIGHT_LARGE=768}
: ${MY_QUALITY=85}
# Extra extensions that should be scanned and treated as images - same as JPG and PNG
# Should be the extensions on their own, separated by spaces, e.g. MY_IMG_EXTS="webm tiff gif"
: ${MY_IMG_EXTS="webp webm apng gif tif tiff tga WEBP WEBM APNG GIF TIF TIFF TGA"}
: ${MY_THUMBDIR="__thumbs"}
: ${MY_INDEX_HTML_FILE="index.html"}
: ${MY_TITLE="Gallery"}
: ${MY_FOOTER='Created with <a href="https://github.com/Cyclenerd/gallery_shell">gallery.sh</a>'}
# Use convert from ImageMagick
: ${MY_CONVERT_COMMAND="convert" }
# Use JHead for EXIF Information
: ${MY_EXIF_COMMAND="jhead"}
# Bootstrap 4
: ${MY_CSS="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.6.0/css/bootstrap.min.css"}
# Debugging output
# true=enable, false=disable
#########################################################################################
#### End Configuration Section
#########################################################################################
MY_SCRIPT_NAME=$(basename "$0")
MY_DATETIME=$(date -u "+%Y-%m-%d %H:%M:%S")
MY_DATETIME+=" UTC"
function usage() {
MY_RETURN_CODE="$1"
echo -e "Usage: $MY_SCRIPT_NAME [-t <title>] [-d <thumbdir>] [-h]:
[-t <title>]\\t sets the title (default: $MY_TITLE)
[-d <thumbdir>]\\t sets the thumbdir (default: $MY_THUMBDIR)
[-h]\\t\\t displays help (this message)"
exit "$MY_RETURN_CODE"
}
function getFileSize(){
# Be aware that BSD stat doesn't support --version and -c
if stat --version &>/dev/null; then
# GNU
MY_FILE_SIZE=$(stat -c %s "$1" | awk '{$1/=1000000;printf "%.2fMB\n",$1}')
else
# BSD
MY_FILE_SIZE=$(stat -f %z "$1" | awk '{$1/=1000000;printf "%.2fMB\n",$1}')
fi
echo "$MY_FILE_SIZE"
}
while getopts ":t:d:h" opt; do
case $opt in
t)
MY_TITLE="$OPTARG"
;;
d)
MY_THUMBDIR="$OPTARG"
;;
h)
usage 0
;;
*)
echo "Invalid option: -$OPTARG"
usage 1
;;
esac
done
debugOutput "- $MY_SCRIPT_NAME : $MY_DATETIME"
### Check Commands
command -v $MY_CONVERT_COMMAND >/dev/null 2>&1 || { echo >&2 "!!! $MY_CONVERT_COMMAND it's not installed. Aborting."; exit 1; }
command -v $MY_EXIF_COMMAND >/dev/null 2>&1 || { echo >&2 "!!! $MY_EXIF_COMMAND it's not installed. Aborting."; exit 1; }
### Create Folders
[[ -d "$MY_THUMBDIR" ]] || mkdir "$MY_THUMBDIR" || exit 2
MY_HEIGHTS[0]=$MY_HEIGHT_SMALL
MY_HEIGHTS[1]=$MY_HEIGHT_LARGE
for MY_RES in ${MY_HEIGHTS[*]}; do
[[ -d "$MY_THUMBDIR/$MY_RES" ]] || mkdir -p "$MY_THUMBDIR/$MY_RES" || exit 3
done
#### Create Startpage
debugOutput "$MY_INDEX_HTML_FILE"
cat > "$MY_INDEX_HTML_FILE" << EOF
<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset="utf-8">
<title>$MY_TITLE</title>
<meta name="viewport" content="width=device-width">
<meta name="robots" content="noindex, nofollow">
<link rel="stylesheet" href="$MY_CSS">
</head>
<body>
<header>
<div class="navbar navbar-dark bg-dark shadow-sm">
<div class="container">
<a href="#" class="navbar-brand">
<strong>$MY_TITLE</strong>
</a>
</div>
</div>
</header>
<main class="container">
EOF
### Photos (JPG)
## Generate Images
MY_NUM_FILES=0
function generate_imgs() {
for MY_FILENAME in "$@"; do
MY_FILELIST[$MY_NUM_FILES]=$MY_FILENAME
(( MY_NUM_FILES++ ))
for MY_RES in ${MY_HEIGHTS[*]}; do
if [[ ! -s $MY_THUMBDIR/$MY_RES/$MY_FILENAME ]]; then
debugOutput "$MY_THUMBDIR/$MY_RES/$MY_FILENAME"
$MY_CONVERT_COMMAND -auto-orient -strip -quality $MY_QUALITY -resize x$MY_RES "$MY_FILENAME" "$MY_THUMBDIR/$MY_RES/$MY_FILENAME"
fi
done
cat >> "$MY_INDEX_HTML_FILE" << EOF
<div class="col">
<p>
<a href="$MY_THUMBDIR/$MY_FILENAME.html"><img src="$MY_THUMBDIR/$MY_HEIGHT_SMALL/$MY_FILENAME" alt="Thumbnail: $MY_FILENAME" class="rounded mx-auto d-block"></a>
</p>
</div>
EOF
done
}
# Generate images for JPGs / JPEGs
HAS_IMGS=0
if [[ $(find . -maxdepth 1 -type f -iname \*.jpg | wc -l) -gt 0 ]]; then
debugOutput " >>> Generating images for .JPG"
echo '<div class="row row-cols-sm-1 row-cols-md-2 row-cols-lg-3 row-cols-xl-4 py-5">' >> "$MY_INDEX_HTML_FILE"
HAS_IMGS=1
generate_imgs *.[jJ][pP][gG]
fi
if [[ $(find . -maxdepth 1 -type f -iname \*.jpeg | wc -l) -gt 0 ]]; then
debugOutput " >>> Generating images for .JPEG"
if ! (( HAS_IMGS )); then
echo '<div class="row row-cols-sm-1 row-cols-md-2 row-cols-lg-3 row-cols-xl-4 py-5">' >> "$MY_INDEX_HTML_FILE"
fi
HAS_IMGS=1
generate_imgs *.[jJ][pP][eE][gG]
fi
# Generate images for PNGs
if [[ $(find . -maxdepth 1 -type f -iname \*.png | wc -l) -gt 0 ]]; then
debugOutput " >>> Generating images for .PNG"
if ! (( HAS_IMGS )); then
echo '<div class="row row-cols-sm-1 row-cols-md-2 row-cols-lg-3 row-cols-xl-4 py-5">' >> "$MY_INDEX_HTML_FILE"
fi
HAS_IMGS=1
generate_imgs *.[pP][nN][gG]
fi
# Generate images for custom user specified extensions
if [[ -n "$MY_IMG_EXTS" ]]; then
debugOutput " >>> Generating images for user specified extensions: $MY_IMG_EXTS"
if ! (( HAS_IMGS )); then
echo '<div class="row row-cols-sm-1 row-cols-md-2 row-cols-lg-3 row-cols-xl-4 py-5">' >> "$MY_INDEX_HTML_FILE"
fi
HAS_IMGS=1
IFS=" " read -r -a img_exts <<< "$MY_IMG_EXTS"
for m in "${img_exts[@]}"; do
if [[ $(find . -maxdepth 1 -type f -name \*.${m} | wc -l) -gt 0 ]]; then
debugOutput " >>> Generating images for custom extension: .${m}"
generate_imgs *.${m}
fi
done
fi
if (( HAS_IMGS )); then
echo '</div>' >> "$MY_INDEX_HTML_FILE"
## Generate the HTML Files for Images in thumbdir
MY_FILE=0
while [[ $MY_FILE -lt $MY_NUM_FILES ]]; do
MY_FILENAME=${MY_FILELIST[$MY_FILE]}
MY_PREV=""
MY_NEXT=""
[[ $MY_FILE -ne 0 ]] && MY_PREV=${MY_FILELIST[$((MY_FILE - 1))]}
[[ $MY_FILE -ne $((MY_NUM_FILES - 1)) ]] && MY_NEXT=${MY_FILELIST[$((MY_FILE + 1))]}
MY_IMAGE_HTML_FILE="$MY_THUMBDIR/$MY_FILENAME.html"
MY_EXIF_INFO=$($MY_EXIF_COMMAND "$MY_FILENAME")
MY_FILESIZE=$(getFileSize "$MY_FILENAME")
debugOutput "$MY_IMAGE_HTML_FILE"
cat > "$MY_IMAGE_HTML_FILE" << EOF
<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset="utf-8">
<title>$MY_FILENAME</title>
<meta name="viewport" content="width=device-width">
<meta name="robots" content="noindex, nofollow">
<link rel="stylesheet" href="$MY_CSS">
</head>
<body>
<header>
<div class="navbar navbar-dark bg-dark shadow-sm">
<div class="container">
<a href="../index.html" class="navbar-brand">
<strong>$MY_TITLE</strong>
</a>
</div>
</div>
</header>
<main class="container">
EOF
# Pager
echo '<div class="row py-3"><div class="col text-left">' >> "$MY_IMAGE_HTML_FILE"
if [[ $MY_PREV ]]; then
echo '<a href="'"$MY_PREV"'.html" accesskey="p" title="⌨️ PC: [Alt]+[Shift]+[P] / MAC: [Control]+[Option]+[P]" class="btn btn-secondary " role="button">« Previous</a>' >> "$MY_IMAGE_HTML_FILE"
else
echo '<a href="#" class="btn btn-secondary disabled" role="button" aria-disabled="true">« Previous</a>' >> "$MY_IMAGE_HTML_FILE"
fi
cat >> "$MY_IMAGE_HTML_FILE" << EOF
</div>
<div class="col d-none d-md-block text-center"><h3>$MY_FILENAME</h3></div>
<div class="col text-right">
EOF
if [[ $MY_NEXT ]]; then
echo '<a href="'"$MY_NEXT"'.html" accesskey="n" title="⌨️ PC: [Alt]+[Shift]+[N] / MAC: [Control]+[Option]+[N]" class="btn btn-secondary ">Next »</a>' >> "$MY_IMAGE_HTML_FILE"
else
echo '<a href="#" class="btn btn-secondary disabled" role="button" aria-disabled="true">Next »</a>' >> "$MY_IMAGE_HTML_FILE"
fi
echo '</div></div>' >> "$MY_IMAGE_HTML_FILE"
cat >> "$MY_IMAGE_HTML_FILE" << EOF
<div class="row">
<div class="col">
<p><img src="$MY_HEIGHT_LARGE/$MY_FILENAME" class="img-fluid" alt="Image: $MY_FILENAME"></p>
</div>
</div>
<div class="row">
<div class="col">
<p><a class="btn btn-primary" href="../$MY_FILENAME">Download Original ($MY_FILESIZE)</a></p>
</div>
</div>
EOF
# EXIF
if [[ $MY_EXIF_INFO ]]; then
cat >> "$MY_IMAGE_HTML_FILE" << EOF
<div class="row">
<div class="col">
<pre>
$MY_EXIF_INFO
</pre>
</div>
</div>
EOF
fi
# Footer
cat >> "$MY_IMAGE_HTML_FILE" << EOF
</main> <!-- // main container -->
<br>
<footer class="footer mt-auto py-3 bg-light">
<div class="container">
<span class="text-muted">$MY_FOOTER - $MY_DATETIME</span>
</div>
</footer>
</body>
</html>
EOF
(( MY_FILE++ ))
done
fi
### Movies (MOV or MP4)
if [[ $(find . -maxdepth 1 -type f -iname \*.mov -o -iname '*.mp4' | wc -l) -gt 0 ]]; then
cat >> "$MY_INDEX_HTML_FILE" << EOF
<div class="row">
<div class="col">
<div class="page-header"><h2>Movies</h2></div>
</div>
</div>
<div class="row">
<div class="col">
EOF
if [[ $(find . -maxdepth 1 -type f -iname \*.mov | wc -l) -gt 0 ]]; then
for MY_FILENAME in *.[mM][oO][vV]; do
MY_FILESIZE=$(getFileSize "$MY_FILENAME")
cat >> "$MY_INDEX_HTML_FILE" << EOF
<a href="$MY_FILENAME" class="btn btn-primary" role="button">$MY_FILENAME ($MY_FILESIZE)</a>
EOF
done
fi
if [[ $(find . -maxdepth 1 -type f -iname \*.mp4 | wc -l) -gt 0 ]]; then
for MY_FILENAME in *.[mM][pP]4; do
MY_FILESIZE=$(getFileSize "$MY_FILENAME")
cat >> "$MY_INDEX_HTML_FILE" << EOF
<a href="$MY_FILENAME" class="btn btn-primary" role="button">$MY_FILENAME ($MY_FILESIZE)</a>
EOF
done
fi
echo '</div></div>' >> "$MY_INDEX_HTML_FILE"
fi
### Downloads (ZIP)
if [[ $(find . -maxdepth 1 -type f -iname \*.zip | wc -l) -gt 0 ]]; then
cat >> "$MY_INDEX_HTML_FILE" << EOF
<div class="row">
<div class="col">
<div class="page-header"><h2>Downloads</h2></div>
</div>
</div>
<div class="row">
<div class="col">
EOF
for MY_FILENAME in *.[zZ][iI][pP]; do
MY_FILESIZE=$(getFileSize "$MY_FILENAME")
cat >> "$MY_INDEX_HTML_FILE" << EOF
<a href="$MY_FILENAME" class="btn btn-primary" role="button">$MY_FILENAME ($MY_FILESIZE)</a>
EOF
done
echo '</div></div>' >> "$MY_INDEX_HTML_FILE"
fi
### Footer
cat >> "$MY_INDEX_HTML_FILE" << EOF
</main> <!-- // main container -->
<br>
<footer class="footer mt-auto py-3 bg-light">
<div class="container">
<span class="text-muted">$MY_FOOTER - $MY_DATETIME</span>
</div>
</footer>
</body>
</html>
EOF
debugOutput "= done"