New script to autonomously keep web gallery uptodate.

1 files changed, 112 insertions, 0 deletions

diff --git a/localwebgallerydaemon b/localwebgallerydaemon
new file mode 100755
index 0000000..f0bc0d1
--- /dev/null
+++ b/localwebgallerydaemon
@@ -0,0 +1,112 @@
+#!/bin/sh
+#
+# /usr/local/bin/localwebgalleryupdate
+# Copyright 2008 Jonas Smedegaard <dr@jones.dk>
+#
+# $Id: localwebgallerydaemon,v 1.1 2008-03-18 23:22:03 jonas Exp $
+#
+# (Re)generate web gallery whenever source directory changes
+#
+# TODO: Implement options:
+#   --help
+#   --sourcedir
+#   --targetdir
+#   --run-once
+#   --now
+#   --verbose
+#   --debug
+#   --init (create targetdir if missing, fail if exists and non-empty)
+#
+# TODO: implement ask() and the following options:
+#   --reset (purge output dir -- use with --init to always build from scratch)
+#   --force
+#
+# TODO: Support more gallery engines
+#
+# TODO: Support overriding defaults in rc-file
+#
+
+set -e
+#set -bm
+
+# Defaults options
+SOURCEDIR="$HOME/public_media"
+TARGETDIR="$HOME/public_html/gallery"
+GENERATOR="lazygal"
+THEME="image-index"
+
+# Use defaults if not overridden
+sourcedir="${1:-$SOURCEDIR}"
+targetdir="${2:-$TARGETDIR}"
+
+PRG=$(basename "$0")
+
+# Required external programs
+EXTPRG="/usr/bin/fileschanged"
+case $GENERATOR in
+    lazygal)
+    	EXTPRG="$EXTPRG /usr/bin/$GENERATOR"
+	;;
+esac
+
+showhelp() {
+	cat <<EOF
+Usage:   $PRG [ SOURCEDIR ] [ TARGETDIR ]
+
+Defaults:
+    SOURCEDIR:  $SOURCEDIR
+    TARGETDIR:  $TARGETDIR
+
+Examples:
+    $PRG ~/my/images /var/www/gallery &
+    daemon -u me -n gallery-me -- $PRG ~/my/images /var/www/gallery
+EOF
+}
+
+exit1()	{
+	echo >&2 "Error: $1"
+	echo >&2 "Exiting..."
+	exit 1
+}
+
+lazygal_opts="--quiet --check-all-dirs --clean-destination ${THEME:+--theme $THEME}"
+
+# Sanity checks
+[ -d "$sourcedir" ] || exit1 "Source directory \"$sourcedir\" is not a directory"
+[ -d "$targetdir" ] || exit1 "Target directory \"$targetdir\" is not a directory"
+for prg in $EXTPRG; do
+	[ -x "$prg" ] || exit1 "Required program \"$prg\" not installed"
+done
+
+updategallery() {
+	onemoretime=yes
+	trap 'onemoretime=yes' USR1
+	while [ -n "$onemoretime" ]; do
+		onemoretime=
+		case "$GENERATOR" in
+		    lazygal)
+			lazygal $lazygal_opts -o "$targetdir" "$sourcedir"
+			;;
+		esac
+		sleep 10
+	done
+}
+
+pid=
+fileschanged -r -s created,changed,deleted "$sourcedir" | while read file; do
+
+	# Ignore hidden files (used for temporary files by rsync)
+	case "$file" in
+	    .*)
+		continue
+		;;
+	esac
+
+	# Invoke update if not active or telling to take another spin fails
+	if [ -z "$progress" ] || ! kill -USR1 $(jobs -p) 2>/dev/null; then
+		progress=yes
+		updategallery &
+	fi
+done
+
+exit 0