1 files changed, 121 insertions, 0 deletions
diff --git a/build/image-optimization.sh b/build/image-optimization.sh
new file mode 100755
index 00000000000..ddb213ea5bb
--- /dev/null
+++ b/build/image-optimization.sh
@@ -0,0 +1,121 @@
+#!/usr/bin/env bash
+#
+# SPDX-FileCopyrightText: 2017 Nextcloud GmbH and Nextcloud contributors
+# SPDX-License-Identifier: AGPL-3.0-or-later
+#
+set -e
+
+OPTIPNG=$(which optipng)
+if ! [ -x "$OPTIPNG" ]; then
+	echo -e "\033[0;31moptipng executable not found, please install\033[0m" >&2
+	exit 1
+fi
+JPEGOPTIM=$(which jpegoptim)
+if ! [ -x "$JPEGOPTIM" ]; then
+	echo -e "\033[0;31mjpegoptim executable not found, please install\033[0m" >&2
+	exit 2
+fi
+SCOUR=$(which scour)
+if ! [ -x "$SCOUR" ]; then
+	echo -e "\033[0;31mscour executable not found, please install\033[0m" >&2
+	exit 3
+fi
+
+REQUIRED_SCOUR_VERSION="0.38.2"
+SCOUR_VERSION=$(scour --version)
+if dpkg --compare-versions $SCOUR_VERSION lt $REQUIRED_SCOUR_VERSION; then
+	echo "scour version $REQUIRED_SCOUR_VERSION or higher is required, found $SCOUR_VERSION" >&2
+	exit 3
+fi
+
+set +e
+
+CHECK_DIR='../'
+if [[ -d "$1" ]]; then
+	CHECK_DIR=$1
+fi
+
+function recursive_optimize_images() {
+	cd "$1" || return
+	DIR_NAME=${PWD##*/}
+
+	if [[ "$DIR_NAME" == "3rdparty" ]]; then
+		echo -e "\033[0;36mIgnoring 3rdparty for image optimization\033[0m"
+		return
+	elif [[ "$DIR_NAME" == "build" ]]; then
+		echo -e "\033[0;36mIgnoring build for image optimization\033[0m"
+		return
+	elif [[ "$DIR_NAME" == "cypress" ]]; then
+		echo -e "\033[0;36mIgnoring cypress for image optimization\033[0m"
+		return
+	elif [[ "$DIR_NAME" == "node_modules" ]]; then
+		echo -e "\033[0;36mIgnoring node_modules for image optimization\033[0m"
+		return
+	elif [[ "$DIR_NAME" == "tests" ]]; then
+		echo -e "\033[0;36mIgnoring tests for image optimization\033[0m"
+		return
+	elif [[ "$DIR_NAME" == "vendor" ]]; then
+		echo -e "\033[0;36mIgnoring vendor for image optimization\033[0m"
+		return
+	elif [[ "$DIR_NAME" == "vendor-bin" ]]; then
+		echo -e "\033[0;36mIgnoring vendor-bin for image optimization\033[0m"
+		return
+	fi
+
+	# Optimize all PNGs
+	for png in *.png
+	do
+		[[ -e "$png" ]] || break
+
+		$OPTIPNG -o6 -strip all "$png"
+	done
+
+	# Optimize all JPGs
+	for jpg in *.jpg
+	do
+		[[ -e "$jpg" ]] || break
+
+		$JPEGOPTIM --strip-all "$jpg"
+	done
+
+	# Optimize all SVGs
+	for svg in *.svg
+	do
+		[[ -e "$svg" ]] || break
+
+		if [[ "$svg" == "default-source.svg" ]]; then
+			echo -e "\033[0;36mIgnoring $svg image optimization\033[0m"
+			continue
+		fi
+
+		mv $svg $svg.opttmp
+		$SCOUR --create-groups \
+			--enable-id-stripping \
+			--enable-comment-stripping \
+			--shorten-ids \
+			--remove-metadata \
+			--strip-xml-prolog \
+			--no-line-breaks  \
+			-i $svg.opttmp \
+			-o $svg
+		rm $svg.opttmp
+	done
+
+	# Check all subfolders
+	for dir in */
+	do
+		[[ -e "$dir" ]] || break
+
+		if [[ -d "$dir" ]]; then
+			if git check-ignore $dir -q ; then
+				echo -e "\033[0;36m$dir is not shipped. Ignoring image optimization\033[0m"
+				continue
+			fi
+
+			recursive_optimize_images "$dir"
+			cd ..
+		fi
+	done
+}
+
+recursive_optimize_images "$CHECK_DIR"