script to pre-compress all included graphics

tools/png-pre-compress

@@ -0,0 +1,22 @@
+#!/usr/bin/env sh
+
+set -e
+set -x
+
+for f in $(dirname $0)/../metadata/*/*/*/*.jp*g; do
+    exiftool -all= $f
+done
+
+for f in `find $(dirname $0)/../metadata -type f -name \*.png`; do
+    echo $f | grep -Eo '\.9\.png$' && continue  # do not optimized 9-patch, it breaks them
+    tmpfile=$(mktemp)
+    aapt singleCrunch -v -i $f -o $tmpfile
+    exiftool -all= $tmpfile
+    mv $tmpfile $f
+done
+
+for f in metadata/*/*/*Screenshots/*.png; do
+    exiftool -all= $f
+    tmpfile=$(mktemp)
+    (zopflipng --filters=01234mepb --lossy_8bit --lossy_transparent -y $f $tmpfile && mv $tmpfile $f) &
+done