1 files changed, 30 insertions, 0 deletions
diff --git a/optipng.sh.in b/optipng.sh.in
new file mode 100644
index 000000000000..344facbdd31e
--- /dev/null
+++ b/optipng.sh.in
@@ -0,0 +1,30 @@
+#!/usr/bin/bash
+#
+#   optipng.sh - Compress PNG files using optpng
+#
+
+[[ -n "$LIBMAKEPKG_TIDY_OPTIPNG_SH" ]] && return
+LIBMAKEPKG_TIDY_OPTIPNG_SH=1
+
+LIBRARY=${LIBRARY:-'@libmakepkgdir@'}
+
+source "$LIBRARY/util/message.sh"
+source "$LIBRARY/util/option.sh"
+
+packaging_options+=('optipng')
+tidy_modify+=('tidy_optipng')
+
+tidy_optipng() {
+  if check_option "optipng" "y"; then
+    msg2 "$(gettext "Optimizing PNG images...")"
+    local png
+    find . -type f -iname "*.png" 2>/dev/null | while read -r png ; do
+      [ $(jobs -p|wc -l) -gt $(getconf _NPROCESSORS_ONLN) ] && wait -n
+      if [[ $(file --brief --mime-type "$png") = 'image/png' ]]; then
+        { optipng "${OPTIPNGFLAGS[@]}" "$png" &>/dev/null ||
+        warning "$(gettext "Could not optimize PNG image : %s")" "${png/$pkgdir\//}"; } &
+      fi
+    done
+    wait
+  fi
+}