From e892d57dfaea6bf2391b8a015b57d48b8d84d415 Mon Sep 17 00:00:00 2001
From: Glenn Randers-Pehrson <glennrp at users.sourceforge.net>
Date: Mon, 11 Mar 2013 18:26:14 -0500
Subject: [PATCH] [pngzop] Deleted picksmaller (no longer used); added
 try-pngzop script

---
 picksmaller | 20 --------------------
 try-pngzop  | 28 ++++++++++++++++++++++++++++
 2 files changed, 28 insertions(+), 20 deletions(-)
 delete mode 100755 picksmaller
 create mode 100755 try-pngzop

diff --git a/picksmaller b/picksmaller
deleted file mode 100755
index e80697b8e..000000000
--- a/picksmaller
+++ /dev/null
@@ -1,20 +0,0 @@
-#!/bin/sh
-
-# For use in the pngzop project
-# Copyright 2013 by Glenn Randers-Pehrson
-# Released under the pngcrush license (equivalent to the libpng license)
-
-# Selects the smaller of file.zdat (extracted from a PNG) or
-# file.idat.zlib (same but recompressed with zopfli)
-
-# picksmaller *.zdat
-
-for file in $*
-do
-file1=$1
-file2=`echo $file1 | sed -e "s/zdat/idat.zlib/"`
-shift
-
-ls -S $file1 $file2 | tail -1
-
-done
diff --git a/try-pngzop b/try-pngzop
new file mode 100755
index 000000000..fc43c7aa1
--- /dev/null
+++ b/try-pngzop
@@ -0,0 +1,28 @@
+#!/bin/sh
+
+# try-pngzop
+
+# usage: try-pngzop dir ...
+
+# runs pngzop on each PNG file in a set of directories
+
+# For use in the pngzop project
+# Copyright 2013 by Glenn Randers-Pehrson
+# Released under the pngcrush license (equivalent to the libpng license)
+
+# From a PNG file, finds the smallest resulting compressed IDAT
+# data from zopfli compression of filter types 0 through 4 and
+# "adaptive" (f5) filtering.
+
+for dir in $*
+do
+(
+    cd $dir
+    for n in *.png
+    do
+        pngzop $n > $n.zop
+        pngcrush -brute -force $n $n.bf.png
+        pngzdat $n.bf.png
+    done
+)
+done