1 files changed, 86 insertions, 0 deletions
diff --git a/dev/build/windows/difftar-folder.sh b/dev/build/windows/difftar-folder.sh
new file mode 100644
index 00000000..65278d5c
--- /dev/null
+++ b/dev/build/windows/difftar-folder.sh
@@ -0,0 +1,86 @@
+#!/bin/bash
+
+###################### COPYRIGHT/COPYLEFT ######################
+
+# (C) 2016 Intel Deutschland GmbH
+# Author: Michael Soegtrop
+#
+# Released to the public by Intel under the
+# GNU Lesser General Public License Version 2.1 or later
+# See https://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
+#
+# With very valuable help on building GTK from
+#   https://wiki.gnome.org/Projects/GTK+/Win32/MSVCCompilationOfGTKStack
+#   http://www.gaia-gis.it/spatialite-3.0.0-BETA/mingw64_how_to.html
+
+###################### Script safety and debugging settings ######################
+
+set -o nounset
+
+# Print usage
+
+if [ "$#" -lt 1 ] ; then
+  echo 'Diff a tar (or compressed tar) file with a folder'
+  echo 'difftar-folder.sh <tarfile> [<folder>] [strip]'
+  echo default for folder is .
+  echo default for strip is 0.
+  echo 'strip must be 0 or 1.'
+  exit 1
+fi
+
+# Parse parameters
+
+tarfile=$1
+
+if [ "$#" -ge 2 ] ; then
+  folder=$2
+else
+  folder=.
+fi
+
+if [ "$#" -ge 3 ] ; then
+  strip=$3
+else
+  strip=0
+fi
+
+# Get path prefix if --strip is used
+
+if [ "$strip" -gt 0 ] ; then
+  prefix=`tar -t -f $tarfile | head -1`
+else
+  prefix=
+fi
+
+# Original folder
+
+if [ "$strip" -gt 0 ] ; then
+  orig=${prefix%/}.orig
+elif [ "$folder" = "." ] ; then
+  orig=${tarfile##*/}
+  orig=./${orig%%.tar*}.orig
+elif [ "$folder" = "" ] ; then
+  orig=${tarfile##*/}
+  orig=${orig%%.tar*}.orig
+else
+  orig=$folder.orig
+fi
+echo $orig
+mkdir -p "$orig"
+
+
+# Make sure tar uses english output (for Mod time differs)
+export LC_ALL=C
+
+# Search all files with a deviating modification time using tar --diff
+tar --diff -a -f "$tarfile" --strip $strip --directory "$folder" | grep "Mod time differs" | while read -r file ; do
+  # Substitute ': Mod time differs' with nothing
+  file=${file/: Mod time differs/}
+  # Check if file exists
+  if [ -f "$folder/$file" ] ; then 
+    # Extract original file
+    tar -x -a -f "$tarfile" --strip $strip --directory "$orig" "$prefix$file"
+    # Compute diff
+    diff -u "$orig/$file" "$folder/$file" 
+  fi
+done
+\ No newline at end of file