+# Search the specified directory (parameter $1) for the specified items (the
+# remaining parameters). The "item" is expected to be a directory located
+# somewhere along the directory tree at which $1 points. This directory must
+# have exactly 1 subdirectory and that subdirectory's name is considered to
+# be the version number we are looking for.
+#
+# This tool searches for these items in the order specified and emits the
+# first version number it finds. Using an one-line shell script for this task
+# turned out to be pretty impossible as the algorithm is quite complicated
+# (the "items" may move around the directory tree between releases and even
+# some of them might disappear and the others appear) so a full blown utility
+# is necessary.
+
+exec 2>&1
+set -e
+directory=$1
+shift
+if test -d $directory; then :; else
+ echo "Path '$directory' does not exist or is not a directory"
+ exit 1
+fi
+if test -d $directory/org/opendaylight; then :; else
+ echo "Path '$directory' does not look like OpenDaylight System directory"
+ exit 1
+fi
+file_list=`pwd`/filelist.tmp
+trap "rm -f $file_list" EXIT
+version_found="n/a"
+finish=false
+for Thing in $@; do
+ cd $directory
+ find . -name $Thing -type d -print >$file_list
+ exec <$file_list
+ while read -r directory_to_check; do
+ cd $directory_to_check
+ for file_in_checked_directory in *; do
+ if test -d $file_in_checked_directory; then
+ if test "$version_found" = "n/a"; then
+ version_found=$file_in_checked_directory
+ where_found=$directory_to_check
+ finish=true
+ else
+ version_found="n/a"
+ finish=false
+ break
+ fi
+ fi
+ done
+ if $finish; then
+ break
+ fi
+ done
+ if $finish; then
+ break
+ fi
+done
+if $finish; then
+ echo $version_found
+ dirname $where_found | cut -b 3-
+else
+ echo "None of the supplied components were found."
+ exit 1
+fi