auto import from //depot/cupcake/@135843
diff --git a/tools/findleaves.sh b/tools/findleaves.sh
new file mode 100755
index 0000000..7cc0fa7
--- /dev/null
+++ b/tools/findleaves.sh
@@ -0,0 +1,109 @@
+#!/bin/bash
+#
+# Copyright (C) 2008 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+# http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+#
+# Finds files with the specified name under a particular directory, stopping
+# the search in a given subdirectory when the file is found.
+#
+
+set -o nounset # fail when dereferencing unset variables
+set -o errexit # fail if any subcommand fails
+
+progName=`basename $0`
+
+function warn() {
+ echo "$progName: $@" >&2
+}
+
+function trace() {
+ echo "$progName: $@"
+}
+
+function usage() {
+ if [[ $# > 0 ]]
+ then
+ warn $@
+ fi
+ cat <<-EOF
+Usage: $progName [<options>] <dirlist> <filename>
+Options:
+ --mindepth=<mindepth>
+ --maxdepth=<maxdepth>
+ Both behave in the same way as their find(1) equivalents.
+ --prune=<glob>
+ Avoids returning results from any path matching the given glob-style
+ pattern (e.g., "*/out/*"). May be used multiple times.
+EOF
+ exit 1
+}
+
+function fail() {
+ warn $@
+ exit 1
+}
+
+if [ $# -lt 2 ]
+then
+ usage
+fi
+
+findargs=""
+while [[ "${1:0:2}" == "--" ]]
+do
+ arg=${1:2}
+ name=${arg%%=*}
+ value=${arg##*=}
+ if [[ "$name" == "mindepth" || "$name" == "maxdepth" ]]
+ then
+ # Add to beginning of findargs; these must come before the expression.
+ findargs="-$name $value $findargs"
+ elif [[ "$name" == "prune" ]]
+ then
+ # Add to end of findargs; these are part of the expression.
+ findargs="$findargs -path $value -prune -or"
+ fi
+ shift
+done
+
+nargs=$#
+# The filename is the last argument
+filename="${!nargs}"
+
+# Print out all files that match, as long as the path isn't explicitly
+# pruned. This will print out extraneous results from directories whose
+# parents have a match. These are filtered out by the awk script below.
+find "${@:0:$nargs}" $findargs -type f -name "$filename" -print |
+
+# Only pass along the directory of each match.
+sed -e 's/\/[^\/]*$/\//' |
+
+# Sort the output, so directories appear immediately before their contents.
+# If there are any duplicates, the awk script will implicitly ignore them.
+# The LC_ALL=C forces sort(1) to use bytewise ordering instead of listening
+# to the locale, which may do case-insensitive and/or alphanumeric-only
+# sorting.
+LC_ALL=C sort |
+
+# Always print the first line, which can't possibly be covered by a
+# parent directory match. After that, only print lines where the last
+# line printed isn't a prefix.
+awk -v "filename=$filename" '
+ (NR == 1) || (index($0, last) != 1) {
+ last = $0;
+ printf("%s%s\n", $0, filename);
+ }
+'