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#!/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/\/[^\/]*$/\//' |
# Sort the output, so directories appear immediately before their contents.
# If there are any duplicates, the awk script will implicitly ignore them.
sort |
# Always print the first line, which can't possibly be covered by a
# parent directory match. After that, only print lines where the last
# line printed isn't a prefix.
awk -v "filename=$filename" '
(NR == 1) || (index($0, last) != 1) {
last = $0;
printf("%s%s\n", $0, filename);
}
'
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