4cd3f74003
the first argument is the executable (here findleaves.sh), therefore we need to start popping from the 2nd argument (1).
109 lines
3 KiB
Bash
Executable file
109 lines
3 KiB
Bash
Executable file
#!/bin/bash
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#
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# Copyright (C) 2008 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#
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#
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# Finds files with the specified name under a particular directory, stopping
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# the search in a given subdirectory when the file is found.
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#
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set -o nounset # fail when dereferencing unset variables
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set -o errexit # fail if any subcommand fails
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progName=`basename $0`
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function warn() {
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echo "$progName: $@" >&2
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}
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function trace() {
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echo "$progName: $@"
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}
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function usage() {
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if [[ $# > 0 ]]
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then
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warn $@
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fi
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cat <<-EOF
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Usage: $progName [<options>] <dirlist> <filename>
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Options:
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--mindepth=<mindepth>
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--maxdepth=<maxdepth>
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Both behave in the same way as their find(1) equivalents.
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--prune=<glob>
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Avoids returning results from any path matching the given glob-style
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pattern (e.g., "*/out/*"). May be used multiple times.
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EOF
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exit 1
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}
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function fail() {
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warn $@
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exit 1
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}
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if [ $# -lt 2 ]
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then
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usage
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fi
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findargs=""
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while [[ "${1:0:2}" == "--" ]]
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do
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arg=${1:2}
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name=${arg%%=*}
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value=${arg##*=}
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if [[ "$name" == "mindepth" || "$name" == "maxdepth" ]]
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then
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# Add to beginning of findargs; these must come before the expression.
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findargs="-$name $value $findargs"
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elif [[ "$name" == "prune" ]]
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then
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# Add to end of findargs; these are part of the expression.
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findargs="$findargs -path $value -prune -or"
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fi
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shift
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done
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nargs=$#
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# The filename is the last argument
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filename="${!nargs}"
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# Print out all files that match, as long as the path isn't explicitly
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# pruned. This will print out extraneous results from directories whose
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# parents have a match. These are filtered out by the awk script below.
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find -L "${@:1:$nargs-1}" $findargs -type f -name "$filename" -print |
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# Only pass along the directory of each match.
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sed -e 's/\/[^\/]*$/\//' |
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# Sort the output, so directories appear immediately before their contents.
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# If there are any duplicates, the awk script will implicitly ignore them.
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# The LC_ALL=C forces sort(1) to use bytewise ordering instead of listening
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# to the locale, which may do case-insensitive and/or alphanumeric-only
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# sorting.
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LC_ALL=C sort |
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# Always print the first line, which can't possibly be covered by a
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# parent directory match. After that, only print lines where the last
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# line printed isn't a prefix.
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awk -v "filename=$filename" '
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(NR == 1) || (index($0, last) != 1) {
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last = $0;
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printf("%s%s\n", $0, filename);
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}
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'
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