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492 lines
16 KiB
492 lines
16 KiB
#!/bin/bash
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set -eu
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# Copyright 2020 Google Inc. All rights reserved.
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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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# Tool to evaluate the transitive closure of the ninja dependency graph of the
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# files and targets a given target depends on.
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#
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# i.e. the list of things that, if changed, could cause a change to a target.
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readonly me=$(basename "${0}")
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readonly usage="usage: ${me} {options} target [target...]
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Evaluate the transitive closure of files and ninja targets that one or more
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targets depend on.
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Dependency Options:
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-(no)order_deps Whether to include order-only dependencies. (Default false)
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-(no)implicit Whether to include implicit dependencies. (Default true)
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-(no)explicit Whether to include regular / explicit deps. (Default true)
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-nofollow Unanchored regular expression. Matching paths and targets
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always get reported. Their dependencies do not get reported
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unless first encountered in a 'container' file type.
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Multiple allowed and combined using '|'.
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e.g. -nofollow='*.so' not -nofollow='.so$'
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-nofollow='*.so|*.dex' or -nofollow='*.so' -nofollow='.dex'
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(Defaults to no matches)
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-container Unanchored regular expression. Matching file extensions get
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treated as 'container' files for -nofollow option.
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Multiple allowed and combines using '|'
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(Default 'apex|apk|zip|jar|tar|tgz')
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Output Options:
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-(no)quiet Suppresses progress output to stderr and interactive
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alias -(no)q prompts. By default, when stderr is a tty, progress gets
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reported to stderr; when both stderr and stdin are tty,
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the script asks user whether to delete intermediate files.
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When suppressed or not prompted, script always deletes the
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temporary / intermediate files.
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-sep=<delim> Use 'delim' as output field separator between notice
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checksum and notice filename in notice output.
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e.g. sep='\\t'
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(Default space)
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-csv Shorthand for -sep=','
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-directories=<f> Output directory names of dependencies to 'f'.
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alias -d User '/dev/stdout' to send directories to stdout. Defaults
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to no directory output.
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-notices=<file> Output license and notice file paths to 'file'.
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alias -n Use '/dev/stdout' to send notices to stdout. Defaults to no
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license/notice output.
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-projects=<file> Output git project names to 'file'. Use '/dev/stdout' to
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alias -p send projects to stdout. Defaults to no project output.
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-targets=<fils> Output target dependencies to 'file'. Use '/dev/stdout' to
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alias -t send targets to stdout.
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When no directory, notice, project or target output options
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given, defaults to stdout. Otherwise, defaults to no target
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output.
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At minimum, before running this script, you must first run:
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$ source build/envsetup.sh
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$ lunch
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$ m nothing
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to setup the build environment, choose a target platform, and build the ninja
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dependency graph.
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"
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function die() { echo -e "${*}" >&2; exit 2; }
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# Reads one input target per line from stdin; outputs (isnotice target) tuples.
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#
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# output target is a ninja target that the input target depends on
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# isnotice in {0,1} with 1 for output targets believed to be license or notice
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function getDeps() {
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(tr '\n' '\0' | xargs -0 -r "${ninja_bin}" -f "${ninja_file}" -t query) \
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| awk -v include_order="${include_order_deps}" \
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-v include_implicit="${include_implicit_deps}" \
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-v include_explicit="${include_deps}" \
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-v containers="${container_types}" \
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'
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BEGIN {
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ininput = 0
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isnotice = 0
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currFileName = ""
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currExt = ""
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}
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$1 == "outputs:" {
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ininput = 0
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}
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ininput == 0 && $0 ~ /^\S\S*:$/ {
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isnotice = ($0 ~ /.*NOTICE.*[.]txt:$/)
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currFileName = gensub(/^.*[/]([^/]*)[:]$/, "\\1", "g")
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currExt = gensub(/^.*[.]([^./]*)[:]$/, "\\1", "g")
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}
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ininput != 0 && $1 !~ /^[|][|]?/ {
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if (include_explicit == "true") {
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fileName = gensub(/^.*[/]([^/]*)$/, "\\1", "g")
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print ( \
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(isnotice && $0 !~ /^\s*build[/]soong[/]scripts[/]/) \
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|| $0 ~ /NOTICE|LICEN[CS]E/ \
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|| $0 ~ /(notice|licen[cs]e)[.]txt/ \
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)" "(fileName == currFileName||currExt ~ "^(" containers ")$")" "gensub(/^\s*/, "", "g")
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}
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}
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ininput != 0 && $1 == "|" {
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if (include_implicit == "true") {
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fileName = gensub(/^.*[/]([^/]*)$/, "\\1", "g")
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$1 = ""
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print ( \
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(isnotice && $0 !~ /^\s*build[/]soong[/]scripts[/]/) \
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|| $0 ~ /NOTICE|LICEN[CS]E/ \
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|| $0 ~ /(notice|licen[cs]e)[.]txt/ \
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)" "(fileName == currFileName||currExt ~ "^(" containers ")$")" "gensub(/^\s*/, "", "g")
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}
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}
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ininput != 0 && $1 == "||" {
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if (include_order == "true") {
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fileName = gensub(/^.*[/]([^/]*)$/, "\\1", "g")
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$1 = ""
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print ( \
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(isnotice && $0 !~ /^\s*build[/]soong[/]scripts[/]/) \
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|| $0 ~ /NOTICE|LICEN[CS]E/ \
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|| $0 ~ /(notice|licen[cs]e)[.]txt/ \
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)" "(fileName == currFileName||currExt ~ "^(" containers ")$")" "gensub(/^\s*/, "", "g")
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}
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}
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$1 == "input:" {
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ininput = 1
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}
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'
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}
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# Reads one input directory per line from stdin; outputs unique git projects.
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function getProjects() {
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while read d; do
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while [ "${d}" != '.' ] && [ "${d}" != '/' ]; do
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if [ -d "${d}/.git/" ]; then
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echo "${d}"
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break
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fi
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d=$(dirname "${d}")
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done
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done | sort -u
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}
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if [ -z "${ANDROID_BUILD_TOP}" ]; then
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die "${me}: Run 'lunch' to configure the build environment"
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fi
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if [ -z "${TARGET_PRODUCT}" ]; then
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die "${me}: Run 'lunch' to configure the build environment"
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fi
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readonly ninja_file="${ANDROID_BUILD_TOP}/out/combined-${TARGET_PRODUCT}.ninja"
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if [ ! -f "${ninja_file}" ]; then
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die "${me}: Run 'm nothing' to build the dependency graph"
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fi
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readonly ninja_bin="${ANDROID_BUILD_TOP}/prebuilts/build-tools/linux-x86/bin/ninja"
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if [ ! -x "${ninja_bin}" ]; then
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die "${me}: Cannot find ninja executable expected at ${ninja_bin}"
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fi
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# parse the command-line
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declare -a targets # one or more targets to evaluate
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include_order_deps=false # whether to trace through || "order dependencies"
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include_implicit_deps=true # whether to trace through | "implicit deps"
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include_deps=true # whether to trace through regular explicit deps
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quiet=false # whether to suppress progress
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projects_out='' # where to output the list of projects
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directories_out='' # where to output the list of directories
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targets_out='' # where to output the list of targets/source files
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notices_out='' # where to output the list of license/notice files
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sep=" " # separator between md5sum and notice filename
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nofollow='' # regularexp must fully match targets to skip
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container_types='' # regularexp must full match file extension
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# defaults to 'apex|apk|zip|jar|tar|tgz' below.
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use_stdin=false # whether to read targets from stdin i.e. target -
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while [ $# -gt 0 ]; do
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case "${1:-}" in
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-)
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use_stdin=true
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;;
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-*)
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flag=$(expr "${1}" : '^-*\(.*\)$')
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case "${flag:-}" in
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order_deps)
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include_order_deps=true;;
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noorder_deps)
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include_order_deps=false;;
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implicit)
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include_implicit_deps=true;;
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noimplicit)
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include_implicit_deps=false;;
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explicit)
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include_deps=true;;
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noexplicit)
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include_deps=false;;
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csv)
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sep=",";;
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sep)
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sep="${2?"${usage}"}"; shift;;
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sep=)
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sep=$(expr "${flag}" : '^sep=\(.*\)$');;
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q) ;&
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quiet)
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quiet=true;;
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noq) ;&
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noquiet)
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quiet=false;;
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nofollow)
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case "${nofollow}" in
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'')
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nofollow="${2?"${usage}"}";;
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*)
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nofollow="${nofollow}|${2?"${usage}"}";;
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esac
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shift
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;;
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nofollow=*)
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case "${nofollow}" in
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'')
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nofollow=$(expr "${flag}" : '^nofollow=\(.*\)$');;
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*)
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nofollow="${nofollow}|"$(expr "${flag}" : '^nofollow=\(.*\)$');;
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esac
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;;
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container)
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container_types="${container_types}|${2?"${usage}"}";;
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container=*)
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container_types="${container_types}|"$(expr "${flag}" : '^container=\(.*\)$');;
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p) ;&
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projects)
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projects_out="${2?"${usage}"}"; shift;;
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p=*) ;&
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projects=*)
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projects_out=$(expr "${flag}" : '^.*=\(.*\)$');;
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d) ;&
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directores)
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directories_out="${2?"${usage}"}"; shift;;
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d=*) ;&
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directories=*)
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directories_out=$(expr "${flag}" : '^.*=\(.*\)$');;
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t) ;&
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targets)
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targets_out="${2?"${usage}"}"; shift;;
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t=*) ;&
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targets=)
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targets_out=$(expr "${flag}" : '^.*=\(.*\)$');;
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n) ;&
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notices)
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notices_out="${2?"${usage}"}"; shift;;
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n=*) ;&
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notices=)
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notices_out=$(expr "${flag}" : '^.*=\(.*\)$');;
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*)
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die "${usage}\n\nUnknown flag ${1}";;
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esac
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;;
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*)
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targets+=("${1:-}")
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;;
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esac
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shift
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done
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# fail fast if command-line arguments are invalid
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if [ ! -v targets[0] ] && ! ${use_stdin}; then
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die "${usage}\n\nNo target specified."
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fi
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if [ -z "${projects_out}" ] \
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&& [ -z "${directories_out}" ] \
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&& [ -z "${targets_out}" ] \
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&& [ -z "${notices_out}" ]
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then
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targets_out='/dev/stdout'
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fi
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if [ -z "${container_types}" ]; then
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container_types='apex|apk|zip|jar|tar|tgz'
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fi
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# showProgress when stderr is a tty
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if [ -t 2 ] && ! ${quiet}; then
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showProgress=true
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else
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showProgress=false
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fi
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# interactive when both stderr and stdin are tty
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if ${showProgress} && [ -t 0 ]; then
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interactive=true
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else
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interactive=false
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fi
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readonly tmpFiles=$(mktemp -d "${TMPDIR}.tdeps.XXXXXXXXX")
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if [ -z "${tmpFiles}" ]; then
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die "${me}: unable to create temporary directory"
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fi
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# The deps files contain unique (isnotice target) tuples where
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# isnotice in {0,1} with 1 when ninja target 'target' is a license or notice.
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readonly oldDeps="${tmpFiles}/old"
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readonly newDeps="${tmpFiles}/new"
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readonly allDeps="${tmpFiles}/all"
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if ${use_stdin}; then # start deps by reading 1 target per line from stdin
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awk '
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NF > 0 {
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print ( \
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$0 ~ /NOTICE|LICEN[CS]E/ \
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|| $0 ~ /(notice|licen[cs]e)[.]txt/ \
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)" "gensub(/\s*$/, "", "g", gensub(/^\s*/, "", "g"))
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}
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' > "${newDeps}"
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else # start with no deps by clearing file
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: > "${newDeps}"
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fi
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# extend deps by appending targets from command-line
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for idx in "${!targets[*]}"; do
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isnotice='0'
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case "${targets[${idx}]}" in
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*NOTICE*) ;&
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*LICEN[CS]E*) ;&
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*notice.txt) ;&
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*licen[cs]e.txt)
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isnotice='1';;
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esac
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echo "${isnotice} 1 ${targets[${idx}]}" >> "${newDeps}"
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done
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# remove duplicates and start with new, old and all the same
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sort -u < "${newDeps}" > "${allDeps}"
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cp "${allDeps}" "${newDeps}"
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cp "${allDeps}" "${oldDeps}"
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# report depth of dependenciens when showProgress
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depth=0
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# 1st iteration always unfiltered
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filter='cat'
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while [ $(wc -l < "${newDeps}") -gt 0 ]; do
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if ${showProgress}; then
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echo "depth ${depth} has "$(wc -l < "${newDeps}")" targets" >&2
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depth=$(expr ${depth} + 1)
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fi
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( # recalculate dependencies by combining unique inputs of new deps w. old
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set +e
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sh -c "${filter}" < "${newDeps}" | cut -d\ -f3- | getDeps
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set -e
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cat "${oldDeps}"
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) | sort -u > "${allDeps}"
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# recalculate new dependencies as net additions to old dependencies
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set +e
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diff "${oldDeps}" "${allDeps}" --old-line-format='' --new-line-format='%L' \
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--unchanged-line-format='' > "${newDeps}"
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set -e
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# apply filters on subsequent iterations
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case "${nofollow}" in
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'')
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filter='cat';;
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*)
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filter="egrep -v '^[01] 0 (${nofollow})$'"
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;;
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esac
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# recalculate old dependencies for next iteration
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cp "${allDeps}" "${oldDeps}"
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done
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# found all deps -- clean up last iteration of old and new
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rm -f "${oldDeps}"
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rm -f "${newDeps}"
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if ${showProgress}; then
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echo $(wc -l < "${allDeps}")" targets" >&2
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fi
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if [ -n "${targets_out}" ]; then
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cut -d\ -f3- "${allDeps}" | sort -u > "${targets_out}"
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fi
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if [ -n "${directories_out}" ] \
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|| [ -n "${projects_out}" ] \
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|| [ -n "${notices_out}" ]
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then
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readonly allDirs="${tmpFiles}/dirs"
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(
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cut -d\ -f3- "${allDeps}" | tr '\n' '\0' | xargs -0 dirname
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) | sort -u > "${allDirs}"
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if ${showProgress}; then
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echo $(wc -l < "${allDirs}")" directories" >&2
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fi
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case "${directories_out}" in
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'') : do nothing;;
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*)
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cat "${allDirs}" > "${directories_out}"
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;;
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esac
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fi
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if [ -n "${projects_out}" ] \
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|| [ -n "${notices_out}" ]
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then
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readonly allProj="${tmpFiles}/projects"
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set +e
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egrep -v '^out[/]' "${allDirs}" | getProjects > "${allProj}"
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set -e
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if ${showProgress}; then
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echo $(wc -l < "${allProj}")" projects" >&2
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fi
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case "${projects_out}" in
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'') : do nothing;;
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*)
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cat "${allProj}" > "${projects_out}"
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;;
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esac
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fi
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case "${notices_out}" in
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'') : do nothing;;
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*)
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readonly allNotice="${tmpFiles}/notices"
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set +e
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egrep '^1' "${allDeps}" | cut -d\ -f3- | egrep -v '^out/' > "${allNotice}"
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set -e
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cat "${allProj}" | while read proj; do
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for f in LICENSE LICENCE NOTICE license.txt notice.txt; do
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if [ -f "${proj}/${f}" ]; then
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echo "${proj}/${f}"
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fi
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done
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done >> "${allNotice}"
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if ${showProgress}; then
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echo $(cat "${allNotice}" | sort -u | wc -l)" notice targets" >&2
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fi
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readonly hashedNotice="${tmpFiles}/hashednotices"
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( # md5sum outputs checksum space indicator(space or *) filename newline
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set +e
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sort -u "${allNotice}" | tr '\n' '\0' | xargs -0 -r md5sum 2>/dev/null
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set -e
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# use sed to replace space and indicator with separator
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) > "${hashedNotice}"
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if ${showProgress}; then
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echo $(cut -d\ -f2- "${hashedNotice}" | sort -u | wc -l)" notice files" >&2
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echo $(cut -d\ -f1 "${hashedNotice}" | sort -u | wc -l)" distinct notices" >&2
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fi
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sed 's/^\([^ ]*\) [* ]/\1'"${sep}"'/g' "${hashedNotice}" | sort > "${notices_out}"
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;;
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esac
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if ${interactive}; then
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echo -n "$(date '+%F %-k:%M:%S') Delete ${tmpFiles} ? [n] " >&2
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read answer
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case "${answer}" in [yY]*) rm -fr "${tmpFiles}";; esac
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else
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rm -fr "${tmpFiles}"
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fi
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