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141 lines
4.7 KiB
141 lines
4.7 KiB
#!/bin/bash
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#
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# Copyright (C) 2020 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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# This script is used by external_updater to replace a package.
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# It can also be invoked directly. It is used in two ways:
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# (1) in a .../external/* rust directory with .bp and Cargo.toml;
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# cargo2android.py must be in PATH
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# (2) in a tmp new directory with .bp and Cargo.toml,
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# and $1 equals to the rust Android source tree root,
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# and $2 equals to the rust sub-directory path name under external.
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set -e
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# Wrapper around cargo2android.
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C2A_WRAPPER="/google/bin/releases/android-rust/cargo2android/sandbox.par"
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function main() {
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check_files $*
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update_files_with_cargo_pkg_vars
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# Save Cargo.lock if it existed before this update.
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[ ! -f Cargo.lock ] || mv Cargo.lock Cargo.lock.saved
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echo "Updating Android.bp: $C2A_WRAPPER -- $FLAGS"
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$C2A_WRAPPER -- $FLAGS
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copy_cargo_out_files $*
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rm -rf target.tmp cargo.out Cargo.lock
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# Restore Cargo.lock if it existed before this update.
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[ ! -f Cargo.lock.saved ] || mv Cargo.lock.saved Cargo.lock
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}
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function abort() {
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echo "$1" >&2
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exit 1
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}
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function check_files() {
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if [ "$1" == "" ]; then
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EXTERNAL_DIR=`pwd`
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else
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EXTERNAL_DIR="$2" # e.g. rust/crates/bytes
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fi
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[ -f "$C2A_WRAPPER" ] || abort "ERROR: cannot find $C2A_WRAPPER"
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LINE1=`head -1 Android.bp || abort "ERROR: cannot find Android.bp"`
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if [[ ! "$LINE1" =~ ^.*cargo2android.py.*$ ]]; then
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echo 'Android.bp header does not contain "cargo2android.py"; skip regen_bp'
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exit 0
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fi
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FLAGS=`echo "$LINE1" | sed -e 's:^.*cargo2android.py ::;s:\.$::'`
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[ -f Cargo.toml ] || abort "ERROR: cannot find ./Cargo.toml."
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}
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function copy_cargo_out_files() {
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if [ -d $2/out ]; then
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# copy files generated by cargo build to out directory
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PKGNAME=`basename $2`
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for f in $2/out/*
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do
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OUTF=`basename $f`
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SRC=`ls ./target.tmp/*/debug/build/$PKGNAME-*/out/$OUTF ||
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ls ./target.tmp/debug/build/$PKGNAME-*/out/$OUTF || true`
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if [ "$SRC" != "" ]; then
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echo "Copying $SRC to out/$OUTF"
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mkdir -p out
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cp $SRC out/$OUTF
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fi
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done
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fi
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}
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function update_files_with_cargo_pkg_vars() {
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FILES=`grep -r -l --include \*.rs \
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--exclude-dir .git --exclude build.rs \
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--exclude-dir target.tmp --exclude-dir target \
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-E 'env!\("CARGO_PKG_(NAME|VERSION|AUTHORS|DESCRIPTION)"\)' * || true`
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if [ "$FILES" != "" ]; then
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printf "INFO: to update FILES: %s\n" "`echo ${FILES} | paste -s -d' '`"
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# Find in ./Cargo.toml the 'name', 'version', 'authors', 'description'
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# strings and use them to replace env!("CARGO_PKG_*") in $FILES.
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grep_cargo_key_values
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update_files
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fi
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}
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function grep_one_key_value()
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{
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# Grep the first key $1 in Cargo.toml and return its value.
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grep "^$1 = " Cargo.toml | head -1 | sed -e "s:^$1 = ::" \
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|| abort "ERROR: Cannot find '$1' in ./Cargo.toml"
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}
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function grep_cargo_key_values()
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{
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NAME=`grep_one_key_value name`
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VERSION=`grep_one_key_value version`
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AUTHORS=`grep_one_key_value authors`
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DESCRIPTION=`grep_one_key_value description`
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if [ "$DESCRIPTION" == "\"\"\"" ]; then
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# Old Cargo.toml description format, found only in the 'shlex' crate.
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DESCRIPTION=`printf '"%s-%s"' "$NAME" "$VERSION"`
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printf "WARNING: use %s for its CARGO_PKG_DESCRIPTION." "$DESCRIPTION"
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fi
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# CARGO_PKG_AUTHORS uses ':' as the separator.
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AUTHORS="$AUTHORS.join(\":\")"
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}
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function build_sed_cmd()
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{
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# Replace '\' with '\\' to keep escape sequence in the sed command.
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# NAME and VERSION are simple stings without escape sequence.
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s1=`printf "$1" "NAME" "$NAME"`
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s2=`printf "$1" "VERSION" "$VERSION"`
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s3=`printf "$1" "AUTHORS" "${AUTHORS//\\\\/\\\\\\\\}"`
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s4=`printf "$1" "DESCRIPTION" "${DESCRIPTION//\\\\/\\\\\\\\}"`
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echo "$s1;$s2;$s3;$s4"
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}
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function update_files()
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{
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# Replace option_env!("...") with Some("...")
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# Replace env!("...") with string literal "..."
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# Do not replace run-time std::env::var("....") with
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# (Ok("...".to_string()) as std::result::Result<...>)
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local cmd=`build_sed_cmd 's%%option_env!("CARGO_PKG_%s")%%Some(%s)%%g'`
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cmd="$cmd;"`build_sed_cmd 's%%env!("CARGO_PKG_%s")%%%s%%g'`
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sed -i -e "$cmd" $FILES
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}
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main $*
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