95 lines
3.4 KiB
C++
95 lines
3.4 KiB
C++
/*
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* Copyright (C) 2021 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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#include <android-base/logging.h>
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#include <android-base/strings.h>
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#include <cstdlib>
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#include <string_view>
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#include "derive_classpath.h"
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bool ArgumentMatches(std::string_view argument, std::string_view prefix, std::string_view* value) {
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if (android::base::StartsWith(argument, prefix)) {
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*value = argument.substr(prefix.size());
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return true;
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}
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return false;
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}
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// Command line flags need to be considered as a de facto API since there may be callers outside
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// of the SdkExtensions APEX, which needs to run on older Android versions. For example, otapreopt
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// currently executes derive_classpath with a single output file. When changing the flags, make sure
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// it won't break on older Android.
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bool ParseArgs(android::derive_classpath::Args& args, int argc, char** argv) {
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// Parse flags
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std::vector<std::string_view> positional_args;
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for (int i = 1; i < argc; ++i) {
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const std::string_view arg = argv[i];
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std::string_view value;
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if (ArgumentMatches(arg, "--bootclasspath-fragment=", &value)) {
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if (!args.system_bootclasspath_fragment.empty()) {
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LOG(ERROR) << "Duplicated flag --bootclasspath-fragment is specified";
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return false;
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}
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args.system_bootclasspath_fragment = value;
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} else if (ArgumentMatches(arg, "--systemserverclasspath-fragment=", &value)) {
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if (!args.system_systemserverclasspath_fragment.empty()) {
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LOG(ERROR) << "Duplicated flag --systemserverclasspath-fragment is specified";
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return false;
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}
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args.system_systemserverclasspath_fragment = value;
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} else if (ArgumentMatches(arg, "--scan-dirs=", &value)) {
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if (!args.scan_dirs.empty()) {
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LOG(ERROR) << "Duplicated flag --scan-dirs is specified";
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return false;
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}
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args.scan_dirs = android::base::Split(std::string(value), ",");
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} else {
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positional_args.emplace_back(arg);
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}
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}
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// Validate flag combinations
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if (!args.scan_dirs.empty() && (!args.system_bootclasspath_fragment.empty() ||
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!args.system_systemserverclasspath_fragment.empty())) {
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LOG(ERROR) << "--scan-dirs should not be accompanied by other flags";
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return false;
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}
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// Handle positional args
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if (positional_args.size() == 0) {
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args.output_path = android::derive_classpath::kGeneratedClasspathExportsFilepath;
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} else if (positional_args.size() == 1) {
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args.output_path = positional_args[0];
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} else {
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LOG(ERROR) << "Unrecognized positional arguments: "
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<< android::base::Join(positional_args, ' ');
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return false;
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}
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return true;
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}
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int main(int argc, char** argv) {
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android::derive_classpath::Args args;
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if (!ParseArgs(args, argc, argv)) {
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return EXIT_FAILURE;
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}
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if (!android::derive_classpath::GenerateClasspathExports(args)) {
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return EXIT_FAILURE;
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}
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return EXIT_SUCCESS;
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}
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