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/*
* Copyright (C) 2015, 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.
*/
#include "import_resolver.h"
#include "aidl_language.h"
#include "logging.h"
#include <algorithm>
#include <android-base/file.h>
#include <android-base/strings.h>
#include <unistd.h>
#ifdef _WIN32
#include <io.h>
#endif
#include "os.h"
using std::set;
using std::string;
using std::vector;
namespace android {
namespace aidl {
ImportResolver::ImportResolver(const IoDelegate& io_delegate, const string& input_file_name,
const set<string>& import_paths)
: io_delegate_(io_delegate), input_file_name_(input_file_name) {
for (string path : import_paths) {
if (path.empty()) {
path = ".";
}
if (path[path.size() - 1] != OS_PATH_SEPARATOR) {
path += OS_PATH_SEPARATOR;
}
import_paths_.emplace(std::move(path));
}
}
string ImportResolver::FindImportFile(const string& canonical_name) const {
auto parts = base::Split(canonical_name, ".");
while (!parts.empty()) {
string relative_path = base::Join(parts, OS_PATH_SEPARATOR) + ".aidl";
auto candidates = ScanImportPaths(relative_path);
if (candidates.size() == 0) {
// remove the last part & keep searching
parts.pop_back();
continue;
}
if (candidates.size() == 1) {
// found! ("legacy" logic: may still be ambiguous path if we try other relative paths)
return *candidates.begin();
}
if (candidates.size() > 1) {
AIDL_ERROR(input_file_name_) << "Duplicate files found for " << canonical_name << " from:\n"
<< base::Join(candidates, "\n");
return "";
}
}
AIDL_ERROR(input_file_name_) << "Couldn't find import for class " << canonical_name
<< ". Searched here:\n - " << base::Join(import_paths_, "\n - ");
return "";
}
set<string> ImportResolver::ScanImportPaths(const string& relative_path) const {
// Look for that relative path at each of our import roots.
set<string> found;
for (const auto& path : import_paths_) {
if (io_delegate_.FileIsReadable(path + relative_path)) {
found.emplace(path + relative_path);
}
}
return found;
}
} // namespace aidl
} // namespace android
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