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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 <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::string;
using std::vector;
namespace android {
namespace aidl {
ImportResolver::ImportResolver(const IoDelegate& io_delegate, const string& input_file_name,
const set<string>& import_paths, const vector<string>& input_files)
: io_delegate_(io_delegate), input_file_name_(input_file_name), input_files_(input_files) {
for (string path : import_paths) {
if (path.empty()) {
path = ".";
}
if (path[path.size() - 1] != OS_PATH_SEPARATOR) {
path += OS_PATH_SEPARATOR;
}
import_paths_.push_back(std::move(path));
}
}
string ImportResolver::FindImportFile(const string& canonical_name) const {
// Convert the canonical name to a relative file path.
string relative_path = canonical_name;
for (char& c : relative_path) {
if (c == '.') {
c = OS_PATH_SEPARATOR;
}
}
relative_path += ".aidl";
// Look for that relative path at each of our import roots.
vector<string> found_paths;
for (string path : import_paths_) {
path = path + relative_path;
if (io_delegate_.FileIsReadable(path)) {
found_paths.emplace_back(path);
}
}
// remove duplicates
std::sort(found_paths.begin(), found_paths.end());
auto last = std::unique(found_paths.begin(), found_paths.end());
found_paths.erase(last, found_paths.end());
int num_found = found_paths.size();
if (num_found == 0) {
return "";
} else if (num_found == 1) {
return found_paths.front();
} else {
AIDL_ERROR(input_file_name_) << "Duplicate files found for " << canonical_name
<< " from:" << std::endl
<< android::base::Join(found_paths, "\n");
return "";
}
}
} // namespace aidl
} // namespace android