// Copyright (C) 2018 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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#include "inode2filename/inode.h"
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#include <android-base/logging.h>
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#include <android-base/parseint.h>
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#include <android-base/strings.h>
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#include <string>
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#include <vector>
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#include <sys/sysmacros.h>
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using android::base::ParseUint;
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namespace iorap::inode2filename {
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// TODO: refactor to return expected<Inode, string>
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bool Inode::Parse(const std::string& str, Inode* out, std::string* error_msg) {
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DCHECK(out != nullptr);
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DCHECK(error_msg != nullptr);
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// Major:minor:inode OR dev_t@inode
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std::vector<std::string> lst_pair = android::base::Split(str, "@");
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if (lst_pair.size() == 2) {
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size_t dev_whole = 0;
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if (!ParseUint(lst_pair[0], &dev_whole)) {
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*error_msg = "Failed to parse the whole device id as uint.";
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return false;
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}
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dev_t dev_w = static_cast<dev_t>(dev_whole);
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out->device_major = major(dev_w);
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out->device_minor = minor(dev_w);
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if (!ParseUint(lst_pair[1], &out->inode)) {
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*error_msg = "Failed to parse inode as uint.";
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return false;
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}
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return true;
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}
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std::vector<std::string> lst = android::base::Split(str, ":");
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if (lst.size() != 3) {
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*error_msg = "Too few : separated items";
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return false;
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}
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if (!ParseUint(lst[0], &out->device_major)) {
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*error_msg = "Failed to parse 0th element as a uint";
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return false;
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}
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if (!ParseUint(lst[1], &out->device_minor)) {
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*error_msg = "Failed to parse 1st element as a uint";
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return false;
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}
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if (!ParseUint(lst[2], &out->inode)) {
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*error_msg = "Failed to parse 2nd element as a uint";
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return false;
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}
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return true;
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}
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} // namespace iorap::inode2filename
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