69 lines
1.9 KiB
C++
69 lines
1.9 KiB
C++
/*
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* Copyright (C) 2017 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 <filaflat/Unflattener.h>
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namespace filaflat {
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bool Unflattener::read(const char** blob, size_t* size) noexcept {
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uint64_t nbytes;
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if (!read(&nbytes)) {
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return false;
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}
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const uint8_t* start = mCursor;
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mCursor += nbytes;
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bool const overflowed = mCursor > mEnd;
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if (!overflowed) {
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*blob = (const char*)start;
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*size = nbytes;
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}
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return !overflowed;
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}
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bool Unflattener::read(utils::CString* const s) noexcept {
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const uint8_t* const start = mCursor;
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const uint8_t* const last = mEnd;
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const uint8_t* curr = start;
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while (curr < last && *curr != '\0') {
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curr++;
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}
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bool const overflowed = start >= last;
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if (UTILS_LIKELY(!overflowed)) {
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*s = utils::CString{ (const char*)start, utils::CString::size_type(curr - start) };
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curr++;
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}
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mCursor = curr;
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return !overflowed;
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}
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bool Unflattener::read(const char** const s) noexcept {
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const uint8_t* const start = mCursor;
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const uint8_t* const last = mEnd;
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const uint8_t* curr = start;
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while (curr < last && *curr != '\0') {
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curr++;
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}
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bool const overflowed = start >= last;
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if (UTILS_LIKELY(!overflowed)) {
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*s = (char const*)start;
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curr++;
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}
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mCursor = curr;
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return !overflowed;
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}
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}
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