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73 lines
1.8 KiB
73 lines
1.8 KiB
// Copyright 2020 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 "base/StdioStream.h"
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#include <assert.h>
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#include <errno.h>
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namespace android {
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namespace base {
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StdioStream::StdioStream(FILE* file, Ownership ownership) :
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mFile(file), mOwnership(ownership) {}
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StdioStream::StdioStream(StdioStream&& other)
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: mFile(other.mFile), mOwnership(other.mOwnership) {
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other.mFile = nullptr;
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}
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StdioStream& StdioStream::operator=(StdioStream&& other) {
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assert(this != &other);
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close();
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mFile = other.mFile;
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mOwnership = other.mOwnership;
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other.mFile = nullptr;
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return *this;
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}
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StdioStream::~StdioStream() {
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close();
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}
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ssize_t StdioStream::read(void* buffer, size_t size) {
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size_t res = ::fread(buffer, 1, size, mFile);
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if (res < size) {
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if (!::feof(mFile)) {
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errno = ::ferror(mFile);
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}
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}
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return static_cast<ssize_t>(res);
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}
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ssize_t StdioStream::write(const void* buffer, size_t size) {
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size_t res = ::fwrite(buffer, 1, size, mFile);
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if (res < size) {
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if (!::feof(mFile)) {
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errno = ::ferror(mFile);
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}
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}
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return static_cast<ssize_t>(res);
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}
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void StdioStream::close() {
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if (mOwnership == kOwner && mFile) {
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::fclose(mFile);
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mFile = nullptr;
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}
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}
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} // namespace base
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} // namespace android
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