73 lines
1.8 KiB
C++
73 lines
1.8 KiB
C++
// Copyright 2014 Google Inc. All rights reserved.
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//
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file or at
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// https://developers.google.com/open-source/licenses/bsd
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#include "media/file/local_file.h"
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#include "base/file_util.h"
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#include "base/logging.h"
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namespace media {
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LocalFile::LocalFile(const char* name, const char* mode)
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: File(name), file_mode_(mode), internal_file_(NULL) {}
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bool LocalFile::Open() {
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internal_file_ =
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file_util::OpenFile(base::FilePath(file_name()), file_mode_.c_str());
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return (internal_file_ != NULL);
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}
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bool LocalFile::Close() {
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bool result = true;
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if (internal_file_) {
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result = file_util::CloseFile(internal_file_);
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internal_file_ = NULL;
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}
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delete this;
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return result;
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}
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int64 LocalFile::Read(void* buffer, uint64 length) {
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DCHECK(buffer != NULL);
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DCHECK(internal_file_ != NULL);
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return fread(buffer, sizeof(char), length, internal_file_);
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}
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int64 LocalFile::Write(const void* buffer, uint64 length) {
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DCHECK(buffer != NULL);
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DCHECK(internal_file_ != NULL);
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return fwrite(buffer, sizeof(char), length, internal_file_);
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}
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int64 LocalFile::Size() {
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DCHECK(internal_file_ != NULL);
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// Flush any buffered data, so we get the true file size.
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if (!Flush()) {
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LOG(ERROR) << "Cannot flush file.";
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return -1;
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}
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int64 file_size;
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if (!file_util::GetFileSize(base::FilePath(file_name()), &file_size)) {
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LOG(ERROR) << "Cannot get file size.";
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return -1;
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}
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return file_size;
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}
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bool LocalFile::Flush() {
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DCHECK(internal_file_ != NULL);
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return ((fflush(internal_file_) == 0) && !ferror(internal_file_));
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}
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bool LocalFile::Eof() {
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DCHECK(internal_file_ != NULL);
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return static_cast<bool>(feof(internal_file_));
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}
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} // namespace media
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