466472796c
This reverts commit 80b95de7651caa0cfeb684ffc200860989f667dc. Reason for revert: Speculative revert for downstream breakage. Possibly FileAudioDevice broken? Original change's description: > Trim down FileWrapper class to be merely a wrapper owning a FILE* > > Bug: webrtc:6463 > Change-Id: If71e2f3a75dc1863bc805ab71de1e2d33294f805 > Reviewed-on: https://webrtc-review.googlesource.com/c/117881 > Reviewed-by: Karl Wiberg <kwiberg@webrtc.org> > Reviewed-by: Alex Loiko <aleloi@webrtc.org> > Commit-Queue: Niels Moller <nisse@webrtc.org> > Cr-Commit-Position: refs/heads/master@{#26311} TBR=aleloi@webrtc.org,kwiberg@webrtc.org,nisse@webrtc.org,tommi@webrtc.org Change-Id: I46d37afbf9acb5f62f04e09d944114c1da96eb36 No-Presubmit: true No-Tree-Checks: true No-Try: true Bug: webrtc:6463 Reviewed-on: https://webrtc-review.googlesource.com/c/118380 Reviewed-by: Niels Moller <nisse@webrtc.org> Commit-Queue: Niels Moller <nisse@webrtc.org> Cr-Commit-Position: refs/heads/master@{#26318}
86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
/*
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* Copyright (c) 2011 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#ifndef RTC_BASE_SYSTEM_FILE_WRAPPER_H_
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#define RTC_BASE_SYSTEM_FILE_WRAPPER_H_
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#include <stddef.h>
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#include <stdio.h>
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#include "rtc_base/critical_section.h"
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// Implementation that can read (exclusive) or write from/to a file.
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namespace webrtc {
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// TODO(tommi): Rename to rtc::File and move to base.
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class FileWrapper final {
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public:
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static const size_t kMaxFileNameSize = 1024;
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// Factory methods.
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// TODO(tommi): Remove Create().
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static FileWrapper* Create();
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static FileWrapper Open(const char* file_name_utf8, bool read_only);
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FileWrapper(FILE* file, size_t max_size);
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~FileWrapper();
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// Support for move semantics.
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FileWrapper(FileWrapper&& other);
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FileWrapper& operator=(FileWrapper&& other);
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// Returns true if a file has been opened.
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bool is_open() const { return file_ != nullptr; }
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// Opens a file in read or write mode, decided by the read_only parameter.
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bool OpenFile(const char* file_name_utf8, bool read_only);
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// Initializes the wrapper from an existing handle. The wrapper
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// takes ownership of |handle| and closes it in CloseFile().
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bool OpenFromFileHandle(FILE* handle);
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void CloseFile();
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// Limits the file size to |bytes|. Writing will fail after the cap
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// is hit. Pass zero to use an unlimited size.
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// TODO(tommi): Could we move this out into a separate class?
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void SetMaxFileSize(size_t bytes);
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// Flush any pending writes. Note: Flushing when closing, is not required.
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int Flush();
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// Rewinds the file to the start.
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int Rewind();
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int Read(void* buf, size_t length);
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bool Write(const void* buf, size_t length);
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private:
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FileWrapper();
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void CloseFileImpl();
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int FlushImpl();
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// TODO(tommi): Remove the lock.
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rtc::CriticalSection lock_;
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FILE* file_ = nullptr;
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size_t position_ = 0;
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size_t max_size_in_bytes_ = 0;
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// Copying is not supported.
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FileWrapper(const FileWrapper&) = delete;
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FileWrapper& operator=(const FileWrapper&) = delete;
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};
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} // namespace webrtc
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#endif // RTC_BASE_SYSTEM_FILE_WRAPPER_H_
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