Removing, opening and creating files in platform_file and file

webrtc/base/platform_file.cc

 /*
  *  Copyright 2014 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #include "webrtc/base/platform_file.h"
 
 #if defined(WEBRTC_WIN)
 #include <io.h>
 #else
+#include <fcntl.h>
+#include <sys/stat.h>
+#include <sys/types.h>
 #include <unistd.h>
 #endif
 
 namespace rtc {
 
 #if defined(WEBRTC_WIN)
 const PlatformFile kInvalidPlatformFileValue = INVALID_HANDLE_VALUE;
 
 FILE* FdopenPlatformFileForWriting(PlatformFile file) {
   if (file == kInvalidPlatformFileValue)
     return NULL;
   int fd = _open_osfhandle(reinterpret_cast<intptr_t>(file), 0);
   if (fd < 0)
     return NULL;
 
   return _fdopen(fd, "w");
 }
 
 bool ClosePlatformFile(PlatformFile file) {
   return CloseHandle(file) != 0;
 }
-#else
+
+bool RemoveFile(const std::string& path) {
+  return ::DeleteFile(ToUtf16(path).c_str()) != 0;
+}
+
+PlatformFile OpenPlatformFile(const std::string& path) {
+  return ::CreateFile(ToUtf16(path).c_str(), GENERIC_READ | GENERIC_WRITE, 0,
+                      nullptr, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, nullptr);
+}
+
+PlatformFile CreatePlatformFile(const std::string& path) {
+  return ::CreateFile(ToUtf16(path).c_str(), GENERIC_READ | GENERIC_WRITE, 0,
+                      nullptr, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, nullptr);
+}
+
+#else  // defined(WEBRTC_WIN)
+
 const PlatformFile kInvalidPlatformFileValue = -1;
 
 FILE* FdopenPlatformFileForWriting(PlatformFile file) {
   return fdopen(file, "w");
 }
 
 bool ClosePlatformFile(PlatformFile file) {
   return close(file);
 }
+
+bool RemoveFile(const std::string& path) {
+  return ::unlink(path.c_str()) == 0;
+}
+
+PlatformFile OpenPlatformFile(const std::string& path) {
+  return ::open(path.c_str(), O_RDWR);
+}
+
+PlatformFile CreatePlatformFile(const std::string& path) {
+  return ::open(path.c_str(), O_CREAT | O_TRUNC | O_RDWR, S_IRUSR | S_IWUSR);
+}
+
 #endif
 
 }  // namespace rtc