File API boilerplate.

webkit/glue/plugins/pepper_file_io.h

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef WEBKIT_GLUE_PLUGINS_PEPPER_FILE_IO_H_
+#define WEBKIT_GLUE_PLUGINS_PEPPER_FILE_IO_H_
+
+#include "third_party/ppapi/c/pp_time.h"
+#include "webkit/glue/plugins/pepper_resource.h"
+
+typedef struct _pp_CompletionCallback PP_CompletionCallback;
+typedef struct _pp_FileInfo PP_FileInfo;
+typedef struct _ppb_FileIO PPB_FileIO;
+typedef struct _ppb_FileIOTrusted PPB_FileIOTrusted;
+
+namespace pepper {
+
+class PluginModule;
+
+class FileIO : public Resource {
+ public:
+  explicit FileIO(PluginModule* module);
+  virtual ~FileIO();
+
+  // Returns a pointer to the interface implementing PPB_FileIO that is exposed
+  // to the plugin.
+  static const PPB_FileIO* GetInterface();
+
+  // Returns a pointer to the interface implementing PPB_FileIOTrusted that is
+  // exposed to the plugin.
+  static const PPB_FileIOTrusted* GetTrustedInterface();
+
+  // Resource overrides.
+  FileIO* AsFileIO() { return this; }
+
+  // PPB_FileIO implementation.
+  int32_t Open(FileRef* file_ref,
+               int32_t open_flags,
+               PP_CompletionCallback callback);
+  int32_t Query(PP_FileInfo* info,
+                PP_CompletionCallback callback);
+  int32_t Touch(PP_Time last_access_time,
+                PP_Time last_modified_time,
+                PP_CompletionCallback callback);
+  int32_t Read(int64_t offset,
+               char* buffer,
+               int32_t bytes_to_read,
+               PP_CompletionCallback callback);
+  int32_t Write(int64_t offset,
+                const char* buffer,
+                int32_t bytes_to_write,
+                PP_CompletionCallback callback);
+  int32_t SetLength(int64_t length,
+                    PP_CompletionCallback callback);
+  int32_t Flush(PP_CompletionCallback callback);
+  void Close();
+
+  // PPB_FileIOTrusted implementation.
+  int32_t GetOSFileDescriptor();
+  int32_t WillWrite(int64_t offset,
+                    int32_t bytes_to_write,
+                    PP_CompletionCallback callback);
+  int32_t WillSetLength(int64_t length,
+                        PP_CompletionCallback callback);
+};
+
+}  // namespace pepper
+
+#endif  // WEBKIT_GLUE_PLUGINS_PEPPER_FILE_IO_H_