1 /*

     2  * Copyright (C) 2010 Google Inc. All rights reserved.

     3  *

     4  * Redistribution and use in source and binary forms, with or without

     5  * modification, are permitted provided that the following conditions are

     6  * met:

     7  *

     8  *     * Redistributions of source code must retain the above copyright

     9  * notice, this list of conditions and the following disclaimer.

    10  *     * Redistributions in binary form must reproduce the above

    11  * copyright notice, this list of conditions and the following disclaimer

    12  * in the documentation and/or other materials provided with the

    13  * distribution.

    14  *     * Neither the name of Google Inc. nor the names of its

    15  * contributors may be used to endorse or promote products derived from

    16  * this software without specific prior written permission.

    17  *

    18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

    19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

    20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

    21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

    22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

    23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

    24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

    25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

    26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

    27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

    28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

    29  */

    30 

    31 #ifndef WebFileSystem_h

    32 #define WebFileSystem_h

    33 

    34 #include "WebCommon.h"

    35 #include "WebString.h"

    36 #include "WebURL.h"

    37 

    38 namespace WebKit {

    39 

    40 class WebFileSystem {

    41 public:

    42 #ifdef WIN32

    43     typedef HANDLE FileHandle;

    44 #else

    45     typedef int FileHandle;

    46 #endif

    47 

    48     virtual bool fileExists(const WebString& path) { return false; }

    49     virtual bool deleteFile(const WebString& path) { return false; }

    50     virtual bool deleteEmptyDirectory(const WebString& path) { return false; }

    51     virtual bool getFileSize(const WebString& path, long long& result) { return false; }

    52     virtual bool getFileModificationTime(const WebString& path, double& result) { return false; }

    53     virtual WebString directoryName(const WebString& path)  { return WebString(); }

    54     virtual WebString pathByAppendingComponent(const WebString& path, const WebString& component)  { return WebString(); }

    55     virtual bool makeAllDirectories(const WebString& path) { return false; }

    56     virtual WebString getAbsolutePath(const WebString& path)  { return WebString(); }

    57     virtual bool isDirectory(const WebString& path) { return false; }

    58     virtual WebURL filePathToURL(const WebString& path)  { return WebURL(); }

    59     virtual FileHandle openFile(const WebString& path, int mode)  { return FileHandle(); }

    60     // Should set the FileHandle to a invalid value if the file is closed successfully.

    61     virtual void closeFile(FileHandle&) { }

    62     virtual long long seekFile(FileHandle, long long offset, int origin) { return 0; }

    63     virtual bool truncateFile(FileHandle, long long offset) { return false; }

    64     virtual int readFromFile(FileHandle, char* data, int length) { return 0; }

    65     virtual int writeToFile(FileHandle, const char* data, int length) { return 0; }

    66 

    67 protected:

    68     ~WebFileSystem() {}

    69 };

    70 

    71 } // namespace WebKit

    72 

    73 #endif