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      1 /*
      2  * Copyright (C) 2008 Apple 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
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
     14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
     17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
     18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
     19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
     20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
     21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "File.h"
     28 
     29 #include "FileSystem.h"
     30 #include "MIMETypeRegistry.h"
     31 #include <wtf/CurrentTime.h>
     32 #include <wtf/text/WTFString.h>
     33 
     34 namespace WebCore {
     35 
     36 static PassOwnPtr<BlobData> createBlobDataForFile(const String& path)
     37 {
     38     String type;
     39     int index = path.reverseFind('.');
     40     if (index != -1)
     41         type = MIMETypeRegistry::getMIMETypeForExtension(path.substring(index + 1));
     42 
     43     OwnPtr<BlobData> blobData = BlobData::create();
     44     blobData->setContentType(type);
     45     blobData->appendFile(path);
     46     return blobData.release();
     47 }
     48 
     49 File::File(const String& path)
     50     : Blob(createBlobDataForFile(path), -1)
     51     , m_path(path)
     52     , m_name(pathGetFileName(path))
     53 {
     54 }
     55 
     56 File::File(const String& path, const KURL& url, const String& type)
     57     : Blob(url, type, -1)
     58     , m_path(path)
     59 {
     60     m_name = pathGetFileName(path);
     61 }
     62 
     63 #if ENABLE(DIRECTORY_UPLOAD)
     64 File::File(const String& relativePath, const String& path)
     65     : Blob(createBlobDataForFile(path), -1)
     66     , m_path(path)
     67     , m_relativePath(relativePath)
     68 {
     69     m_name = pathGetFileName(path);
     70 }
     71 #endif
     72 
     73 double File::lastModifiedDate() const
     74 {
     75     time_t modificationTime;
     76     if (!getFileModificationTime(m_path, modificationTime))
     77         return 0;
     78 
     79     // Needs to return epoch time in milliseconds for Date.
     80     return modificationTime * 1000.0;
     81 }
     82 
     83 unsigned long long File::size() const
     84 {
     85     // FIXME: JavaScript cannot represent sizes as large as unsigned long long, we need to
     86     // come up with an exception to throw if file size is not representable.
     87     long long size;
     88     if (!getFileSize(m_path, size))
     89         return 0;
     90     return static_cast<unsigned long long>(size);
     91 }
     92 
     93 void File::captureSnapshot(long long& snapshotSize, double& snapshotModificationTime) const
     94 {
     95     // Obtains a snapshot of the file by capturing its current size and modification time. This is used when we slice a file for the first time.
     96     // If we fail to retrieve the size or modification time, probably due to that the file has been deleted, 0 size is returned.
     97     // FIXME: Combine getFileSize and getFileModificationTime into one file system call.
     98     time_t modificationTime;
     99     if (!getFileSize(m_path, snapshotSize) || !getFileModificationTime(m_path, modificationTime)) {
    100         snapshotSize = 0;
    101         snapshotModificationTime = 0;
    102     } else
    103         snapshotModificationTime = modificationTime;
    104 }
    105 
    106 } // namespace WebCore
    107