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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "File.h"
#include "FileMetadata.h"
#include "FileSystem.h"
#include "MIMETypeRegistry.h"
#include <wtf/CurrentTime.h>
#include <wtf/DateMath.h>
#include <wtf/text/WTFString.h>
namespace WebCore {
static String getContentTypeFromFileName(const String& name, File::ContentTypeLookupPolicy policy)
{
String type;
int index = name.reverseFind('.');
if (index != -1) {
if (policy == File::WellKnownContentTypes)
type = MIMETypeRegistry::getWellKnownMIMETypeForExtension(name.substring(index + 1));
else {
ASSERT(policy == File::AllContentTypes);
type = MIMETypeRegistry::getMIMETypeForExtension(name.substring(index + 1));
}
}
return type;
}
static PassOwnPtr<BlobData> createBlobDataForFileWithType(const String& path, const String& contentType)
{
OwnPtr<BlobData> blobData = BlobData::create();
ASSERT(Blob::isNormalizedContentType(contentType));
blobData->setContentType(contentType);
blobData->appendFile(path);
return blobData.release();
}
static PassOwnPtr<BlobData> createBlobDataForFile(const String& path, File::ContentTypeLookupPolicy policy)
{
return createBlobDataForFileWithType(path, getContentTypeFromFileName(path, policy));
}
static PassOwnPtr<BlobData> createBlobDataForFileWithName(const String& path, const String& fileSystemName, File::ContentTypeLookupPolicy policy)
{
return createBlobDataForFileWithType(path, getContentTypeFromFileName(fileSystemName, policy));
}
#if ENABLE(FILE_SYSTEM)
static PassOwnPtr<BlobData> createBlobDataForFileWithMetadata(const String& fileSystemName, const FileMetadata& metadata)
{
OwnPtr<BlobData> blobData = BlobData::create();
blobData->setContentType(getContentTypeFromFileName(fileSystemName, File::WellKnownContentTypes));
blobData->appendFile(metadata.platformPath, 0, metadata.length, metadata.modificationTime);
return blobData.release();
}
static PassOwnPtr<BlobData> createBlobDataForFileSystemURL(const KURL& fileSystemURL, const FileMetadata& metadata)
{
OwnPtr<BlobData> blobData = BlobData::create();
blobData->setContentType(getContentTypeFromFileName(fileSystemURL.path(), File::WellKnownContentTypes));
blobData->appendURL(fileSystemURL, 0, metadata.length, metadata.modificationTime);
return blobData.release();
}
#endif
#if ENABLE(DIRECTORY_UPLOAD)
PassRefPtr<File> File::createWithRelativePath(const String& path, const String& relativePath)
{
RefPtr<File> file = adoptRef(new File(path, AllContentTypes));
file->m_relativePath = relativePath;
return file.release();
}
#endif
File::File(const String& path, ContentTypeLookupPolicy policy)
: Blob(createBlobDataForFile(path, policy), -1)
, m_path(path)
, m_name(pathGetFileName(path))
#if ENABLE(FILE_SYSTEM)
, m_snapshotSize(-1)
, m_snapshotModificationTime(invalidFileTime())
#endif
{
}
File::File(const String& path, const KURL& url, const String& type)
: Blob(url, type, -1)
, m_path(path)
#if ENABLE(FILE_SYSTEM)
, m_snapshotSize(-1)
, m_snapshotModificationTime(invalidFileTime())
#endif
{
m_name = pathGetFileName(path);
// FIXME: File object serialization/deserialization does not include
// newer file object data members: m_name and m_relativePath.
// See SerializedScriptValue.cpp
}
File::File(const String& path, const String& name, ContentTypeLookupPolicy policy)
: Blob(createBlobDataForFileWithName(path, name, policy), -1)
, m_path(path)
, m_name(name)
#if ENABLE(FILE_SYSTEM)
, m_snapshotSize(-1)
, m_snapshotModificationTime(invalidFileTime())
#endif
{
}
#if ENABLE(FILE_SYSTEM)
File::File(const String& name, const FileMetadata& metadata)
: Blob(createBlobDataForFileWithMetadata(name, metadata), metadata.length)
, m_path(metadata.platformPath)
, m_name(name)
, m_snapshotSize(metadata.length)
, m_snapshotModificationTime(metadata.modificationTime)
{
}
File::File(const KURL& fileSystemURL, const FileMetadata& metadata)
: Blob(createBlobDataForFileSystemURL(fileSystemURL, metadata), metadata.length)
, m_fileSystemURL(fileSystemURL)
, m_snapshotSize(metadata.length)
, m_snapshotModificationTime(metadata.modificationTime)
{
}
#endif
double File::lastModifiedDate() const
{
#if ENABLE(FILE_SYSTEM)
if (hasValidSnapshotMetadata() && isValidFileTime(m_snapshotModificationTime))
return m_snapshotModificationTime * msPerSecond;
#endif
time_t modificationTime;
if (getFileModificationTime(m_path, modificationTime) && isValidFileTime(modificationTime))
return modificationTime * msPerSecond;
return currentTime() * msPerSecond;
}
unsigned long long File::size() const
{
#if ENABLE(FILE_SYSTEM)
if (hasValidSnapshotMetadata())
return m_snapshotSize;
#endif
// FIXME: JavaScript cannot represent sizes as large as unsigned long long, we need to
// come up with an exception to throw if file size is not representable.
long long size;
if (!getFileSize(m_path, size))
return 0;
return static_cast<unsigned long long>(size);
}
void File::captureSnapshot(long long& snapshotSize, double& snapshotModificationTime) const
{
#if ENABLE(FILE_SYSTEM)
if (hasValidSnapshotMetadata()) {
snapshotSize = m_snapshotSize;
snapshotModificationTime = m_snapshotModificationTime;
return;
}
#endif
// 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.
// If we fail to retrieve the size or modification time, probably due to that the file has been deleted, 0 size is returned.
FileMetadata metadata;
if (!getFileMetadata(m_path, metadata)) {
snapshotSize = 0;
snapshotModificationTime = invalidFileTime();
return;
}
snapshotSize = metadata.length;
snapshotModificationTime = metadata.modificationTime;
}
} // namespace WebCore
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