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/*
* Copyright (C) 2010 Google 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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 "BlobItem.h"
#include "FileSystem.h"
#include "UUID.h"
#include <wtf/Assertions.h>
namespace WebCore {
#if ENABLE(BLOB)
static const double invalidModificationTime = 0;
static double getFileSnapshotModificationTime(const String& path)
{
// FIXME: synchronized file call
time_t modificationTime;
if (getFileModificationTime(path, modificationTime))
return static_cast<double>(modificationTime);
return invalidModificationTime;
}
#endif // ENABLE(BLOB)
// DataBlobItem ----------------------------------------------------------------
#if ENABLE(BLOB)
PassRefPtr<BlobItem> DataBlobItem::slice(long long start, long long length)
{
ASSERT(start >= 0 && length >= 0);
ASSERT(static_cast<unsigned long long>(start) < size());
if (!start && size() <= static_cast<unsigned long long>(length))
return this;
if (static_cast<unsigned long long>(start + length) > size())
length = size() - start;
return DataRangeBlobItem::create(this, start, length);
}
#endif
// FileBlobItem ----------------------------------------------------------------
PassRefPtr<BlobItem> FileBlobItem::create(const String& path)
{
return adoptRef(static_cast<BlobItem*>(new FileBlobItem(path)));
}
FileBlobItem::FileBlobItem(const String& path)
: m_path(path)
, m_fileName(pathGetFileName(m_path))
{
}
#if ENABLE(DIRECTORY_UPLOAD)
PassRefPtr<BlobItem> FileBlobItem::create(const String& path, const String& relativePath)
{
return adoptRef(static_cast<BlobItem*>(new FileBlobItem(path, relativePath)));
}
FileBlobItem::FileBlobItem(const String& path, const String& relativePath)
: m_path(path)
, m_fileName(pathGetFileName(m_path))
, m_relativePath(relativePath)
{
}
#endif
unsigned long long FileBlobItem::size() const
{
// FIXME: synchronized file call
long long size;
if (!getFileSize(m_path, size))
return 0;
return static_cast<unsigned long long>(size);
}
#if ENABLE(BLOB)
PassRefPtr<BlobItem> FileBlobItem::slice(long long start, long long length)
{
ASSERT(start >= 0 && length >= 0);
long long fileSize = size();
ASSERT(start < fileSize);
if (!start && fileSize <= length)
return this;
if (start + length > fileSize)
length = fileSize - start;
const FileRangeBlobItem* fileRangeItem = toFileRangeBlobItem();
double modificationTime = fileRangeItem ? fileRangeItem->snapshotModificationTime() : getFileSnapshotModificationTime(path());
return FileRangeBlobItem::create(path(), start, length, modificationTime);
}
#endif // ENABLE(BLOB)
// StringBlobItem --------------------------------------------------------------
PassRefPtr<BlobItem> StringBlobItem::create(const CString& text)
{
return adoptRef(static_cast<BlobItem*>(new StringBlobItem(text)));
}
StringBlobItem::StringBlobItem(const CString& text)
: m_data(text)
{
}
// ByteArrayBlobItem ----------------------------------------------------------
PassRefPtr<BlobItem> ByteArrayBlobItem::create(const char* data, size_t size)
{
return adoptRef(static_cast<BlobItem*>(new ByteArrayBlobItem(data, size)));
}
ByteArrayBlobItem::ByteArrayBlobItem(const char* data, size_t size)
{
m_bytesArray.append(data, size);
}
#if ENABLE(BLOB)
// DataRangeBlobItem -----------------------------------------------------------
PassRefPtr<BlobItem> DataRangeBlobItem::create(PassRefPtr<DataBlobItem> item, long long start, long long length)
{
return adoptRef(static_cast<BlobItem*>(new DataRangeBlobItem(item, start, length)));
}
DataRangeBlobItem::DataRangeBlobItem(PassRefPtr<DataBlobItem> item, long long start, long long length)
: m_length(length)
{
const DataRangeBlobItem* rangeItem = item->toDataRangeBlobItem();
if (rangeItem) {
m_item = rangeItem->m_item;
m_start = start + rangeItem->m_start;
ASSERT(!m_item->toDataRangeBlobItem());
ASSERT(static_cast<unsigned long long>(m_start + m_length) <= m_item->size());
} else {
m_item = item;
m_start = start;
}
}
const char* DataRangeBlobItem::data() const
{
return m_item->data() + m_start;
}
// FileRangeBlobItem -----------------------------------------------------------
PassRefPtr<BlobItem> FileRangeBlobItem::create(const String& path, long long start, long long length, double snapshotModificationTime)
{
return adoptRef(static_cast<BlobItem*>(new FileRangeBlobItem(path, start, length, snapshotModificationTime)));
}
FileRangeBlobItem::FileRangeBlobItem(const String& path, long long start, long long length, double modificationTime)
: FileBlobItem(path)
, m_start(start)
, m_length(length)
, m_snapshotModificationTime(modificationTime)
{
m_uniqueName = "Blob" + createCanonicalUUIDString();
m_uniqueName.replace("-", ""); // For safty, remove '-' from the filename snce some servers may not like it.
}
#endif // ENABLE(BLOB)
} // namespace WebCore
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