mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
89 lines
2.3 KiB
C
89 lines
2.3 KiB
C
|
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
||
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||
|
|
|
||
|
|
#ifndef mozilla_dom_BlobSet_h
|
||
|
|
#define mozilla_dom_BlobSet_h
|
||
|
|
|
||
|
|
#include "mozilla/CheckedInt.h"
|
||
|
|
#include "mozilla/dom/File.h"
|
||
|
|
|
||
|
|
namespace mozilla {
|
||
|
|
namespace dom {
|
||
|
|
|
||
|
|
class BlobSet {
|
||
|
|
public:
|
||
|
|
BlobSet()
|
||
|
|
: mData(nullptr), mDataLen(0), mDataBufferLen(0)
|
||
|
|
{}
|
||
|
|
|
||
|
|
~BlobSet()
|
||
|
|
{
|
||
|
|
moz_free(mData);
|
||
|
|
}
|
||
|
|
|
||
|
|
nsresult AppendVoidPtr(const void* aData, uint32_t aLength);
|
||
|
|
nsresult AppendString(const nsAString& aString, bool nativeEOL, JSContext* aCx);
|
||
|
|
nsresult AppendBlobImpl(FileImpl* aBlobImpl);
|
||
|
|
nsresult AppendBlobImpls(const nsTArray<nsRefPtr<FileImpl>>& aBlobImpls);
|
||
|
|
|
||
|
|
nsTArray<nsRefPtr<FileImpl>>& GetBlobImpls() { Flush(); return mBlobImpls; }
|
||
|
|
|
||
|
|
already_AddRefed<File> GetBlobInternal(nsISupports* aParent,
|
||
|
|
const nsACString& aContentType);
|
||
|
|
|
||
|
|
protected:
|
||
|
|
bool ExpandBufferSize(uint64_t aSize)
|
||
|
|
{
|
||
|
|
using mozilla::CheckedUint32;
|
||
|
|
|
||
|
|
if (mDataBufferLen >= mDataLen + aSize) {
|
||
|
|
mDataLen += aSize;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
// Start at 1 or we'll loop forever.
|
||
|
|
CheckedUint32 bufferLen =
|
||
|
|
std::max<uint32_t>(static_cast<uint32_t>(mDataBufferLen), 1);
|
||
|
|
while (bufferLen.isValid() && bufferLen.value() < mDataLen + aSize)
|
||
|
|
bufferLen *= 2;
|
||
|
|
|
||
|
|
if (!bufferLen.isValid())
|
||
|
|
return false;
|
||
|
|
|
||
|
|
void* data = moz_realloc(mData, bufferLen.value());
|
||
|
|
if (!data)
|
||
|
|
return false;
|
||
|
|
|
||
|
|
mData = data;
|
||
|
|
mDataBufferLen = bufferLen.value();
|
||
|
|
mDataLen += aSize;
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
|
||
|
|
void Flush() {
|
||
|
|
if (mData) {
|
||
|
|
// If we have some data, create a blob for it
|
||
|
|
// and put it on the stack
|
||
|
|
|
||
|
|
nsRefPtr<FileImpl> blobImpl =
|
||
|
|
new FileImplMemory(mData, mDataLen, EmptyString());
|
||
|
|
mBlobImpls.AppendElement(blobImpl);
|
||
|
|
mData = nullptr; // The nsDOMMemoryFile takes ownership of the buffer
|
||
|
|
mDataLen = 0;
|
||
|
|
mDataBufferLen = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
nsTArray<nsRefPtr<FileImpl>> mBlobImpls;
|
||
|
|
void* mData;
|
||
|
|
uint64_t mDataLen;
|
||
|
|
uint64_t mDataBufferLen;
|
||
|
|
};
|
||
|
|
|
||
|
|
} // dom namespace
|
||
|
|
} // mozilla namespace
|
||
|
|
|
||
|
|
#endif // mozilla_dom_BlobSet_h
|