status_t String16::insert(size_t pos, const char16_t* chrs, size_t len)
{
const size_t myLen = size();
if (myLen == 0) {
return setTo(chrs, len);
return NO_ERROR;
} else if (len == 0) {
return NO_ERROR;
}
if (pos > myLen) pos = myLen;
#if 0
printf("Insert in to %s: pos=%d, len=%d, myLen=%d, chrs=%s\n",
String8(*this).string(), pos,
len, myLen, String8(chrs, len).string());
#endif
SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
->editResize((myLen+len+1)*sizeof(char16_t));
if (buf) {
char16_t* str = (char16_t*)buf->data();
if (pos < myLen) {
memmove(str+pos+len, str+pos, (myLen-pos)*sizeof(char16_t));
}
memcpy(str+pos, chrs, len*sizeof(char16_t));
str[myLen+len] = 0;
mString = str;
#if 0
printf("Result (%d chrs): %s\n", size(), String8(*this).string());
#endif
return NO_ERROR;
}
return NO_MEMORY;
}
static char16_t* allocFromUTF8(const char* u8str, size_t u8len)
{
if (u8len == 0) return getEmptyString();
const uint8_t* u8cur = (const uint8_t*) u8str;
const ssize_t u16len = utf8_to_utf16_length(u8cur, u8len);
if (u16len < 0) {
return getEmptyString();
}
SharedBuffer* buf = SharedBuffer::alloc(sizeof(char16_t)*(u16len+1));
if (buf) {
u8cur = (const uint8_t*) u8str;
char16_t* u16str = (char16_t*)buf->data();
utf8_to_utf16(u8cur, u8len, u16str);
//printf("Created UTF-16 string from UTF-8 \"%s\":", in);
//printHexData(1, str, buf->size(), 16, 1);
//printf("\n");
return u16str;
}
return getEmptyString();
}
void DocumentLoader::substituteResourceDeliveryTimerFired(Timer<DocumentLoader>*)
{
if (m_pendingSubstituteResources.isEmpty())
return;
ASSERT(m_frame && m_frame->page());
if (m_frame->page()->defersLoading())
return;
SubstituteResourceMap copy;
copy.swap(m_pendingSubstituteResources);
SubstituteResourceMap::const_iterator end = copy.end();
for (SubstituteResourceMap::const_iterator it = copy.begin(); it != end; ++it) {
RefPtr<ResourceLoader> loader = it->first;
SubstituteResource* resource = it->second.get();
if (resource) {
SharedBuffer* data = resource->data();
loader->didReceiveResponse(resource->response());
loader->didReceiveData(data->data(), data->size(), data->size(), true);
loader->didFinishLoading();
} else {
// A null resource means that we should fail the load.
// FIXME: Maybe we should use another error here - something like "not in cache".
loader->didFail(loader->cannotShowURLError());
}
}
}
SkData* ImageFrameGenerator::refEncodedData()
{
// SkData is returned only when full image (encoded) data is received. This is important
// since DeferredImageDecoder::setData is called only once with allDataReceived set to true,
// and after that m_data->m_readBuffer.data() is not changed. See also RELEASE_ASSERT used in
// ThreadSafeDataTransport::data().
SharedBuffer* buffer = 0;
bool allDataReceived = false;
m_data->data(&buffer, &allDataReceived);
if (!allDataReceived)
return nullptr;
{
// Prevents concurrent access to m_encodedData creation.
MutexLocker lock(m_decodeMutex);
if (m_encodedData) {
m_encodedData->ref();
return m_encodedData;
}
// m_encodedData is created with initial reference count == 1. ImageFrameGenerator always holds one
// reference to m_encodedData, as it prevents write access in SkData::writable_data.
m_encodedData = SkData::NewWithProc(buffer->data(), buffer->size(), sharedSkDataReleaseCallback, m_data.get());
// While m_encodedData is referenced, prevent disposing m_data and its content.
// it is dereferenced in sharedSkDataReleaseCallback, called when m_encodedData gets dereferenced.
m_data->ref();
}
// Increase the reference, caller must decrease it. One reference is always kept by ImageFrameGenerator and released
// in destructor.
m_encodedData->ref();
return m_encodedData;
}
void initialize_string16()
{
SharedBuffer* buf = SharedBuffer::alloc(sizeof(char16_t));
char16_t* str = (char16_t*)buf->data();
*str = 0;
gEmptyStringBuf = buf;
gEmptyString = str;
}
size_t getBytesWithOffset(void *info, void* buffer, size_t offset, size_t count)
{
SharedBuffer* sharedBuffer = static_cast<SharedBuffer*>(info);
size_t availBytes = count;
if (offset + count > sharedBuffer->size())
availBytes -= (offset + count) - sharedBuffer->size();
memcpy(buffer, sharedBuffer->data() + offset, availBytes);
return availBytes;
}
void* VectorImpl::editArrayImpl()
{
if (mStorage) {
const SharedBuffer* sb = SharedBuffer::bufferFromData(mStorage);
SharedBuffer* editable = sb->attemptEdit();
if (editable == 0) {
// If we're here, we're not the only owner of the buffer.
// We must make a copy of it.
editable = SharedBuffer::alloc(sb->size());
// Fail instead of returning a pointer to storage that's not
// editable. Otherwise we'd be editing the contents of a buffer
// for which we're not the only owner, which is undefined behaviour.
LOG_ALWAYS_FATAL_IF(editable == NULL);
_do_copy(editable->data(), mStorage, mCount);
release_storage();
mStorage = editable->data();
}
}
return mStorage;
}
char* String8::lockBuffer(size_t size)
{
SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
->editResize(size + 1);
if (buf) {
char* str = (char*)buf->data();
mString = str;
return str;
}
return NULL;
}
void* BasicHashtableImpl::allocateBuckets(size_t count) const {
size_t bytes = count * mBucketSize;
SharedBuffer* sb = SharedBuffer::alloc(bytes);
LOG_ALWAYS_FATAL_IF(!sb, "Could not allocate %u bytes for hashtable with %u buckets.",
uint32_t(bytes), uint32_t(count));
void* buckets = sb->data();
for (size_t i = 0; i < count; i++) {
Bucket& bucket = bucketAt(buckets, i);
bucket.cookie = 0;
}
return buckets;
}
SharedBuffer* SharedBuffer::edit() const
{
if (onlyOwner()) {
return const_cast<SharedBuffer*>(this);
}
SharedBuffer* sb = alloc(mSize);
if (sb) {
memcpy(sb->data(), data(), size());
release();
}
return sb;
}
size_t sharedBufferGetBytesAtPosition(void* info, void* buffer, off_t position, size_t count)
{
SharedBuffer* sharedBuffer = static_cast<SharedBuffer*>(info);
size_t sourceSize = sharedBuffer->size();
if (position >= sourceSize)
return 0;
const char* source = sharedBuffer->data() + position;
size_t amount = min<size_t>(count, sourceSize - position);
memcpy(buffer, source, amount);
return amount;
}
status_t String16::setTo(const char16_t* other, size_t len)
{
SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
->editResize((len+1)*sizeof(char16_t));
if (buf) {
char16_t* str = (char16_t*)buf->data();
memmove(str, other, len*sizeof(char16_t));
str[len] = 0;
mString = str;
return NO_ERROR;
}
return NO_MEMORY;
}
void initialize_string8()
{
#ifdef LIBUTILS_NATIVE
// Bite me, Darwin!
gDarwinIsReallyAnnoying = gDarwinCantLoadAllObjects;
#endif
SharedBuffer* buf = SharedBuffer::alloc(1);
char* str = (char*)buf->data();
*str = 0;
gEmptyStringBuf = buf;
gEmptyString = str;
}
std::unique_ptr<FontCustomPlatformData> createFontCustomPlatformData(SharedBuffer& buffer)
{
static FT_Library library;
if (!library && FT_Init_FreeType(&library)) {
library = nullptr;
return nullptr;
}
FT_Face freeTypeFace;
if (FT_New_Memory_Face(library, reinterpret_cast<const FT_Byte*>(buffer.data()), buffer.size(), 0, &freeTypeFace))
return nullptr;
return std::make_unique<FontCustomPlatformData>(freeTypeFace, buffer);
}
static bool canHandleImage(const SharedBuffer& _data)
{
// We need at least 4 bytes to figure out what kind of image we're dealing with.
if (_data.size() < 4)
return false;
QByteArray data = QByteArray::fromRawData(_data.data(), _data.size());
QBuffer buffer(&data);
if (!buffer.open(QBuffer::ReadOnly))
return false;
return !QImageReader::imageFormat(&buffer).isEmpty();
}
String16::String16(const char16_t* o, size_t len)
{
SharedBuffer* buf = SharedBuffer::alloc((len+1)*sizeof(char16_t));
ALOG_ASSERT(buf, "Unable to allocate shared buffer");
if (buf) {
char16_t* str = (char16_t*)buf->data();
memcpy(str, o, len*sizeof(char16_t));
str[len] = 0;
mString = str;
return;
}
mString = getEmptyString();
}
extern "C" void initialize_string8(){
// HACK: This dummy dependency forces linking libutils Static.cpp,
// which is needed to initialize String8/String16 classes.
// These variables are named for Darwin, but are needed elsewhere too,
// including static linking on any platform.
//gDarwinIsReallyAnnoying = gDarwinCantLoadAllObjects;
if (!gEmptyStringBuf) {
SharedBuffer* buf = SharedBuffer::alloc(1);
char* str = (char*)buf->data();
*str = 0;
gEmptyStringBuf = buf;
gEmptyString = str;
}
}
String16::String16(const char16_t* o)
{
size_t len = strlen16(o);
SharedBuffer* buf = SharedBuffer::alloc((len+1)*sizeof(char16_t));
ALOG_ASSERT(buf, "Unable to allocate shared buffer");
if (buf) {
char16_t* str = (char16_t*)buf->data();
strcpy16(str, o);
mString = str;
return;
}
mString = getEmptyString();
}
status_t String8::unlockBuffer(size_t size)
{
if (size != this->size()) {
SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
->editResize(size+1);
if (buf) {
char* str = (char*)buf->data();
str[size] = 0;
mString = str;
return NO_ERROR;
}
}
return NO_MEMORY;
}
static char* allocFromUTF8(const char* in, size_t len)
{
if (len > 0) {
SharedBuffer* buf = SharedBuffer::alloc(len+1);
if (buf) {
char* str = (char*)buf->data();
memcpy(str, in, len);
str[len] = 0;
return str;
}
return NULL;
}
return getEmptyString();
}
static xmlDocPtr docLoaderFunc(const xmlChar* uri,
xmlDictPtr,
int options,
void* ctxt,
xsltLoadType type)
{
if (!globalProcessor)
return 0;
switch (type) {
case XSLT_LOAD_DOCUMENT: {
xsltTransformContextPtr context = (xsltTransformContextPtr)ctxt;
xmlChar* base = xmlNodeGetBase(context->document->doc, context->node);
KURL url(KURL(ParsedURLString, reinterpret_cast<const char*>(base)), reinterpret_cast<const char*>(uri));
xmlFree(base);
ResourceLoaderOptions fetchOptions(ResourceFetcher::defaultResourceOptions());
FetchRequest request(ResourceRequest(url), FetchInitiatorTypeNames::xml, fetchOptions);
request.setOriginRestriction(FetchRequest::RestrictToSameOrigin);
ResourcePtr<Resource> resource = globalResourceFetcher->fetchSynchronously(request);
if (!resource || !globalProcessor)
return 0;
PageConsole* console = 0;
Frame* frame = globalProcessor->xslStylesheet()->ownerDocument()->frame();
if (frame && frame->page())
console = &frame->page()->console();
xmlSetStructuredErrorFunc(console, XSLTProcessor::parseErrorFunc);
xmlSetGenericErrorFunc(console, XSLTProcessor::genericErrorFunc);
// We don't specify an encoding here. Neither Gecko nor WinIE respects
// the encoding specified in the HTTP headers.
SharedBuffer* data = resource->resourceBuffer();
xmlDocPtr doc = data ? xmlReadMemory(data->data(), data->size(), (const char*)uri, 0, options) : 0;
xmlSetStructuredErrorFunc(0, 0);
xmlSetGenericErrorFunc(0, 0);
return doc;
}
case XSLT_LOAD_STYLESHEET:
return globalProcessor->xslStylesheet()->locateStylesheetSubResource(((xsltStylesheetPtr)ctxt)->doc, uri);
default:
break;
}
return 0;
}
status_t String8::real_append(const char* other, size_t otherLen)
{
const size_t myLen = bytes();
SharedBuffer* buf = SharedBuffer::bufferFromData(mString)
->editResize(myLen + otherLen + 1);
if (buf) {
char* str = (char*)buf->data();
mString = str;
str += myLen;
memcpy(str, other, otherLen);
str[otherLen] = '\0';
return NO_ERROR;
}
return NO_MEMORY;
}
void SynchronousNetworkLoaderClient::sendDelayedReply(NetworkResourceLoader& loader)
{
ASSERT(m_delayedReply);
if (m_response.isNull()) {
ASSERT(!m_error.isNull());
//platformSynthesizeErrorResponse();
}
Vector<char> responseData;
SharedBuffer* buffer = loader.bufferedData();
if (buffer && buffer->size())
responseData.append(buffer->data(), buffer->size());
m_delayedReply->send(m_error, m_response, responseData);
m_delayedReply = nullptr;
}
void CachedResource::tryReplaceEncodedData(SharedBuffer& newBuffer)
{
if (!m_data)
return;
if (!mayTryReplaceEncodedData())
return;
// We have to do the memcmp because we can't tell if the replacement file backed data is for the
// same resource or if we made a second request with the same URL which gave us a different
// resource. We have seen this happen for cached POST resources.
if (m_data->size() != newBuffer.size() || memcmp(m_data->data(), newBuffer.data(), m_data->size()))
return;
if (m_data->tryReplaceContentsWithPlatformBuffer(newBuffer))
didReplaceSharedBufferContents();
}
static void sharedSkDataReleaseCallback(const void* address, void* context)
{
// This gets called when m_encodedData reference count becomes 0 - and it could happen in
// ImageFrameGenerator destructor or later when m_encodedData gets dereferenced.
// In this method, we deref ThreadSafeDataTransport, as ThreadSafeDataTransport is the owner
// of data returned via refEncodedData.
ThreadSafeDataTransport* dataTransport = static_cast<ThreadSafeDataTransport*>(context);
#if ENABLE(ASSERT)
ASSERT(dataTransport);
SharedBuffer* buffer = 0;
bool allDataReceived = false;
dataTransport->data(&buffer, &allDataReceived);
ASSERT(allDataReceived && buffer && buffer->data() == address);
#endif
// Dereference m_data now.
dataTransport->deref();
}
static char* allocFromUTF16(const char16_t* in, size_t len)
{
if (len == 0) return getEmptyString();
const ssize_t bytes = utf16_to_utf8_length(in, len);
if (bytes < 0) {
return getEmptyString();
}
SharedBuffer* buf = SharedBuffer::alloc(bytes+1);
if (!buf) {
return getEmptyString();
}
char* str = (char*)buf->data();
utf16_to_utf8(in, len, str);
return str;
}
static char* allocFromUTF16(const char16_t* in, size_t len)
{
if (len == 0) return getEmptyString();
const size_t bytes = utf8_length_from_utf16(in, len);
SharedBuffer* buf = SharedBuffer::alloc(bytes+1);
LOG_ASSERT(buf, "Unable to allocate shared buffer");
if (buf) {
char* str = (char*)buf->data();
utf16_to_utf8(in, len, str, bytes+1);
return str;
}
return getEmptyString();
}
PassRefPtr<API::Data> WebIconDatabase::iconDataForPageURL(const String& pageURL)
{
auto* image = imageForPageURL(pageURL);
if (!image)
return nullptr;
SharedBuffer* sharedBuffer = image->data();
if (!sharedBuffer)
return nullptr;
// Balanced by deref() below.
sharedBuffer->ref();
return API::Data::createWithoutCopying(reinterpret_cast<const unsigned char*>(sharedBuffer->data()), sharedBuffer->size(),
[](unsigned char*, const void* untypedSharedBuffer) {
// Balanced by ref() above.
static_cast<SharedBuffer*>(const_cast<void*>(untypedSharedBuffer))->deref();
}, sharedBuffer);
}
ssize_t VectorImpl::setCapacity(size_t new_capacity)
{
size_t current_capacity = capacity();
ssize_t amount = new_capacity - size();
if (amount <= 0) {
// we can't reduce the capacity
return current_capacity;
}
SharedBuffer* sb = SharedBuffer::alloc(new_capacity * mItemSize);
if (sb) {
void* array = sb->data();
_do_copy(array, mStorage, size());
release_storage();
mStorage = const_cast<void*>(array);
} else {
return NO_MEMORY;
}
return new_capacity;
}
SharedBuffer* SharedBuffer::editResize(size_t newSize) const
{
if (onlyOwner()) {
SharedBuffer* buf = const_cast<SharedBuffer*>(this);
if (buf->mSize == newSize) return buf;
buf = (SharedBuffer*)realloc(buf, sizeof(SharedBuffer) + newSize);
if (buf != NULL) {
buf->mSize = newSize;
return buf;
}
}
SharedBuffer* sb = alloc(newSize);
if (sb) {
const size_t mySize = mSize;
memcpy(sb->data(), data(), newSize < mySize ? newSize : mySize);
release();
}
return sb;
}
