String FileReaderLoader::stringResult()
{
ASSERT(m_readType != ReadAsArrayBuffer && m_readType != ReadAsBlob);
// If the loading is not started or an error occurs, return an empty result.
if (!m_rawData || m_errorCode)
return m_stringResult;
// If already converted from the raw data, return the result now.
if (m_isRawDataConverted)
return m_stringResult;
switch (m_readType) {
case ReadAsArrayBuffer:
// No conversion is needed.
break;
case ReadAsBinaryString:
m_stringResult = String(static_cast<const char*>(m_rawData->data()), m_bytesLoaded);
break;
case ReadAsText:
convertToText();
break;
case ReadAsDataURL:
// Partial data is not supported when reading as data URL.
if (isCompleted())
convertToDataURL();
break;
default:
ASSERT_NOT_REACHED();
}
return m_stringResult;
}
void FileReaderSync::read(ScriptExecutionContext* scriptExecutionContext, Blob* blob, ReadType readType, ExceptionCode& ec)
{
// The blob is read by routing through the request handling layer given the temporary public url.
KURL urlForReading = BlobURL::createPublicURL(scriptExecutionContext->securityOrigin());
ThreadableBlobRegistry::registerBlobURL(urlForReading, blob->url());
ResourceRequest request(urlForReading);
request.setHTTPMethod("GET");
FileReaderSyncLoader loader((readType == ReadAsBinaryString) ? &m_result : 0);
loader.start(scriptExecutionContext, request, ec);
ThreadableBlobRegistry::unregisterBlobURL(urlForReading);
if (ec)
return;
switch (readType) {
case ReadAsBinaryString:
// Nothing to do since we need no conversion.
return;
case ReadAsText:
convertToText(loader.rawData().data(), loader.rawData().size(), m_result);
return;
case ReadAsDataURL:
FileReader::convertToDataURL(loader.rawData(), blob->type(), m_result);
return;
}
ASSERT_NOT_REACHED();
}
String FileReaderLoader::stringResult()
{
ASSERT(m_readType != ReadAsArrayBuffer && m_readType != ReadAsBlob && m_readType != ReadByClient);
// If the loading is not started or an error occurs, return an empty result.
if (!m_rawData || m_errorCode)
return m_stringResult;
// If already converted from the raw data, return the result now.
if (m_isRawDataConverted)
return m_stringResult;
switch (m_readType) {
case ReadAsArrayBuffer:
// No conversion is needed.
break;
case ReadAsBinaryString:
m_stringResult = m_rawData->toString();
m_isRawDataConverted = true;
break;
case ReadAsText:
convertToText();
break;
case ReadAsDataURL:
// Partial data is not supported when reading as data URL.
if (m_finishedLoading)
convertToDataURL();
break;
default:
ASSERT_NOT_REACHED();
}
return m_stringResult;
}
const ScriptString& FileReader::result()
{
// If reading as binary string, we can return the result immediately.
if (m_readType == ReadFileAsBinaryString)
return m_result;
// If we already convert the raw data received so far, we can return the result now.
if (m_isRawDataConverted)
return m_result;
m_isRawDataConverted = true;
if (m_readType == ReadFileAsText)
convertToText();
// For data URL, we only do the coversion until we receive all the raw data.
else if (m_readType == ReadFileAsDataURL && m_state == Completed)
convertToDataURL(m_rawData, m_fileType, m_result);
return m_result;
}