static void formEventCallback(CFReadStreamRef stream, CFStreamEventType type, void* context)
{
FormStreamFields* form = static_cast<FormStreamFields*>(context);
switch (type) {
case kCFStreamEventHasBytesAvailable:
CFReadStreamSignalEvent(form->formStream, kCFStreamEventHasBytesAvailable, 0);
break;
case kCFStreamEventErrorOccurred: {
CFStreamError readStreamError = CFReadStreamGetError(stream);
CFReadStreamSignalEvent(form->formStream, kCFStreamEventErrorOccurred, &readStreamError);
break;
}
case kCFStreamEventEndEncountered:
openNextStream(form);
if (!form->currentStream)
CFReadStreamSignalEvent(form->formStream, kCFStreamEventEndEncountered, 0);
break;
case kCFStreamEventNone:
LOG_ERROR("unexpected kCFStreamEventNone");
break;
case kCFStreamEventOpenCompleted:
LOG_ERROR("unexpected kCFStreamEventOpenCompleted");
break;
case kCFStreamEventCanAcceptBytes:
LOG_ERROR("unexpected kCFStreamEventCanAcceptBytes");
break;
}
}
static CFIndex formRead(CFReadStreamRef, UInt8* buffer, CFIndex bufferLength, CFStreamError* error, Boolean* atEOF, void* context)
{
FormStreamFields* form = static_cast<FormStreamFields*>(context);
while (form->currentStream) {
CFIndex bytesToRead = bufferLength;
if (form->currentStreamRangeLength != BlobDataItem::toEndOfFile && form->currentStreamRangeLength < bytesToRead)
bytesToRead = static_cast<CFIndex>(form->currentStreamRangeLength);
CFIndex bytesRead = CFReadStreamRead(form->currentStream, buffer, bytesToRead);
if (bytesRead < 0) {
*error = CFReadStreamGetError(form->currentStream);
return -1;
}
if (bytesRead > 0) {
error->error = 0;
*atEOF = FALSE;
form->bytesSent += bytesRead;
if (form->currentStreamRangeLength != BlobDataItem::toEndOfFile)
form->currentStreamRangeLength -= bytesRead;
return bytesRead;
}
openNextStream(form);
}
error->error = 0;
*atEOF = TRUE;
return 0;
}
static Boolean formOpen(CFReadStreamRef stream, CFStreamError* error, Boolean* openComplete, void* context)
{
FormStreamFields* form = static_cast<FormStreamFields*>(context);
openNextStream(form);
*openComplete = TRUE;
error->error = 0;
return TRUE;
}
static Boolean formCanRead(CFReadStreamRef stream, void* context)
{
FormStreamFields* form = static_cast<FormStreamFields*>(context);
while (form->currentStream && CFReadStreamGetStatus(form->currentStream) == kCFStreamStatusAtEnd)
openNextStream(form);
if (!form->currentStream) {
CFReadStreamSignalEvent(stream, kCFStreamEventEndEncountered, 0);
return FALSE;
}
return CFReadStreamHasBytesAvailable(form->currentStream);
}
static Boolean formOpen(CFReadStreamRef, CFStreamError* error, Boolean* openComplete, void* context)
{
FormStreamFields* form = static_cast<FormStreamFields*>(context);
bool opened = openNextStream(form);
*openComplete = opened;
error->error = opened ? 0 :
#if PLATFORM(WIN)
ENOENT;
#else
fnfErr;
#endif
return opened;
}
static CFIndex formRead(CFReadStreamRef stream, UInt8* buffer, CFIndex bufferLength, CFStreamError* error, Boolean* atEOF, void* context)
{
FormStreamFields* form = static_cast<FormStreamFields*>(context);
while (form->currentStream) {
CFIndex bytesRead = CFReadStreamRead(form->currentStream, buffer, bufferLength);
if (bytesRead < 0) {
*error = CFReadStreamGetError(form->currentStream);
return -1;
}
if (bytesRead > 0) {
error->error = 0;
*atEOF = FALSE;
return bytesRead;
}
openNextStream(form);
}
error->error = 0;
*atEOF = TRUE;
return 0;
}
