@Override
public void addContent(ChannelBuffer buffer, boolean last) throws IOException {
if (fileUpload instanceof MemoryFileUpload) {
if (fileUpload.length() + buffer.readableBytes() > limitSize) {
DiskFileUpload diskFileUpload =
new DiskFileUpload(
fileUpload.getName(),
fileUpload.getFilename(),
fileUpload.getContentType(),
fileUpload.getContentTransferEncoding(),
fileUpload.getCharset(),
definedSize);
if (((MemoryFileUpload) fileUpload).getChannelBuffer() != null) {
diskFileUpload.addContent(((MemoryFileUpload) fileUpload).getChannelBuffer(), last);
}
fileUpload = diskFileUpload;
}
}
fileUpload.addContent(buffer, last);
}
/**
* Read a FileUpload data as Byte (Binary) and add the bytes directly to the FileUpload. If the
* delimiter is found, the FileUpload is completed.
*
* @param delimiter
* @throws NotEnoughDataDecoderException Need more chunks but do not reset the readerInder since
* some values will be already added to the FileOutput
* @throws ErrorDataDecoderException write IO error occurs with the FileUpload
*/
private void readFileUploadByteMultipart(String delimiter)
throws NotEnoughDataDecoderException, ErrorDataDecoderException {
int readerIndex = undecodedChunk.readerIndex();
// found the decoder limit
boolean newLine = true;
int index = 0;
int lastPosition = undecodedChunk.readerIndex();
boolean found = false;
while (undecodedChunk.readable()) {
byte nextByte = undecodedChunk.readByte();
if (newLine) {
// Check the delimiter
if (nextByte == delimiter.codePointAt(index)) {
index++;
if (delimiter.length() == index) {
found = true;
break;
}
continue;
} else {
newLine = false;
index = 0;
// continue until end of line
if (nextByte == HttpCodecUtil.CR) {
if (undecodedChunk.readable()) {
nextByte = undecodedChunk.readByte();
if (nextByte == HttpCodecUtil.LF) {
newLine = true;
index = 0;
lastPosition = undecodedChunk.readerIndex() - 2;
}
}
} else if (nextByte == HttpCodecUtil.LF) {
newLine = true;
index = 0;
lastPosition = undecodedChunk.readerIndex() - 1;
} else {
// save last valid position
lastPosition = undecodedChunk.readerIndex();
}
}
} else {
// continue until end of line
if (nextByte == HttpCodecUtil.CR) {
if (undecodedChunk.readable()) {
nextByte = undecodedChunk.readByte();
if (nextByte == HttpCodecUtil.LF) {
newLine = true;
index = 0;
lastPosition = undecodedChunk.readerIndex() - 2;
}
}
} else if (nextByte == HttpCodecUtil.LF) {
newLine = true;
index = 0;
lastPosition = undecodedChunk.readerIndex() - 1;
} else {
// save last valid position
lastPosition = undecodedChunk.readerIndex();
}
}
}
ChannelBuffer buffer = undecodedChunk.slice(readerIndex, lastPosition - readerIndex);
if (found) {
// found so lastPosition is correct and final
try {
currentFileUpload.addContent(buffer, true);
// just before the CRLF and delimiter
undecodedChunk.readerIndex(lastPosition);
} catch (IOException e) {
throw new ErrorDataDecoderException(e);
}
} else {
// possibly the delimiter is partially found but still the last position is OK
try {
currentFileUpload.addContent(buffer, false);
// last valid char (not CR, not LF, not beginning of delimiter)
undecodedChunk.readerIndex(lastPosition);
throw new NotEnoughDataDecoderException();
} catch (IOException e) {
throw new ErrorDataDecoderException(e);
}
}
}