Hi, You've got the source / destination backwards.
readBytes reads *from* the object on which the method is called. And it writes *to* the ByteArray you pass in the first parameter. So this: var newBA:ByteArray = new ByteArray(); newBA.readBytes(_ba); _ba = newBA; Is copying data *from* newBA *to* _ba. You want the opposite, so it should read: var newBA:ByteArray = new ByteArray(); _ba.readBytes(newBA); _ba = newBA; You can also do the read / write in place. It's a just bit more contrived but I'm not sure if it's worth it (it's less readable, I think). Here's how you'd do it, anyway: // let's assume for brevity that you've read 6 bytes from your original buffer and you still have data left (i.e., len > 6) var offset:int = 6; // how much to read? All of the remaining data, which is the current length, minus your current position (we said it was 6) var newLen:int = _ba.length - offset; // Read the data starting at current position and write it to the same buffer, starting to write at the first byte. // 0 is the offset in the *destination*. We want to copy the 6th byte into the 0th position, that's why we pass 0. // the third parameter tells the method how much to read from the *source* // for what you want you don't actually need to pass these two last parameters, since by default readBytes will write to *dest* at offset 0 // and will read from *source* all available data (i.e. from current position to length -1) _ba.readBytes(_ba,0,newLen); // you do need to set this since this read/wirte is in place and you want to shrink the buffer. Othewise, you'll end up with garbage after at the end of the byte array. _ba.length = newLen; And that's it. Hope it helps. Cheers Juan Pablo Califano 2010/2/23 Alexander Farber <[email protected]> > Hello, > > sorry, but I'll try to start another thread to explain my problem. > > I read data from a socket into a ByteArray _ba and keep inspecting it. > When there is enough data, I'd like to extract and process it and > remove the processed bytes from the _ba. > > Here is how I try to do the removal, but it doesn't work (newBA is empty) > > var newBA:ByteArray = new ByteArray(); > newBA.readBytes(_ba); > _ba = newBA; > > My complete code is at: http://pastebin.com/esz4As6D > > Thank you > Alex > _______________________________________________ > Flashcoders mailing list > [email protected] > http://chattyfig.figleaf.com/mailman/listinfo/flashcoders > _______________________________________________ Flashcoders mailing list [email protected] http://chattyfig.figleaf.com/mailman/listinfo/flashcoders
