More String Concaternation

Heavy

Ok so I'm new at this propeller stuff. I want to join 2 strings into a third string, but I have failed miserably at all attempts. Here's my code.

Here's the relevant parts of my code:


VAR
·· byte nextfile·
·· byte newfile[noparse][[/noparse]8]
·· byte fileext

PUB start· | cog_ID
fileext := String(".csv")
nextfile := String("test")
bytemove(@newfile ,@nextfile,strsize(nextfile))
bytemove(@newfile + 4,@fileext,strsize(fileext) + 1)


This is what I get on the Serial terminal:
nextfile =test
fileext =
newfile =test

What I want is for newfile to be the combination of nextfile and fileext.

Any help would be appreciated. Thanks
·

Phil Pilgrim (PhiPi)

The string function returns a word address. Your fileext and nextfile variables are bytes (i.e. too short). Make them word variables. Since nextfile and fileext are already addresses, you do not want to prepend an @ to them in your bytemove commands. Also, newfile needs to be one byte longer to accommodate the zero terminator.

-Phil

Heavy

Thanks for your help. I was wondering if you could help with my next problem.
How would I go about joining the two strings if nextfile is a number. I've dowloaded Numbers.spin , but I can't seem to get Num.ToStr to work.

Post Edited (Heavy) : 7/5/2010 11:22:05 PM GMT

Ariba

Try this:

  fileext := String(".csv")
  nextfile := num.toStr( 123, num#DEC)
  bytemove(nextfile + strsize(nextfile),fileext,strsize(fileext) + 1)

  term.str(nextfile)   'print result on terminal

This uses the stringbuffer in the numbers object, which anyway reserves memory, for the resulting string. nextfile points to this string.
123 is the number to convert, you can also use a variable instead.
nextfile and fileext are long variables

Andy

Heavy

Thanks, That got it. you all been a lot of help