sprint(), format parameter via variable

[rolox]

Hello,
how can i pass a formatstring to sprintf() via a variable ?

it only seems to work with constant formatstrings :

[Ttelmah]

The CCS sprintf/printf, does not support this.

The reason is simple. They only load the code components required, not everything. As soon as you switch to a 'variable' for the functions, they get bulkier, having to load all the parts....

However if you must use a variable, then the open source sprintf, translates quite easily:

<http://www.opensource.apple.com/source/ruby/ruby-67.6/ruby/sprintf.c>

and the small sprintf, is even easier (remember you need 'PASS_STRINGS=IN_RAM', and look at Mark's sscanf implementation in the code library for how to handle variable length arguments):

<http://www.menie.org/georges/embedded/printf.html>

I've used versions of both, but for customers, so I can't post them.

[rolox]

Hello, thx for quick reply ....just had a look at both versions, the second one is tiny - but as far as ic acn see, they do not support the CCS format type "%n.mw" , f.w "%5.1w" which would be the one i'd used most, in some variations like "%5.0w", "%5.1w", "%5.2w".
But even if this is the same Type of format, it will not be possible to change it during runtime - probably the solution is "diy" ;-)

[Ttelmah]

Or just add the w format to the code. There is nothing terribly 'magic' about it.

Remember that you could sprintf to a string, without any decimal point, and then just use the string functions to add this at the location you require.

[rolox]

you're absolutely right. I'm pretty new to CCS and try to use as much existing as possible - the difficulty is often to find the right time to stop searching and switch to writing it yourself :-)
Thanks a lot for pointing out the possibilities ! I'll have some time now ...it's heavily snowing here , preventing me from moving in front of the door ....