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Groups > comp.lang.c > #9806

Re: Function to determine the number of chars in a FILE buffer

Cross-posted to 3 groups.

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On 2011-09-01, tm <thomas.mertes@gmx.at> wrote:

> Without fbufsize() even setting a file to no buffering with
> setvbuf() will probably not lead to a solution: An ungetc() may
> have happened and there is no way to find out if the next char
> read with getc() will be the one provided with ungetc(). Since
> a getc() after an ungetc() will not block inputReady() should
> return 1 in this case.

basically you can't do non blockin IO using the stdio library
in a way that's likely to continue to work.

try somethine else (eg: glib )

http://developer.gnome.org/glib/stable/glib-IO-Channels.html


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Function to determine the number of chars in a FILE buffer tm <thomas.mertes@gmx.at> - 2011-08-31 15:43 -0700
  Re: Function to determine the number of chars in a FILE buffer James Kuyper <jameskuyper@verizon.net> - 2011-08-31 18:56 -0400
    Re: Function to determine the number of chars in a FILE buffer Angel <angel+news@spamcop.net> - 2011-09-01 06:25 +0000
      Re: Function to determine the number of chars in a FILE buffer tm <thomas.mertes@gmx.at> - 2011-09-01 00:23 -0700
        Re: Function to determine the number of chars in a FILE buffer Robert Wessel <robertwessel2@yahoo.com> - 2011-09-01 03:27 -0500
        Re: Function to determine the number of chars in a FILE buffer James Kuyper <jameskuyper@verizon.net> - 2011-09-01 06:58 -0400
          Re: Function to determine the number of chars in a FILE buffer Keith Thompson <kst-u@mib.org> - 2011-09-01 08:29 -0700
        Re: Function to determine the number of chars in a FILE buffer Kenneth Brody <kenbrody@spamcop.net> - 2011-09-01 14:37 -0400
        Re: Function to determine the number of chars in a FILE buffer gordonb.nfrza@burditt.org (Gordon Burditt) - 2011-09-02 21:58 -0500
    Re: Function to determine the number of chars in a FILE buffer tm <thomas.mertes@gmx.at> - 2011-08-31 23:54 -0700
      Re: Function to determine the number of chars in a FILE buffer Jasen Betts <jasen@xnet.co.nz> - 2011-09-01 11:02 +0000
        Re: Function to determine the number of chars in a FILE buffer tm <thomas.mertes@gmx.at> - 2011-09-01 05:44 -0700
      Re: Function to determine the number of chars in a FILE buffer David Schwartz <davids@webmaster.com> - 2011-09-01 04:41 -0700
  Re: Function to determine the number of chars in a FILE buffer Ike Naar <ike@iceland.freeshell.org> - 2011-09-01 04:37 +0000
  Re: Function to determine the number of chars in a FILE buffer Mark Storkamp <mstorkamp@yahoo.com> - 2011-09-01 08:23 -0500

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