fgetfield

Calc Software Package for Number Calc

NAME
    fgetfield - read the next word from a file

SYNOPSIS
    fgetfield(fs)

TYPES
    fs		file stream open for reading

    return	string or null

DESCRIPTION

    Starting at the current file position, any whitespace
    characters are skipped.  If the reading reaches end-of-file, the
    null value is returned.  Otherwise the function returns the empty
    string "" if the first non-white character is '\0', and in other cases,
    the string formed by the non-white-space characters read until '\0' or
    a white-space character or te end of the file is reached.  In the
    cases where the reading is stopped by '\0' or white-space character,
    the file position will be that immediately after that character.

EXAMPLE

    ; f = fopen("/tmp/junk", "w")
    ; fputs(f, " Alpha Beta \n")
    ; freopen(f, "r")
    ; fgetfield(f)
	"Alpha"
    ; fgetfield(f)
	"Beta"
    ; fgetfield(f)

    ; freopen(f, "w")
    ; fputstr(f, " Alpha  ", "Beta")
    ; freopen(f, "r")
    ; fgetfield(f)
	"Alpha"
    ; fgetfield(f)
	""
    ; fgetfield(f)
	"Beta"

LIMITS
    none

LINK LIBRARY
    none

SEE ALSO
    fgetstr, fputstr, fgets, fputs, fopen, files, fprintf

## Copyright (C) 1999-2006  Landon Curt Noll
##
## Calc is open software; you can redistribute it and/or modify it under
## the terms of the version 2.1 of the GNU Lesser General Public License
## as published by the Free Software Foundation.
##
## Calc is distributed in the hope that it will be useful, but WITHOUT
## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
## or FITNESS FOR A PARTICULAR PURPOSE.	 See the GNU Lesser General
## Public License for more details.
##
## A copy of version 2.1 of the GNU Lesser General Public License is
## distributed with calc under the filename COPYING-LGPL.  You should have
## received a copy with calc; if not, write to Free Software Foundation, Inc.
## 59 Temple Place, Suite 330, Boston, MA  02111-1307, USA.
##
## @(#) $Revision: 29.6 $
## @(#) $Id: fgetfield,v 29.6 2006/08/20 15:01:57 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/fgetfield,v $
##
## Under source code control:	1996/04/30 03:05:17
## File existed as early as:	1996
##
## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/