fgetline

Calc Software Package for Number Calc

NAME
    fgetline - read the next line from a file, newline is tossed

SYNOPSIS
    fgetline(fd)

TYPES
    fd		file

    return	str or nil

DESCRIPTION
    This function reads the next line, including any trailing newline from
    the open file associated with fd.  Unlike fgets, the trailing
    newline is removed from the return string.

    Empty lines return the null string.	 When the end of file is reached,
    fgetline returns the null value.  (Note the distinction between a null
    string and a null value.)

    If the line contained a numeric value, then the 'eval' function can
    then be used to convert the string to a numeric value.

    If a line is read, is returned minus the trailing newline, otherwise
    (EOF or ERROR) nil is returned.

EXAMPLE
    ; fd = fopen("/tmp/newfile", "w")
    ; fputs(fd, "chongo was here\n")
    ; fputs(fd, "123\n")
    ; fd2 = fopen("/tmp/newfile", "r")
    ; fgets(fd2)
	    "chongo was here
    "

    ; fclose(fd2)
    ; fd2 = fopen("/tmp/newfile", "r")
    ; fgetline(fd2)
	    "chongo was here"
    ; eval(fgetline(fd2))
	    123

LIMITS
    fd must be associated with an open file

LINK LIBRARY
    none

SEE ALSO
    errno, fclose, feof, ferror, fflush, fgetc, fgetline, fgets, files, fopen,
    fprintf, fputc, fputs, fseek, fsize, ftell, isfile, printf, prompt

## Copyright (C) 1999  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: 29.3 $
## @(#) $Id: fgetline,v 29.3 2006/05/07 07:25:46 chongo Exp $
## @(#) $Source: /usr/local/src/cmd/calc/help/RCS/fgetline,v $
##
## Under source code control:	1995/03/04 11:33:19
## File existed as early as:	1995
##
## chongo <was here> /\oo/\	http://www.isthe.com/chongo/
## Share and enjoy!  :-)	http://www.isthe.com/chongo/tech/comp/calc/