Subversion Repositories openrisc_2011-10-31

/* Copyright 2002, Red Hat Inc. - all rights reserved */

/*

FUNCTION

<<getline>>---read a line from a file

INDEX

        getline

ANSI_SYNOPSIS

        #include <stdio.h>

        ssize_t getline(char **<[bufptr]>, size_t *<[n]>, FILE *<[fp]>);

TRAD_SYNOPSIS

        #include <stdio.h>

        ssize_t getline(<[bufptr]>, <[n]>, <[fp]>)

        char **<[bufptr]>;

        size_t *<[n]>;

        FILE *<[fp]>;

DESCRIPTION

<<getline>> reads a file <[fp]> up to and possibly including the

newline character.  The line is read into a buffer pointed to

by <[bufptr]> and designated with size *<[n]>.  If the buffer is

not large enough, it will be dynamically grown by <<getdelim>>.

As the buffer is grown, the pointer to the size <[n]> will be

updated.

<<getline>> is equivalent to getdelim(bufptr, n, '\n', fp);

RETURNS

<<getline>> returns <<-1>> if no characters were successfully read,

otherwise, it returns the number of bytes successfully read.

at end of file, the result is nonzero.

PORTABILITY

<<getline>> is a glibc extension.

No supporting OS subroutines are directly required.

*/

#include <_ansi.h>

#include <stdio.h>

extern ssize_t _EXFUN(__getdelim, (char **, size_t *, int, FILE *));

ssize_t

_DEFUN(__getline, (lptr, n, fp),

       char **lptr _AND

       size_t *n   _AND

       FILE *fp)

{

  return __getdelim (lptr, n, '\n', fp);

}