text: ///////////////////////////////////////////////////
  // this license applies until you see another license in this file:
  /*	$NetBSD: fgetln.c,v 1.9 2008/04/29 06:53:03 martin Exp $	*/
  
  /*-
   * Copyright (c) 2011 The NetBSD Foundation, Inc.
   * All rights reserved.
   *
   * This code is derived from software contributed to The NetBSD Foundation
   * by Christos Zoulas.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   *
   * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   */
  
  #if !HAVE_GETLINE
  #include <stdlib.h>
  #include <stdio.h>
  #include <unistd.h>
  #include <errno.h>
  #include <string.h>
  
  ssize_t
  getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp)
  {
  	char *ptr, *eptr;
  
  
  	if (*buf == NULL || *bufsiz == 0) {
  		*bufsiz = BUFSIZ;
  		if ((*buf = malloc(*bufsiz)) == NULL)
  			return -1;
  	}
  
  	for (ptr = *buf, eptr = *buf + *bufsiz;;) {
  		int c = fgetc(fp);
  		if (c == -1) {
  			if (feof(fp))
  				return ptr == *buf ? -1 : ptr - *buf;
  			else
  				return -1;
  		}
  		*ptr++ = c;
  		if (c == delimiter) {
  			*ptr = '\0';
  			return ptr - *buf;
  		}
  		if (ptr + 2 >= eptr) {
  			char *nbuf;
  			size_t nbufsiz = *bufsiz * 2;
  			ssize_t d = ptr - *buf;
  			if ((nbuf = realloc(*buf, nbufsiz)) == NULL)
  				return -1;
  			*buf = nbuf;
  			*bufsiz = nbufsiz;
  			eptr = nbuf + nbufsiz;
  			ptr = nbuf + d;
  		}
  	}
  }
  
  ssize_t
  getline(char **buf, size_t *bufsiz, FILE *fp)
  {
  	return getdelim(buf, bufsiz, '\n', fp);
  }
  #endif
  