78 lines
2.4 KiB
C
78 lines
2.4 KiB
C
/* $NetBSD: fgetln.c,v 1.2 2002/01/21 20:04:37 tv Exp $ */
|
|
|
|
/*
|
|
* Copyright 1999 Luke Mewburn <lukem@netbsd.org>.
|
|
* All rights reserved.
|
|
*
|
|
* 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.
|
|
* 3. The name of the author may not be used to endorse or promote products
|
|
* derived from this software without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
#ifndef HAVE_FGETLN
|
|
#include <stdlib.h>
|
|
|
|
#define BUFCHUNKS BUFSIZ
|
|
|
|
char *
|
|
fgetln(FILE *fp, size_t *len)
|
|
{
|
|
static char *buf;
|
|
static size_t bufsize;
|
|
size_t buflen;
|
|
char curbuf[BUFCHUNKS];
|
|
char *p;
|
|
|
|
if (buf == NULL) {
|
|
bufsize = BUFCHUNKS;
|
|
buf = (char *)malloc(bufsize);
|
|
if (buf == NULL)
|
|
err(1, "Unable to allocate buffer for fgetln()");
|
|
}
|
|
|
|
*buf = '\0';
|
|
buflen = 0;
|
|
while ((p = fgets(curbuf, sizeof(curbuf), fp)) != NULL) {
|
|
size_t l;
|
|
|
|
l = strlen(p);
|
|
if (bufsize < buflen + l) {
|
|
bufsize += BUFCHUNKS;
|
|
if ((buf = (char *)realloc(buf, bufsize)) == NULL)
|
|
err(1, "Unable to allocate %ld bytes of memory",
|
|
(long)bufsize);
|
|
}
|
|
strcpy(buf + buflen, p);
|
|
buflen += l;
|
|
if (p[l - 1] == '\n')
|
|
break;
|
|
}
|
|
if (p == NULL && *buf == '\0')
|
|
return (NULL);
|
|
*len = strlen(buf);
|
|
return (buf);
|
|
}
|
|
#endif /* HAVE_FGETLN */
|