From f60593cc35270c735479ebfbf14430d828a15d89 Mon Sep 17 00:00:00 2001 From: Ben Gras Date: Fri, 18 Jun 2010 14:02:00 +0000 Subject: [PATCH] libraries: fgetln() from pkgsrc branch. --- lib/libc/other/Makefile.inc | 1 + lib/libc/other/fgetln.c | 81 +++++++++++++++++++++++++++++++++++++ 2 files changed, 82 insertions(+) create mode 100644 lib/libc/other/fgetln.c diff --git a/lib/libc/other/Makefile.inc b/lib/libc/other/Makefile.inc index cc653441c..60a24aa84 100644 --- a/lib/libc/other/Makefile.inc +++ b/lib/libc/other/Makefile.inc @@ -53,6 +53,7 @@ SRCS+= \ flock.c \ fslib.c \ fts.c \ + fgetln.c \ fsversion.c \ getgrent.c \ getlogin.c \ diff --git a/lib/libc/other/fgetln.c b/lib/libc/other/fgetln.c new file mode 100644 index 000000000..8b9415edf --- /dev/null +++ b/lib/libc/other/fgetln.c @@ -0,0 +1,81 @@ +/* $NetBSD: fgetln.c,v 1.5 2008/04/29 05:46:08 martin Exp $ */ + +/*- + * Copyright (c) 1998 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. + */ + +#include +#include +#include + +/* + * XXX: This implementation doesn't quite conform to the specification + * in the man page, in that it only manages one buffer at all, not one + * per stdio stream. Since the previous implementation did the same, + * this won't break anything new. + */ +char * +fgetln(fp, len) + FILE *fp; + size_t *len; +{ + static char *buf = NULL; + static size_t bufsiz = 0; + static size_t buflen = 0; + int c; + + if (buf == NULL) { + bufsiz = BUFSIZ; + if ((buf = malloc(bufsiz)) == NULL) + return NULL; + } + + buflen = 0; + while ((c = fgetc(fp)) != EOF) { + if (buflen >= bufsiz) { + size_t nbufsiz = bufsiz + BUFSIZ; + char *nbuf = realloc(buf, nbufsiz); + + if (nbuf == NULL) { + int oerrno = errno; + free(buf); + errno = oerrno; + buf = NULL; + return NULL; + } + + buf = nbuf; + bufsiz = nbufsiz; + } + buf[buflen++] = c; + if (c == '\n') + break; + } + *len = buflen; + return buflen == 0 ? NULL : buf; +} -- 2.44.0