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port of mg editor (openbsd to linux)
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commit e2149b5ab7c2aceacc7284c0e11926a42d7cdd53
parent de52e1889c57c55e8d5897a5f32d7a8a535f8ce1
Author: Hiltjo Posthuma <hiltjo@codemadness.org>
Date:   Fri, 28 Nov 2014 16:19:04 +0100

add fgetln for glibc

Diffstat:
Makefile | 4++--
libopenbsd/fgetln.c | 78++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 80 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile @@ -22,6 +22,7 @@ LIBUTILSRC =\ LIBOPENBSD = libopenbsd.a LIBOPENBSDSRC =\ libopenbsd/arc4random.c\ + libopenbsd/fgetln.c\ libopenbsd/reallocarray.c\ libopenbsd/strlcat.c\ libopenbsd/strlcpy.c\ @@ -117,4 +118,4 @@ clean: rm -f $(BIN) $(OBJ) $(LIBUTFOBJ) $(LIBUTIL) $(LIB) mg .PHONY: - all install uninstall clean- \ No newline at end of file + all install uninstall clean diff --git a/libopenbsd/fgetln.c b/libopenbsd/fgetln.c @@ -0,0 +1,78 @@ +/* $NetBSD: fgetln.c,v 1.4 2014/10/31 18:59:32 spz 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 <errno.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + +char * +fgetln(FILE *fp, size_t *len) +{ + static char *buf = NULL; + static size_t bufsiz = 0; + char *ptr, *nbuf; + size_t nbufsiz; + int oerrno; + + if (buf == NULL) { + bufsiz = BUFSIZ; + if ((buf = malloc(bufsiz)) == NULL) + return NULL; + } + + if (fgets(buf, bufsiz, fp) == NULL) + return NULL; + + *len = 0; + while ((ptr = strchr(&buf[*len], '\n')) == NULL) { + nbufsiz = bufsiz + BUFSIZ; + nbuf = realloc(buf, nbufsiz); + + if (nbuf == NULL) { + oerrno = errno; + free(buf); + errno = oerrno; + buf = NULL; + return NULL; + } else + buf = nbuf; + + *len = bufsiz; + if (fgets(&buf[bufsiz], BUFSIZ, fp) == NULL) + return buf; + + bufsiz = nbufsiz; + } + *len = (ptr - buf) + 1; + return buf; +} +