Annotation of mandoc/compat_fgetln.c, Revision 1.1
1.1 ! kristaps 1: #ifdef HAVE_FGETLN
! 2:
! 3: int dummy;
! 4:
! 5: #else
! 6:
! 7: /* $NetBSD: fgetln.c,v 1.3 2006/09/25 07:18:17 lukem Exp $ */
! 8:
! 9: /*-
! 10: * Copyright (c) 1998 The NetBSD Foundation, Inc.
! 11: * All rights reserved.
! 12: *
! 13: * This code is derived from software contributed to The NetBSD Foundation
! 14: * by Christos Zoulas.
! 15: *
! 16: * Redistribution and use in source and binary forms, with or without
! 17: * modification, are permitted provided that the following conditions
! 18: * are met:
! 19: * 1. Redistributions of source code must retain the above copyright
! 20: * notice, this list of conditions and the following disclaimer.
! 21: * 2. Redistributions in binary form must reproduce the above copyright
! 22: * notice, this list of conditions and the following disclaimer in the
! 23: * documentation and/or other materials provided with the distribution.
! 24: * 3. Neither the name of The NetBSD Foundation nor the names of its
! 25: * contributors may be used to endorse or promote products derived
! 26: * from this software without specific prior written permission.
! 27: *
! 28: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
! 29: * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
! 30: * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
! 31: * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
! 32: * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
! 33: * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
! 34: * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
! 35: * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
! 36: * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
! 37: * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
! 38: * POSSIBILITY OF SUCH DAMAGE.
! 39: */
! 40: #include <errno.h>
! 41: #include <stdio.h>
! 42: #include <stdlib.h>
! 43: #include <string.h>
! 44:
! 45: char *
! 46: fgetln(fp, len)
! 47: FILE *fp;
! 48: size_t *len;
! 49: {
! 50: static char *buf = NULL;
! 51: static size_t bufsiz = 0;
! 52: char *ptr;
! 53:
! 54:
! 55: if (buf == NULL) {
! 56: bufsiz = BUFSIZ;
! 57: if ((buf = malloc(bufsiz)) == NULL)
! 58: return NULL;
! 59: }
! 60:
! 61: if (fgets(buf, bufsiz, fp) == NULL)
! 62: return NULL;
! 63:
! 64: *len = 0;
! 65: while ((ptr = strchr(&buf[*len], '\n')) == NULL) {
! 66: size_t nbufsiz = bufsiz + BUFSIZ;
! 67: char *nbuf = realloc(buf, nbufsiz);
! 68:
! 69: if (nbuf == NULL) {
! 70: int oerrno = errno;
! 71: free(buf);
! 72: errno = oerrno;
! 73: buf = NULL;
! 74: return NULL;
! 75: } else
! 76: buf = nbuf;
! 77:
! 78: *len = bufsiz;
! 79: if (fgets(&buf[bufsiz], BUFSIZ, fp) == NULL)
! 80: return buf;
! 81:
! 82: bufsiz = nbufsiz;
! 83: }
! 84:
! 85: *len = (ptr - buf) + 1;
! 86: return buf;
! 87: }
! 88:
! 89: #endif
CVSweb