Module Name: src Committed By: christos Date: Sun Mar 20 20:48:57 UTC 2011
Added Files: src/tools/compat: getline.c Log Message: add a stdio neutral getline/getdelim implementation. To generate a diff of this commit: cvs rdiff -u -r0 -r1.1 src/tools/compat/getline.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Added files: Index: src/tools/compat/getline.c diff -u /dev/null src/tools/compat/getline.c:1.1 --- /dev/null Sun Mar 20 16:48:57 2011 +++ src/tools/compat/getline.c Sun Mar 20 16:48:57 2011 @@ -0,0 +1,107 @@ +/* $NetBSD: getline.c,v 1.1 2011/03/20 20:48:57 christos 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. + */ + +#ifdef HAVE_NBTOOL_CONFIG_H +#include "nbtool_config.h" +#endif + +#if !HAVE_GETLINE +#include <stdlib.h> + +#ifndef HAVE_NBTOOL_CONFIG_H +/* These headers are required, but included from nbtool_config.h */ +#include <stdio.h> +#include <unistd.h> +#include <errno.h> +#include <string.h> +#endif + +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 + +#ifdef TEST +int +main(int argc, char *argv[]) +{ + char *p = NULL; + ssize_t len; + size_t n = 0; + + while ((len = getline(&p, &n, stdin)) != -1) + (void)printf("%zd %s", len, p); + free(p); + return 0; +} +#endif