69 lines
1.6 KiB
C
69 lines
1.6 KiB
C
#include "config.h"
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#if HAVE_GETLINE
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int dummy;
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#else
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/* $Id: compat_getline.c,v 1.1 2015/11/07 20:52:52 schwarze Exp $ */
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/*
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* Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <sys/types.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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ssize_t
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getline(char **buf, size_t *bufsz, FILE *fp)
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{
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char *nbuf;
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size_t nbufsz, pos;
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int c;
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if (buf == NULL || bufsz == NULL) {
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errno = EINVAL;
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return -1;
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}
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if (*buf == NULL)
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*bufsz = 0;
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else
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**buf = '\0';
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pos = 0;
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for (;;) {
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if (pos + 1 >= *bufsz) {
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nbufsz = *bufsz ? *bufsz * 2 : BUFSIZ;
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if ((nbuf = realloc(*buf, nbufsz)) == NULL)
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return -1;
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*buf = nbuf;
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*bufsz = nbufsz;
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}
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if ((c = fgetc(fp)) == EOF) {
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(*buf)[pos] = '\0';
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return pos > 0 && feof(fp) ? (ssize_t)pos : -1;
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}
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(*buf)[pos++] = c;
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(*buf)[pos] = '\0';
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if (c == '\n')
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return pos;
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}
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}
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#endif
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