From fa5845db13c5cc87a03062fedf5d9cc237d14604 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 19 Apr 2024 05:34:38 +0200 Subject: Adding upstream version 3.3a. Signed-off-by: Daniel Baumann --- compat/fgetln.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 compat/fgetln.c (limited to 'compat/fgetln.c') diff --git a/compat/fgetln.c b/compat/fgetln.c new file mode 100644 index 0000000..c71918c --- /dev/null +++ b/compat/fgetln.c @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2015 Joerg Jung + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * portable fgetln() version, NOT reentrant + */ + +#include +#include +#include + +#include "compat.h" + +char * +fgetln(FILE *fp, size_t *len) +{ + static char *buf = NULL; + static size_t bufsz = 0; + size_t r = 0; + char *p; + int c, e; + + if (!fp || !len) { + errno = EINVAL; + return NULL; + } + if (!buf) { + if (!(buf = calloc(1, BUFSIZ))) + return NULL; + bufsz = BUFSIZ; + } + while ((c = getc(fp)) != EOF) { + buf[r++] = c; + if (r == bufsz) { + if (!(p = reallocarray(buf, 2, bufsz))) { + e = errno; + free(buf); + errno = e; + buf = NULL, bufsz = 0; + return NULL; + } + buf = p, bufsz = 2 * bufsz; + } + if (c == '\n') + break; + } + return (*len = r) ? buf : NULL; +} -- cgit v1.2.3