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tools/build/cross-build/fgetln_fallback.c
- This file was added.
| /* | |||||
| * Copyright © 2005 Hector Garcia Alvarez | |||||
| * Copyright © 2005, 2008-2012 Guillem Jover <guillem@hadrons.org> | |||||
| * | |||||
| * 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. | |||||
| * 3. The name of the author may not be used to endorse or promote products | |||||
| * derived from this software without specific prior written permission. | |||||
| * | |||||
| * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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 <stdio.h> | |||||
| #include <sys/cdefs.h> | |||||
| #include <sys/types.h> | |||||
| #include <string.h> | |||||
| #include "local-link.h" | |||||
| #define HAVE_GETLINE 1 | |||||
| #ifdef HAVE_GETLINE | |||||
| struct filebuf { | |||||
| FILE *fp; | |||||
| char *buf; | |||||
| size_t len; | |||||
| }; | |||||
| #define FILEBUF_POOL_ITEMS 32 | |||||
| static struct filebuf fb_pool[FILEBUF_POOL_ITEMS]; | |||||
| static int fb_pool_cur; | |||||
| char * | |||||
| fgetln(FILE *stream, size_t *len) | |||||
| { | |||||
| struct filebuf *fb; | |||||
| ssize_t nread; | |||||
| flockfile(stream); | |||||
| /* Try to diminish the possibility of several fgetln() calls being | |||||
| * used on different streams, by using a pool of buffers per file. */ | |||||
| fb = &fb_pool[fb_pool_cur]; | |||||
| if (fb->fp != stream && fb->fp != NULL) { | |||||
| fb_pool_cur++; | |||||
| fb_pool_cur %= FILEBUF_POOL_ITEMS; | |||||
| fb = &fb_pool[fb_pool_cur]; | |||||
| } | |||||
| fb->fp = stream; | |||||
| nread = getline(&fb->buf, &fb->len, stream); | |||||
| funlockfile(stream); | |||||
| /* Note: the getdelim/getline API ensures nread != 0. */ | |||||
| if (nread == -1) { | |||||
| *len = 0; | |||||
| return NULL; | |||||
| } else { | |||||
| *len = (size_t)nread; | |||||
| return fb->buf; | |||||
| } | |||||
| } | |||||
| libbsd_link_warning(fgetln, | |||||
| "This function cannot be safely ported, use getline(3) " | |||||
| "instead, as it is supported by GNU and POSIX.1-2008.") | |||||
| #else | |||||
| #error "Function fgetln() needs to be ported." | |||||
| #endif | |||||