/* lib/fgetln.c - bsd-games implementation of fgetln. * * Copyright (c) 1997, 1998, 1999, 2000, 2004 Joseph Samuel Myers. * All rights reserved. * * 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 BY THE AUTHOR ``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 #include #include #ifndef HAVE_fgetln char * fgetln(FILE *stream, size_t *len) { static char *buf = NULL; static size_t buflen = 0; char *res; char *nbuf; if (buf == NULL) { buf = (char *)malloc(buflen = 1024); if (buf == NULL) { return NULL; } } buf[buflen - 1] = 1; res = fgets(buf, buflen, stream); if (res == NULL) return NULL; while (buf[buflen - 1] == 0 && buf[buflen - 2] != '\n') { /* long line */ nbuf = realloc(buf, buflen * 2); if (nbuf == NULL) return NULL; buf = nbuf; buflen *= 2; buf[buflen - 1] = 1; res = fgets(buf + buflen/2 - 1, buflen/2 + 1, stream); if (res == NULL) return NULL; } *len = strlen(buf); return buf; } #endif /* !defined(HAVE_fgetln) */