1 #include "config.h" 2 3 #if HAVE_GETLINE 4 5 int dummy; 6 7 #else 8 9 /* $Id: compat_getline.c,v 1.1 2015/11/07 20:52:52 schwarze Exp $ */ 10 /* 11 * Copyright (c) 2015 Ingo Schwarze <schwarze@openbsd.org> 12 * 13 * Permission to use, copy, modify, and distribute this software for any 14 * purpose with or without fee is hereby granted, provided that the above 15 * copyright notice and this permission notice appear in all copies. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 18 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 20 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 21 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 22 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 23 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 24 */ 25 26 #include <sys/types.h> 27 #include <errno.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 31 ssize_t 32 getline(char **buf, size_t *bufsz, FILE *fp) 33 { 34 char *nbuf; 35 size_t nbufsz, pos; 36 int c; 37 38 if (buf == NULL || bufsz == NULL) { 39 errno = EINVAL; 40 return -1; 41 } 42 43 if (*buf == NULL) 44 *bufsz = 0; 45 else 46 **buf = '\0'; 47 48 pos = 0; 49 for (;;) { 50 if (pos + 1 >= *bufsz) { 51 nbufsz = *bufsz ? *bufsz * 2 : BUFSIZ; 52 if ((nbuf = realloc(*buf, nbufsz)) == NULL) 53 return -1; 54 *buf = nbuf; 55 *bufsz = nbufsz; 56 } 57 if ((c = fgetc(fp)) == EOF) { 58 (*buf)[pos] = '\0'; 59 return pos > 0 && feof(fp) ? (ssize_t)pos : -1; 60 } 61 (*buf)[pos++] = c; 62 (*buf)[pos] = '\0'; 63 if (c == '\n') 64 return pos; 65 } 66 } 67 68 #endif 69