Annotation of mandoc/compat_getline.c, Revision 1.1
1.1 ! schwarze 1: #include "config.h"
! 2:
! 3: #if HAVE_GETLINE
! 4:
! 5: int dummy;
! 6:
! 7: #else
! 8:
! 9: /* $Id$ */
! 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
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