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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 7414 | siemargl | 1 | /* $NetBSD: fgetln.c,v 1.9 2008/04/29 06:53:03 martin Exp $ */ |
| 2 | |||
| 3 | /*- |
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| 4 | * Copyright (c) 2011 The NetBSD Foundation, Inc. |
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| 5 | * All rights reserved. |
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| 6 | * |
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| 7 | * This code is derived from software contributed to The NetBSD Foundation |
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| 8 | * by Christos Zoulas. |
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| 9 | * |
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| 10 | * Redistribution and use in source and binary forms, with or without |
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| 11 | * modification, are permitted provided that the following conditions |
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| 12 | * are met: |
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| 13 | * 1. Redistributions of source code must retain the above copyright |
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| 14 | * notice, this list of conditions and the following disclaimer. |
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| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
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| 16 | * notice, this list of conditions and the following disclaimer in the |
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| 17 | * documentation and/or other materials provided with the distribution. |
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| 18 | * |
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| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
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| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
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| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
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| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
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| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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| 29 | * POSSIBILITY OF SUCH DAMAGE. |
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| 30 | */ |
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| 31 | |||
| 32 | ///#include "file.h" |
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| 33 | #if !HAVE_GETLINE |
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| 34 | #include |
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| 35 | #include |
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| 36 | ///#include |
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| 37 | #include |
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| 38 | #include |
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| 39 | |||
| 40 | typedef int ssize_t; |
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| 41 | |||
| 42 | |||
| 43 | ssize_t |
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| 44 | getdelim(char **buf, size_t *bufsiz, int delimiter, FILE *fp) |
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| 45 | { |
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| 46 | char *ptr, *eptr; |
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| 47 | |||
| 48 | |||
| 49 | if (*buf == NULL || *bufsiz == 0) { |
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| 50 | *bufsiz = BUFSIZ; |
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| 51 | if ((*buf = malloc(*bufsiz)) == NULL) |
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| 52 | return -1; |
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| 53 | } |
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| 54 | |||
| 55 | for (ptr = *buf, eptr = *buf + *bufsiz;;) { |
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| 56 | int c = fgetc(fp); |
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| 57 | if (c == -1) { |
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| 58 | if (feof(fp)) |
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| 59 | return ptr == *buf ? -1 : ptr - *buf; |
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| 60 | else |
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| 61 | return -1; |
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| 62 | } |
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| 63 | *ptr++ = c; |
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| 64 | if (c == delimiter) { |
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| 65 | *ptr = '\0'; |
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| 66 | return ptr - *buf; |
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| 67 | } |
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| 68 | if (ptr + 2 >= eptr) { |
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| 69 | char *nbuf; |
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| 70 | size_t nbufsiz = *bufsiz * 2; |
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| 71 | ssize_t d = ptr - *buf; |
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| 72 | if ((nbuf = realloc(*buf, nbufsiz)) == NULL) |
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| 73 | return -1; |
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| 74 | *buf = nbuf; |
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| 75 | *bufsiz = nbufsiz; |
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| 76 | eptr = nbuf + nbufsiz; |
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| 77 | ptr = nbuf + d; |
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| 78 | } |
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| 79 | } |
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| 80 | } |
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| 81 | |||
| 82 | ssize_t |
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| 83 | getline(char **buf, size_t *bufsiz, FILE *fp) |
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| 84 | { |
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| 85 | return getdelim(buf, bufsiz, '\n', fp); |
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| 86 | } |
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| 87 | |||
| 88 | #endif |
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| 89 | |||
| 90 | #ifdef TEST |
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| 91 | int |
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| 92 | main(int argc, char *argv[]) |
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| 93 | { |
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| 94 | char *p = NULL; |
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| 95 | ssize_t len; |
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| 96 | size_t n = 0; |
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| 97 | |||
| 98 | while ((len = getline(&p, &n, stdin)) != -1) |
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| 99 | (void)printf("%zd %s", len, p); |
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| 100 | free(p); |
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| 101 | return 0; |
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| 102 | } |
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| 103 | #endif |