2 * This file is part of DisOrder.
3 * Copyright (C) 2004, 2007, 2008 Richard Kettlewell
5 * This program is free software: you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation, either version 3 of the License, or
8 * (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 /** @file lib/inputline.c
30 #include "inputline.h"
32 /** @brief Read a line from @p fp
33 * @param tag Used in error messages
34 * @param fp Stream to read from
35 * @param lp Where to store newly allocated string
36 * @param newline Newline character or @ref CRLF
37 * @return 0 on success, -1 on error or eof.
39 * The newline is not included in the string. If the last line of a
40 * stream does not have a newline then that line is still returned.
42 * If @p newline is @ref CRLF then the line is terminated by CR LF,
43 * not by a single newline character. The CRLF is still not included
44 * in the string in this case.
46 * @p *lp is only set if the return value was 0.
48 int inputline(const char *tag
, FILE *fp
, char **lp
, int newline
) {
53 while((ch
= getc(fp
)),
54 (!ferror(fp
) && !feof(fp
) && ch
!= newline
)) {
55 dynstr_append(&d
, ch
);
56 if(newline
== CRLF
&& d
.nvec
>= 2
57 && d
.vec
[d
.nvec
- 2] == 0x0D && d
.vec
[d
.nvec
- 1] == 0x0A) {
63 error(errno
, "error reading %s", tag
);
67 error(0, "error reading %s: unexpected EOF", tag
);