1 /*
2 * libdpkg - Debian packaging suite library routines
3 * utils.c - helper functions for dpkg
4 *
5 * Copyright © 1995, 2008 Ian Jackson <ijackson@chiark.greenend.org.uk>
6 *
7 * This is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <https://www.gnu.org/licenses/>.
19 */
20
21 #include <config.h>
22 #include <compat.h>
23
24 #include <string.h>
25
26 #include <dpkg/i18n.h>
27 #include <dpkg/dpkg.h>
28
29 int
fgets_checked(char * buf,size_t bufsz,FILE * f,const char * fn)30 fgets_checked(char *buf, size_t bufsz, FILE *f, const char *fn)
31 {
32 int l;
33
34 if (!fgets(buf, bufsz, f)) {
35 if (ferror(f))
36 ohshite(_("read error in '%.250s'"), fn);
37 return -1;
38 }
39 l = strlen(buf);
40 if (l == 0)
41 ohshit(_("fgets gave an empty string from '%.250s'"), fn);
42 if (buf[--l] != '\n')
43 ohshit(_("too-long line or missing newline in '%.250s'"), fn);
44 buf[l] = '\0';
45
46 return l;
47 }
48
49 int
fgets_must(char * buf,size_t bufsz,FILE * f,const char * fn)50 fgets_must(char *buf, size_t bufsz, FILE *f, const char *fn)
51 {
52 int l = fgets_checked(buf, bufsz, f, fn);
53
54 if (l < 0)
55 ohshit(_("unexpected end of file reading '%.250s'"), fn);
56
57 return l;
58 }
59