1 /* printf wrappers that fail immediately for non-file-related errors
2 Copyright (C) 2007, 2009-2018 Free Software Foundation, Inc.
3
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
8
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
13
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
16
17 #include <config.h>
18
19 #include "xprintf.h"
20
21 #include <errno.h>
22
23 #include "error.h"
24 #include "exitfail.h"
25 #include "gettext.h"
26
27 /* written by Jim Meyering */
28
29 /* Just like printf, but call error if it fails without setting the
30 stream's error indicator. */
31 int
xprintf(char const * restrict format,...)32 xprintf (char const *restrict format, ...)
33 {
34 va_list args;
35 int retval;
36 va_start (args, format);
37 retval = xvprintf (format, args);
38 va_end (args);
39
40 return retval;
41 }
42
43 /* Just like vprintf, but call error if it fails without setting the
44 stream's error indicator. */
45 int
xvprintf(char const * restrict format,va_list args)46 xvprintf (char const *restrict format, va_list args)
47 {
48 int retval = vprintf (format, args);
49 if (retval < 0 && ! ferror (stdout))
50 error (exit_failure, errno, gettext ("cannot perform formatted output"));
51
52 return retval;
53 }
54
55 /* Just like fprintf, but call error if it fails without setting the
56 stream's error indicator. */
57 int
xfprintf(FILE * restrict stream,char const * restrict format,...)58 xfprintf (FILE *restrict stream, char const *restrict format, ...)
59 {
60 va_list args;
61 int retval;
62 va_start (args, format);
63 retval = xvfprintf (stream, format, args);
64 va_end (args);
65
66 return retval;
67 }
68
69 /* Just like vfprintf, but call error if it fails without setting the
70 stream's error indicator. */
71 int
xvfprintf(FILE * restrict stream,char const * restrict format,va_list args)72 xvfprintf (FILE *restrict stream, char const *restrict format, va_list args)
73 {
74 int retval = vfprintf (stream, format, args);
75 if (retval < 0 && ! ferror (stream))
76 error (exit_failure, errno, gettext ("cannot perform formatted output"));
77
78 return retval;
79 }
80