|
398
|
1 /* POSIX compatible FILE stream write function.
|
|
|
2 Copyright (C) 2008-2010 Free Software Foundation, Inc.
|
|
|
3 Written by Bruno Haible <bruno@clisp.org>, 2008.
|
|
|
4
|
|
|
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.
|
|
|
9
|
|
|
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.
|
|
|
14
|
|
|
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/>. */
|
|
|
17
|
|
|
18 #include <config.h>
|
|
|
19
|
|
|
20 /* Specification. */
|
|
|
21 #include <stdio.h>
|
|
|
22
|
|
|
23 /* Replace these functions only if module 'sigpipe' is requested. */
|
|
|
24 #if GNULIB_SIGPIPE
|
|
|
25
|
|
|
26 /* On native Windows platforms, SIGPIPE does not exist. When write() is
|
|
|
27 called on a pipe with no readers, WriteFile() fails with error
|
|
|
28 GetLastError() = ERROR_NO_DATA, and write() in consequence fails with
|
|
|
29 error EINVAL. This write() function is at the basis of the function
|
|
|
30 which flushes the buffer of a FILE stream. */
|
|
|
31
|
|
|
32 # if (defined _WIN32 || defined __WIN32__) && ! defined __CYGWIN__
|
|
|
33
|
|
|
34 # include <errno.h>
|
|
|
35 # include <signal.h>
|
|
|
36 # include <io.h>
|
|
|
37
|
|
|
38 # define WIN32_LEAN_AND_MEAN /* avoid including junk */
|
|
|
39 # include <windows.h>
|
|
|
40
|
|
|
41 # define CALL_WITH_SIGPIPE_EMULATION(RETTYPE, EXPRESSION, FAILED) \
|
|
|
42 if (ferror (stream)) \
|
|
|
43 return (EXPRESSION); \
|
|
|
44 else \
|
|
|
45 { \
|
|
|
46 RETTYPE ret; \
|
|
|
47 SetLastError (0); \
|
|
|
48 ret = (EXPRESSION); \
|
|
|
49 if (FAILED && GetLastError () == ERROR_NO_DATA && ferror (stream)) \
|
|
|
50 { \
|
|
|
51 int fd = fileno (stream); \
|
|
|
52 if (fd >= 0 \
|
|
|
53 && GetFileType ((HANDLE) _get_osfhandle (fd)) == FILE_TYPE_PIPE)\
|
|
|
54 { \
|
|
|
55 /* Try to raise signal SIGPIPE. */ \
|
|
|
56 raise (SIGPIPE); \
|
|
|
57 /* If it is currently blocked or ignored, change errno from \
|
|
|
58 EINVAL to EPIPE. */ \
|
|
|
59 errno = EPIPE; \
|
|
|
60 } \
|
|
|
61 } \
|
|
|
62 return ret; \
|
|
|
63 }
|
|
|
64
|
|
|
65 # if !REPLACE_PRINTF_POSIX /* avoid collision with printf.c */
|
|
|
66 # if !DEPENDS_ON_LIBINTL /* avoid collision with intl/printf.c */
|
|
|
67 int
|
|
|
68 printf (const char *format, ...)
|
|
|
69 {
|
|
|
70 int retval;
|
|
|
71 va_list args;
|
|
|
72
|
|
|
73 va_start (args, format);
|
|
|
74 retval = vfprintf (stdout, format, args);
|
|
|
75 va_end (args);
|
|
|
76
|
|
|
77 return retval;
|
|
|
78 }
|
|
|
79 # endif
|
|
|
80 # endif
|
|
|
81
|
|
|
82 # if !REPLACE_FPRINTF_POSIX /* avoid collision with fprintf.c */
|
|
|
83 int
|
|
|
84 fprintf (FILE *stream, const char *format, ...)
|
|
|
85 {
|
|
|
86 int retval;
|
|
|
87 va_list args;
|
|
|
88
|
|
|
89 va_start (args, format);
|
|
|
90 retval = vfprintf (stream, format, args);
|
|
|
91 va_end (args);
|
|
|
92
|
|
|
93 return retval;
|
|
|
94 }
|
|
|
95 # endif
|
|
|
96
|
|
|
97 # if !REPLACE_VPRINTF_POSIX /* avoid collision with vprintf.c */
|
|
|
98 int
|
|
|
99 vprintf (const char *format, va_list args)
|
|
|
100 {
|
|
|
101 return vfprintf (stdout, format, args);
|
|
|
102 }
|
|
|
103 # endif
|
|
|
104
|
|
|
105 # if !REPLACE_VFPRINTF_POSIX /* avoid collision with vfprintf.c */
|
|
|
106 int
|
|
|
107 vfprintf (FILE *stream, const char *format, va_list args)
|
|
|
108 #undef vfprintf
|
|
|
109 {
|
|
|
110 CALL_WITH_SIGPIPE_EMULATION (int, vfprintf (stream, format, args), ret == EOF)
|
|
|
111 }
|
|
|
112 # endif
|
|
|
113
|
|
|
114 int
|
|
|
115 putchar (int c)
|
|
|
116 {
|
|
|
117 return fputc (c, stdout);
|
|
|
118 }
|
|
|
119
|
|
|
120 int
|
|
|
121 fputc (int c, FILE *stream)
|
|
|
122 #undef fputc
|
|
|
123 {
|
|
|
124 CALL_WITH_SIGPIPE_EMULATION (int, fputc (c, stream), ret == EOF)
|
|
|
125 }
|
|
|
126
|
|
|
127 int
|
|
|
128 fputs (const char *string, FILE *stream)
|
|
|
129 #undef fputs
|
|
|
130 {
|
|
|
131 CALL_WITH_SIGPIPE_EMULATION (int, fputs (string, stream), ret == EOF)
|
|
|
132 }
|
|
|
133
|
|
|
134 int
|
|
|
135 puts (const char *string)
|
|
|
136 #undef puts
|
|
|
137 {
|
|
|
138 FILE *stream = stdout;
|
|
|
139 CALL_WITH_SIGPIPE_EMULATION (int, puts (string), ret == EOF)
|
|
|
140 }
|
|
|
141
|
|
|
142 size_t
|
|
|
143 fwrite (const void *ptr, size_t s, size_t n, FILE *stream)
|
|
|
144 #undef fwrite
|
|
|
145 {
|
|
|
146 CALL_WITH_SIGPIPE_EMULATION (size_t, fwrite (ptr, s, n, stream), ret < n)
|
|
|
147 }
|
|
|
148
|
|
|
149 # endif
|
|
|
150 #endif
|
