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comparison lib/stdio-write.c @ 398:7987ee447833 3.0-beta1

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Added generated files for release
author lost@l-w.ca
date Fri, 23 Jul 2010 17:18:52 -0600
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397:09fe7c40a082 398:7987ee447833
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