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Detect some failures when write to stdout fails.

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This commit is contained in:
Giuseppe Scrivano 2011-08-27 11:19:24 +02:00
parent 5bcd75d32f
commit a024990e18
2 changed files with 71 additions and 37 deletions
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7
src/ChangeLog
View File

@ -1,3 +1,10 @@
2011-08-27 Giuseppe Scrivano <gscrivano@gnu.org>
* main.c (print_help): Exit with an error status if print to stdout
fails.
(print_usage): Change method signature and return a status code.
(print_version): Likewise.
2011-08-26 Giuseppe Scrivano <gscrivano@gnu.org>
* gnutls.c: Include "ptimer.h".

101
src/main.c
View File

@ -393,11 +393,11 @@ init_switches (void)
}
/* Print the usage message. */
static void
static int
print_usage (int error)
{
fprintf (error ? stderr : stdout, _("Usage: %s [OPTION]... [URL]...\n"),
exec_name);
return fprintf (error ? stderr : stdout,
_("Usage: %s [OPTION]... [URL]...\n"), exec_name);
}
/* Print the help message, describing all the available options. If
@ -709,12 +709,15 @@ Recursive accept/reject:\n"),
size_t i;
printf (_("GNU Wget %s, a non-interactive network retriever.\n"),
version_string);
print_usage (0);
if (printf (_("GNU Wget %s, a non-interactive network retriever.\n"),
version_string))
exit (3);
if (print_usage (0) < 0)
exit (3);
for (i = 0; i < countof (help); i++)
fputs (_(help[i]), stdout);
if (fputs (_(help[i]), stdout) < 0)
exit (3);
exit (0);
}
@ -759,7 +762,7 @@ prompt_for_password (void)
to at most line_length. prefix is printed on the first line
and an appropriate number of spaces are added on subsequent
lines.*/
static void
static int
format_and_print_line (const char *prefix, const char *line,
int line_length)
{
@ -774,7 +777,8 @@ format_and_print_line (const char *prefix, const char *line,
if (line_length <= 0)
line_length = MAX_CHARS_PER_LINE - TABULATION;
printf ("%s", prefix);
if (printf ("%s", prefix) < 0)
return -1;
remaining_chars = line_length;
/* We break on spaces. */
token = strtok (line_dup, " ");
@ -785,17 +789,21 @@ format_and_print_line (const char *prefix, const char *line,
token on the next line. */
if (remaining_chars <= strlen (token))
{
printf ("\n%*c", TABULATION, ' ');
if (printf ("\n%*c", TABULATION, ' ') < 0)
return -1;
remaining_chars = line_length - TABULATION;
}
printf ("%s ", token);
if (printf ("%s ", token) < 0)
return -1;
remaining_chars -= strlen (token) + 1; /* account for " " */
token = strtok (NULL, " ");
}
printf ("\n");
if (printf ("\n") < 0)
return -1;
xfree (line_dup);
return 0;
}
static void
@ -808,72 +816,91 @@ print_version (void)
char *env_wgetrc, *user_wgetrc;
int i;
printf (_("GNU Wget %s built on %s.\n\n"), version_string, OS_TYPE);
if (printf (_("GNU Wget %s built on %s.\n\n"), version_string, OS_TYPE) < 0)
exit (3);
for (i = 0; compiled_features[i] != NULL; )
{
int line_length = MAX_CHARS_PER_LINE;
while ((line_length > 0) && (compiled_features[i] != NULL))
{
printf ("%s ", compiled_features[i]);
if (printf ("%s ", compiled_features[i]))
exit (3);
line_length -= strlen (compiled_features[i]) + 2;
i++;
}
printf ("\n");
if (printf ("\n") < 0)
exit (3);
}
printf ("\n");
if (printf ("\n") < 0)
exit (3);
/* Handle the case when $WGETRC is unset and $HOME/.wgetrc is
absent. */
printf ("%s\n", wgetrc_title);
if (printf ("%s\n", wgetrc_title) < 0)
exit (3);
env_wgetrc = wgetrc_env_file_name ();
if (env_wgetrc && *env_wgetrc)
{
printf (_(" %s (env)\n"), env_wgetrc);
if (printf (_(" %s (env)\n"), env_wgetrc) < 0)
exit (3);
xfree (env_wgetrc);
}
user_wgetrc = wgetrc_user_file_name ();
if (user_wgetrc)
{
printf (_(" %s (user)\n"), user_wgetrc);
if (printf (_(" %s (user)\n"), user_wgetrc) < 0)
exit (3);
xfree (user_wgetrc);
}
#ifdef SYSTEM_WGETRC
printf (_(" %s (system)\n"), SYSTEM_WGETRC);
if (printf (_(" %s (system)\n"), SYSTEM_WGETRC) < 0)
exit (3);
#endif
#ifdef ENABLE_NLS
format_and_print_line (locale_title,
if (format_and_print_line (locale_title,
LOCALEDIR,
MAX_CHARS_PER_LINE);
MAX_CHARS_PER_LINE) < 0)
exit (3);
#endif /* def ENABLE_NLS */
if (compilation_string != NULL)
format_and_print_line (compile_title,
compilation_string,
MAX_CHARS_PER_LINE);
if (format_and_print_line (compile_title,
compilation_string,
MAX_CHARS_PER_LINE) < 0)
exit (3);
if (link_string != NULL)
format_and_print_line (link_title,
link_string,
MAX_CHARS_PER_LINE);
if (format_and_print_line (link_title,
link_string,
MAX_CHARS_PER_LINE) < 0)
exit (3);
if (printf ("\n") < 0)
exit (3);
printf ("\n");
/* TRANSLATORS: When available, an actual copyright character
(cirle-c) should be used in preference to "(C)". */
fputs (_("\
Copyright (C) 2009 Free Software Foundation, Inc.\n"), stdout);
fputs (_("\
if (fputs (_("\
Copyright (C) 2009 Free Software Foundation, Inc.\n"), stdout) < 0)
exit (3);
if (fputs (_("\
License GPLv3+: GNU GPL version 3 or later\n\
<http://www.gnu.org/licenses/gpl.html>.\n\
This is free software: you are free to change and redistribute it.\n\
There is NO WARRANTY, to the extent permitted by law.\n"), stdout);
There is NO WARRANTY, to the extent permitted by law.\n"), stdout) < 0)
exit (3);
/* TRANSLATORS: When available, please use the proper diacritics for
names such as this one. See en_US.po for reference. */
fputs (_("\nOriginally written by Hrvoje Niksic <hniksic@xemacs.org>.\n"),
stdout);
fputs (_("Please send bug reports and questions to <bug-wget@gnu.org>.\n"),
stdout);
if (fputs (_("\nOriginally written by Hrvoje Niksic <hniksic@xemacs.org>.\n"),
stdout) < 0)
exit (3);
if (fputs (_("Please send bug reports and questions to <bug-wget@gnu.org>.\n"),
stdout) < 0)
exit (3);
exit (0);
}