static void
g_scanner_msg_handler (GScanner *scanner,
gchar *message,
gboolean is_error)
{
g_return_if_fail (scanner != NULL);
_g_fprintf (stderr, "%s:%d: ",
scanner->input_name ? scanner->input_name : "<memory>",
scanner->line);
if (is_error)
_g_fprintf (stderr, "error: ");
_g_fprintf (stderr, "%s\n", message);
}
static gchar*
strdup_convert (const gchar *string,
const gchar *charset)
{
if (!g_utf8_validate (string, -1, NULL))
{
GString *gstring = g_string_new ("[Invalid UTF-8] ");
guchar *p;
for (p = (guchar *)string; *p; p++)
{
if (CHAR_IS_SAFE(*p) &&
!(*p == '\r' && *(p + 1) != '\n') &&
*p < 0x80)
g_string_append_c (gstring, *p);
else
g_string_append_printf (gstring, "\\x%02x", (guint)(guchar)*p);
}
return g_string_free (gstring, FALSE);
}
else
{
GError *err = NULL;
gchar *result = g_convert_with_fallback (string, -1, charset, "UTF-8", "?", NULL, NULL, &err);
if (result)
return result;
else
{
#ifdef USE_LIBICONV_GNU
/* No libiconv in Android, so we only duplicate message if no
* USE_LIBICONV_GNU */
/* Not thread-safe, but doesn't matter if we print the warning twice
*/
static gboolean warned = FALSE;
if (!warned)
{
warned = TRUE;
_g_fprintf (stderr, "GLib: Cannot convert message: %s\n", err->message);
}
g_error_free (err);
#endif
return g_strdup (string);
}
}
}
void
g_on_error_query (const gchar *prg_name)
{
#ifndef G_OS_WIN32
static const gchar *query1 = "[E]xit, [H]alt";
static const gchar *query2 = ", show [S]tack trace";
static const gchar *query3 = " or [P]roceed";
gchar buf[16];
if (!prg_name)
prg_name = g_get_prgname ();
retry:
if (prg_name)
_g_fprintf (stdout,
"%s (pid:%u): %s%s%s: ",
prg_name,
(guint) getpid (),
query1,
query2,
query3);
else
_g_fprintf (stdout,
"(process:%u): %s%s: ",
(guint) getpid (),
query1,
query3);
fflush (stdout);
if (isatty(0) && isatty(1))
fgets (buf, 8, stdin);
else
strcpy (buf, "E\n");
if ((buf[0] == 'E' || buf[0] == 'e')
&& buf[1] == '\n')
_exit (0);
else if ((buf[0] == 'P' || buf[0] == 'p')
&& buf[1] == '\n')
return;
else if (prg_name
&& (buf[0] == 'S' || buf[0] == 's')
&& buf[1] == '\n')
{
g_on_error_stack_trace (prg_name);
goto retry;
}
else if ((buf[0] == 'H' || buf[0] == 'h')
&& buf[1] == '\n')
{
while (glib_on_error_halt)
;
glib_on_error_halt = TRUE;
return;
}
else
goto retry;
#else
if (!prg_name)
prg_name = g_get_prgname ();
MessageBox (NULL, "g_on_error_query called, program terminating",
(prg_name && *prg_name) ? prg_name : NULL,
MB_OK|MB_ICONERROR);
_exit(0);
#endif
}
static void
stack_trace (char **args)
{
pid_t pid;
int in_fd[2];
int out_fd[2];
SELECT_MASK fdset;
SELECT_MASK readset;
struct timeval tv;
int sel, index, state;
char buffer[256];
char c;
stack_trace_done = FALSE;
signal (SIGCHLD, stack_trace_sigchld);
if ((pipe (in_fd) == -1) || (pipe (out_fd) == -1))
{
perror ("unable to open pipe");
_exit (0);
}
pid = fork ();
if (pid == 0)
{
close (0); dup (in_fd[0]); /* set the stdin to the in pipe */
close (1); dup (out_fd[1]); /* set the stdout to the out pipe */
close (2); dup (out_fd[1]); /* set the stderr to the out pipe */
execvp (args[0], args); /* exec gdb */
perror ("exec failed");
_exit (0);
}
else if (pid == (pid_t) -1)
{
perror ("unable to fork");
_exit (0);
}
FD_ZERO (&fdset);
FD_SET (out_fd[0], &fdset);
write (in_fd[1], "backtrace\n", 10);
write (in_fd[1], "p x = 0\n", 8);
write (in_fd[1], "quit\n", 5);
index = 0;
state = 0;
while (1)
{
readset = fdset;
tv.tv_sec = 1;
tv.tv_usec = 0;
sel = select (FD_SETSIZE, &readset, NULL, NULL, &tv);
if (sel == -1)
break;
if ((sel > 0) && (FD_ISSET (out_fd[0], &readset)))
{
if (read (out_fd[0], &c, 1))
{
switch (state)
{
case 0:
if (c == '#')
{
state = 1;
index = 0;
buffer[index++] = c;
}
break;
case 1:
buffer[index++] = c;
if ((c == '\n') || (c == '\r'))
{
buffer[index] = 0;
_g_fprintf (stdout, "%s", buffer);
state = 0;
index = 0;
}
break;
default:
break;
}
}
}
else if (stack_trace_done)
break;
}
close (in_fd[0]);
close (in_fd[1]);
close (out_fd[0]);
close (out_fd[1]);
_exit (0);
}
