mirror of
https://git.code.sf.net/p/fuse-emulator/fuse
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134 lines
3.4 KiB
C
134 lines
3.4 KiB
C
/* ui.c: User interface routines, but those which are independent of any UI
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Copyright (c) 2002 Philip Kendall
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$Id$
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Author contact information:
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E-mail: pak21-fuse@srcf.ucam.org
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Postal address: 15 Crescent Road, Wokingham, Berks, RG40 2DB, England
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*/
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#include <config.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <libspectrum.h>
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#include "fuse.h"
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#include "ui/ui.h"
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#define MESSAGE_MAX_LENGTH 256
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static char last_message[ MESSAGE_MAX_LENGTH ] = "";
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static size_t frames_since_last_message = 0;
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static int
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print_error_to_stderr( ui_error_level severity, const char *message );
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int
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ui_error( ui_error_level severity, const char *format, ... )
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{
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int error;
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va_list ap;
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va_start( ap, format );
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error = ui_verror( severity, format, ap );
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va_end( ap );
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return error;
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}
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int
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ui_verror( ui_error_level severity, const char *format, va_list ap )
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{
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char message[ MESSAGE_MAX_LENGTH ];
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vsnprintf( message, MESSAGE_MAX_LENGTH, format, ap );
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/* Skip the message if the same message was displayed recently */
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if( frames_since_last_message < 50 && !strcmp( message, last_message ) ) {
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frames_since_last_message = 0;
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return 0;
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}
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/* And store the 'last message' */
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strncpy( last_message, message, MESSAGE_MAX_LENGTH );
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#ifndef UI_WIN32
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print_error_to_stderr( severity, message );
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#endif /* #ifndef UI_WIN32 */
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/* Do any UI-specific bits as well */
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ui_error_specific( severity, message );
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return 0;
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}
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static int
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print_error_to_stderr( ui_error_level severity, const char *message )
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{
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/* Print the error to stderr if it's more significant than just
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informational */
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if( severity > UI_ERROR_INFO ) {
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/* For the fb and svgalib UIs, we don't want to write to stderr if
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it's a terminal, as it's then likely to be what we're currently
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using for graphics output, and writing text to it isn't a good
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idea. Things are OK if we're exiting though */
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#if defined( UI_FB ) || defined( UI_SVGA )
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if( isatty( STDERR_FILENO ) && !fuse_exiting ) return 1;
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#endif /* #if defined( UI_FB ) || defined( UI_SVGA ) */
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fprintf( stderr, "%s: ", fuse_progname );
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switch( severity ) {
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case UI_ERROR_INFO: break; /* Shouldn't happen */
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case UI_ERROR_WARNING: fprintf( stderr, "warning: " ); break;
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case UI_ERROR_ERROR: fprintf( stderr, "error: " ); break;
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}
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fprintf( stderr, "%s\n", message );
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}
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return 0;
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}
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libspectrum_error
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ui_libspectrum_error( libspectrum_error error GCC_UNUSED, const char *format,
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va_list ap )
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{
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char new_format[ 257 ];
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snprintf( new_format, 256, "libspectrum: %s", format );
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ui_verror( UI_ERROR_ERROR, new_format, ap );
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return LIBSPECTRUM_ERROR_NONE;
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}
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void
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ui_error_frame( void )
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{
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frames_since_last_message++;
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}
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