128 lines
3.8 KiB
C
128 lines
3.8 KiB
C
/* error.c
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*
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* $Id$
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*
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* Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
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* Copyright 2002, 2003 Sam Hocevar <sam@zoy.org>, Paris
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*
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* This software was derived from Elk 1.2, which was Copyright 1987, 1988,
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* 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
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* by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
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* between TELES and Nixdorf Microprocessor Engineering, Berlin).
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*
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* Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
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* owners or individual owners of copyright in this software, grant to any
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* person or company a worldwide, royalty free, license to
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*
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* i) copy this software,
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* ii) prepare derivative works based on this software,
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* iii) distribute copies of this software or derivative works,
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* iv) perform this software, or
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* v) display this software,
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*
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* provided that this notice is not removed and that neither Oliver Laumann
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* nor Teles nor Nixdorf are deemed to have made any representations as to
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* the suitability of this software for any purpose nor are held responsible
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* for any defects of this software.
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*
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* THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
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*/
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#include "xlib.h"
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#include <stdlib.h>
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static Object V_X_Error_Handler, V_X_Fatal_Error_Handler;
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/* Default error handlers of the Xlib */
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extern int _XDefaultIOError();
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extern int _XDefaultError();
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static int X_Fatal_Error (Display *d) {
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Object args, fun;
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GC_Node;
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Reset_IO (0);
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args = Make_Display (0, d);
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GC_Link (args);
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args = Cons (args, Null);
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GC_Unlink;
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fun = Var_Get (V_X_Fatal_Error_Handler);
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if (TYPE(fun) == T_Compound)
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(void)Funcall (fun, args, 0);
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_XDefaultIOError (d);
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exit (1); /* In case the default handler doesn't exit() */
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/*NOTREACHED*/
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return 0;
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}
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static int X_Error (Display *d, XErrorEvent *ep) {
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Object args, a, fun;
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GC_Node;
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Reset_IO (0);
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args = Make_Unsigned_Long ((unsigned long)ep->resourceid);
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GC_Link (args);
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args = Cons (args, Null);
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a = Make_Unsigned (ep->minor_code);
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args = Cons (a, args);
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a = Make_Unsigned (ep->request_code);
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args = Cons (a, args);
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a = Bits_To_Symbols ((unsigned long)ep->error_code, 0, Error_Syms);
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if (Nullp (a))
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a = Make_Unsigned (ep->error_code);
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args = Cons (a, args);
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a = Make_Unsigned_Long (ep->serial);
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args = Cons (a, args);
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a = Make_Display (0, ep->display);
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args = Cons (a, args);
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GC_Unlink;
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fun = Var_Get (V_X_Error_Handler);
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if (TYPE(fun) == T_Compound)
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(void)Funcall (fun, args, 0);
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else
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_XDefaultError (d, ep);
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return 0;
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}
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static int X_After_Function (Display *d) {
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Object args;
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GC_Node;
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args = Make_Display (0, d);
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GC_Link (args);
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args = Cons (args, Null);
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GC_Unlink;
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(void)Funcall (DISPLAY(Car (args))->after, args, 0);
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return 0;
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}
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static Object P_Set_After_Function (Object d, Object f) {
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Object old;
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Check_Type (d, T_Display);
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if (EQ(f, False)) {
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(void)XSetAfterFunction (DISPLAY(d)->dpy, (int (*)())0);
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} else {
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Check_Procedure (f);
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(void)XSetAfterFunction (DISPLAY(d)->dpy, X_After_Function);
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}
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old = DISPLAY(d)->after;
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DISPLAY(d)->after = f;
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return old;
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}
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static Object P_After_Function (Object d) {
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Check_Type (d, T_Display);
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return DISPLAY(d)->after;
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}
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void elk_init_xlib_error () {
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Define_Variable (&V_X_Fatal_Error_Handler, "x-fatal-error-handler", Null);
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Define_Variable (&V_X_Error_Handler, "x-error-handler", Null);
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(void)XSetIOErrorHandler (X_Fatal_Error);
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(void)XSetErrorHandler (X_Error);
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Define_Primitive (P_Set_After_Function, "set-after-function!", 2, 2, EVAL);
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Define_Primitive (P_After_Function, "after-function", 1, 1, EVAL);
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}
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