81 lines
2.5 KiB
C
81 lines
2.5 KiB
C
/* extension.c
|
|
*
|
|
* $Id$
|
|
*
|
|
* Copyright 1990, 1991, 1992, 1993, 1994, 1995, Oliver Laumann, Berlin
|
|
* Copyright 2002, 2003 Sam Hocevar <sam@hocevar.net>, Paris
|
|
*
|
|
* This software was derived from Elk 1.2, which was Copyright 1987, 1988,
|
|
* 1989, Nixdorf Computer AG and TELES GmbH, Berlin (Elk 1.2 has been written
|
|
* by Oliver Laumann for TELES Telematic Services, Berlin, in a joint project
|
|
* between TELES and Nixdorf Microprocessor Engineering, Berlin).
|
|
*
|
|
* Oliver Laumann, TELES GmbH, Nixdorf Computer AG and Sam Hocevar, as co-
|
|
* owners or individual owners of copyright in this software, grant to any
|
|
* person or company a worldwide, royalty free, license to
|
|
*
|
|
* i) copy this software,
|
|
* ii) prepare derivative works based on this software,
|
|
* iii) distribute copies of this software or derivative works,
|
|
* iv) perform this software, or
|
|
* v) display this software,
|
|
*
|
|
* provided that this notice is not removed and that neither Oliver Laumann
|
|
* nor Teles nor Nixdorf are deemed to have made any representations as to
|
|
* the suitability of this software for any purpose nor are held responsible
|
|
* for any defects of this software.
|
|
*
|
|
* THERE IS ABSOLUTELY NO WARRANTY FOR THIS SOFTWARE.
|
|
*/
|
|
|
|
#include "xlib.h"
|
|
|
|
#include <string.h>
|
|
|
|
static Object P_List_Extensions (Object d) {
|
|
Object ret;
|
|
int n;
|
|
register int i;
|
|
register char **p;
|
|
GC_Node;
|
|
|
|
Check_Type (d, T_Display);
|
|
Disable_Interrupts;
|
|
p = XListExtensions (DISPLAY(d)->dpy, &n);
|
|
Enable_Interrupts;
|
|
ret = Make_Vector (n, Null);
|
|
GC_Link (ret);
|
|
for (i = 0; i < n; i++) {
|
|
Object e;
|
|
|
|
e = Make_String (p[i], strlen (p[i]));
|
|
VECTOR(ret)->data[i] = e;
|
|
}
|
|
GC_Unlink;
|
|
XFreeExtensionList (p);
|
|
return ret;
|
|
}
|
|
|
|
static Object P_Query_Extension (Object d, Object name) {
|
|
int opcode, event, error;
|
|
Object ret, t;
|
|
GC_Node2;
|
|
|
|
Check_Type (d, T_Display);
|
|
if (!XQueryExtension (DISPLAY(d)->dpy, Get_Strsym (name), &opcode,
|
|
&event, &error))
|
|
return False;
|
|
t = ret = P_Make_List (Make_Integer (3), Null);
|
|
GC_Link2 (ret, t);
|
|
Car (t) = (opcode ? Make_Integer (opcode) : False); t = Cdr (t);
|
|
Car (t) = (event ? Make_Integer (event) : False); t = Cdr (t);
|
|
Car (t) = (error ? Make_Integer (error) : False);
|
|
GC_Unlink;
|
|
return ret;
|
|
}
|
|
|
|
void elk_init_xlib_extension () {
|
|
Define_Primitive (P_List_Extensions, "list-extensions", 1, 1, EVAL);
|
|
Define_Primitive (P_Query_Extension, "query-extension", 2, 2, EVAL);
|
|
}
|