1.1 --- a/src/wsys.c	Fri May 13 09:44:21 2011 +0300
     1.2 +++ b/src/wsys.c	Sat May 14 08:26:10 2011 +0300
     1.3 @@ -1,11 +1,13 @@
     1.4  #include <stdio.h>
     1.5 +#include <stdlib.h>
     1.6 +#include <string.h>
     1.7  #include "wsys.h"
     1.8  
     1.9  static struct wsys_module *merge(struct wsys_module *list1, struct wsys_module *list2);
    1.10  static struct wsys_module *msort(struct wsys_module *list, int count);
    1.11  
    1.12  
    1.13 -struct wsys_module *wslist;
    1.14 +struct wsys_module *wslist, *sel;
    1.15  int wscount;
    1.16  
    1.17  int sgl_register_module(struct wsys_module *ws)
    1.18 @@ -21,9 +23,38 @@
    1.19  	wslist = msort(wslist, wscount);
    1.20  }
    1.21  
    1.22 +void sgl_print_modules(void)
    1.23 +{
    1.24 +	struct wsys_module *ws = wslist;
    1.25 +
    1.26 +	printf("window system modules:\n");
    1.27 +	while(ws) {
    1.28 +		printf("- %s\n", ws->name);
    1.29 +		ws = ws->next;
    1.30 +	}
    1.31 +}
    1.32 +
    1.33  struct wsys_module *sgl_wsys_module(void)
    1.34  {
    1.35 -	return wslist;
    1.36 +	if(!sel) {
    1.37 +		char *modname;
    1.38 +		if((modname = getenv("SGL_MODULE"))) {
    1.39 +			struct wsys_module *ws = wslist;
    1.40 +			while(ws) {
    1.41 +				if(strcmp(ws->name, modname) == 0) {
    1.42 +					sel = ws;
    1.43 +					break;
    1.44 +				}
    1.45 +				ws = ws->next;
    1.46 +			}
    1.47 +			if(!sel) {
    1.48 +				sel = wslist;
    1.49 +			}
    1.50 +		} else {
    1.51 +			sel = wslist;
    1.52 +		}
    1.53 +	}
    1.54 +	return sel;
    1.55  }
    1.56  
    1.57  #define APPEND(node) \