Adding the xresources patch

patch/xresources.c

@@ -0,0 +1,74 @@
+void
+resource_load(XrmDatabase db, char *name, enum resource_type rtype, void *dst)
+{
+	char *sdst = NULL;
+	int *idst = NULL;
+	float *fdst = NULL;
+
+	sdst = dst;
+	idst = dst;
+	fdst = dst;
+
+	char fullname[256];
+	char *type;
+	XrmValue ret;
+
+	snprintf(fullname, sizeof(fullname), "%s.%s", "dwm", name);
+	fullname[sizeof(fullname) - 1] = '\0';
+
+	XrmGetResource(db, fullname, "*", &type, &ret);
+	if (!(ret.addr == NULL || strncmp("String", type, 64)))
+	{
+		switch (rtype) {
+		case STRING:
+			strcpy(sdst, ret.addr);
+			break;
+		case INTEGER:
+			*idst = strtoul(ret.addr, NULL, 10);
+			break;
+		case FLOAT:
+			*fdst = strtof(ret.addr, NULL);
+			break;
+		}
+	}
+}
+
+void
+load_xresources(void)
+{
+	Display *display;
+	char *resm;
+	XrmDatabase db;
+	ResourcePref *p;
+
+	display = XOpenDisplay(NULL);
+	resm = XResourceManagerString(display);
+	if (!resm)
+		return;
+
+	db = XrmGetStringDatabase(resm);
+	for (p = resources; p < resources + LENGTH(resources); p++)
+		resource_load(db, p->name, p->type, p->dst);
+	XCloseDisplay(display);
+}
+
+void
+xrdb(const Arg *arg)
+{
+	int i;
+	load_xresources();
+	for (i = 0; i < LENGTH(colors); i++)
+		scheme[i] = drw_scm_create(drw, colors[i],
+		#if BAR_ALPHA_PATCH
+		alphas[i],
+		#endif // BAR_ALPHA_PATCH
+		ColCount
+		);
+	#if BAR_SYSTRAY_PATCH && !BAR_ALPHA_PATCH
+	if (systray) {
+		XMoveWindow(dpy, systray->win, -32000, -32000);
+	}
+	#endif // BAR_SYSTRAY_PATCH
+	arrange(NULL);
+	focus(NULL);
+}