xresource

[slock.git] / slock.c

diff --git a/slock.c b/slock.c
index 610929b..f4b9463 100644 (file)
--- a/slock.c
+++ b/slock.c
@@ -6,6 +6,7 @@
 
 #include <ctype.h>
 #include <errno.h>
+#include <math.h>
 #include <grp.h>
 #include <pwd.h>
 #include <stdarg.h>
@@ -19,6 +20,7 @@
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
+#include <X11/Xresource.h>
 
 #include "arg.h"
 #include "util.h"
@@ -48,6 +50,19 @@ struct xrandr {
        int errbase;
 };
 
+/* Xresources preferences */
+enum resource_type {
+       STRING = 0,
+       INTEGER = 1,
+       FLOAT = 2
+};
+
+typedef struct {
+       char *name;
+       enum resource_type type;
+       void *dst;
+} ResourcePref;
+
 #include "config.h"
 
 static void
@@ -394,6 +409,57 @@ lockscreen(Display *dpy, struct xrandr *rr, int screen)
        return NULL;
 }
 
+int
+resource_load(XrmDatabase db, char *name, enum resource_type rtype, void *dst)
+{
+       char **sdst = dst;
+       int *idst = dst;
+       float *fdst = dst;
+
+       char fullname[256];
+       char fullclass[256];
+       char *type;
+       XrmValue ret;
+
+       snprintf(fullname, sizeof(fullname), "%s.%s", "slock", name);
+       snprintf(fullclass, sizeof(fullclass), "%s.%s", "Slock", name);
+       fullname[sizeof(fullname) - 1] = fullclass[sizeof(fullclass) - 1] = '\0';
+
+       XrmGetResource(db, fullname, fullclass, &type, &ret);
+       if (ret.addr == NULL || strncmp("String", type, 64))
+               return 1;
+
+       switch (rtype) {
+       case STRING:
+               *sdst = ret.addr;
+               break;
+       case INTEGER:
+               *idst = strtoul(ret.addr, NULL, 10);
+               break;
+       case FLOAT:
+               *fdst = strtof(ret.addr, NULL);
+               break;
+       }
+       return 0;
+}
+
+void
+config_init(Display *dpy)
+{
+       char *resm;
+       XrmDatabase db;
+       ResourcePref *p;
+
+       XrmInitialize();
+       resm = XResourceManagerString(dpy);
+       if (!resm)
+               return;
+
+       db = XrmGetStringDatabase(resm);
+       for (p = resources; p < resources + LEN(resources); p++)
+               resource_load(db, p->name, p->type, p->dst);
+}
+
 static void
 usage(void)
 {
@@ -465,6 +531,8 @@ main(int argc, char **argv) {
        if (setuid(duid) < 0)
                die("slock: setuid: %s\n", strerror(errno));
 
+       config_init(dpy);
+
        /* check for Xrandr support */
        rr.active = XRRQueryExtension(dpy, &rr.evbase, &rr.errbase);