From: Daniel Liu <mr.picklepinosaur@gmail.com>
Date: Fri, 18 Sep 2020 03:03:04 +0000 (-0400)
Subject: applied xresources
X-Git-Url: https://git.danieliu.xyz/?a=commitdiff_plain;h=ff479c17a10cceb09821ab908f361ed3b99758d4;p=slock.git

applied xresources
---

diff --git a/config.def.h b/config.def.h
index 9855e21..233a1b3 100644
--- a/config.def.h
+++ b/config.def.h
@@ -8,5 +8,16 @@ static const char *colorname[NUMCOLS] = {
 	[FAILED] = "#CC3333",   /* wrong password */
 };
 
+
+/*
+ * Xresources preferences to load at startup
+ */
+ResourcePref resources[] = {
+		{ "color0",       STRING,  &colorname[INIT] },
+		{ "color4",       STRING,  &colorname[INPUT] },
+		{ "color1",       STRING,  &colorname[FAILED] },
+		{ "color3",       STRING,  &colorname[CAPS] },
+};
+
 /* treat a cleared input like a wrong password (color) */
 static const int failonclear = 1;
diff --git a/slock.c b/slock.c
index 5ae738c..e336974 100644
--- 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>
@@ -18,6 +19,7 @@
 #include <X11/keysym.h>
 #include <X11/Xlib.h>
 #include <X11/Xutil.h>
+#include <X11/Xresource.h>
 
 #include "arg.h"
 #include "util.h"
@@ -44,6 +46,19 @@ 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
@@ -297,6 +312,57 @@ 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)
 {
@@ -355,6 +421,8 @@ 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);
 
diff --git a/util.h b/util.h
index 6f748b8..148dbc1 100644
--- a/util.h
+++ b/util.h
@@ -1,2 +1,5 @@
+/* macros */
+#define LEN(a)			(sizeof(a) / sizeof(a)[0])
+
 #undef explicit_bzero
 void explicit_bzero(void *, size_t);