xres.c

int cursorblinkstate = 0;

#define XRESOURCE_LOAD_META(NAME)					\
	if(!XrmGetResource(xrdb, "st." NAME, "st." NAME, &type, &ret))	\
		XrmGetResource(xrdb, "*." NAME, "*." NAME, &type, &ret); \
	if (ret.addr != NULL && !strncmp("String", type, 64))

#define XRESOURCE_LOAD_STRING(NAME, DST)	\
	XRESOURCE_LOAD_META(NAME)		\
		DST = ret.addr;

#define XRESOURCE_LOAD_CHAR(NAME, DST)		\
	XRESOURCE_LOAD_META(NAME)		\
		DST = ret.addr[0];

#define XRESOURCE_LOAD_INTEGER(NAME, DST)		\
	XRESOURCE_LOAD_META(NAME)			\
		DST = strtoul(ret.addr, NULL, 10);

#define XRESOURCE_LOAD_FLOAT(NAME, DST)		\
	XRESOURCE_LOAD_META(NAME)		\
		DST = strtof(ret.addr, NULL);

void
xrdb_load(void)
{
	/* XXX */
	char *xrm;
	char *type;
	XrmDatabase xrdb;
	XrmValue ret;
	Display *dpy;

	if(!(dpy = XOpenDisplay(NULL)))
		die("Can't open display\n");

	XrmInitialize();
	xrm = XResourceManagerString(dpy);

	if (xrm != NULL) {
		xrdb = XrmGetStringDatabase(xrm);

		/* handling colors here without macros to do via loop. */
		int i = 0;
		char loadValue[12] = "";
		for (i = 0; i < 256; i++)
		{
			sprintf(loadValue, "%s%d", "st.color", i);

			if(!XrmGetResource(xrdb, loadValue, loadValue, &type, &ret))
			{
				sprintf(loadValue, "%s%d", "*.color", i);
				if (!XrmGetResource(xrdb, loadValue, loadValue, &type, &ret))
					/* reset if not found (unless in range for defaults). */
					if (i > 15)
						colorname[i] = NULL;
			}

			if (ret.addr != NULL && !strncmp("String", type, 64))
				colorname[i] = ret.addr;
		}

		XRESOURCE_LOAD_STRING("foreground", colorname[defaultfg]);
		XRESOURCE_LOAD_STRING("background", colorname[defaultbg]);
		XRESOURCE_LOAD_STRING("cursorbg", colorname[defaultcs])
		else {
			// this looks confusing because we are chaining off of the if
			// in the macro. probably we should be wrapping everything blocks
			// so this isn't possible...
			defaultcs = defaultfg;
		}
		/* I can't tell what this does... */
		XRESOURCE_LOAD_STRING("cursorfg", colorname[defaultrcs])
		else {
			// see above.
			defaultrcs = defaultbg;
		}

		XRESOURCE_LOAD_STRING("font", font);
		/* XRESOURCE_LOAD_STRING("termname", termname); */

		/* XRESOURCE_LOAD_INTEGER("blinktimeout", blinktimeout); */
		/* XRESOURCE_LOAD_INTEGER("bellvolume", bellvolume); */
		XRESOURCE_LOAD_INTEGER("disablebold", disablebold);
		XRESOURCE_LOAD_INTEGER("disableitalic", disableitalic);
		XRESOURCE_LOAD_INTEGER("disableroman", disableroman);
		XRESOURCE_LOAD_INTEGER("borderpx", borderpx);
		/* XRESOURCE_LOAD_INTEGER("borderless", borderless); */
		/* XRESOURCE_LOAD_INTEGER("cursorshape", cursorshape); */
		/* XRESOURCE_LOAD_INTEGER("disable_alpha_correction", disable_alpha_correction); */

		cursorblinkstate = 1; // in case if cursor shape was changed from a blinking one to a non-blinking
		/* XRESOURCE_LOAD_INTEGER("cursorthickness", cursorthickness); */
		/* XRESOURCE_LOAD_INTEGER("cursorblinkstyle", cursorblinkstyle); */
		/* XRESOURCE_LOAD_INTEGER("cursorblinkontype", cursorblinkontype); */

		/* XRESOURCE_LOAD_INTEGER("scrollrate", scrollrate); */

		/* XRESOURCE_LOAD_FLOAT("cwscale", cwscale); */
		/* XRESOURCE_LOAD_FLOAT("chscale", chscale); */
		XRESOURCE_LOAD_FLOAT("alpha", alpha);

		/* XRESOURCE_LOAD_INTEGER("boxdraw", boxdraw); */
		/* XRESOURCE_LOAD_INTEGER("boxdraw_bold", boxdraw_bold); */
		/* XRESOURCE_LOAD_INTEGER("boxdraw_braille", boxdraw_braille); */
	}
	XFlush(dpy);
}

void
reload(int sig)
{
	xrdb_load();

	/* colors, fonts */
	xloadcols();
	xunloadfonts();
	xloadfonts(font, 0);
	xsetcursor(cursorshape);

	if (sig != -1) {
		/* pretend the window just got resized */
		cresize(win.w, win.h);
		redraw();
		/* triggers re-render if we're visible. */
		ttywrite("\033[O", 3, 1);
	}

	signal(SIGUSR1, reload);
}