If no font object or filename is passed to lib, pick a font file at random

This moves the random file selection into tdfonts_lib.js

We should also pick a font index at random (when opt.random is true), but
that's not happening yet.

Also fixed up some indentation issues (when using 4 space tabstops). The
original commit of this file used spaces for indentation, so it's kind of
a mess now and should be uncrustified.

exec/load/tdfonts_lib.js

@@ -342,6 +342,16 @@ function reset_color()
 }
 
 function output(str, font) {
+	if (!font) { // Random font file selection
+		var fontDir = FONT_DIR;
+		var files = directory(fontDir + "/*.tdf"); // Get all .tdf files
+		if (files.length > 0) {
+			var randomIndex = random((files.length)+1);
+			var filename = file_getname(files[randomIndex]);
+			font = filename.replace(/\.tdf$/i, "");
+		}
+	}
+
 	if (typeof font == "string")
 		font = loadfont(font);
 
@@ -369,7 +379,7 @@ function output(str, font) {
     }
 
     // Calculate padding for justification
-    if (this.top && opt.justify === CENTER_JUSTIFY) {
+    if (this.opt && opt.justify === CENTER_JUSTIFY) {
         padding = Math.floor((opt.width - linewidth) / 2);
     } else if (this.opt && opt.justify === RIGHT_JUSTIFY) {
         padding = opt.width - linewidth;

exec/tdfiglet.js

@@ -96,17 +96,7 @@ while (i < args.length) {
 }
 
 
-// Handle random font selection
-if (!fontfile && opt.random) {
-	var fontDir = FONT_DIR;
-	var files = directory(fontDir + "/*.tdf"); // Get all .tdf files
-	if (files.length > 0) {
-		var randomIndex = random((files.length)+1);
-		var filename = file_getname(files[randomIndex]);
-		fontfile = filename.replace(/\.tdf$/i, "");
-	}
-}
-if (!fontfile)
+if (!fontfile && !opt.random)
 	usage();
 
 writeln("");