Add tdfiglet -R option for random font with retry (e.g. if too wide for screen)

... use with caution as you could get into an infinite exception/retry loop
using this feature.

tdfonts_lib opt.retry added (default: false/disabled)

Removed some unnecessary comments from lib source

exec/load/tdfonts_lib.js

@@ -20,17 +20,13 @@ var CENTER_JUSTIFY = 2;
 
 var DEFAULT_WIDTH = 80;
 
-// Default font directory and extension - adjust as needed for your Synchronet setup
-var FONT_DIR = system.ctrl_dir + 'tdfonts/'; // Assuming fonts directory is relative to the script
+var FONT_DIR = system.ctrl_dir + 'tdfonts/';
 var FONT_EXT = "tdf";
 var DEFAULT_FONT = "brndamgx";
 
 // Character list
 var charlist = "!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";
 
-// Synchronet JS does not have direct equivalents for gettimeofday and srand for seeding random.
-// We will use Math.random() directly for random font selection if needed.
-
 function loadfont(fn_arg) {
     var font = {}; // Use object for font_t
     var map = null; // Represents the font file data
@@ -344,6 +340,9 @@ function reset_color()
 }
 
 function output(str, font) {
+	var orgfont = font;
+	while (true) {
+		try {
 			if (!font) { // Random font file selection
 				var fontDir = FONT_DIR;
 				var files = directory(fontDir + "/*.tdf"); // Get all .tdf files
@@ -360,8 +359,9 @@ function output(str, font) {
 				var array = str.split(/\s+/);
 				if (array.length > 1) {
 					var out = "";
-			while (str = array.shift()) {
-				out += output_line(str, font);
+					var word;
+					while (word = array.shift()) {
+						out += output_line(word, font);
 						if (array.length && (!this.opt || opt.blankline !== false))
 							out += "\r\n";
 					}
@@ -369,6 +369,16 @@ function output(str, font) {
 				}
 			}
 			return output_line(str, font);
+		} catch(e) {
+			if (!orgfont && this.opt && opt.retry === true) {
+				if (opt.info)
+					alert("exception: " + e);
+				font = undefined;
+				continue;
+			}
+			throw e;
+		}
+	}
 }
 
 // Calculate the total width of the string using the font
@@ -420,9 +430,10 @@ function output_line(str, font) {
     if (justify === CENTER_JUSTIFY) {
         padding = Math.floor((width - linewidth) / 2);
     } else if (justify === RIGHT_JUSTIFY) {
-        padding = Math.floor(width - (linewidth + padding));
+        padding = width - (linewidth + padding);
     }
-	linewidth += Math.max(0, padding);
+	padding = Math.max(0, padding);
+	linewidth += padding;
 	if(linewidth > width)
 		throw new Error(format("Rendered line width (%u) > screen width (%u)", linewidth, width));
 

exec/tdfiglet.js

@@ -23,6 +23,7 @@ function usage() {
 	writeln("    -W        Always word-wrap the output");
 	writeln("    -i        Print font details");
 	writeln("    -r        Use random font and/or index (if not specified with -x)");
+	writeln("    -R        Use random font and auto-retry upon exception");
 	writeln("    -h        Print usage");
 	writeln("");
 	exit(1);
@@ -70,6 +71,9 @@ for(i = 0; i < argv.length; ++i) {
 		tdf.opt.info = true;
 	} else if (arg === "-r") {
 		tdf.opt.random = true;
+	} else if (arg === "-R") {
+		tdf.opt.random = true;
+		tdf.opt.retry = true;
 	} else if (arg === "-n") {
 		tdf.opt.blankline = false;
 	} else if (arg === "-W") {