feat: start testcard implementation

src/bbansi.nim

@@ -153,6 +153,19 @@ flags:
         &"[yellow]-{s}[/]  [green]--{l.alignLeft(longOptPad)}[/] {d}").join("\n  ")
     ))
 
+  proc testCard =
+    for style in [
+        "bold", "faint", "italic", "underline",
+        "blink", "reverse", "conceal", "strike"]:
+      echo style, " -> ", bb(&"[{style}]****")
+    const colors = [
+      "black", "red", "green", "yellow",
+      "blue", "magenta", "cyan", "white", ]
+    for color in colors:
+      echo color, " -> ", bb(&"[{color}]****")
+    for color in colors:
+      echo "on ", color, " -> ", bb(&"[ on {color}]****")
+
   proc debug(bbs: BbString): string =
     echo "bbString("
     echo "  raw: ", bbs.raw
@@ -179,6 +192,7 @@ flags:
       case key:
         of "help", "h": writeHelp()
         of "version", "v": writeVersion()
+        of "testCard": testCard(); quit(QuitSuccess)
         of "style", "s":
           if val == "":
             echo "[red]ERROR[/]: expected value for -s/--style".bb

src/bbansi/styles.nim

@@ -3,7 +3,7 @@ import std/[strtabs, strutils]
 let bbReset* = "\e[0m"
 
 let
-  bbStyles = {
+  bbStyles* = {
    "bold": "1",
    "b": "1",
    "faint": "2",
@@ -15,9 +15,10 @@ let
    "reverse": "7",
    "conceal": "8",
    "strike": "9",
+
     }.newStringTable(modeCaseInsensitive)
 
-  bbColors = {
+  bbColors* = {
     "black": "0",
     "red": "1",
     "green": "2",
@@ -32,8 +33,8 @@ proc toAnsiCode*(s: string): string =
   var
     styles: seq[string]
     bgStyle: string
-  if " on " in s:
-    let fgBgSplit = s.rsplit(" on ", maxsplit = 1)
+  if " on " in s or s.startswith("on"):
+    let fgBgSplit = s.rsplit("on", maxsplit = 1)
     styles = fgBgSplit[0].splitWhitespace()
     bgStyle = fgBgSplit[1].strip()
   else: