added cli client

README.md

@@ -80,6 +80,7 @@ The default font is `standard`. These are the builtin fonts
 Other fonts can mainly be found on [figlet](http://www.figlet.org). You have to load them as in [this example](#other-font).
 
 ## Todo
-- [ ] Cli client
+- [x] Cli client
 - [ ] automatic the perfect char margin
-- [ ] Linebreak possible?
+- [ ] Linebreak possible?
+- [ ] Colors in the cli client

cmd/figlet4go/figlet4go.go

@@ -2,12 +2,56 @@ package main
 
 import (
 	"fmt"
-	_"flag"
+	"flag"
+	"log"
+	"errors"
 	_"github.com/fatih/color"
-	_"github.com/probandula/figlet4go"
+	"github.com/probandula/figlet4go"
 )
 
+var (
+	str *string = flag.String("str", "", "String to be converted with FIGlet")
+	font *string = flag.String("font", "", "Font name to use")
+	fontpath *string = flag.String("fontpath", "", "Font path to load fonts from")
+)
 
 func main() {
-	fmt.Println("Hello Figlet")
+	// Parse the flags
+	flag.Parse()
+
+	// Validate and log the error
+	err := validate()
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	// Create objects
+	ascii := figlet4go.NewAsciiRender()
+	options := figlet4go.NewRenderOptions()
+
+	// Load fonts
+	if *fontpath != "" {
+		ascii.LoadFont(*fontpath)
+	}
+
+	// Set the font
+	options.FontName = *font
+
+
+	// Render the string
+	renderStr, err := ascii.RenderOpts(*str, options)
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	fmt.Println(renderStr)
+}
+
+// Validate if all required options are given
+// flag.Parse() must be called before this
+func validate() error {
+	if *str == "" {
+		return errors.New("No string given")
+	}
+	return nil
 }