cleaning main + quiet mode

config.go

@@ -2,6 +2,7 @@ package main
 
 import (
 	"encoding/json"
+	"flag"
 	"fmt"
 	"os"
 	"strconv"
@@ -18,6 +19,7 @@ type Config struct {
 	OutputHeight int    `json:output_height`
 	Grayscale    bool
 	Amount       int
+	Quiet        bool
 }
 
 // loads configuration values from json file
@@ -43,5 +45,21 @@ func (c *Config) SetOutputDimensions() {
 	c.OutputHeight = height
 }
 
+func initConfigRegister() {
+	// command line arguments
+	flag.StringVar(&ConfigRegister.Method, "blending", "darken", "Blending methods : darken, lighten, fuckyfun")
+	flag.StringVar(&ConfigRegister.OutputDir, "output", "./", "Output directory")
+	flag.StringVar(&ConfigRegister.InputDir, "input", "/home/gator/Photos", "Input directory. Where to look the images from")
+	flag.StringVar(&ConfigRegister.BaseImage, "base-img", "", "Path to the base image to work with. Random image if not set")
+	flag.StringVar(&ConfigRegister.Dimensions, "dimensions", "1280x1024", "Out image dimensions. <width>x<height>")
+	flag.BoolVar(&ConfigRegister.Grayscale, "grayscale", false, "Output image in shade of gray (around 50)")
+	flag.IntVar(&ConfigRegister.Amount, "amount", 2, "Number of images to blend together")
+	flag.BoolVar(&ConfigRegister.Quiet, "quiet", false, "No progress messages")
+	flag.Parse()
+
+	// set output's width and height
+	ConfigRegister.SetOutputDimensions()
+}
+
 // global register to acccess configuration values
 var ConfigRegister Config

main.go

@@ -1,28 +1,24 @@
 package main
 
 import (
-	"flag"
 	_ "image/jpeg"
 	_ "image/png"
+	"io/ioutil"
+	"log"
 )
 
 func main() {
-	// command line arguments
-	flag.StringVar(&ConfigRegister.Method, "blending", "darken", "Blending methods : darken, lighten, fuckyfun")
-	flag.StringVar(&ConfigRegister.OutputDir, "output", "./", "Output directory")
-	flag.StringVar(&ConfigRegister.InputDir, "input", "/home/gator/Photos", "Input directory. Where to look the images from")
-	flag.StringVar(&ConfigRegister.BaseImage, "base-img", "", "Path to the base image to work with. Random image if not set")
-	flag.StringVar(&ConfigRegister.Dimensions, "dimensions", "1280x1024", "Out image dimensions. <width>x<height>")
-	flag.BoolVar(&ConfigRegister.Grayscale, "grayscale", false, "Output image in shade of gray (around 50)")
-	flag.IntVar(&ConfigRegister.Amount, "amount", 2, "Number of images to blend together")
-	flag.Parse()
+	// store command line arguments into the register
+	initConfigRegister()
 
-	// set output's width and height
-	ConfigRegister.SetOutputDimensions()
+	if ConfigRegister.Quiet {
+		log.SetOutput(ioutil.Discard)
+
+	}
 
 	// pool of workers unionizing, ready to blend a new picture using the power of friendship
 	var pool blendWorkerPool
 
-	// main blending routine
+	// launch main blending routine
 	pool.BlendImagesMain()
 }