Rewrite configuration loading

Rewrited loadConfig() function to walk the project directory
looking for bee.json and Beefile. If no configuration file
found, it fallbacks to the default configuration. In case
of an error, a log message is printed to the console.

conf.go

@@ -19,6 +19,9 @@ import (
 	"io/ioutil"
 	"os"
 
+	"io"
+	"path/filepath"
+
 	"gopkg.in/yaml.v2"
 )
 
@@ -75,42 +78,58 @@ var conf struct {
 }
 
 // loadConfig loads customized configuration.
-func loadConfig() error {
-	foundConf := false
-	f, err := os.Open("bee.json")
-	if err == nil {
-		defer f.Close()
-		ColorLog("[INFO] Detected bee.json\n")
-		d := json.NewDecoder(f)
-		err = d.Decode(&conf)
+func loadConfig() (err error) {
+	err = filepath.Walk(".", func(path string, fileInfo os.FileInfo, err error) error {
 		if err != nil {
+			return nil
+		}
+
+		if fileInfo.IsDir() {
+			return nil
+		}
+
+		if fileInfo.Name() == "bee.json" {
+			ColorLog("[INFO] Loading configuration from 'bee.json'...\n")
+			err = parseJSON(path, conf)
+			if err != nil {
+				ColorLog("[ERRO] Failed to parse JSON file: %v\n", err)
 				return err
 			}
-		foundConf = true
+			return io.EOF
 		}
-	byml, erryml := ioutil.ReadFile("Beefile")
-	if erryml == nil {
-		ColorLog("[INFO] Detected Beefile\n")
-		err = yaml.Unmarshal(byml, &conf)
+
+		if fileInfo.Name() == "Beefile" {
+			ColorLog("[INFO] Loading configuration from 'Beefile'...\n")
+			err = parseYAML(path, conf)
 			if err != nil {
+				ColorLog("[ERRO] Failed to parse YAML file: %v\n", err)
 				return err
 			}
-		foundConf = true
+			return io.EOF
 		}
-	if !foundConf {
-		// Use default.
+		return nil
+	})
+
+	// In case no configuration file found or an error different than io.EOF,
+	// fallback to default configuration
+	if err != io.EOF {
+		ColorLog("[INFO] Loading default configuration...\n")
 		err = json.Unmarshal([]byte(defaultConf), &conf)
 		if err != nil {
-			return err
+			return
 		}
 	}
-	// Check format version.
+
+	// No need to return io.EOF error
+	err = nil
+
+	// Check format version
 	if conf.Version != ConfVer {
-		ColorLog("[WARN] Your bee.json is out-of-date, please update!\n")
+		ColorLog("[WARN] Your bee.json is outdated. Please do consider updating it.\n")
 		ColorLog("[HINT] Compare bee.json under bee source code path and yours\n")
 	}
 
-	// Set variables.
+	// Set variables
 	if len(conf.DirStruct.Controllers) == 0 {
 		conf.DirStruct.Controllers = "controllers"
 	}
@@ -118,7 +137,39 @@ func loadConfig() error {
 		conf.DirStruct.Models = "models"
 	}
 
-	// Append watch exts.
+	// Append watch exts
 	watchExts = append(watchExts, conf.WatchExt...)
+	return
+}
+
+func parseJSON(path string, v interface{}) error {
+	var (
+		data []byte
+		err  error
+	)
+	data, err = ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+	err = json.Unmarshal(data, &v)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func parseYAML(path string, v interface{}) error {
+	var (
+		data []byte
+		err  error
+	)
+	data, err = ioutil.ReadFile(path)
+	if err != nil {
+		return err
+	}
+	err = yaml.Unmarshal(data, &v)
+	if err != nil {
+		return err
+	}
 	return nil
 }

run.go

@@ -115,7 +115,7 @@ func runApp(cmd *Command, args []string) int {
 
 	err := loadConfig()
 	if err != nil {
-		ColorLog("[ERRO] Fail to parse bee.json[ %s ]\n", err)
+		ColorLog("[ERRO] Failed to load configuration [ %s ]\n", err)
 	}
 
 	var paths []string