revel/revel#1057 code improvements docs, errcheck, cyclo, etc

Author: jeevatkm

harness/app.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package harness
 
 import (

harness/build.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package harness
 
 import (

harness/harness.go

@@ -1,13 +1,16 @@
-// The Harness for a Revel program.
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
+// Package harness for a Revel Framework.
 //
-// It has a couple responsibilities:
+// It has a following responsibilities:
 // 1. Parse the user program, generating a main.go file that registers
 //    controller classes and starts the user's server.
 // 2. Build and run the user program.  Show compile errors.
 // 3. Monitor the user source and re-build / restart the program when necessary.
 //
 // Source files are generated in the app/tmp directory.
-
 package harness
 
 import (

harness/reflect.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package harness
 
 // This file handles the app code introspection.

harness/reflect_test.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package harness
 
 import (

revel/build.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package main
 
 import (
@@ -40,7 +44,7 @@ func buildApp(args []string) {
 		return
 	}
 
-	appImportPath, destPath, mode := args[0], args[1], "dev"
+	appImportPath, destPath, mode := args[0], args[1], DefaultRunMode
 	if len(args) >= 3 {
 		mode = args[2]
 	}
@@ -55,8 +59,13 @@ func buildApp(args []string) {
 		errorf("Abort: %s exists and does not look like a build directory.", destPath)
 	}
 
-	os.RemoveAll(destPath)
-	os.MkdirAll(destPath, 0777)
+	if err := os.RemoveAll(destPath); err != nil && !os.IsNotExist(err) {
+		revel.ERROR.Fatalln(err)
+	}
+
+	if err := os.MkdirAll(destPath, 0777); err != nil {
+		revel.ERROR.Fatalln(err)
+	}
 
 	app, reverr := harness.Build()
 	panicOnError(reverr, "Failed to build")
@@ -73,9 +82,9 @@ func buildApp(args []string) {
 	tmpRevelPath := filepath.Join(srcPath, filepath.FromSlash(revel.RevelImportPath))
 	mustCopyFile(destBinaryPath, app.BinaryPath)
 	mustChmod(destBinaryPath, 0755)
-	mustCopyDir(filepath.Join(tmpRevelPath, "conf"), filepath.Join(revel.RevelPath, "conf"), nil)
-	mustCopyDir(filepath.Join(tmpRevelPath, "templates"), filepath.Join(revel.RevelPath, "templates"), nil)
-	mustCopyDir(filepath.Join(srcPath, filepath.FromSlash(appImportPath)), revel.BasePath, nil)
+	_ = mustCopyDir(filepath.Join(tmpRevelPath, "conf"), filepath.Join(revel.RevelPath, "conf"), nil)
+	_ = mustCopyDir(filepath.Join(tmpRevelPath, "templates"), filepath.Join(revel.RevelPath, "templates"), nil)
+	_ = mustCopyDir(filepath.Join(srcPath, filepath.FromSlash(appImportPath)), revel.BasePath, nil)
 
 	// Find all the modules used and copy them over.
 	config := revel.Config.Raw()
@@ -98,7 +107,7 @@ func buildApp(args []string) {
 		}
 	}
 	for importPath, fsPath := range modulePaths {
-		mustCopyDir(filepath.Join(srcPath, importPath), fsPath, nil)
+		_ = mustCopyDir(filepath.Join(srcPath, importPath), fsPath, nil)
 	}
 
 	tmplData, runShPath := map[string]interface{}{

revel/clean.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package main
 
 import (

revel/new.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package main
 
 import (
@@ -199,7 +203,7 @@ func copyNewAppFiles() {
 	err = os.MkdirAll(appPath, 0777)
 	panicOnError(err, "Failed to create directory "+appPath)
 
-	mustCopyDir(appPath, skeletonPath, map[string]interface{}{
+	_ = mustCopyDir(appPath, skeletonPath, map[string]interface{}{
 		// app.conf
 		"AppName":  appName,
 		"BasePath": basePath,

revel/package.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 package main
 
 import (
@@ -38,7 +42,7 @@ func packageApp(args []string) {
 	}
 
 	// Determine the run mode.
-	mode := "dev"
+	mode := DefaultRunMode
 	if len(args) >= 2 {
 		mode = args[1]
 	}
@@ -48,7 +52,9 @@ func packageApp(args []string) {
 
 	// Remove the archive if it already exists.
 	destFile := filepath.Base(revel.BasePath) + ".tar.gz"
-	os.Remove(destFile)
+	if err := os.Remove(destFile); err != nil && !os.IsNotExist(err) {
+		revel.ERROR.Fatal(err)
+	}
 
 	// Collect stuff in a temp directory.
 	tmpDir, err := ioutil.TempDir("", filepath.Base(revel.BasePath))

revel/rev.go

@@ -1,3 +1,7 @@
+// Copyright (c) 2012-2016 The Revel Framework Authors, All rights reserved.
+// Revel Framework source code and usage is governed by a MIT style
+// license that can be found in the LICENSE file.
+
 // The command line tool for running Revel apps.
 package main
 
@@ -15,12 +19,16 @@ import (
 	"github.com/agtorre/gocolorize"
 )
 
+// DefaultRunMode for revel's application
+const DefaultRunMode = "dev"
+
 // Command structure cribbed from the genius organization of the "go" command.
 type Command struct {
 	Run                    func(args []string)
 	UsageLine, Short, Long string
 }
 
+// Name returns command name from usage line
 func (cmd *Command) Name() string {
 	name := cmd.UsageLine
 	i := strings.Index(name, " ")