Add basic interactive overwrite strategy

Available options:

- Do not copy
- Overwrite dest
- Copy source as dest.dist

internal/command/from_project.go

@@ -1,7 +1,7 @@
 package command
 
 import (
-	"log"
+	"fmt"
 	"net/url"
 	"os"
 
@@ -32,6 +32,12 @@ func fromCommand() *cli.Command {
 				Usage:   "The scaffold manifest `FILE`",
 				Value:   "scaffold.yml",
 			},
+			&cli.StringSliceFlag{
+				Name:    "ignore",
+				Aliases: []string{"i"},
+				Usage:   "Ignore files matching pattern",
+				Value:   cli.NewStringSlice(".git", ".git/**", "./.git/**/*"),
+			},
 		},
 		Action: fromAction,
 	}
@@ -78,13 +84,13 @@ func fromAction(c *cli.Context) error {
 			return errors.Wrapf(err, "could not read manifest '%s'", manifestPath)
 		}
 
-		log.Println("Could not find scaffold manifest.")
+		fmt.Println("Could not find scaffold manifest.")
 	}
 
 	if manifestFile != nil {
 		defer manifestFile.Close()
 
-		log.Println("Loading template scaffold manifest...")
+		fmt.Println("Loading scaffold manifest.")
 
 		manifest, err := template.Load(manifestFile)
 		if err != nil {
@@ -95,6 +101,7 @@ func fromAction(c *cli.Context) error {
 			return errors.Wrapf(err, "could not validate manifest '%s'", manifestPath)
 		}
 
+		fmt.Println("Prompting for templates variables.")
 		if err := template.Prompt(manifest, templateData); err != nil {
 			return errors.Wrap(err, "could not prompt for template data")
 		}
@@ -102,9 +109,22 @@ func fromAction(c *cli.Context) error {
 
 	directory := c.String("directory")
 
-	return template.CopyDir(vfs, ".", directory, &template.Option{
-		TemplateData:   templateData,
-		TemplateExt:    ".gotpl",
-		IgnorePatterns: []string{manifestPath},
+	ignore := c.StringSlice("ignore")
+	ignore = append(ignore, manifestPath)
+
+	fmt.Println("Generating project tree.")
+
+	err = template.CopyDir(vfs, ".", directory, &template.Option{
+		TemplateData:      templateData,
+		TemplateExt:       ".gotpl",
+		IgnorePatterns:    ignore,
+		PreferredStrategy: template.Undefined,
 	})
+	if err != nil {
+		return err
+	}
+
+	fmt.Println("Done.")
+
+	return nil
 }