Avoid panic if repository is not specified (#79)

jrevillas · mcuadros · commit 02c228585e54 · 2016-09-23T13:39:00.000+02:00
diff --git a/examples/basic/main.go b/examples/basic/main.go
@@ -9,6 +9,11 @@ import (
 )
 
 func main() {
+	if len(os.Args) != 2 {
+		usage()
+		os.Exit(1)
+	}
+
 	fmt.Printf("Retrieving %q ...\n", os.Args[1])
 	r, err := git.NewRepository(os.Args[1], nil)
 	if err != nil {
@@ -39,3 +44,7 @@ func main() {
 		fmt.Println(commit)
 	}
 }
+
+func usage() {
+	fmt.Fprintf(os.Stderr, "%s <repository URL>", os.Args[0])
+}

Original file line number	Diff line number	Diff line change
`@@ -9,6 +9,11 @@ import (`
`9`	`9`	`)`
`10`	`10`
`11`	`11`	`func main() {`
	`12`	`+ if len(os.Args) != 2 {`
	`13`	`+ usage()`
	`14`	`+ os.Exit(1)`
	`15`	`+ }`
	`16`	`+`
`12`	`17`	`fmt.Printf("Retrieving %q ...\n", os.Args[1])`
`13`	`18`	`r, err := git.NewRepository(os.Args[1], nil)`
`14`	`19`	`if err != nil {`
`@@ -39,3 +44,7 @@ func main() {`
`39`	`44`	`fmt.Println(commit)`
`40`	`45`	`}`
`41`	`46`	`}`
	`47`	`+`
	`48`	`+func usage() {`
	`49`	`+ fmt.Fprintf(os.Stderr, "%s <repository URL>", os.Args[0])`
	`50`	`+}`