refactor(golang): use tabs instead of spaces for indentation

Author: php-coder

examples/go/chi/mysql/app.go

@@ -9,45 +9,45 @@ import "github.com/jmoiron/sqlx"
 import _ "github.com/go-sql-driver/mysql"
 
 func main() {
-	mapper := func(name string) string {
-		value := os.Getenv(name)
-		switch name {
-		case "DB_HOST":
-			if value == "" {
-				value = "localhost"
-			}
-		case "DB_NAME", "DB_USER", "DB_PASSWORD":
-			if value == "" {
-				fmt.Fprintf(os.Stderr, "%s env variable is not set or empty\n", name)
-				os.Exit(1)
-			}
-		}
-		return value
-	}
-
-	dsn := os.Expand("${DB_USER}:${DB_PASSWORD}@tcp(${DB_HOST}:3306)/${DB_NAME}", mapper)
-	db, err := sqlx.Open("mysql", dsn)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "sqlx.Open failed: %v\n", err)
-		os.Exit(1)
-	}
-	defer db.Close()
-
-	if err = db.Ping(); err != nil {
-		fmt.Fprintf(os.Stderr, "Ping failed: could not connect to database: %v\n", err)
-		os.Exit(1)
-	}
-
-	r := chi.NewRouter()
-	registerRoutes(r, db)
-
-	port := os.Getenv("PORT")
-	if port == "" {
-		port = "3000"
-	}
-
-	fmt.Println("Listen on " + port)
-	err = http.ListenAndServe(":"+port, r)
-	fmt.Fprintf(os.Stderr, "ListenAndServe failed: %v\n", err)
-	os.Exit(1)
+    mapper := func(name string) string {
+        value := os.Getenv(name)
+        switch name {
+        case "DB_HOST":
+            if value == "" {
+                value = "localhost"
+            }
+        case "DB_NAME", "DB_USER", "DB_PASSWORD":
+            if value == "" {
+                fmt.Fprintf(os.Stderr, "%s env variable is not set or empty\n", name)
+                os.Exit(1)
+            }
+        }
+        return value
+    }
+
+    dsn := os.Expand("${DB_USER}:${DB_PASSWORD}@tcp(${DB_HOST}:3306)/${DB_NAME}", mapper)
+    db, err := sqlx.Open("mysql", dsn)
+    if err != nil {
+        fmt.Fprintf(os.Stderr, "sqlx.Open failed: %v\n", err)
+        os.Exit(1)
+    }
+    defer db.Close()
+
+    if err = db.Ping(); err != nil {
+        fmt.Fprintf(os.Stderr, "Ping failed: could not connect to database: %v\n", err)
+        os.Exit(1)
+    }
+
+    r := chi.NewRouter()
+    registerRoutes(r, db)
+
+    port := os.Getenv("PORT")
+    if port == "" {
+        port = "3000"
+    }
+
+    fmt.Println("Listen on " + port)
+    err = http.ListenAndServe(":"+port, r)
+    fmt.Fprintf(os.Stderr, "ListenAndServe failed: %v\n", err)
+    os.Exit(1)
 }