Update gochecknoglobals

_linters/src/4d63.com/gochecknoglobals/check_no_globals.go

@@ -10,7 +10,23 @@ import (
 	"strings"
 )
 
-func checkNoGlobals(rootPath string) ([]string, error) {
+func isWhitelisted(i *ast.Ident) bool {
+	return i.Name == "_" || looksLikeError(i)
+}
+
+// looksLikeError returns true if the AST identifier starts
+// with 'err' or 'Err', or false otherwise.
+//
+// TODO: https://github.com/leighmcculloch/gochecknoglobals/issues/5
+func looksLikeError(i *ast.Ident) bool {
+	prefix := "err"
+	if i.IsExported() {
+		prefix = "Err"
+	}
+	return strings.HasPrefix(i.Name, prefix)
+}
+
+func checkNoGlobals(rootPath string, includeTests bool) ([]string, error) {
 	const recursiveSuffix = string(filepath.Separator) + "..."
 	recursive := false
 	if strings.HasSuffix(rootPath, recursiveSuffix) {
@@ -33,6 +49,9 @@ func checkNoGlobals(rootPath string) ([]string, error) {
 		if !strings.HasSuffix(path, ".go") {
 			return nil
 		}
+		if !includeTests && strings.HasSuffix(path, "_test.go") {
+			return nil
+		}
 
 		fset := token.NewFileSet()
 		file, err := parser.ParseFile(fset, path, nil, 0)
@@ -50,14 +69,15 @@ func checkNoGlobals(rootPath string) ([]string, error) {
 			}
 			filename := fset.Position(genDecl.TokPos).Filename
 			line := fset.Position(genDecl.TokPos).Line
-			valueSpec := genDecl.Specs[0].(*ast.ValueSpec)
-			for i := 0; i < len(valueSpec.Names); i++ {
-				name := valueSpec.Names[i].Name
-				if name == "_" {
-					continue
+			for _, spec := range genDecl.Specs {
+				valueSpec := spec.(*ast.ValueSpec)
+				for _, vn := range valueSpec.Names {
+					if isWhitelisted(vn) {
+						continue
+					}
+					message := fmt.Sprintf("%s:%d %s is a global variable", filename, line, vn.Name)
+					messages = append(messages, message)
 				}
-				message := fmt.Sprintf("%s:%d %s is a global variable", filename, line, name)
-				messages = append(messages, message)
 			}
 		}
 		return nil

_linters/src/4d63.com/gochecknoglobals/main.go

@@ -7,9 +7,11 @@ import (
 )
 
 func main() {
-	flagPrintHelp := flag.Bool("help", false, "")
+	flagPrintHelp := flag.Bool("h", false, "Print help")
+	flagIncludeTests := flag.Bool("t", false, "Include tests")
 	flag.Usage = func() {
-		fmt.Fprintf(os.Stderr, "Usage: gochecknoglobals [path] [path] ...\n")
+		fmt.Fprintf(os.Stderr, "Usage: gochecknoglobals [-t] [path] [path] ...\n")
+		flag.PrintDefaults()
 	}
 	flag.Parse()
 
@@ -18,6 +20,8 @@ func main() {
 		return
 	}
 
+	includeTests := *flagIncludeTests
+
 	paths := flag.Args()
 	if len(paths) == 0 {
 		paths = []string{"./..."}
@@ -26,7 +30,7 @@ func main() {
 	exitWithError := false
 
 	for _, path := range paths {
-		messages, err := checkNoGlobals(path)
+		messages, err := checkNoGlobals(path, includeTests)
 		for _, message := range messages {
 			fmt.Fprintf(os.Stdout, "%s\n", message)
 			exitWithError = true

_linters/src/manifest

@@ -5,7 +5,7 @@
 			"importpath": "4d63.com/gochecknoglobals",
 			"repository": "https://github.com/leighmcculloch/gochecknoglobals",
 			"vcs": "git",
-			"revision": "9a66a4a931c82990a7eb42e057408ac5f2bb6bee",
+			"revision": "5090db600a84f7a401cb031f4e8e2e420b0e1ecd",
 			"branch": "master",
 			"notests": true
 		},