Improve watching search and configuration by improving default ignore

Now it will ignore by default hidden files and folders, test files and vendor

README.md

@@ -49,9 +49,9 @@ GLOBAL OPTIONS:
    --build-args value               arguments used on building the program
    --program-args value             arguments used on executing the program
    --verbose                        turns on the verbose messages from gaper
+   --disable-default-ignore         turns off default ignore for hidden files and folders, "*_test.go" files, and vendor folder
    --watch value, -w value          list of folders or files to watch for changes
    --ignore value, -i value         list of folders or files to ignore for changes
-                                      (always ignores all hidden files and directories)
    --poll-interval value, -p value  how often in milliseconds to poll watched files for changes (default: 500)
    --extensions value, -e value     a comma-delimited list of file extensions to watch for changes (default: "go")
    --no-restart-on value, -n value  don't automatically restart the supervised program if it ends:
@@ -62,10 +62,26 @@ GLOBAL OPTIONS:
    --version, -v                    print the version
 ```
 
+Since in most projects there is no need to watch changes of:
+
+* hidden files and folders
+* test files (`*_test.go`)
+* vendor folder
+
+Gaper by default ignores those cases already. Although, if you need Gaper to watch those files anyway it is possible to disable this setting with `--disable-default-ignore` argument.
+
 ### Examples
 
+Using all defaults provided by Gaper:
+
+```
+gaper
+```
+
 Ignore watch over all test files:
 
+> no need for this in case you are not using `--disable-default-ignore`
+
 ```
 --ignore './**/*_test.go'
 ```

cmd/gaper/main.go

@@ -17,16 +17,17 @@ var logger = gaper.NewLogger("gaper")
 func main() {
 	parseArgs := func(c *cli.Context) *gaper.Config {
 		return &gaper.Config{
-			BinName:           c.String("bin-name"),
-			BuildPath:         c.String("build-path"),
-			BuildArgsMerged:   c.String("build-args"),
-			ProgramArgsMerged: c.String("program-args"),
-			Verbose:           c.Bool("verbose"),
-			WatchItems:        c.StringSlice("watch"),
-			IgnoreItems:       c.StringSlice("ignore"),
-			PollInterval:      c.Int("poll-interval"),
-			Extensions:        c.StringSlice("extensions"),
-			NoRestartOn:       c.String("no-restart-on"),
+			BinName:              c.String("bin-name"),
+			BuildPath:            c.String("build-path"),
+			BuildArgsMerged:      c.String("build-args"),
+			ProgramArgsMerged:    c.String("program-args"),
+			Verbose:              c.Bool("verbose"),
+			DisableDefaultIgnore: c.Bool("disable-default-ignore"),
+			WatchItems:           c.StringSlice("watch"),
+			IgnoreItems:          c.StringSlice("ignore"),
+			PollInterval:         c.Int("poll-interval"),
+			Extensions:           c.StringSlice("extensions"),
+			NoRestartOn:          c.String("no-restart-on"),
 		}
 	}
 
@@ -74,6 +75,10 @@ func main() {
 			Name:  "verbose",
 			Usage: "turns on the verbose messages from gaper",
 		},
+		cli.BoolFlag{
+			Name:  "disable-default-ignore",
+			Usage: "turns off default ignore for hidden files and folders, \"*_test.go\" files, and vendor folder",
+		},
 		cli.StringSliceFlag{
 			Name:  "watch, w",
 			Usage: "list of folders or files to watch for changes",

gaper.go

@@ -37,19 +37,20 @@ var exitStatusError = 1
 
 // Config contains all settings supported by gaper
 type Config struct {
-	BinName           string
-	BuildPath         string
-	BuildArgs         []string
-	BuildArgsMerged   string
-	ProgramArgs       []string
-	ProgramArgsMerged string
-	WatchItems        []string
-	IgnoreItems       []string
-	PollInterval      int
-	Extensions        []string
-	NoRestartOn       string
-	Verbose           bool
-	WorkingDirectory  string
+	BinName              string
+	BuildPath            string
+	BuildArgs            []string
+	BuildArgsMerged      string
+	ProgramArgs          []string
+	ProgramArgsMerged    string
+	WatchItems           []string
+	IgnoreItems          []string
+	PollInterval         int
+	Extensions           []string
+	NoRestartOn          string
+	Verbose              bool
+	DisableDefaultIgnore bool
+	WorkingDirectory     string
 }
 
 // Run starts the whole gaper process watching for file changes or exit codes
@@ -61,9 +62,17 @@ func Run(cfg *Config, chOSSiginal chan os.Signal) error {
 		return err
 	}
 
+	wCfg := WatcherConfig{
+		DefaultIgnore: !cfg.DisableDefaultIgnore,
+		PollInterval:  cfg.PollInterval,
+		WatchItems:    cfg.WatchItems,
+		IgnoreItems:   cfg.IgnoreItems,
+		Extensions:    cfg.Extensions,
+	}
+
 	builder := NewBuilder(cfg.BuildPath, cfg.BinName, cfg.WorkingDirectory, cfg.BuildArgs)
 	runner := NewRunner(os.Stdout, os.Stderr, filepath.Join(cfg.WorkingDirectory, builder.Binary()), cfg.ProgramArgs)
-	watcher, err := NewWatcher(cfg.PollInterval, cfg.WatchItems, cfg.IgnoreItems, cfg.Extensions)
+	watcher, err := NewWatcher(wCfg)
 	if err != nil {
 		return fmt.Errorf("watcher error: %v", err)
 	}

watcher.go

@@ -20,6 +20,7 @@ type Watcher interface {
 
 // watcher is a interface for the watch process
 type watcher struct {
+	defaultIgnore     bool
 	pollInterval      int
 	watchItems        map[string]bool
 	ignoreItems       map[string]bool
@@ -28,27 +29,36 @@ type watcher struct {
 	errors            chan error
 }
 
+// WatcherConfig defines the settings available for the watcher
+type WatcherConfig struct {
+	DefaultIgnore bool
+	PollInterval  int
+	WatchItems    []string
+	IgnoreItems   []string
+	Extensions    []string
+}
+
 // NewWatcher creates a new watcher
-func NewWatcher(pollInterval int, watchItems []string, ignoreItems []string, extensions []string) (Watcher, error) {
-	if pollInterval == 0 {
-		pollInterval = DefaultPoolInterval
+func NewWatcher(cfg WatcherConfig) (Watcher, error) {
+	if cfg.PollInterval == 0 {
+		cfg.PollInterval = DefaultPoolInterval
 	}
 
-	if len(extensions) == 0 {
-		extensions = DefaultExtensions
+	if len(cfg.Extensions) == 0 {
+		cfg.Extensions = DefaultExtensions
 	}
 
 	allowedExts := make(map[string]bool)
-	for _, ext := range extensions {
+	for _, ext := range cfg.Extensions {
 		allowedExts["."+ext] = true
 	}
 
-	watchPaths, err := resolvePaths(watchItems, allowedExts)
+	watchPaths, err := resolvePaths(cfg.WatchItems, allowedExts)
 	if err != nil {
 		return nil, err
 	}
 
-	ignorePaths, err := resolvePaths(ignoreItems, allowedExts)
+	ignorePaths, err := resolvePaths(cfg.IgnoreItems, allowedExts)
 	if err != nil {
 		return nil, err
 	}
@@ -58,7 +68,8 @@ func NewWatcher(pollInterval int, watchItems []string, ignoreItems []string, ext
 	return &watcher{
 		events:            make(chan string),
 		errors:            make(chan error),
-		pollInterval:      pollInterval,
+		defaultIgnore:     cfg.DefaultIgnore,
+		pollInterval:      cfg.PollInterval,
 		watchItems:        watchPaths,
 		ignoreItems:       ignorePaths,
 		allowedExtensions: allowedExts,
@@ -105,12 +116,7 @@ func (w *watcher) scanChange(watchPath string) (string, error) {
 	var fileChanged string
 
 	err := filepath.Walk(watchPath, func(path string, info os.FileInfo, err error) error {
-		// always ignore hidden files and directories
-		if dir := filepath.Base(path); dir[0] == '.' && dir != "." {
-			return skipFile(info)
-		}
-
-		if _, ignored := w.ignoreItems[path]; ignored {
+		if w.ignoreFile(path, info) {
 			return skipFile(info)
 		}
 
@@ -130,6 +136,31 @@ func (w *watcher) scanChange(watchPath string) (string, error) {
 	return fileChanged, nil
 }
 
+func (w *watcher) ignoreFile(path string, info os.FileInfo) bool {
+	// check if preset ignore is enabled
+	if w.defaultIgnore {
+		// check for hidden files and directories
+		if name := info.Name(); name[0] == '.' && name != "." {
+			return true
+		}
+
+		// check if it is a Go testing file
+		if strings.HasSuffix(path, "_test.go") {
+			return true
+		}
+
+		// check if it is the vendor folder
+		if info.IsDir() && info.Name() == "vendor" {
+			return true
+		}
+	}
+
+	if _, ignored := w.ignoreItems[path]; ignored {
+		return true
+	}
+	return false
+}
+
 func resolvePaths(paths []string, extensions map[string]bool) (map[string]bool, error) {
 	result := map[string]bool{}
 

watcher_test.go

@@ -16,7 +16,14 @@ func TestWatcherDefaultValues(t *testing.T) {
 	var ignoreItems []string
 	var extensions []string
 
-	wt, err := NewWatcher(pollInterval, watchItems, ignoreItems, extensions)
+	wCfg := WatcherConfig{
+		DefaultIgnore: true,
+		PollInterval:  pollInterval,
+		WatchItems:    watchItems,
+		IgnoreItems:   ignoreItems,
+		Extensions:    extensions,
+	}
+	wt, err := NewWatcher(wCfg)
 
 	expectedPath := "testdata/server"
 	if runtime.GOOS == OSWindows {
@@ -37,7 +44,14 @@ func TestWatcherGlobPath(t *testing.T) {
 	ignoreItems := []string{"./testdata/**/*_test.go"}
 	var extensions []string
 
-	wt, err := NewWatcher(pollInterval, watchItems, ignoreItems, extensions)
+	wCfg := WatcherConfig{
+		DefaultIgnore: true,
+		PollInterval:  pollInterval,
+		WatchItems:    watchItems,
+		IgnoreItems:   ignoreItems,
+		Extensions:    extensions,
+	}
+	wt, err := NewWatcher(wCfg)
 	assert.Nil(t, err, "wacher error")
 	w := wt.(*watcher)
 	assert.Equal(t, map[string]bool{"testdata/server/main_test.go": true}, w.ignoreItems)
@@ -49,7 +63,14 @@ func TestWatcherRemoveOverlapdPaths(t *testing.T) {
 	ignoreItems := []string{"./testdata/**/*", "./testdata/server"}
 	var extensions []string
 
-	wt, err := NewWatcher(pollInterval, watchItems, ignoreItems, extensions)
+	wCfg := WatcherConfig{
+		DefaultIgnore: true,
+		PollInterval:  pollInterval,
+		WatchItems:    watchItems,
+		IgnoreItems:   ignoreItems,
+		Extensions:    extensions,
+	}
+	wt, err := NewWatcher(wCfg)
 	assert.Nil(t, err, "wacher error")
 	w := wt.(*watcher)
 	assert.Equal(t, map[string]bool{"./testdata/server": true}, w.ignoreItems)
@@ -69,7 +90,14 @@ func TestWatcherWatchChange(t *testing.T) {
 	ignoreItems := []string{testfile}
 	extensions := []string{"go"}
 
-	w, err := NewWatcher(pollInterval, watchItems, ignoreItems, extensions)
+	wCfg := WatcherConfig{
+		DefaultIgnore: true,
+		PollInterval:  pollInterval,
+		WatchItems:    watchItems,
+		IgnoreItems:   ignoreItems,
+		Extensions:    extensions,
+	}
+	w, err := NewWatcher(wCfg)
 	assert.Nil(t, err, "wacher error")
 
 	go w.Watch()