providers/path: Add functions to check if a file is hidden

providers/path/path.go

@@ -1,10 +1,13 @@
 package path
 
 import "path"
-// import "strings"
+import "strings"
 import "html/template"
+import "path/filepath"
 import "git.tebibyte.media/sashakoshka/step"
 
+const hiddenPrefix = "."
+
 var _ step.FuncProvider = new(Provider)
 
 // Provider provides path functions.
@@ -15,11 +18,21 @@ type Provider struct {
 // FuncMap fulfills the step.FuncProvider interface.
 func (this *Provider) FuncMap () template.FuncMap {
 	return template.FuncMap {
+		"isHidden": funcIsHidden,
+		"osIsHidden": funcOSIsHidden,
 		"joinPaths": funcJoinPaths,
 		"osJoinPaths": funcOSJoinPaths,
 	}
 }
 
+func funcIsHidden (name string) bool {
+	return strings.HasPrefix(path.Base(name), hiddenPrefix)
+}
+
+func funcOSIsHidden (name string) bool {
+	return strings.HasPrefix(filepath.Base(name), hiddenPrefix)
+}
+
 func funcJoinPaths (left, right string) string {
 	return path.Join(left, right)
 }