refactor to go-restful

vendor/github.com/gobuffalo/packd/skip_walker.go

@@ -0,0 +1,45 @@
+package packd
+
+import (
+	"path/filepath"
+	"strings"
+
+	"github.com/pkg/errors"
+)
+
+var CommonSkipPrefixes = []string{".", "_", "node_modules", "vendor"}
+
+// SkipWalker will walk the Walker and call the WalkFunc for files who's directories
+// do no match any of the skipPrefixes. If no skipPrefixes are passed, then
+// CommonSkipPrefixes is used
+func SkipWalker(walker Walker, skipPrefixes []string, wf WalkFunc) error {
+	if len(skipPrefixes) == 0 {
+		skipPrefixes = append(skipPrefixes, CommonSkipPrefixes...)
+	}
+	return walker.Walk(func(path string, file File) error {
+		fi, err := file.FileInfo()
+		if err != nil {
+			return errors.WithStack(err)
+		}
+
+		path = strings.Replace(path, "\\", "/", -1)
+
+		parts := strings.Split(path, "/")
+		if !fi.IsDir() {
+			parts = parts[:len(parts)-1]
+		}
+
+		for _, base := range parts {
+			if base != "." {
+				for _, skip := range skipPrefixes {
+					skip = strings.ToLower(skip)
+					lbase := strings.ToLower(base)
+					if strings.HasPrefix(lbase, skip) {
+						return filepath.SkipDir
+					}
+				}
+			}
+		}
+		return wf(path, file)
+	})
+}