Initial v1.0.0 commit

vendor/github.com/gobuffalo/packr/v2/walk.go

@@ -0,0 +1,80 @@
+package packr
+
+import (
+	"sort"
+	"strings"
+
+	"github.com/gobuffalo/packd"
+	"github.com/gobuffalo/packr/v2/file"
+	"github.com/gobuffalo/packr/v2/file/resolver"
+	"github.com/gobuffalo/packr/v2/plog"
+)
+
+// WalkFunc is used to walk a box
+type WalkFunc = packd.WalkFunc
+
+// Walk will traverse the box and call the WalkFunc for each file in the box/folder.
+func (b *Box) Walk(wf WalkFunc) error {
+	m := map[string]file.File{}
+
+	dr := b.DefaultResolver
+	if dr == nil {
+		cd := resolver.OsPath(b.ResolutionDir)
+		dr = &resolver.Disk{Root: cd}
+	}
+	if fm, ok := dr.(file.FileMappable); ok {
+		for n, f := range fm.FileMap() {
+			m[n] = f
+		}
+	}
+	var err error
+	b.resolvers.Range(func(n string, r resolver.Resolver) bool {
+		var f file.File
+		f, err = r.Resolve("", n)
+		if err != nil {
+			return false
+		}
+		keep := true
+		for k := range m {
+			if strings.EqualFold(k, n) {
+				keep = false
+			}
+		}
+		if keep {
+			m[n] = f
+		}
+		return true
+	})
+	if err != nil {
+		return err
+	}
+
+	var keys = make([]string, 0, len(m))
+	for k := range m {
+		keys = append(keys, k)
+	}
+	sort.Strings(keys)
+
+	for _, k := range keys {
+		osPath := resolver.OsPath(k)
+		plog.Debug(b, "Walk", "path", k, "osPath", osPath)
+		if err := wf(osPath, m[k]); err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+// WalkPrefix will call box.Walk and call the WalkFunc when it finds paths that have a matching prefix
+func (b *Box) WalkPrefix(prefix string, wf WalkFunc) error {
+	ipref := resolver.OsPath(prefix)
+	return b.Walk(func(path string, f File) error {
+		ipath := resolver.OsPath(path)
+		if strings.HasPrefix(ipath, ipref) {
+			if err := wf(path, f); err != nil {
+				return err
+			}
+		}
+		return nil
+	})
+}