1 files changed, 42 insertions, 0 deletions
diff --git a/libgo/go/cmd/go/internal/modconv/vyml.go b/libgo/go/cmd/go/internal/modconv/vyml.go
new file mode 100644
index 00000000000..0f017a3c7a6
--- /dev/null
+++ b/libgo/go/cmd/go/internal/modconv/vyml.go
@@ -0,0 +1,42 @@
+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package modconv
+
+import (
+	"strings"
+
+	"cmd/go/internal/modfile"
+	"cmd/go/internal/module"
+)
+
+func ParseVendorYML(file string, data []byte) (*modfile.File, error) {
+	mf := new(modfile.File)
+	vendors := false
+	path := ""
+	for lineno, line := range strings.Split(string(data), "\n") {
+		lineno++
+		if line == "" {
+			continue
+		}
+		if strings.HasPrefix(line, "vendors:") {
+			vendors = true
+		} else if line[0] != '-' && line[0] != ' ' && line[0] != '\t' {
+			vendors = false
+		}
+		if !vendors {
+			continue
+		}
+		if strings.HasPrefix(line, "- path:") {
+			path = strings.TrimSpace(line[len("- path:"):])
+		}
+		if strings.HasPrefix(line, "  rev:") {
+			rev := strings.TrimSpace(line[len("  rev:"):])
+			if path != "" && rev != "" {
+				mf.Require = append(mf.Require, &modfile.Require{Mod: module.Version{Path: path, Version: rev}})
+			}
+		}
+	}
+	return mf, nil
+}