fix(spec): properly translate v0 into v1

spec/v0/spec.go

@@ -19,6 +19,8 @@ import (
 	"sort"
 )
 
+const Version = 0
+
 // JsonnetFile is the structure of a `.json` file describing a set of jsonnet
 // dependencies. It is used for both, the jsonnetFile and the lockFile.
 type JsonnetFile struct {

spec/v1/v0.go

@@ -0,0 +1,36 @@
+package spec
+
+import (
+	"path/filepath"
+
+	v0 "github.com/jsonnet-bundler/jsonnet-bundler/spec/v0"
+	"github.com/jsonnet-bundler/jsonnet-bundler/spec/v1/deps"
+)
+
+func FromV0(mv0 v0.JsonnetFile) (JsonnetFile, error) {
+	m := New()
+	m.LegacyImports = true
+
+	for name, old := range mv0.Dependencies {
+		var d deps.Dependency
+
+		switch {
+		case old.Source.GitSource != nil:
+			d = *deps.Parse("", old.Source.GitSource.Remote)
+
+			subdir := filepath.Clean("/" + old.Source.GitSource.Subdir)
+			d.Source.GitSource.Subdir = subdir
+
+		case old.Source.LocalSource != nil:
+			d = *deps.Parse("", old.Source.LocalSource.Directory)
+		}
+
+		d.Sum = old.Sum
+		d.Version = old.Version
+		d.LegacyNameCompat = name
+
+		m.Dependencies[d.Name()] = d
+	}
+
+	return m, nil
+}