:sparkes: implement Subversion.Head().

Signed-off-by: Jeff Ortel <jortel@redhat.com>

repository/subversion.go

@@ -7,6 +7,7 @@ import (
 	urllib "net/url"
 	"os"
 	pathlib "path"
+	"regexp"
 	"strings"
 
 	liberr "github.com/jortel/go-utils/error"
@@ -16,6 +17,9 @@ import (
 	"github.com/konveyor/tackle2-hub/nas"
 )
 
+// RevisionRegex match revision embedded in `svn info`.
+var RevisionRegex = regexp.MustCompile(`(Revision\:\s+)([\d]+)`)
+
 // Subversion repository.
 type Subversion struct {
 	Authenticated
@@ -115,9 +119,22 @@ func (r *Subversion) Commit(files []string, msg string) (err error) {
 	return
 }
 
-// Head returns latest commit.
+// Head returns the current revision.
 func (r *Subversion) Head() (commit string, err error) {
-	// TODO: needs implementation.
+	cmd := r.svn()
+	cmd.Dir = r.root()
+	cmd.Options.Add("info", "-r", "HEAD")
+	err = cmd.Run()
+	if err != nil {
+		return
+	}
+	output := cmd.Output()
+	m := RevisionRegex.FindStringSubmatch(string(output))
+	if len(m) == 3 {
+		commit = m[2]
+	} else {
+		err = liberr.New("[SVN] info parser failed.")
+	}
 	return
 }
 

repository/svn_test.go

@@ -22,18 +22,3 @@ func TestSvnURL(t *testing.T) {
 	expectStr := "http://svn.corp/project/trunk/eng/product/thing/app_1"
 	g.Expect(expectStr).To(gomega.Equal(s))
 }
-
-func TestSvnFetch(t *testing.T) {
-	//g := gomega.NewGomegaWithT(t)
-	remote := Remote{
-		URL:    "http://svn.corp/project",
-		Branch: "trunk",
-		Path:   "eng/product/thing/app_1",
-	}
-	// Load.
-	r := Subversion{
-		Remote: remote,
-		Path:   "/tmp/svn/test",
-	}
-	r.checkout()
-}