Merge commit 'refs/pull/53/head' of github.com:libgit2/git2go

On top: fix git_buf handling and rename signature

This fixes #57, #54.

Conflicts:
	git.go
	reference.go
	repository.go
	submodule.go

6 files changed, 85 insertions, 32 deletions

diff --git a/commit.go b/commit.go
index 498669e..0c64c76 100644
--- a/commit.go
+++ b/commit.go
@@ -94,6 +94,11 @@ func (v *Signature) Offset() int {
 }
 
 func (sig *Signature) toC() *C.git_signature {
+
+	if sig == nil {
+		return nil
+	}
+
 	var out *C.git_signature
 
 	name := C.CString(sig.Name)
diff --git a/git.go b/git.go
index 28196c8..72ea33e 100644
--- a/git.go
+++ b/git.go
@@ -93,7 +93,7 @@ func (oid *Oid) Equal(oid2 *Oid) bool {
 }
 
 func (oid *Oid) IsZero() bool {
-	for _, a := range(oid.bytes) {
+	for _, a := range oid.bytes {
 		if a != '0' {
 			return false
 		}
@@ -131,10 +131,10 @@ func ShortenOids(ids []*Oid, minlen int) (int, error) {
 
 type GitError struct {
 	Message string
-	Code int
+	Code    int
 }
 
-func (e GitError) Error() string{
+func (e GitError) Error() string {
 	return e.Message
 }
 
@@ -147,14 +147,14 @@ func LastError() error {
 }
 
 func cbool(b bool) C.int {
-	if (b) {
+	if b {
 		return C.int(1)
 	}
 	return C.int(0)
 }
 
 func ucbool(b bool) C.uint {
-	if (b) {
+	if b {
 		return C.uint(1)
 	}
 	return C.uint(0)
@@ -167,17 +167,16 @@ func Discover(start string, across_fs bool, ceiling_dirs []string) (string, erro
 	cstart := C.CString(start)
 	defer C.free(unsafe.Pointer(cstart))
 
-	retpath := (*C.char)(C.malloc(C.GIT_PATH_MAX))
-	defer C.free(unsafe.Pointer(retpath))
+	var buf C.git_buf
+	defer C.git_buf_free(&buf)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	r := C.git_repository_discover(retpath, C.GIT_PATH_MAX, cstart, cbool(across_fs), ceildirs)
-
-	if r == 0 {
-		return C.GoString(retpath), nil
+	ret := C.git_repository_discover(&buf, cstart, cbool(across_fs), ceildirs)
+	if ret < 0 {
+		return "", LastError()
 	}
 
-	return "", LastError()
+	return C.GoString(buf.ptr), nil
 }
diff --git a/reference.go b/reference.go
index 8e33354..1ec1fb3 100644
--- a/reference.go
+++ b/reference.go
@@ -11,6 +11,7 @@ import (
 )
 
 type ReferenceType int
+
 const (
 	ReferenceSymbolic ReferenceType = C.GIT_REF_SYMBOLIC
 	ReferenceOid                    = C.GIT_REF_OID
@@ -27,15 +28,22 @@ func newReferenceFromC(ptr *C.git_reference) *Reference {
 	return ref
 }
 
-func (v *Reference) SetSymbolicTarget(target string) (*Reference, error) {
+func (v *Reference) SetSymbolicTarget(target string, sig *Signature, msg string) (*Reference, error) {
 	var ptr *C.git_reference
+
 	ctarget := C.CString(target)
 	defer C.free(unsafe.Pointer(ctarget))
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_reference_symbolic_set_target(&ptr, v.ptr, ctarget)
+	csig := sig.toC()
+	defer C.free(unsafe.Pointer(csig))
+
+	cmsg := C.CString(msg)
+	defer C.free(unsafe.Pointer(cmsg))
+
+	ret := C.git_reference_symbolic_set_target(&ptr, v.ptr, ctarget, csig, cmsg)
 	if ret < 0 {
 		return nil, LastError()
 	}
@@ -43,13 +51,19 @@ func (v *Reference) SetSymbolicTarget(target string) (*Reference, error) {
 	return newReferenceFromC(ptr), nil
 }
 
-func (v *Reference) SetTarget(target *Oid) (*Reference, error) {
+func (v *Reference) SetTarget(target *Oid, sig *Signature, msg string) (*Reference, error) {
 	var ptr *C.git_reference
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_reference_set_target(&ptr, v.ptr, target.toC())
+	csig := sig.toC()
+	defer C.free(unsafe.Pointer(csig))
+
+	cmsg := C.CString(msg)
+	defer C.free(unsafe.Pointer(cmsg))
+
+	ret := C.git_reference_set_target(&ptr, v.ptr, target.toC(), csig, cmsg)
 	if ret < 0 {
 		return nil, LastError()
 	}
@@ -71,15 +85,21 @@ func (v *Reference) Resolve() (*Reference, error) {
 	return newReferenceFromC(ptr), nil
 }
 
-func (v *Reference) Rename(name string, force bool) (*Reference, error) {
+func (v *Reference) Rename(name string, force bool, sig *Signature, msg string) (*Reference, error) {
 	var ptr *C.git_reference
 	cname := C.CString(name)
 	defer C.free(unsafe.Pointer(cname))
 
+	csig := sig.toC()
+	defer C.free(unsafe.Pointer(csig))
+
+	cmsg := C.CString(msg)
+	defer C.free(unsafe.Pointer(cmsg))
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_reference_rename(&ptr, v.ptr, cname, cbool(force))
+	ret := C.git_reference_rename(&ptr, v.ptr, cname, cbool(force), csig, cmsg)
 
 	if ret < 0 {
 		return nil, LastError()
diff --git a/reference_test.go b/reference_test.go
index f955a2c..156960a 100644
--- a/reference_test.go
+++ b/reference_test.go
@@ -14,7 +14,14 @@ func TestRefModification(t *testing.T) {
 
 	commitId, treeId := seedTestRepo(t, repo)
 
-	_, err := repo.CreateReference("refs/tags/tree", treeId, true)
+	loc, err := time.LoadLocation("Europe/Berlin")
+	checkFatal(t, err)
+	sig := &Signature{
+		Name:  "Rand Om Hacker",
+		Email: "[email protected]",
+		When:  time.Date(2013, 03, 06, 14, 30, 0, 0, loc),
+	}
+	_, err = repo.CreateReference("refs/tags/tree", treeId, true, sig, "testTreeTag")
 	checkFatal(t, err)
 
 	tag, err := repo.LookupReference("refs/tags/tree")
@@ -45,7 +52,7 @@ func TestRefModification(t *testing.T) {
 		t.Fatalf("Wrong ref target")
 	}
 
-	_, err = tag.Rename("refs/tags/renamed", false)
+	_, err = tag.Rename("refs/tags/renamed", false, nil, "")
 	checkFatal(t, err)
 	tag, err = repo.LookupReference("refs/tags/renamed")
 	checkFatal(t, err)
@@ -78,13 +85,13 @@ func TestIterator(t *testing.T) {
 	commitId, err := repo.CreateCommit("HEAD", sig, sig, message, tree)
 	checkFatal(t, err)
 
-	_, err = repo.CreateReference("refs/heads/one", commitId, true)
+	_, err = repo.CreateReference("refs/heads/one", commitId, true, sig, "headOne")
 	checkFatal(t, err)
 
-	_, err = repo.CreateReference("refs/heads/two", commitId, true)
+	_, err = repo.CreateReference("refs/heads/two", commitId, true, sig, "headTwo")
 	checkFatal(t, err)
 
-	_, err = repo.CreateReference("refs/heads/three", commitId, true)
+	_, err = repo.CreateReference("refs/heads/three", commitId, true, sig, "headThree")
 	checkFatal(t, err)
 
 	iter, err := repo.NewReferenceIterator()
@@ -108,7 +115,6 @@ func TestIterator(t *testing.T) {
 		t.Fatal("Iteration not over")
 	}
 
-
 	sort.Strings(list)
 	compareStringList(t, expected, list)
 
@@ -129,7 +135,6 @@ func TestIterator(t *testing.T) {
 		t.Fatalf("Wrong number of references returned %v", count)
 	}
 
-
 	// test the channel iteration
 	list = []string{}
 	iter, err = repo.NewReferenceIterator()
diff --git a/repository.go b/repository.go
index 3a9068d..48c2b46 100644
--- a/repository.go
+++ b/repository.go
@@ -146,15 +146,22 @@ func (v *Repository) LookupReference(name string) (*Reference, error) {
 	return newReferenceFromC(ptr), nil
 }
 
-func (v *Repository) CreateReference(name string, oid *Oid, force bool) (*Reference, error) {
+func (v *Repository) CreateReference(name string, oid *Oid, force bool, sig *Signature, msg string) (*Reference, error) {
 	cname := C.CString(name)
 	defer C.free(unsafe.Pointer(cname))
+
+	csig := sig.toC()
+	defer C.free(unsafe.Pointer(csig))
+
+	cmsg := C.CString(msg)
+	defer C.free(unsafe.Pointer(cmsg))
+
 	var ptr *C.git_reference
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_reference_create(&ptr, v.ptr, cname, oid.toC(), cbool(force))
+	ecode := C.git_reference_create(&ptr, v.ptr, cname, oid.toC(), cbool(force), csig, cmsg)
 	if ecode < 0 {
 		return nil, LastError()
 	}
@@ -162,17 +169,25 @@ func (v *Repository) CreateReference(name string, oid *Oid, force bool) (*Refere
 	return newReferenceFromC(ptr), nil
 }
 
-func (v *Repository) CreateSymbolicReference(name, target string, force bool) (*Reference, error) {
+func (v *Repository) CreateSymbolicReference(name, target string, force bool, sig *Signature, msg string) (*Reference, error) {
 	cname := C.CString(name)
 	defer C.free(unsafe.Pointer(cname))
+
 	ctarget := C.CString(target)
 	defer C.free(unsafe.Pointer(ctarget))
+
+	csig := sig.toC()
+	defer C.free(unsafe.Pointer(csig))
+
+	cmsg := C.CString(msg)
+	defer C.free(unsafe.Pointer(cmsg))
+
 	var ptr *C.git_reference
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ecode := C.git_reference_symbolic_create(&ptr, v.ptr, cname, ctarget, cbool(force))
+	ecode := C.git_reference_symbolic_create(&ptr, v.ptr, cname, ctarget, cbool(force), csig, cmsg)
 	if ecode < 0 {
 		return nil, LastError()
 	}
@@ -232,7 +247,7 @@ func (v *Repository) CreateCommit(
 	ret := C.git_commit_create(
 		oid.toC(), v.ptr, cref,
 		authorSig, committerSig,
-		nil, cmsg, tree.ptr, C.int(nparents), parentsarg)
+		nil, cmsg, tree.ptr, C.size_t(nparents), parentsarg)
 
 	if ret < 0 {
 		return nil, LastError()
diff --git a/submodule.go b/submodule.go
index 48ea151..fa1c436 100644
--- a/submodule.go
+++ b/submodule.go
@@ -56,6 +56,14 @@ const (
 	SubmoduleStatusWdUntracked                     = C.GIT_SUBMODULE_STATUS_WD_UNTRACKED
 )
 
+type SubmoduleRecurse int
+
+const (
+	SubmoduleRecurseNo       SubmoduleRecurse = C.GIT_SUBMODULE_RECURSE_NO
+	SubmoduleRecurseYes                       = C.GIT_SUBMODULE_RECURSE_YES
+	SubmoduleRecurseOndemand                  = C.GIT_SUBMODULE_RECURSE_ONDEMAND
+)
+
 func SubmoduleStatusIsUnmodified(status int) bool {
 	o := SubmoduleStatus(status) & ^(SubmoduleStatusInHead | SubmoduleStatusInIndex |
 		SubmoduleStatusInConfig | SubmoduleStatusInWd)
@@ -236,11 +244,12 @@ func (sub *Submodule) FetchRecurseSubmodules() bool {
 	return true
 }
 
-func (sub *Submodule) SetFetchRecurseSubmodules(v bool) error {
+
+func (sub *Submodule) SetFetchRecurseSubmodules(recurse SubmoduleRecurse) error {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_submodule_set_fetch_recurse_submodules(sub.ptr, cbool(v))
+	ret := C.git_submodule_set_fetch_recurse_submodules(sub.ptr, C.git_submodule_recurse_t(recurse))
 	if ret < 0 {
 		return LastError()
 	}