forked from libgit2/git2go
/
reference.go
303 lines (238 loc) · 6.51 KB
/
reference.go
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package git
/*
#include <git2.h>
#include <git2/errors.h>
*/
import "C"
import (
"runtime"
"unsafe"
)
type ReferenceType int
const (
ReferenceSymbolic ReferenceType = C.GIT_REF_SYMBOLIC
ReferenceOid = C.GIT_REF_OID
)
type Reference struct {
ptr *C.git_reference
}
func newReferenceFromC(ptr *C.git_reference) *Reference {
ref := &Reference{ptr}
runtime.SetFinalizer(ref, (*Reference).Free)
return ref
}
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()
csig := sig.toC()
defer C.free(unsafe.Pointer(csig))
var cmsg *C.char
if msg == "" {
cmsg = nil
} else {
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, MakeGitError(ret)
}
return newReferenceFromC(ptr), nil
}
func (v *Reference) SetTarget(target *Oid, sig *Signature, msg string) (*Reference, error) {
var ptr *C.git_reference
runtime.LockOSThread()
defer runtime.UnlockOSThread()
csig := sig.toC()
defer C.free(unsafe.Pointer(csig))
var cmsg *C.char
if msg == "" {
cmsg = nil
} else {
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, MakeGitError(ret)
}
return newReferenceFromC(ptr), nil
}
func (v *Reference) Resolve() (*Reference, error) {
var ptr *C.git_reference
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_resolve(&ptr, v.ptr)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr), nil
}
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))
var cmsg *C.char
if msg == "" {
cmsg = nil
} else {
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), csig, cmsg)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr), nil
}
func (v *Reference) Target() *Oid {
return newOidFromC(C.git_reference_target(v.ptr))
}
func (v *Reference) SymbolicTarget() string {
cstr := C.git_reference_symbolic_target(v.ptr)
if cstr == nil {
return ""
}
return C.GoString(cstr)
}
func (v *Reference) Delete() error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_delete(v.ptr)
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
// Cmp compares both references, retursn 0 on equality, otherwise a
// stable sorting.
func (v *Reference) Cmp(ref2 *Reference) int {
return int(C.git_reference_cmp(v.ptr, ref2.ptr))
}
// Shorthand returns a "human-readable" short reference name
func (v *Reference) Shorthand() string {
return C.GoString(C.git_reference_shorthand(v.ptr))
}
func (v *Reference) Name() string {
return C.GoString(C.git_reference_name(v.ptr))
}
func (v *Reference) Type() ReferenceType {
return ReferenceType(C.git_reference_type(v.ptr))
}
func (v *Reference) IsBranch() bool {
return C.git_reference_is_branch(v.ptr) == 1
}
func (v *Reference) IsRemote() bool {
return C.git_reference_is_remote(v.ptr) == 1
}
func (v *Reference) IsTag() bool {
return C.git_reference_is_tag(v.ptr) == 1
}
func (v *Reference) Free() {
runtime.SetFinalizer(v, nil)
C.git_reference_free(v.ptr)
}
type ReferenceIterator struct {
ptr *C.git_reference_iterator
repo *Repository
}
// NewReferenceIterator creates a new iterator over reference names
func (repo *Repository) NewReferenceIterator() (*ReferenceIterator, error) {
var ptr *C.git_reference_iterator
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_iterator_new(&ptr, repo.ptr)
if ret < 0 {
return nil, MakeGitError(ret)
}
iter := &ReferenceIterator{repo: repo, ptr: ptr}
runtime.SetFinalizer(iter, (*ReferenceIterator).Free)
return iter, nil
}
// NewReferenceIteratorGlob creates an iterator over reference names
// that match the speicified glob. The glob is of the usual fnmatch
// type.
func (repo *Repository) NewReferenceIteratorGlob(glob string) (*ReferenceIterator, error) {
cstr := C.CString(glob)
defer C.free(unsafe.Pointer(cstr))
var ptr *C.git_reference_iterator
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_iterator_glob_new(&ptr, repo.ptr, cstr)
if ret < 0 {
return nil, MakeGitError(ret)
}
iter := &ReferenceIterator{repo: repo, ptr: ptr}
runtime.SetFinalizer(iter, (*ReferenceIterator).Free)
return iter, nil
}
// NextName retrieves the next reference name. If the iteration is over,
// the returned error is git.ErrIterOver
func (v *ReferenceIterator) NextName() (string, error) {
var ptr *C.char
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_reference_next_name(&ptr, v.ptr)
if ret == ITEROVER {
return "", ErrIterOver
}
if ret < 0 {
return "", MakeGitError(ret)
}
return C.GoString(ptr), nil
}
// Create a channel from the iterator. You can use range on the
// returned channel to iterate over all the references names. The channel
// will be closed in case any error is found.
func (v *ReferenceIterator) NameIter() <-chan string {
ch := make(chan string)
go func() {
defer close(ch)
name, err := v.NextName()
for err == nil {
ch <- name
name, err = v.NextName()
}
}()
return ch
}
// Next retrieves the next reference. If the iterationis over, the
// returned error is git.ErrIterOver
func (v *ReferenceIterator) Next() (*Reference, error) {
var ptr *C.git_reference
ret := C.git_reference_next(&ptr, v.ptr)
if ret == ITEROVER {
return nil, ErrIterOver
}
if ret < 0 {
return nil, MakeGitError(ret)
}
return newReferenceFromC(ptr), nil
}
// Create a channel from the iterator. You can use range on the
// returned channel to iterate over all the references names. The channel
// will be closed in case any error is found.
func (v *ReferenceIterator) Iter() <-chan *Reference {
ch := make(chan *Reference)
go func() {
defer close(ch)
name, err := v.Next()
for err == nil {
ch <- name
name, err = v.Next()
}
}()
return ch
}
// Free the reference iterator
func (v *ReferenceIterator) Free() {
runtime.SetFinalizer(v, nil)
C.git_reference_iterator_free(v.ptr)
}