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index.go
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index.go
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package git
/*
#include <git2.h>
extern int _go_git_index_add_all(git_index*, const git_strarray*, unsigned int, void*);
extern int _go_git_index_update_all(git_index*, const git_strarray*, void*);
extern int _go_git_index_remove_all(git_index*, const git_strarray*, void*);
*/
import "C"
import (
"fmt"
"runtime"
"unsafe"
)
type IndexMatchedPathCallback func(string, string) error
type indexMatchedPathCallbackData struct {
callback IndexMatchedPathCallback
errorTarget *error
}
// IndexAddOption is a set of flags for APIs that add files matching pathspec.
type IndexAddOption uint
const (
IndexAddDefault IndexAddOption = C.GIT_INDEX_ADD_DEFAULT
IndexAddForce IndexAddOption = C.GIT_INDEX_ADD_FORCE
IndexAddDisablePathspecMatch IndexAddOption = C.GIT_INDEX_ADD_DISABLE_PATHSPEC_MATCH
IndexAddCheckPathspec IndexAddOption = C.GIT_INDEX_ADD_CHECK_PATHSPEC
)
// IndexStageState indicates the state of the git index.
type IndexStageState int
const (
// IndexStageAny matches any index stage.
//
// Some index APIs take a stage to match; pass this value to match
// any entry matching the path regardless of stage.
IndexStageAny IndexStageState = C.GIT_INDEX_STAGE_ANY
// IndexStageNormal is a normal staged file in the index.
IndexStageNormal IndexStageState = C.GIT_INDEX_STAGE_NORMAL
// IndexStageAncestor is the ancestor side of a conflict.
IndexStageAncestor IndexStageState = C.GIT_INDEX_STAGE_ANCESTOR
// IndexStageOurs is the "ours" side of a conflict.
IndexStageOurs IndexStageState = C.GIT_INDEX_STAGE_OURS
// IndexStageTheirs is the "theirs" side of a conflict.
IndexStageTheirs IndexStageState = C.GIT_INDEX_STAGE_THEIRS
)
type Index struct {
doNotCompare
ptr *C.git_index
repo *Repository
}
type IndexTime struct {
Seconds int32
Nanoseconds uint32
}
type IndexEntry struct {
Ctime IndexTime
Mtime IndexTime
Mode Filemode
Uid uint32
Gid uint32
Size uint32
Id *Oid
Path string
}
func newIndexEntryFromC(entry *C.git_index_entry) *IndexEntry {
if entry == nil {
return nil
}
return &IndexEntry{
IndexTime{int32(entry.ctime.seconds), uint32(entry.ctime.nanoseconds)},
IndexTime{int32(entry.mtime.seconds), uint32(entry.mtime.nanoseconds)},
Filemode(entry.mode),
uint32(entry.uid),
uint32(entry.gid),
uint32(entry.file_size),
newOidFromC(&entry.id),
C.GoString(entry.path),
}
}
func populateCIndexEntry(source *IndexEntry, dest *C.git_index_entry) {
dest.ctime.seconds = C.int32_t(source.Ctime.Seconds)
dest.ctime.nanoseconds = C.uint32_t(source.Ctime.Nanoseconds)
dest.mtime.seconds = C.int32_t(source.Mtime.Seconds)
dest.mtime.nanoseconds = C.uint32_t(source.Mtime.Nanoseconds)
dest.mode = C.uint32_t(source.Mode)
dest.uid = C.uint32_t(source.Uid)
dest.gid = C.uint32_t(source.Gid)
dest.file_size = C.uint32_t(source.Size)
if source.Id != nil {
dest.id = *source.Id.toC()
}
dest.path = C.CString(source.Path)
}
func freeCIndexEntry(entry *C.git_index_entry) {
C.free(unsafe.Pointer(entry.path))
}
func newIndexFromC(ptr *C.git_index, repo *Repository) *Index {
idx := &Index{ptr: ptr, repo: repo}
runtime.SetFinalizer(idx, (*Index).Free)
return idx
}
// NewIndex allocates a new index. It won't be associated with any
// file on the filesystem or repository
func NewIndex() (*Index, error) {
var ptr *C.git_index
runtime.LockOSThread()
defer runtime.UnlockOSThread()
if err := C.git_index_new(&ptr); err < 0 {
return nil, MakeGitError(err)
}
return newIndexFromC(ptr, nil), nil
}
// OpenIndex creates a new index at the given path. If the file does
// not exist it will be created when Write() is called.
func OpenIndex(path string) (*Index, error) {
var ptr *C.git_index
var cpath = C.CString(path)
defer C.free(unsafe.Pointer(cpath))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
if err := C.git_index_open(&ptr, cpath); err < 0 {
return nil, MakeGitError(err)
}
return newIndexFromC(ptr, nil), nil
}
// Path returns the index' path on disk or an empty string if it
// exists only in memory.
func (v *Index) Path() string {
ret := C.GoString(C.git_index_path(v.ptr))
runtime.KeepAlive(v)
return ret
}
// Clear clears the index object in memory; changes must be explicitly
// written to disk for them to take effect persistently
func (v *Index) Clear() error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
err := C.git_index_clear(v.ptr)
runtime.KeepAlive(v)
if err < 0 {
return MakeGitError(err)
}
return nil
}
// Add adds or replaces the given entry to the index, making a copy of
// the data
func (v *Index) Add(entry *IndexEntry) error {
var centry C.git_index_entry
populateCIndexEntry(entry, ¢ry)
defer freeCIndexEntry(¢ry)
runtime.LockOSThread()
defer runtime.UnlockOSThread()
err := C.git_index_add(v.ptr, ¢ry)
runtime.KeepAlive(v)
if err < 0 {
return MakeGitError(err)
}
return nil
}
func (v *Index) AddByPath(path string) error {
cstr := C.CString(path)
defer C.free(unsafe.Pointer(cstr))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_index_add_bypath(v.ptr, cstr)
runtime.KeepAlive(v)
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
// AddFromBuffer adds or replaces an index entry from a buffer in memory
func (v *Index) AddFromBuffer(entry *IndexEntry, buffer []byte) error {
var centry C.git_index_entry
populateCIndexEntry(entry, ¢ry)
defer freeCIndexEntry(¢ry)
var cbuffer unsafe.Pointer
if len(buffer) > 0 {
cbuffer = unsafe.Pointer(&buffer[0])
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
if err := C.git_index_add_from_buffer(v.ptr, ¢ry, cbuffer, C.size_t(len(buffer))); err < 0 {
return MakeGitError(err)
}
return nil
}
func (v *Index) AddAll(pathspecs []string, flags IndexAddOption, callback IndexMatchedPathCallback) error {
cpathspecs := C.git_strarray{}
cpathspecs.count = C.size_t(len(pathspecs))
cpathspecs.strings = makeCStringsFromStrings(pathspecs)
defer freeStrarray(&cpathspecs)
var err error
data := indexMatchedPathCallbackData{
callback: callback,
errorTarget: &err,
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var handle unsafe.Pointer
if callback != nil {
handle = pointerHandles.Track(&data)
defer pointerHandles.Untrack(handle)
}
ret := C._go_git_index_add_all(
v.ptr,
&cpathspecs,
C.uint(flags),
handle,
)
runtime.KeepAlive(v)
if ret == C.int(ErrorCodeUser) && err != nil {
return err
}
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
func (v *Index) UpdateAll(pathspecs []string, callback IndexMatchedPathCallback) error {
cpathspecs := C.git_strarray{}
cpathspecs.count = C.size_t(len(pathspecs))
cpathspecs.strings = makeCStringsFromStrings(pathspecs)
defer freeStrarray(&cpathspecs)
var err error
data := indexMatchedPathCallbackData{
callback: callback,
errorTarget: &err,
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var handle unsafe.Pointer
if callback != nil {
handle = pointerHandles.Track(&data)
defer pointerHandles.Untrack(handle)
}
ret := C._go_git_index_update_all(
v.ptr,
&cpathspecs,
handle,
)
runtime.KeepAlive(v)
if ret == C.int(ErrorCodeUser) && err != nil {
return err
}
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
func (v *Index) RemoveAll(pathspecs []string, callback IndexMatchedPathCallback) error {
cpathspecs := C.git_strarray{}
cpathspecs.count = C.size_t(len(pathspecs))
cpathspecs.strings = makeCStringsFromStrings(pathspecs)
defer freeStrarray(&cpathspecs)
var err error
data := indexMatchedPathCallbackData{
callback: callback,
errorTarget: &err,
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var handle unsafe.Pointer
if callback != nil {
handle = pointerHandles.Track(&data)
defer pointerHandles.Untrack(handle)
}
ret := C._go_git_index_remove_all(
v.ptr,
&cpathspecs,
handle,
)
runtime.KeepAlive(v)
if ret == C.int(ErrorCodeUser) && err != nil {
return err
}
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
//export indexMatchedPathCallback
func indexMatchedPathCallback(cPath, cMatchedPathspec *C.char, payload unsafe.Pointer) C.int {
data, ok := pointerHandles.Get(payload).(*indexMatchedPathCallbackData)
if !ok {
panic("invalid matched path callback")
}
err := data.callback(C.GoString(cPath), C.GoString(cMatchedPathspec))
if err != nil {
*data.errorTarget = err
return C.int(ErrorCodeUser)
}
return C.int(ErrorCodeOK)
}
func (v *Index) RemoveByPath(path string) error {
cstr := C.CString(path)
defer C.free(unsafe.Pointer(cstr))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_index_remove_bypath(v.ptr, cstr)
runtime.KeepAlive(v)
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
// RemoveDirectory removes all entries from the index under a given directory.
func (v *Index) RemoveDirectory(dir string, stage int) error {
cstr := C.CString(dir)
defer C.free(unsafe.Pointer(cstr))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_index_remove_directory(v.ptr, cstr, C.int(stage))
runtime.KeepAlive(v)
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
func (v *Index) WriteTreeTo(repo *Repository) (*Oid, error) {
oid := new(Oid)
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_index_write_tree_to(oid.toC(), v.ptr, repo.ptr)
runtime.KeepAlive(v)
runtime.KeepAlive(repo)
if ret < 0 {
return nil, MakeGitError(ret)
}
return oid, nil
}
// ReadTree replaces the contents of the index with those of the given
// tree
func (v *Index) ReadTree(tree *Tree) error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_index_read_tree(v.ptr, tree.cast_ptr)
runtime.KeepAlive(v)
runtime.KeepAlive(tree)
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
func (v *Index) WriteTree() (*Oid, error) {
oid := new(Oid)
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_index_write_tree(oid.toC(), v.ptr)
runtime.KeepAlive(v)
if ret < 0 {
return nil, MakeGitError(ret)
}
return oid, nil
}
func (v *Index) Write() error {
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ret := C.git_index_write(v.ptr)
runtime.KeepAlive(v)
if ret < 0 {
return MakeGitError(ret)
}
return nil
}
func (v *Index) Free() {
runtime.SetFinalizer(v, nil)
C.git_index_free(v.ptr)
}
func (v *Index) EntryCount() uint {
ret := uint(C.git_index_entrycount(v.ptr))
runtime.KeepAlive(v)
return ret
}
func (v *Index) EntryByIndex(index uint) (*IndexEntry, error) {
centry := C.git_index_get_byindex(v.ptr, C.size_t(index))
if centry == nil {
return nil, fmt.Errorf("Index out of Bounds")
}
ret := newIndexEntryFromC(centry)
runtime.KeepAlive(v)
return ret, nil
}
func (v *Index) EntryByPath(path string, stage int) (*IndexEntry, error) {
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
centry := C.git_index_get_bypath(v.ptr, cpath, C.int(stage))
if centry == nil {
return nil, MakeGitError(C.int(ErrorCodeNotFound))
}
ret := newIndexEntryFromC(centry)
runtime.KeepAlive(v)
return ret, nil
}
func (v *Index) Find(path string) (uint, error) {
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var pos C.size_t
ret := C.git_index_find(&pos, v.ptr, cpath)
runtime.KeepAlive(v)
if ret < 0 {
return uint(0), MakeGitError(ret)
}
return uint(pos), nil
}
func (v *Index) FindPrefix(prefix string) (uint, error) {
cprefix := C.CString(prefix)
defer C.free(unsafe.Pointer(cprefix))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var pos C.size_t
ret := C.git_index_find_prefix(&pos, v.ptr, cprefix)
runtime.KeepAlive(v)
if ret < 0 {
return uint(0), MakeGitError(ret)
}
return uint(pos), nil
}
func (v *Index) HasConflicts() bool {
ret := C.git_index_has_conflicts(v.ptr) != 0
runtime.KeepAlive(v)
return ret
}
// FIXME: this might return an error
func (v *Index) CleanupConflicts() {
C.git_index_conflict_cleanup(v.ptr)
runtime.KeepAlive(v)
}
func (v *Index) AddConflict(ancestor *IndexEntry, our *IndexEntry, their *IndexEntry) error {
var cancestor *C.git_index_entry
var cour *C.git_index_entry
var ctheir *C.git_index_entry
if ancestor != nil {
cancestor = &C.git_index_entry{}
populateCIndexEntry(ancestor, cancestor)
defer freeCIndexEntry(cancestor)
}
if our != nil {
cour = &C.git_index_entry{}
populateCIndexEntry(our, cour)
defer freeCIndexEntry(cour)
}
if their != nil {
ctheir = &C.git_index_entry{}
populateCIndexEntry(their, ctheir)
defer freeCIndexEntry(ctheir)
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_index_conflict_add(v.ptr, cancestor, cour, ctheir)
runtime.KeepAlive(v)
runtime.KeepAlive(ancestor)
runtime.KeepAlive(our)
runtime.KeepAlive(their)
if ecode < 0 {
return MakeGitError(ecode)
}
return nil
}
type IndexConflict struct {
Ancestor *IndexEntry
Our *IndexEntry
Their *IndexEntry
}
func (v *Index) Conflict(path string) (IndexConflict, error) {
var cancestor *C.git_index_entry
var cour *C.git_index_entry
var ctheir *C.git_index_entry
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_index_conflict_get(&cancestor, &cour, &ctheir, v.ptr, cpath)
if ecode < 0 {
return IndexConflict{}, MakeGitError(ecode)
}
ret := IndexConflict{
Ancestor: newIndexEntryFromC(cancestor),
Our: newIndexEntryFromC(cour),
Their: newIndexEntryFromC(ctheir),
}
runtime.KeepAlive(v)
return ret, nil
}
// deprecated: You should use `Index.Conflict()` instead.
func (v *Index) GetConflict(path string) (IndexConflict, error) {
return v.Conflict(path)
}
func (v *Index) RemoveConflict(path string) error {
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_index_conflict_remove(v.ptr, cpath)
runtime.KeepAlive(v)
if ecode < 0 {
return MakeGitError(ecode)
}
return nil
}
type IndexConflictIterator struct {
doNotCompare
ptr *C.git_index_conflict_iterator
index *Index
}
func newIndexConflictIteratorFromC(index *Index, ptr *C.git_index_conflict_iterator) *IndexConflictIterator {
i := &IndexConflictIterator{ptr: ptr, index: index}
runtime.SetFinalizer(i, (*IndexConflictIterator).Free)
return i
}
func (v *IndexConflictIterator) Index() *Index {
return v.index
}
func (v *IndexConflictIterator) Free() {
runtime.SetFinalizer(v, nil)
C.git_index_conflict_iterator_free(v.ptr)
}
func (v *Index) ConflictIterator() (*IndexConflictIterator, error) {
var i *C.git_index_conflict_iterator
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_index_conflict_iterator_new(&i, v.ptr)
if ecode < 0 {
return nil, MakeGitError(ecode)
}
return newIndexConflictIteratorFromC(v, i), nil
}
func (v *IndexConflictIterator) Next() (IndexConflict, error) {
var cancestor *C.git_index_entry
var cour *C.git_index_entry
var ctheir *C.git_index_entry
runtime.LockOSThread()
defer runtime.UnlockOSThread()
ecode := C.git_index_conflict_next(&cancestor, &cour, &ctheir, v.ptr)
if ecode < 0 {
return IndexConflict{}, MakeGitError(ecode)
}
ret := IndexConflict{
Ancestor: newIndexEntryFromC(cancestor),
Our: newIndexEntryFromC(cour),
Their: newIndexEntryFromC(ctheir),
}
runtime.KeepAlive(v)
return ret, nil
}