README.md

@@ -8,7 +8,7 @@ Go bindings for [libgit2](http://libgit2.github.com/). The `master` branch follo
 Installing
 ----------
 
-This project wraps the functionality provided by libgit2. If you're using a stable version, install it to your system via your system's package manaager and then install git2go as usual.
+This project wraps the functionality provided by libgit2. If you're using a stable version, install it to your system via your system's package manager and then install git2go as usual.
 
 Otherwise (`next` which tracks an unstable version), we need to build libgit2 as well. In order to build it, you need `cmake`, `pkg-config` and a C compiler. You will also need the development packages for OpenSSL and LibSSH2 installed if you want libgit2 to support HTTPS and SSH respectively.
 

blame.go

@@ -58,8 +58,8 @@ func (v *Repository) BlameFile(path string, opts *BlameOptions) (*Blame, error)
 			version:              C.GIT_BLAME_OPTIONS_VERSION,
 			flags:                C.uint32_t(opts.Flags),
 			min_match_characters: C.uint16_t(opts.MinMatchCharacters),
-			min_line:             C.uint32_t(opts.MinLine),
-			max_line:             C.uint32_t(opts.MaxLine),
+			min_line:             C.size_t(opts.MinLine),
+			max_line:             C.size_t(opts.MaxLine),
 		}
 		if opts.NewestCommit != nil {
 			copts.newest_commit = *opts.NewestCommit.toC()
@@ -100,7 +100,7 @@ func (blame *Blame) HunkByIndex(index int) (BlameHunk, error) {
 }
 
 func (blame *Blame) HunkByLine(lineno int) (BlameHunk, error) {
-	ptr := C.git_blame_get_hunk_byline(blame.ptr, C.uint32_t(lineno))
+	ptr := C.git_blame_get_hunk_byline(blame.ptr, C.size_t(lineno))
 	if ptr == nil {
 		return BlameHunk{}, ErrInvalid
 	}

blob.go

@@ -84,7 +84,7 @@ func (repo *Repository) CreateBlobFromChunks(hintPath string, callback BlobChunk
 
 	var chintPath *C.char = nil
 	if len(hintPath) > 0 {
-		C.CString(hintPath)
+		chintPath = C.CString(hintPath)
 		defer C.free(unsafe.Pointer(chintPath))
 	}
 	oid := C.git_oid{}

checkout.go

@@ -45,6 +45,7 @@ type CheckoutOpts struct {
 	FileOpenFlags   int              // Default is O_CREAT | O_TRUNC | O_WRONLY
 	TargetDirectory string           // Alternative checkout path to workdir
 	Paths           []string
+	Baseline        *Tree
 }
 
 func checkoutOptionsFromC(c *C.git_checkout_options) CheckoutOpts {
@@ -90,6 +91,10 @@ func populateCheckoutOpts(ptr *C.git_checkout_options, opts *CheckoutOpts) *C.gi
 		ptr.paths.count = C.size_t(len(opts.Paths))
 	}
 
+	if opts.Baseline != nil {
+		ptr.baseline = opts.Baseline.cast_ptr
+	}
+
 	return ptr
 }
 

config.go

@@ -12,6 +12,9 @@ import (
 type ConfigLevel int
 
 const (
+	// System-wide on Windows, for compatibility with portable git
+	ConfigLevelProgramdata ConfigLevel = C.GIT_CONFIG_LEVEL_PROGRAMDATA
+
 	// System-wide configuration file; /etc/gitconfig on Linux systems
 	ConfigLevelSystem ConfigLevel = C.GIT_CONFIG_LEVEL_SYSTEM
 
@@ -115,18 +118,20 @@ func (c *Config) LookupInt64(name string) (int64, error) {
 }
 
 func (c *Config) LookupString(name string) (string, error) {
-	var ptr *C.char
 	cname := C.CString(name)
 	defer C.free(unsafe.Pointer(cname))
 
+	valBuf := C.git_buf{}
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	if ret := C.git_config_get_string(&ptr, c.ptr, cname); ret < 0 {
+	if ret := C.git_config_get_string_buf(&valBuf, c.ptr, cname); ret < 0 {
 		return "", MakeGitError(ret)
 	}
+	defer C.git_buf_free(&valBuf)
 
-	return C.GoString(ptr), nil
+	return C.GoString(valBuf.ptr), nil
 }
 
 func (c *Config) LookupBool(name string) (bool, error) {
@@ -410,3 +415,21 @@ func ConfigFindXDG() (string, error) {
 
 	return C.GoString(buf.ptr), nil
 }
+
+// ConfigFindProgramdata locate the path to the configuration file in ProgramData.
+//
+// Look for the file in %PROGRAMDATA%\Git\config used by portable git.
+func ConfigFindProgramdata() (string, error) {
+	var buf C.git_buf
+	defer C.git_buf_free(&buf)
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_config_find_programdata(&buf)
+	if ret < 0 {
+		return "", MakeGitError(ret)
+	}
+
+	return C.GoString(buf.ptr), nil
+}

config_test.go

@@ -0,0 +1,108 @@
+package git
+
+import (
+	"os"
+	"testing"
+)
+
+var tempConfig = "./temp.gitconfig"
+
+func setupConfig() (*Config, error) {
+	var (
+		c   *Config
+		err error
+	)
+
+	c, err = OpenOndisk(nil, tempConfig)
+	if err != nil {
+		return nil, err
+	}
+
+	err = c.SetString("foo.bar", "baz")
+	if err != nil {
+		return nil, err
+	}
+	err = c.SetBool("foo.bool", true)
+	if err != nil {
+		return nil, err
+	}
+	err = c.SetInt32("foo.int32", 32)
+	if err != nil {
+		return nil, err
+	}
+	err = c.SetInt64("foo.int64", 64)
+	if err != nil {
+		return nil, err
+	}
+
+	return c, err
+}
+
+func cleanupConfig() {
+	os.Remove(tempConfig)
+}
+
+type TestRunner func(*Config, *testing.T)
+
+var tests = []TestRunner{
+	// LookupString
+	func(c *Config, t *testing.T) {
+		val, err := c.LookupString("foo.bar")
+		if err != nil {
+			t.Errorf("Got LookupString error: '%v', expected none\n", err)
+		}
+		if val != "baz" {
+			t.Errorf("Got '%s' from LookupString, expected 'bar'\n", val)
+		}
+	},
+	// LookupBool
+	func(c *Config, t *testing.T) {
+		val, err := c.LookupBool("foo.bool")
+		if err != nil {
+			t.Errorf("Got LookupBool error: '%v', expected none\n", err)
+		}
+		if !val {
+			t.Errorf("Got %b from LookupBool, expected 'false'\n", val)
+		}
+	},
+	// LookupInt32
+	func(c *Config, t *testing.T) {
+		val, err := c.LookupInt32("foo.int32")
+		if err != nil {
+			t.Errorf("Got LookupInt32 error: '%v', expected none\n", err)
+		}
+		if val != 32 {
+			t.Errorf("Got %v, expected 32\n", val)
+		}
+	},
+	// LookupInt64
+	func(c *Config, t *testing.T) {
+		val, err := c.LookupInt64("foo.int64")
+		if err != nil {
+			t.Errorf("Got LookupInt64 error: '%v', expected none\n", err)
+		}
+		if val != 64 {
+			t.Errorf("Got %v, expected 64\n", val)
+		}
+	},
+}
+
+func TestConfigLookups(t *testing.T) {
+	var (
+		err error
+		c   *Config
+	)
+
+	c, err = setupConfig()
+	defer cleanupConfig()
+
+	if err != nil {
+		t.Errorf("Setup error: '%v'. Expected none\n", err)
+		return
+	}
+	defer c.Free()
+
+	for _, test := range tests {
+		test(c, t)
+	}
+}

diff.go

@@ -550,7 +550,7 @@ func diffOptionsToC(opts *DiffOptions) (copts *C.git_diff_options, notifyData *d
 
 		if opts.NotifyCallback != nil {
 			C._go_git_setup_diff_notify_callbacks(copts)
-			copts.notify_payload = pointerHandles.Track(notifyData)
+			copts.payload = pointerHandles.Track(notifyData)
 		}
 	}
 	return
@@ -562,8 +562,8 @@ func freeDiffOptions(copts *C.git_diff_options) {
 		freeStrarray(&cpathspec)
 		C.free(unsafe.Pointer(copts.old_prefix))
 		C.free(unsafe.Pointer(copts.new_prefix))
-		if copts.notify_payload != nil {
-			pointerHandles.Untrack(copts.notify_payload)
+		if copts.payload != nil {
+			pointerHandles.Untrack(copts.payload)
 		}
 	}
 }

git.go

@@ -52,6 +52,7 @@ const (
 
 	// No error
 	ErrOk ErrorCode = C.GIT_OK
+
 	// Generic error
 	ErrGeneric ErrorCode = C.GIT_ERROR
 	// Requested object could not be found
@@ -62,10 +63,12 @@ const (
 	ErrAmbigious ErrorCode = C.GIT_EAMBIGUOUS
 	// Output buffer too short to hold data
 	ErrBuffs ErrorCode = C.GIT_EBUFS
+
 	// GIT_EUSER is a special error that is never generated by libgit2
 	// code.  You can return it from a callback (e.g to stop an iteration)
 	// to know that it was generated by the callback and not by libgit2.
 	ErrUser ErrorCode = C.GIT_EUSER
+
 	// Operation not allowed on bare repository
 	ErrBareRepo ErrorCode = C.GIT_EBAREREPO
 	// HEAD refers to branch with no commits
@@ -82,12 +85,27 @@ const (
 	ErrLocked ErrorCode = C.GIT_ELOCKED
 	// Reference value does not match expected
 	ErrModified ErrorCode = C.GIT_EMODIFIED
+	// Authentication failed
+	ErrAuth ErrorCode = C.GIT_EAUTH
+	// Server certificate is invalid
+	ErrCertificate ErrorCode = C.GIT_ECERTIFICATE
+	// Patch/merge has already been applied
+	ErrApplied ErrorCode = C.GIT_EAPPLIED
+	// The requested peel operation is not possible
+	ErrPeel ErrorCode = C.GIT_EPEEL
+	// Unexpected EOF
+	ErrEOF ErrorCode = C.GIT_EEOF
+	// Uncommitted changes in index prevented operation
+	ErrUncommitted ErrorCode = C.GIT_EUNCOMMITTED
+	// The operation is not valid for a directory
+	ErrDirectory ErrorCode = C.GIT_EDIRECTORY
+	// A merge conflict exists and cannot continue
+	ErrMergeConflict ErrorCode = C.GIT_EMERGECONFLICT
+
 	// Internal only
 	ErrPassthrough ErrorCode = C.GIT_PASSTHROUGH
 	// Signals end of iteration with iterator
 	ErrIterOver ErrorCode = C.GIT_ITEROVER
-	// Authentication failed
-	ErrAuth ErrorCode = C.GIT_EAUTH
 )
 
 var (

handles.go

@@ -1,5 +1,9 @@
 package git
 
+/*
+#include <stdlib.h>
+*/
+import "C"
 import (
 	"fmt"
 	"sync"
@@ -9,77 +13,45 @@ import (
 type HandleList struct {
 	sync.RWMutex
 	// stores the Go pointers
-	handles []interface{}
-	// Indicates which indices are in use, and keeps a pointer to slot int variable (the handle)
-	// in the Go world, so that the Go garbage collector does not free it.
-	set map[int]*int
+	handles map[unsafe.Pointer]interface{}
 }
 
 func NewHandleList() *HandleList {
 	return &HandleList{
-		handles: make([]interface{}, 5),
-		set:     make(map[int]*int),
+		handles: make(map[unsafe.Pointer]interface{}),
 	}
 }
 
-// findUnusedSlot finds the smallest-index empty space in our
-// list. You must only run this function while holding a write lock.
-func (v *HandleList) findUnusedSlot() int {
-	for i := 1; i < len(v.handles); i++ {
-		_, isUsed := v.set[i]
-		if !isUsed {
-			return i
-		}
-	}
-
-	// reaching here means we've run out of entries so append and
-	// return the new index, which is equal to the old length.
-	slot := len(v.handles)
-	v.handles = append(v.handles, nil)
-
-	return slot
-}
-
 // Track adds the given pointer to the list of pointers to track and
 // returns a pointer value which can be passed to C as an opaque
 // pointer.
 func (v *HandleList) Track(pointer interface{}) unsafe.Pointer {
+	handle := C.malloc(1)
+
 	v.Lock()
-
-	slot := v.findUnusedSlot()
-	v.handles[slot] = pointer
-	v.set[slot] = &slot // Keep a pointer to slot in Go world, so it's not freed by GC.
-
+	v.handles[handle] = pointer
 	v.Unlock()
 
-	return unsafe.Pointer(&slot)
+	return handle
 }
 
 // Untrack stops tracking the pointer given by the handle
 func (v *HandleList) Untrack(handle unsafe.Pointer) {
-	slot := *(*int)(handle)
-
 	v.Lock()
-
-	v.handles[slot] = nil
-	delete(v.set, slot)
-
+	delete(v.handles, handle)
+	C.free(handle)
 	v.Unlock()
 }
 
 // Get retrieves the pointer from the given handle
 func (v *HandleList) Get(handle unsafe.Pointer) interface{} {
-	slot := *(*int)(handle)
-
 	v.RLock()
+	defer v.RUnlock()
 
-	if _, ok := v.set[slot]; !ok {
+	ptr, ok := v.handles[handle]
+	if !ok {
 		panic(fmt.Sprintf("invalid pointer handle: %p", handle))
 	}
 
-	ptr := v.handles[slot]
-
-	v.RUnlock()
-
 	return ptr
 }

ignore.go

@@ -0,0 +1,51 @@
+package git
+
+/*
+#include <git2.h>
+*/
+import "C"
+import (
+	"runtime"
+	"unsafe"
+)
+
+func (v *Repository) AddIgnoreRule(rules string) error {
+	crules := C.CString(rules)
+	defer C.free(unsafe.Pointer(crules))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_ignore_add_rule(v.ptr, crules)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (v *Repository) ClearInternalIgnoreRules() error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_ignore_clear_internal_rules(v.ptr)
+	if ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (v *Repository) IsPathIgnored(path string) (bool, error) {
+	var ignored C.int
+
+	cpath := C.CString(path)
+	defer C.free(unsafe.Pointer(cpath))
+
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	ret := C.git_ignore_path_is_ignored(&ignored, v.ptr, cpath)
+	if ret < 0 {
+		return false, MakeGitError(ret)
+	}
+	return ignored == 1, nil
+}

index.go

@@ -26,6 +26,24 @@ const (
 	IndexAddCheckPathspec        IndexAddOpts = C.GIT_INDEX_ADD_CHECK_PATHSPEC
 )
 
+type IndexStageOpts 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 IndexStageOpts = C.GIT_INDEX_STAGE_ANY
+	// IndexStageNormal is a normal staged file in the index.
+	IndexStageNormal IndexStageOpts = C.GIT_INDEX_STAGE_NORMAL
+	// IndexStageAncestor is the ancestor side of a conflict.
+	IndexStageAncestor IndexStageOpts = C.GIT_INDEX_STAGE_ANCESTOR
+	// IndexStageOurs is the "ours" side of a conflict.
+	IndexStageOurs IndexStageOpts = C.GIT_INDEX_STAGE_OURS
+	// IndexStageTheirs is the "theirs" side of a conflict.
+	IndexStageTheirs IndexStageOpts = C.GIT_INDEX_STAGE_THEIRS
+)
+
 type Index struct {
 	ptr *C.git_index
 }
@@ -97,7 +115,7 @@ func NewIndex() (*Index, error) {
 		return nil, MakeGitError(err)
 	}
 
-	return &Index{ptr: ptr}, nil
+	return newIndexFromC(ptr), nil
 }
 
 // OpenIndex creates a new index at the given path. If the file does
@@ -115,7 +133,7 @@ func OpenIndex(path string) (*Index, error) {
 		return nil, MakeGitError(err)
 	}
 
-	return &Index{ptr: ptr}, nil
+	return newIndexFromC(ptr), nil
 }
 
 // Path returns the index' path on disk or an empty string if it
@@ -331,6 +349,50 @@ func (v *Index) EntryByIndex(index uint) (*IndexEntry, error) {
 	return newIndexEntryFromC(centry), 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.GIT_ENOTFOUND)
+	}
+	return newIndexEntryFromC(centry), 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)
+	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)
+	if ret < 0 {
+		return uint(0), MakeGitError(ret)
+	}
+	return uint(pos), nil
+}
+
 func (v *Index) HasConflicts() bool {
 	return C.git_index_has_conflicts(v.ptr) != 0
 }

merge.go

@@ -6,6 +6,7 @@ package git
 extern git_annotated_commit** _go_git_make_merge_head_array(size_t len);
 extern void _go_git_annotated_commit_array_set(git_annotated_commit** array, git_annotated_commit* ptr, size_t n);
 extern git_annotated_commit* _go_git_annotated_commit_array_get(git_annotated_commit** array, size_t n);
+extern int _go_git_merge_file(git_merge_file_result*, char*, size_t, char*, unsigned int, char*, size_t, char*, unsigned int, char*, size_t, char*, unsigned int, git_merge_file_options*);
 
 */
 import "C"
@@ -81,7 +82,14 @@ func (r *Repository) AnnotatedCommitFromRef(ref *Reference) (*AnnotatedCommit, e
 type MergeTreeFlag int
 
 const (
-	MergeTreeFindRenames MergeTreeFlag = C.GIT_MERGE_TREE_FIND_RENAMES
+	// Detect renames that occur between the common ancestor and the "ours"
+	// side or the common ancestor and the "theirs" side.  This will enable
+	// the ability to merge between a modified and renamed file.
+	MergeTreeFindRenames MergeTreeFlag = C.GIT_MERGE_FIND_RENAMES
+	// If a conflict occurs, exit immediately instead of attempting to
+	// continue resolving conflicts.  The merge operation will fail with
+	// GIT_EMERGECONFLICT and no index will be returned.
+	MergeTreeFailOnConflict MergeTreeFlag = C.GIT_MERGE_FAIL_ON_CONFLICT
 )
 
 type MergeOptions struct {
@@ -98,7 +106,7 @@ type MergeOptions struct {
 func mergeOptionsFromC(opts *C.git_merge_options) MergeOptions {
 	return MergeOptions{
 		Version:         uint(opts.version),
-		TreeFlags:       MergeTreeFlag(opts.tree_flags),
+		TreeFlags:       MergeTreeFlag(opts.flags),
 		RenameThreshold: uint(opts.rename_threshold),
 		TargetLimit:     uint(opts.target_limit),
 		FileFavor:       MergeFileFavor(opts.file_favor),
@@ -124,7 +132,7 @@ func (mo *MergeOptions) toC() *C.git_merge_options {
 	}
 	return &C.git_merge_options{
 		version:          C.uint(mo.Version),
-		tree_flags:       C.git_merge_tree_flag_t(mo.TreeFlags),
+		flags:            C.git_merge_flag_t(mo.TreeFlags),
 		rename_threshold: C.uint(mo.RenameThreshold),
 		target_limit:     C.uint(mo.TargetLimit),
 		file_favor:       C.git_merge_file_favor_t(mo.FileFavor),
@@ -178,6 +186,9 @@ const (
 	MergePreferenceFastForwardOnly MergePreference = C.GIT_MERGE_PREFERENCE_FASTFORWARD_ONLY
 )
 
+// MergeAnalysis returns the possible actions which could be taken by
+// a 'git-merge' command. There may be multiple answers, so the first
+// return value is a bitmask of MergeAnalysis values.
 func (r *Repository) MergeAnalysis(theirHeads []*AnnotatedCommit) (MergeAnalysis, MergePreference, error) {
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
@@ -317,20 +328,6 @@ type MergeFileInput struct {
 	Contents []byte
 }
 
-// populate a C struct with merge file input, make sure to use freeMergeFileInput to clean up allocs
-func populateCMergeFileInput(c *C.git_merge_file_input, input MergeFileInput) {
-	c.path = C.CString(input.Path)
-	if input.Contents != nil {
-		c.ptr = (*C.char)(unsafe.Pointer(&input.Contents[0]))
-		c.size = C.size_t(len(input.Contents))
-	}
-	c.mode = C.uint(input.Mode)
-}
-
-func freeCMergeFileInput(c *C.git_merge_file_input) {
-	C.free(unsafe.Pointer(c.path))
-}
-
 type MergeFileFlags int
 
 const (
@@ -364,7 +361,7 @@ func populateCMergeFileOptions(c *C.git_merge_file_options, options MergeFileOpt
 	c.our_label = C.CString(options.OurLabel)
 	c.their_label = C.CString(options.TheirLabel)
 	c.favor = C.git_merge_file_favor_t(options.Favor)
-	c.flags = C.uint(options.Flags)
+	c.flags = C.git_merge_file_flag_t(options.Flags)
 }
 
 func freeCMergeFileOptions(c *C.git_merge_file_options) {
@@ -375,16 +372,26 @@ func freeCMergeFileOptions(c *C.git_merge_file_options) {
 
 func MergeFile(ancestor MergeFileInput, ours MergeFileInput, theirs MergeFileInput, options *MergeFileOptions) (*MergeFileResult, error) {
 
-	var cancestor C.git_merge_file_input
-	var cours C.git_merge_file_input
-	var ctheirs C.git_merge_file_input
+	ancestorPath := C.CString(ancestor.Path)
+	defer C.free(unsafe.Pointer(ancestorPath))
+	var ancestorContents *byte
+	if len(ancestor.Contents) > 0 {
+		ancestorContents = &ancestor.Contents[0]
+	}
 
-	populateCMergeFileInput(&cancestor, ancestor)
-	defer freeCMergeFileInput(&cancestor)
-	populateCMergeFileInput(&cours, ours)
-	defer freeCMergeFileInput(&cours)
-	populateCMergeFileInput(&ctheirs, theirs)
-	defer freeCMergeFileInput(&ctheirs)
+	oursPath := C.CString(ours.Path)
+	defer C.free(unsafe.Pointer(oursPath))
+	var oursContents *byte
+	if len(ours.Contents) > 0 {
+		oursContents = &ours.Contents[0]
+	}
+
+	theirsPath := C.CString(theirs.Path)
+	defer C.free(unsafe.Pointer(theirsPath))
+	var theirsContents *byte
+	if len(theirs.Contents) > 0 {
+		theirsContents = &theirs.Contents[0]
+	}
 
 	var copts *C.git_merge_file_options
 	if options != nil {
@@ -401,7 +408,11 @@ func MergeFile(ancestor MergeFileInput, ours MergeFileInput, theirs MergeFileInp
 	defer runtime.UnlockOSThread()
 
 	var result C.git_merge_file_result
-	ecode := C.git_merge_file(&result, &cancestor, &cours, &ctheirs, copts)
+	ecode := C._go_git_merge_file(&result,
+		(*C.char)(unsafe.Pointer(ancestorContents)), C.size_t(len(ancestor.Contents)), ancestorPath, C.uint(ancestor.Mode),
+		(*C.char)(unsafe.Pointer(oursContents)), C.size_t(len(ours.Contents)), oursPath, C.uint(ours.Mode),
+		(*C.char)(unsafe.Pointer(theirsContents)), C.size_t(len(theirs.Contents)), theirsPath, C.uint(theirs.Mode),
+		copts)
 	if ecode < 0 {
 		return nil, MakeGitError(ecode)
 	}

odb.go

@@ -8,7 +8,6 @@ extern void _go_git_odb_backend_free(git_odb_backend *backend);
 */
 import "C"
 import (
-	"fmt"
 	"reflect"
 	"runtime"
 	"unsafe"
@@ -55,6 +54,21 @@ func (v *Odb) AddBackend(backend *OdbBackend, priority int) (err error) {
 	return nil
 }
 
+func (v *Odb) ReadHeader(oid *Oid) (uint64, ObjectType, error) {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+	
+	var sz C.size_t
+	var cotype C.git_otype 
+
+	ret := C.git_odb_read_header(&sz, &cotype, v.ptr, oid.toC())
+	if ret < 0 {
+		return 0, C.GIT_OBJ_BAD, MakeGitError(ret)
+	}
+
+	return uint64(sz), ObjectType(cotype), nil
+}
+	
 func (v *Odb) Exists(oid *Oid) bool {
 	ret := C.git_odb_exists(v.ptr, oid.toC())
 	return ret != 0
@@ -62,12 +76,15 @@ func (v *Odb) Exists(oid *Oid) bool {
 
 func (v *Odb) Write(data []byte, otype ObjectType) (oid *Oid, err error) {
 	oid = new(Oid)
-	hdr := (*reflect.SliceHeader)(unsafe.Pointer(&data))
+	var cptr unsafe.Pointer
+	if len(data) > 0 {
+		cptr = unsafe.Pointer(&data[0])
+	}
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_odb_write(oid.toC(), v.ptr, unsafe.Pointer(hdr.Data), C.size_t(hdr.Len), C.git_otype(otype))
+	ret := C.git_odb_write(oid.toC(), v.ptr, cptr, C.size_t(len(data)), C.git_otype(otype))
 
 	if ret < 0 {
 		return nil, MakeGitError(ret)
@@ -107,9 +124,7 @@ func odbForEachCb(id *C.git_oid, handle unsafe.Pointer) int {
 	}
 
 	err := data.callback(newOidFromC(id))
-	fmt.Println("err %v", err)
 	if err != nil {
-		fmt.Println("returning EUSER")
 		data.err = err
 		return C.GIT_EUSER
 	}
@@ -130,7 +145,6 @@ func (v *Odb) ForEach(callback OdbForEachCallback) error {
 	defer pointerHandles.Untrack(handle)
 
 	ret := C._go_git_odb_foreach(v.ptr, handle)
-	fmt.Println("ret %v", ret)
 	if ret == C.GIT_EUSER {
 		return data.err
 	} else if ret < 0 {

odb_test.go

@@ -6,6 +6,34 @@ import (
 	"testing"
 )
 
+func TestOdbReadHeader(t *testing.T) {
+	repo := createTestRepo(t)
+	defer cleanupTestRepo(t, repo)
+
+	_, _ = seedTestRepo(t, repo)
+	odb, err := repo.Odb()
+	if err != nil {
+		t.Fatalf("Odb: %v", err)
+	}
+	data := []byte("hello")
+	id, err := odb.Write(data, ObjectBlob)
+	if err != nil {
+		t.Fatalf("odb.Write: %v", err)
+	}
+
+	sz, typ, err := odb.ReadHeader(id)
+	if err != nil {
+		t.Fatalf("ReadHeader: %v", err)
+	}
+	
+	if sz != uint64(len(data)) {
+		t.Errorf("ReadHeader got size %d, want %d", sz, len(data))
+	}
+	if typ != ObjectBlob {
+		t.Errorf("ReadHeader got object type %s", typ)
+	}
+}
+
 func TestOdbStream(t *testing.T) {
 	repo := createTestRepo(t)
 	defer cleanupTestRepo(t, repo)

remote.go

@@ -112,6 +112,9 @@ type FetchOptions struct {
 	//
 	// The default is to auto-follow tags.
 	DownloadTags DownloadTags
+
+	// Headers are extra headers for the fetch operation.
+	Headers []string
 }
 
 type Remote struct {
@@ -157,6 +160,9 @@ type PushOptions struct {
 	RemoteCallbacks RemoteCallbacks
 
 	PbParallelism uint
+
+	// Headers are extra headers for the push operation.
+	Headers []string
 }
 
 type RemoteHead struct {
@@ -594,6 +600,10 @@ func populateFetchOptions(options *C.git_fetch_options, opts *FetchOptions) {
 	options.prune = C.git_fetch_prune_t(opts.Prune)
 	options.update_fetchhead = cbool(opts.UpdateFetchhead)
 	options.download_tags = C.git_remote_autotag_option_t(opts.DownloadTags)
+
+	options.custom_headers = C.git_strarray{}
+	options.custom_headers.count = C.size_t(len(opts.Headers))
+	options.custom_headers.strings = makeCStringsFromStrings(opts.Headers)
 }
 
 func populatePushOptions(options *C.git_push_options, opts *PushOptions) {
@@ -604,6 +614,10 @@ func populatePushOptions(options *C.git_push_options, opts *PushOptions) {
 
 	options.pb_parallelism = C.uint(opts.PbParallelism)
 
+	options.custom_headers = C.git_strarray{}
+	options.custom_headers.count = C.size_t(len(opts.Headers))
+	options.custom_headers.strings = makeCStringsFromStrings(opts.Headers)
+
 	populateRemoteCallbacks(&options.callbacks, &opts.RemoteCallbacks)
 }
 
@@ -623,36 +637,51 @@ func (o *Remote) Fetch(refspecs []string, opts *FetchOptions, msg string) error
 	crefspecs.strings = makeCStringsFromStrings(refspecs)
 	defer freeStrarray(&crefspecs)
 
-	var coptions C.git_fetch_options
-	populateFetchOptions(&coptions, opts)
+	coptions := (*C.git_fetch_options)(C.calloc(1, C.size_t(unsafe.Sizeof(C.git_fetch_options{}))))
+	defer C.free(unsafe.Pointer(coptions))
+
+	populateFetchOptions(coptions, opts)
 	defer untrackCalbacksPayload(&coptions.callbacks)
+	defer freeStrarray(&coptions.custom_headers)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_remote_fetch(o.ptr, &crefspecs, &coptions, cmsg)
+	ret := C.git_remote_fetch(o.ptr, &crefspecs, coptions, cmsg)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}
 	return nil
 }
 
-func (o *Remote) ConnectFetch(callbacks *RemoteCallbacks) error {
-	return o.Connect(ConnectDirectionFetch, callbacks)
+func (o *Remote) ConnectFetch(callbacks *RemoteCallbacks, headers []string) error {
+	return o.Connect(ConnectDirectionFetch, callbacks, headers)
 }
 
-func (o *Remote) ConnectPush(callbacks *RemoteCallbacks) error {
-	return o.Connect(ConnectDirectionPush, callbacks)
+func (o *Remote) ConnectPush(callbacks *RemoteCallbacks, headers []string) error {
+	return o.Connect(ConnectDirectionPush, callbacks, headers)
 }
 
-func (o *Remote) Connect(direction ConnectDirection, callbacks *RemoteCallbacks) error {
+// Connect opens a connection to a remote.
+//
+// The transport is selected based on the URL. The direction argument
+// is due to a limitation of the git protocol (over TCP or SSH) which
+// starts up a specific binary which can only do the one or the other.
+//
+// 'headers' are extra HTTP headers to use in this connection.
+func (o *Remote) Connect(direction ConnectDirection, callbacks *RemoteCallbacks, headers []string) error {
 	var ccallbacks C.git_remote_callbacks
 	populateRemoteCallbacks(&ccallbacks, callbacks)
 
+	cheaders := C.git_strarray{}
+	cheaders.count = C.size_t(len(headers))
+	cheaders.strings = makeCStringsFromStrings(headers)
+	defer freeStrarray(&cheaders)
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	if ret := C.git_remote_connect(o.ptr, C.git_direction(direction), &ccallbacks); ret != 0 {
+	if ret := C.git_remote_connect(o.ptr, C.git_direction(direction), &ccallbacks, &cheaders); ret != 0 {
 		return MakeGitError(ret)
 	}
 	return nil
@@ -710,14 +739,17 @@ func (o *Remote) Push(refspecs []string, opts *PushOptions) error {
 	crefspecs.strings = makeCStringsFromStrings(refspecs)
 	defer freeStrarray(&crefspecs)
 
-	var coptions C.git_push_options
-	populatePushOptions(&coptions, opts)
+	coptions := (*C.git_push_options)(C.calloc(1, C.size_t(unsafe.Sizeof(C.git_push_options{}))))
+	defer C.free(unsafe.Pointer(coptions))
+
+	populatePushOptions(coptions, opts)
 	defer untrackCalbacksPayload(&coptions.callbacks)
+	defer freeStrarray(&coptions.custom_headers)
 
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
-	ret := C.git_remote_push(o.ptr, &crefspecs, &coptions)
+	ret := C.git_remote_push(o.ptr, &crefspecs, coptions)
 	if ret < 0 {
 		return MakeGitError(ret)
 	}

remote_test.go

@@ -58,7 +58,7 @@ func TestRemoteConnect(t *testing.T) {
 	remote, err := repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
 	checkFatal(t, err)
 
-	err = remote.ConnectFetch(nil)
+	err = remote.ConnectFetch(nil, nil)
 	checkFatal(t, err)
 }
 
@@ -69,7 +69,7 @@ func TestRemoteLs(t *testing.T) {
 	remote, err := repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
 	checkFatal(t, err)
 
-	err = remote.ConnectFetch(nil)
+	err = remote.ConnectFetch(nil, nil)
 	checkFatal(t, err)
 
 	heads, err := remote.Ls()
@@ -87,7 +87,7 @@ func TestRemoteLsFiltering(t *testing.T) {
 	remote, err := repo.Remotes.Create("origin", "https://github.com/libgit2/TestGitRepository")
 	checkFatal(t, err)
 
-	err = remote.ConnectFetch(nil)
+	err = remote.ConnectFetch(nil, nil)
 	checkFatal(t, err)
 
 	heads, err := remote.Ls("master")
@@ -166,7 +166,7 @@ func TestRemotePrune(t *testing.T) {
 	rr, err := repo.Remotes.Lookup("origin")
 	checkFatal(t, err)
 
-	err = rr.ConnectFetch(nil)
+	err = rr.ConnectFetch(nil, nil)
 	checkFatal(t, err)
 
 	err = rr.Prune(nil)

repository.go

@@ -66,15 +66,29 @@ func OpenRepository(path string) (*Repository, error) {
 	return newRepositoryFromC(ptr), nil
 }
 
-func OpenRepositoryExtended(path string) (*Repository, error) {
+type RepositoryOpenFlag int
+
+const (
+	RepositoryOpenNoSearch RepositoryOpenFlag = C.GIT_REPOSITORY_OPEN_NO_SEARCH
+	RepositoryOpenCrossFs  RepositoryOpenFlag = C.GIT_REPOSITORY_OPEN_CROSS_FS
+	RepositoryOpenBare     RepositoryOpenFlag = C.GIT_REPOSITORY_OPEN_BARE
+)
+
+func OpenRepositoryExtended(path string, flags RepositoryOpenFlag, ceiling string) (*Repository, error) {
 	cpath := C.CString(path)
 	defer C.free(unsafe.Pointer(cpath))
 
+	var cceiling *C.char = nil
+	if len(ceiling) > 0 {
+		cceiling = C.CString(ceiling)
+		defer C.free(unsafe.Pointer(cceiling))
+	}
+
 	runtime.LockOSThread()
 	defer runtime.UnlockOSThread()
 
 	var ptr *C.git_repository
-	ret := C.git_repository_open_ext(&ptr, cpath, 0, nil)
+	ret := C.git_repository_open_ext(&ptr, cpath, C.uint(flags), cceiling)
 	if ret < 0 {
 		return nil, MakeGitError(ret)
 	}
@@ -437,3 +451,24 @@ func (r *Repository) StateCleanup() error {
 	}
 	return nil
 }
+func (r *Repository) AddGitIgnoreRules(rules string) error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	crules := C.CString(rules)
+	defer C.free(unsafe.Pointer(crules))
+	if ret := C.git_ignore_add_rule(r.ptr, crules); ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}
+
+func (r *Repository) ClearGitIgnoreRules() error {
+	runtime.LockOSThread()
+	defer runtime.UnlockOSThread()
+
+	if ret := C.git_ignore_clear_internal_rules(r.ptr); ret < 0 {
+		return MakeGitError(ret)
+	}
+	return nil
+}

tree.go

@@ -149,7 +149,7 @@ func (v *TreeBuilder) Free() {
 	C.git_treebuilder_free(v.ptr)
 }
 
-func (v *TreeBuilder) Insert(filename string, id *Oid, filemode int) error {
+func (v *TreeBuilder) Insert(filename string, id *Oid, filemode Filemode) error {
 	cfilename := C.CString(filename)
 	defer C.free(unsafe.Pointer(cfilename))
 

tree_test.go

@@ -20,3 +20,44 @@ func TestTreeEntryById(t *testing.T) {
 		t.Fatalf("entry id %v was not found", id)
 	}
 }
+
+func TestTreeBuilderInsert(t *testing.T) {
+	repo := createTestRepo(t)
+	defer cleanupTestRepo(t, repo)
+
+	subTree, err := repo.TreeBuilder()
+	if err != nil {
+		t.Fatalf("TreeBuilder: %v", err)
+	}
+	defer subTree.Free()
+
+	odb, err := repo.Odb()
+	if err != nil {
+		t.Fatalf("repo.Odb: %v", err)
+	}
+	blobId, err := odb.Write([]byte("hello"), ObjectBlob)
+	if err != nil {
+		t.Fatalf("odb.Write: %v", err)
+	}
+	if err = subTree.Insert("subfile", blobId, FilemodeBlobExecutable); err != nil {
+		t.Fatalf("TreeBuilder.Insert: %v", err)
+	}
+	treeID, err := subTree.Write()
+	if err != nil {
+		t.Fatalf("TreeBuilder.Write: %v", err)
+	}
+
+	tree, err := repo.LookupTree(treeID)
+	if err != nil {
+		t.Fatalf("LookupTree: %v", err)
+	}
+
+	entry, err := tree.EntryByPath("subfile")
+	if err != nil {
+		t.Fatalf("tree.EntryByPath(%q): %v", "subfile", err)
+	}
+
+	if !entry.Id.Equal(blobId) {
+		t.Fatalf("got oid %v, want %v", entry.Id, blobId)
+	}
+}

vendor/libgit2

@@ -1 +1 @@
-Subproject commit ed38e26db5435b519d8b796e4b6c2c660fe982b5
+Subproject commit f596946f09f3c1e51239a24ff41e27f2c1ffa2b7

walk.go

@@ -194,6 +194,10 @@ func (v *RevWalk) Iterate(fun RevWalkIterator) (err error) {
 	return nil
 }
 
+func (v *RevWalk) SimplifyFirstParent() {
+	C.git_revwalk_simplify_first_parent(v.ptr)
+}
+
 func (v *RevWalk) Sorting(sm SortType) {
 	C.git_revwalk_sorting(v.ptr, C.uint(sm))
 }

wrapper.c

@@ -141,6 +141,29 @@ int _go_git_tag_foreach(git_repository *repo, void *payload)
     return git_tag_foreach(repo, (git_tag_foreach_cb)&gitTagForeachCb, payload);
 }
 
+int _go_git_merge_file(git_merge_file_result* out, char* ancestorContents, size_t ancestorLen, char* ancestorPath, unsigned int ancestorMode, char* oursContents, size_t oursLen, char* oursPath, unsigned int oursMode, char* theirsContents, size_t theirsLen, char* theirsPath, unsigned int theirsMode, git_merge_file_options* copts) {
+	git_merge_file_input ancestor = GIT_MERGE_FILE_INPUT_INIT;
+	git_merge_file_input ours = GIT_MERGE_FILE_INPUT_INIT;
+	git_merge_file_input theirs = GIT_MERGE_FILE_INPUT_INIT;
+
+	ancestor.ptr = ancestorContents;
+	ancestor.size = ancestorLen;
+	ancestor.path = ancestorPath;
+	ancestor.mode = ancestorMode;
+
+	ours.ptr = oursContents;
+	ours.size = oursLen;
+	ours.path = oursPath;
+	ours.mode = oursMode;
+
+	theirs.ptr = theirsContents;
+	theirs.size = theirsLen;
+	theirs.path = theirsPath;
+	theirs.mode = theirsMode;
+
+	return git_merge_file(out, &ancestor, &ours, &theirs, copts);
+}
+
 void _go_git_setup_stash_apply_progress_callbacks(git_stash_apply_options *opts) {
 	opts->progress_cb = (git_stash_apply_progress_cb)stashApplyProgressCb;
 }