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package git
/*
#include <git2.h>
extern void _go_git_populate_remote_cb(git_clone_options *opts);
*/
import "C"
import (
"runtime"
"unsafe"
)
type RemoteCreateCallback func(repo *Repository, name, url string) (*Remote, ErrorCode)
type CloneOptions struct {
*CheckoutOpts
*FetchOptions
Bare bool
CheckoutBranch string
RemoteCreateCallback RemoteCreateCallback
}
func Clone(url string, path string, options *CloneOptions) (*Repository, error) {
curl := C.CString(url)
defer C.free(unsafe.Pointer(curl))
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
copts := (*C.git_clone_options)(C.calloc(1, C.size_t(unsafe.Sizeof(C.git_clone_options{}))))
populateCloneOptions(copts, options)
defer freeCloneOptions(copts)
if len(options.CheckoutBranch) != 0 {
copts.checkout_branch = C.CString(options.CheckoutBranch)
}
runtime.LockOSThread()
defer runtime.UnlockOSThread()
var ptr *C.git_repository
ret := C.git_clone(&ptr, curl, cpath, copts)
if ret < 0 {
return nil, MakeGitError(ret)
}
return newRepositoryFromC(ptr), nil
}
//export remoteCreateCallback
func remoteCreateCallback(cremote unsafe.Pointer, crepo unsafe.Pointer, cname, curl *C.char, payload unsafe.Pointer) C.int {
name := C.GoString(cname)
url := C.GoString(curl)
repo := newRepositoryFromC((*C.git_repository)(crepo))
// We don't own this repository, so make sure we don't try to free it
runtime.SetFinalizer(repo, nil)
if opts, ok := pointerHandles.Get(payload).(CloneOptions); ok {
remote, err := opts.RemoteCreateCallback(repo, name, url)
// clear finalizer as the calling C function will
// free the remote itself
runtime.SetFinalizer(remote, nil)
if err == ErrOk && remote != nil {
cptr := (**C.git_remote)(cremote)
*cptr = remote.ptr
} else if err == ErrOk && remote == nil {
panic("no remote created by callback")
}
return C.int(err)
} else {
panic("invalid remote create callback")
}
}
func populateCloneOptions(ptr *C.git_clone_options, opts *CloneOptions) {
C.git_clone_init_options(ptr, C.GIT_CLONE_OPTIONS_VERSION)
if opts == nil {
return
}
populateCheckoutOpts(&ptr.checkout_opts, opts.CheckoutOpts)
populateFetchOptions(&ptr.fetch_opts, opts.FetchOptions)
ptr.bare = cbool(opts.Bare)
if opts.RemoteCreateCallback != nil {
// Go v1.1 does not allow to assign a C function pointer
C._go_git_populate_remote_cb(ptr)
ptr.remote_cb_payload = pointerHandles.Track(*opts)
}
}
func freeCloneOptions(ptr *C.git_clone_options) {
if ptr == nil {
return
}
freeCheckoutOpts(&ptr.checkout_opts)
if ptr.remote_cb_payload != nil {
pointerHandles.Untrack(ptr.remote_cb_payload)
}
C.free(unsafe.Pointer(ptr.checkout_branch))
C.free(unsafe.Pointer(ptr))
}
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