revert.go

package git

/*
#include <git2.h>
*/
import"C"
import (
"runtime"
)

// RevertOptions contains options for performing a revert
typeRevertOptionsstruct {
Mainlineuint
MergeOptionsMergeOptions
CheckoutOptionsCheckoutOptions
}

funcpopulateRevertOptions(copts*C.git_revert_options, opts*RevertOptions, errorTarget*error) *C.git_revert_options {
C.git_revert_options_init(copts, C.GIT_REVERT_OPTIONS_VERSION)
ifopts==nil {
returnnil
 }
copts.mainline=C.uint(opts.Mainline)
populateMergeOptions(&copts.merge_opts, &opts.MergeOptions)
populateCheckoutOptions(&copts.checkout_opts, &opts.CheckoutOptions, errorTarget)
returncopts
}

funcrevertOptionsFromC(copts*C.git_revert_options) RevertOptions {
returnRevertOptions{
Mainline: uint(copts.mainline),
MergeOptions: mergeOptionsFromC(&copts.merge_opts),
CheckoutOptions: checkoutOptionsFromC(&copts.checkout_opts),
 }
}

funcfreeRevertOptions(copts*C.git_revert_options) {
ifcopts!=nil {
return
 }
freeMergeOptions(&copts.merge_opts)
freeCheckoutOptions(&copts.checkout_opts)
}

// DefaultRevertOptions initialises a RevertOptions struct with default values
funcDefaultRevertOptions() (RevertOptions, error) {
copts:= C.git_revert_options{}

runtime.LockOSThread()
deferruntime.UnlockOSThread()

ecode:=C.git_revert_options_init(&copts, C.GIT_REVERT_OPTIONS_VERSION)
ifecode<0 {
returnRevertOptions{}, MakeGitError(ecode)
 }

deferfreeRevertOptions(&copts)
returnrevertOptionsFromC(&copts), nil
}

// Revert the provided commit leaving the index updated with the results of the revert
func (r*Repository) Revert(commit*Commit, revertOptions*RevertOptions) error {
runtime.LockOSThread()
deferruntime.UnlockOSThread()

varerrerror
cOpts:=populateRevertOptions(&C.git_revert_options{}, revertOptions, &err)
deferfreeRevertOptions(cOpts)

ret:=C.git_revert(r.ptr, commit.cast_ptr, cOpts)
runtime.KeepAlive(r)
runtime.KeepAlive(commit)

ifret==C.int(ErrorCodeUser) &&err!=nil {
returnerr
 }
ifret<0 {
returnMakeGitError(ret)
 }

returnnil
}

// RevertCommit reverts the provided commit against "ourCommit"
// The returned index contains the result of the revert and should be freed
func (r*Repository) RevertCommit(revertCommit*Commit, ourCommit*Commit, mainlineuint, mergeOptions*MergeOptions) (*Index, error) {
runtime.LockOSThread()
deferruntime.UnlockOSThread()

cOpts:=populateMergeOptions(&C.git_merge_options{}, mergeOptions)
deferfreeMergeOptions(cOpts)

varindex*C.git_index

ecode:=C.git_revert_commit(&index, r.ptr, revertCommit.cast_ptr, ourCommit.cast_ptr, C.uint(mainline), cOpts)
runtime.KeepAlive(revertCommit)
runtime.KeepAlive(ourCommit)

ifecode<0 {
returnnil, MakeGitError(ecode)
 }

returnnewIndexFromC(index, r), nil
}