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package otbuiltin
import (
"strings"
"unsafe"
)
// #cgo pkg-config: ostree-1
// #include <stdlib.h>
// #include <glib.h>
// #include <ostree.h>
// #include "builtin.go.h"
import "C"
// initOptions contains all of the options for initializing an ostree repo
//
// Note: while this is private, exported fields are public and part of the API.
type initOptions struct {
// Mode defines repository mode: either bare, archive-z2, or bare-user
Mode string
}
// NewInitOptions instantiates and returns an initOptions struct with default values set
func NewInitOptions() initOptions {
return initOptions{
Mode: "bare",
}
}
// Init initializes a new ostree repository at the given path. Returns true
// if the repo exists at the location, regardless of whether it was initialized
// by the function or if it already existed. Returns an error if the repo could
// not be initialized
func Init(path string, options initOptions) (bool, error) {
repoMode, err := parseRepoMode(options.Mode)
if err != nil {
return false, err
}
// Create a repo struct from the path
cpath := C.CString(path)
defer C.free(unsafe.Pointer(cpath))
pathc := C.g_file_new_for_path(cpath)
defer C.g_object_unref(C.gpointer(pathc))
repo := C.ostree_repo_new(pathc)
// If the repo exists in the filesystem, return an error but set exists to true
/* var exists C.gboolean = 0
success := glib.GoBool(glib.GBoolean(C.ostree_repo_exists(crepo, &exists, &cerr)))
if exists != 0 {
err = errors.New("repository already exists")
return true, err
} else if !success {
return false, generateError(cerr)
}*/
var cErr *C.GError
defer C.free(unsafe.Pointer(cErr))
if r := C.ostree_repo_create(repo, repoMode, nil, &cErr); !isOk(r) {
err := generateError(cErr)
if strings.Contains(err.Error(), "File exists") {
return true, err
}
return false, err
}
return true, nil
}
// parseRepoMode converts a mode string to a C.OSTREE_REPO_MODE enum value
func parseRepoMode(modeLabel string) (C.OstreeRepoMode, error) {
var cErr *C.GError
defer C.free(unsafe.Pointer(cErr))
cModeLabel := C.CString(modeLabel)
defer C.free(unsafe.Pointer(cModeLabel))
var retMode C.OstreeRepoMode
if r := C.ostree_repo_mode_from_string(cModeLabel, &retMode, &cErr); !isOk(r) {
// NOTE(lucab): zero-value for this C enum has no special/invalid meaning.
return C.OSTREE_REPO_MODE_BARE, generateError(cErr)
}
return retMode, nil
}
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