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unpack.go
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package mdclasses
import (
"fmt"
"github.com/pkg/errors"
"github.com/v8platform/mdclasses/encoding/xml"
"io/ioutil"
"os"
"path/filepath"
"strings"
)
type Unpacker interface {
Unpack(cfg UnpackConfig) error
}
type UnpackConfig struct {
Base string
Path string
IdxObjects idxMDOTypeRef
}
func NewUnpackConfig(base string) UnpackConfig {
return UnpackConfig{
base,
base,
make(idxMDOTypeRef),
}
}
const ExtMdo = ".mdo"
var dirMap = map[string]string{
"Configuration": "Configuration", // Для конифгурации
"Subsystem": "Subsystems",
"Catalog": "Catalogs",
"Document": "Documents",
}
func (cfg UnpackConfig) WithPath(path string) UnpackConfig {
return UnpackConfig{
cfg.Base,
path,
cfg.IdxObjects,
}
}
func (cfg UnpackConfig) HasUnpacked(ref MDOTypeRef) (interface{}, bool) {
val, ok := cfg.IdxObjects[ref]
return val, ok
}
func (cfg UnpackConfig) StoreUnpacked(ref MDOTypeRef, value interface{}) {
// TODO Надо добавить тег для в имя ключа, возможно пересечение имен
cfg.IdxObjects[ref] = value
}
var NoNameFile = errors.New("no name unpack config")
func (cfg UnpackConfig) getFilename(name string) (string, error) {
var filename string
if strings.HasPrefix(name, ".") {
filename = filepath.Join(cfg.Path, name)
}
filename = filepath.Join(cfg.Base, name)
_, err := os.Stat(filename)
if err != nil {
return "", err
}
return filename, nil
}
func Unpack(cfg UnpackConfig, filename string, value interface{}) error {
// TODO Сделать проверку что value это поинтер
filename, err := cfg.getFilename(filename)
if err != nil {
return err
}
data, err := ioutil.ReadFile(filename)
if err != nil {
log.Fatalf("Ошибка чтения файла %s", err.Error())
}
err = xml.Unmarshal(data, value)
if err != nil {
fmt.Printf("error: %v", err)
return err
}
if un, ok := value.(Unpacker); ok {
err := un.Unpack(cfg.WithPath(filepath.Dir(filename)))
if err != nil {
return err
}
}
return nil
}