/
mask.go
88 lines (75 loc) · 2.13 KB
/
mask.go
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/*
* Copyright(c) 2021 Lianjia, Inc. All Rights Reserved
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package mask
import (
"embed"
"fmt"
"strings"
"github.com/LianjiaTech/d18n/common"
)
//go:embed corpus
var corpusFS embed.FS
type MaskStruct struct {
Config maskConfig // mask config
}
func NewMaskStruct(file string) (*MaskStruct, error) {
var m *MaskStruct
mc, err := ParseMaskConfig(file)
if err != nil {
return m, err
}
m = &MaskStruct{
Config: mc,
}
return m, nil
}
// Mask mask column data for SQL query
// name: column name, case insensitive
// value: column value
func (m *MaskStruct) Mask(name string, value interface{}) (ret string, err error) {
// column name case insensitive
name = strings.ToLower(name)
// check mask config
if _, ok := m.Config[name]; !ok {
return fmt.Sprint(value), nil
}
if _, ok := maskFuncs[m.Config[name].MaskFunc]; !ok {
return fmt.Sprint(value), fmt.Errorf(common.WrongMaskFunc)
}
// concat mask args
var args []interface{}
// generate fake data no need origin value
if !strings.HasPrefix(m.Config[name].MaskFunc, "fake") {
args = append(args, value)
}
for _, arg := range m.Config[name].Args {
args = append(args, arg)
}
// run mask function
mask := maskFuncs[m.Config[name].MaskFunc]
return mask(args...)
}
// MaskRow mask data for read file
func (m *MaskStruct) MaskRow(header []common.HeaderColumn, row []string) (ret []string, err error) {
if len(header) != len(row) {
return ret, fmt.Errorf(common.WrongColumnsCnt)
}
ret = make([]string, len(header))
for i, h := range header {
ret[i], err = m.Mask(h.Name, row[i])
if err != nil {
return
}
}
return
}