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string.go
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/
string.go
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// Copyright (c) 2022 The Linna Authors.
//
// 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 helper
import "unicode/utf8"
// ReplaceCardNo 指定字符前部与后部保留长度,替换中间字符
// 如:589********25
func ReplaceCardNo(str, replaceStr string, s, e int) string {
count := utf8.RuneCountInString(str)
if count < s+e {
return str
}
var (
rep string
m string
j int
counter int
)
for i := 0; i < len(str); i++ {
m = str[j : i+1]
if !utf8.FullRuneInString(m) {
continue
}
j = i + 1
counter++
if counter > s && counter <= count-e {
rep += replaceStr
} else {
rep += m
}
}
return rep
}