mirror of
https://github.com/octoleo/restic.git
synced 2024-12-23 19:38:57 +00:00
51 lines
1.3 KiB
Go
51 lines
1.3 KiB
Go
// Copyright 2017, OpenCensus 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 internal
|
|
|
|
import (
|
|
"strings"
|
|
"unicode"
|
|
)
|
|
|
|
const labelKeySizeLimit = 100
|
|
|
|
// Sanitize returns a string that is trunacated to 100 characters if it's too
|
|
// long, and replaces non-alphanumeric characters to underscores.
|
|
func Sanitize(s string) string {
|
|
if len(s) == 0 {
|
|
return s
|
|
}
|
|
if len(s) > labelKeySizeLimit {
|
|
s = s[:labelKeySizeLimit]
|
|
}
|
|
s = strings.Map(sanitizeRune, s)
|
|
if unicode.IsDigit(rune(s[0])) {
|
|
s = "key_" + s
|
|
}
|
|
if s[0] == '_' {
|
|
s = "key" + s
|
|
}
|
|
return s
|
|
}
|
|
|
|
// converts anything that is not a letter or digit to an underscore
|
|
func sanitizeRune(r rune) rune {
|
|
if unicode.IsLetter(r) || unicode.IsDigit(r) {
|
|
return r
|
|
}
|
|
// Everything else turns into an underscore
|
|
return '_'
|
|
}
|