forgejo/vendor/github.com/go-openapi/validate/rexp.go
6543 d1353e1f7c
Vendor Update (#14496)
* update code.gitea.io/sdk/gitea v0.13.1 -> v0.13.2

* update github.com/go-swagger/go-swagger v0.25.0 -> v0.26.0

* update github.com/google/uuid v1.1.2 -> v1.2.0

* update github.com/klauspost/compress v1.11.3 -> v1.11.7

* update github.com/lib/pq 083382b7e6fc -> v1.9.0

* update github.com/markbates/goth v1.65.0 -> v1.66.1

* update github.com/mattn/go-sqlite3 v1.14.4 -> v1.14.6

* update github.com/mgechev/revive 246eac737dc7 -> v1.0.3

* update github.com/minio/minio-go/v7 v7.0.6 -> v7.0.7

* update github.com/niklasfasching/go-org v1.3.2 -> v1.4.0

* update github.com/olivere/elastic/v7 v7.0.21 -> v7.0.22

* update github.com/pquerna/otp v1.2.0 -> v1.3.0

* update github.com/xanzy/go-gitlab v0.39.0 -> v0.42.0

* update github.com/yuin/goldmark v1.2.1 -> v1.3.1
2021-01-28 17:56:38 +01:00

72 lines
1.6 KiB
Go
Vendored

// Copyright 2015 go-swagger maintainers
//
// 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 validate
import (
re "regexp"
"sync"
"sync/atomic"
)
// Cache for compiled regular expressions
var (
cacheMutex = &sync.Mutex{}
reDict = atomic.Value{} // map[string]*re.Regexp
)
func compileRegexp(pattern string) (*re.Regexp, error) {
if cache, ok := reDict.Load().(map[string]*re.Regexp); ok {
if r := cache[pattern]; r != nil {
return r, nil
}
}
r, err := re.Compile(pattern)
if err != nil {
return nil, err
}
cacheRegexp(r)
return r, nil
}
func mustCompileRegexp(pattern string) *re.Regexp {
if cache, ok := reDict.Load().(map[string]*re.Regexp); ok {
if r := cache[pattern]; r != nil {
return r
}
}
r := re.MustCompile(pattern)
cacheRegexp(r)
return r
}
func cacheRegexp(r *re.Regexp) {
cacheMutex.Lock()
defer cacheMutex.Unlock()
if cache, ok := reDict.Load().(map[string]*re.Regexp); !ok || cache[r.String()] == nil {
newCache := map[string]*re.Regexp{
r.String(): r,
}
for k, v := range cache {
newCache[k] = v
}
reDict.Store(newCache)
}
}