forgejo/modules/regexplru/regexplru.go
Gusted 2457f5ff22 chore: branding import path (#7337)
- Massive replacement of changing `code.gitea.io/gitea` to `forgejo.org`.
- Resolves forgejo/discussions#258

Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/7337
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Reviewed-by: Michael Kriese <michael.kriese@gmx.de>
Reviewed-by: Beowulf <beowulf@beocode.eu>
Reviewed-by: Panagiotis "Ivory" Vasilopoulos <git@n0toose.net>
Co-authored-by: Gusted <postmaster@gusted.xyz>
Co-committed-by: Gusted <postmaster@gusted.xyz>
2025-03-27 19:40:14 +00:00

44 lines
861 B
Go

// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package regexplru
import (
"regexp"
"forgejo.org/modules/log"
lru "github.com/hashicorp/golang-lru/v2"
)
var lruCache *lru.Cache[string, any]
func init() {
var err error
lruCache, err = lru.New[string, any](1000)
if err != nil {
log.Fatal("failed to new LRU cache, err: %v", err)
}
}
// GetCompiled works like regexp.Compile, the compiled expr or error is stored in LRU cache
func GetCompiled(expr string) (r *regexp.Regexp, err error) {
v, ok := lruCache.Get(expr)
if !ok {
r, err = regexp.Compile(expr)
if err != nil {
lruCache.Add(expr, err)
return nil, err
}
lruCache.Add(expr, r)
} else {
r, ok = v.(*regexp.Regexp)
if !ok {
if err, ok = v.(error); ok {
return nil, err
}
panic("impossible")
}
}
return r, nil
}