Custom regexp external issues (#17624)
* Implement custom regular expression for external issue tracking. Signed-off-by: Alexander Beyn <malex@fatelectrons.org> * Fix syntax/style * Update repo.go * Set metas['regexp'] * gofmt * fix some tests * fix more tests * refactor frontend * use LRU cache for regexp * Update modules/markup/html_internal_test.go Co-authored-by: Alexander Beyn <malex@fatelectrons.org> Co-authored-by: techknowlogick <techknowlogick@gitea.io> Co-authored-by: Lauris BH <lauris@nix.lv> Co-authored-by: 6543 <6543@obermui.de> Co-authored-by: wxiaoguang <wxiaoguang@gmail.com>tokarchuk/v1.17
Sandro Santilli
3 years ago
committed by
GitHub
parent
5f618248a9
commit
52c2e82813
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// Copyright 2022 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package regexplru |
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import ( |
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"regexp" |
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"code.gitea.io/gitea/modules/log" |
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lru "github.com/hashicorp/golang-lru" |
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) |
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var lruCache *lru.Cache |
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func init() { |
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var err error |
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lruCache, err = lru.New(1000) |
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if err != nil { |
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log.Fatal("failed to new LRU cache, err: %v", err) |
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} |
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} |
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// GetCompiled works like regexp.Compile, the compiled expr or error is stored in LRU cache
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func GetCompiled(expr string) (r *regexp.Regexp, err error) { |
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v, ok := lruCache.Get(expr) |
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if !ok { |
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r, err = regexp.Compile(expr) |
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if err != nil { |
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lruCache.Add(expr, err) |
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return nil, err |
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} |
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lruCache.Add(expr, r) |
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} else { |
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r, ok = v.(*regexp.Regexp) |
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if !ok { |
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if err, ok = v.(error); ok { |
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return nil, err |
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} |
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panic("impossible") |
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} |
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} |
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return r, nil |
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} |
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@ -0,0 +1,27 @@ |
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// Copyright 2022 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package regexplru |
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import ( |
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"testing" |
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"github.com/stretchr/testify/assert" |
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) |
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func TestRegexpLru(t *testing.T) { |
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r, err := GetCompiled("a") |
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assert.NoError(t, err) |
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assert.True(t, r.MatchString("a")) |
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r, err = GetCompiled("a") |
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assert.NoError(t, err) |
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assert.True(t, r.MatchString("a")) |
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assert.EqualValues(t, 1, lruCache.Len()) |
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_, err = GetCompiled("(") |
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assert.Error(t, err) |
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assert.EqualValues(t, 2, lruCache.Len()) |
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} |
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