mirror of
https://github.com/go-gitea/gitea
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ad2642a8aa
* Implementation for calculating language statistics Impement saving code language statistics to database Implement rendering langauge stats Add primary laguage to show in repository list Implement repository stats indexer queue Add indexer test Refactor to use queue module * Do not timeout for queues
117 lines
2.4 KiB
Go
117 lines
2.4 KiB
Go
// Copyright 2020 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 git
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import (
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"bytes"
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"io"
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"io/ioutil"
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"math"
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"path/filepath"
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"github.com/src-d/enry/v2"
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"gopkg.in/src-d/go-git.v4"
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"gopkg.in/src-d/go-git.v4/plumbing"
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"gopkg.in/src-d/go-git.v4/plumbing/object"
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)
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const fileSizeLimit int64 = 16 * 1024 * 1024
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// GetLanguageStats calculates language stats for git repository at specified commit
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func (repo *Repository) GetLanguageStats(commitID string) (map[string]float32, error) {
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r, err := git.PlainOpen(repo.Path)
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if err != nil {
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return nil, err
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}
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rev, err := r.ResolveRevision(plumbing.Revision(commitID))
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if err != nil {
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return nil, err
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}
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commit, err := r.CommitObject(*rev)
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if err != nil {
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return nil, err
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}
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tree, err := commit.Tree()
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if err != nil {
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return nil, err
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}
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sizes := make(map[string]int64)
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var total int64
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err = tree.Files().ForEach(func(f *object.File) error {
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if enry.IsVendor(f.Name) || enry.IsDotFile(f.Name) ||
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enry.IsDocumentation(f.Name) || enry.IsConfiguration(f.Name) {
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return nil
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}
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// TODO: Use .gitattributes file for linguist overrides
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language, ok := enry.GetLanguageByExtension(f.Name)
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if !ok {
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if language, ok = enry.GetLanguageByFilename(f.Name); !ok {
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content, err := readFile(f, fileSizeLimit)
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if err != nil {
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return nil
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}
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language = enry.GetLanguage(filepath.Base(f.Name), content)
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if language == enry.OtherLanguage {
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return nil
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}
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}
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}
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if language != "" {
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sizes[language] += f.Size
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total += f.Size
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}
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return nil
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})
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if err != nil {
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return nil, err
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}
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stats := make(map[string]float32)
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var otherPerc float32 = 100
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for language, size := range sizes {
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perc := float32(math.Round(float64(size)/float64(total)*1000) / 10)
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if perc <= 0.1 {
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continue
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}
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otherPerc -= perc
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stats[language] = perc
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}
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otherPerc = float32(math.Round(float64(otherPerc)*10) / 10)
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if otherPerc > 0 {
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stats["other"] = otherPerc
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}
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return stats, nil
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}
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func readFile(f *object.File, limit int64) ([]byte, error) {
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r, err := f.Reader()
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if err != nil {
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return nil, err
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}
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defer r.Close()
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if limit <= 0 {
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return ioutil.ReadAll(r)
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}
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size := f.Size
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if limit > 0 && size > limit {
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size = limit
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}
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buf := bytes.NewBuffer(nil)
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buf.Grow(int(size))
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_, err = io.Copy(buf, io.LimitReader(r, limit))
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return buf.Bytes(), err
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}
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