forked from NYANDEV/forgejo
ea4c139cd2
* Change language statistics to save size instead of percentage in database Co-Authored-By: Cirno the Strongest <1447794+CirnoT@users.noreply.github.com> * Do not exclude if only language * Fix edge cases with special langauges Co-authored-by: Cirno the Strongest <1447794+CirnoT@users.noreply.github.com>
98 lines
2 KiB
Go
98 lines
2 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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"code.gitea.io/gitea/modules/analyze"
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"github.com/go-enry/go-enry/v2"
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"github.com/go-git/go-git/v5"
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"github.com/go-git/go-git/v5/plumbing"
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"github.com/go-git/go-git/v5/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]int64, 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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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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// If content can not be read just do detection by filename
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content, _ := readFile(f, fileSizeLimit)
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if enry.IsGenerated(f.Name, content) {
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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 := analyze.GetCodeLanguage(f.Name, content)
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if language == enry.OtherLanguage || language == "" {
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language = "other"
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}
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sizes[language] += f.Size
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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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if len(sizes) == 0 {
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sizes["other"] = 0
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}
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return sizes, 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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