You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
122 lines
2.6 KiB
122 lines
2.6 KiB
// Copyright 2020 The Gitea Authors. All rights reserved.
|
|
// Use of this source code is governed by a MIT-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package git
|
|
|
|
import (
|
|
"bytes"
|
|
"io"
|
|
"io/ioutil"
|
|
|
|
"code.gitea.io/gitea/modules/analyze"
|
|
|
|
"github.com/go-enry/go-enry/v2"
|
|
"github.com/go-git/go-git/v5"
|
|
"github.com/go-git/go-git/v5/plumbing"
|
|
"github.com/go-git/go-git/v5/plumbing/object"
|
|
)
|
|
|
|
const fileSizeLimit int64 = 16 * 1024 * 1024
|
|
|
|
// specialLanguages defines list of languages that are excluded from the calculation
|
|
// unless they are the only language present in repository. Only languages which under
|
|
// normal circumstances are not considered to be code should be listed here.
|
|
var specialLanguages = []string{
|
|
"XML",
|
|
"JSON",
|
|
"TOML",
|
|
"YAML",
|
|
"INI",
|
|
"SVG",
|
|
"Text",
|
|
"Markdown",
|
|
}
|
|
|
|
// GetLanguageStats calculates language stats for git repository at specified commit
|
|
func (repo *Repository) GetLanguageStats(commitID string) (map[string]int64, error) {
|
|
r, err := git.PlainOpen(repo.Path)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
rev, err := r.ResolveRevision(plumbing.Revision(commitID))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
commit, err := r.CommitObject(*rev)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
tree, err := commit.Tree()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
sizes := make(map[string]int64)
|
|
err = tree.Files().ForEach(func(f *object.File) error {
|
|
if f.Size == 0 || enry.IsVendor(f.Name) || enry.IsDotFile(f.Name) ||
|
|
enry.IsDocumentation(f.Name) || enry.IsConfiguration(f.Name) {
|
|
return nil
|
|
}
|
|
|
|
// If content can not be read just do detection by filename
|
|
content, _ := readFile(f, fileSizeLimit)
|
|
if enry.IsGenerated(f.Name, content) {
|
|
return nil
|
|
}
|
|
|
|
// TODO: Use .gitattributes file for linguist overrides
|
|
|
|
language := analyze.GetCodeLanguage(f.Name, content)
|
|
if language == enry.OtherLanguage || language == "" {
|
|
return nil
|
|
}
|
|
|
|
// group languages, such as Pug -> HTML; SCSS -> CSS
|
|
group := enry.GetLanguageGroup(language)
|
|
if group != "" {
|
|
language = group
|
|
}
|
|
|
|
sizes[language] += f.Size
|
|
|
|
return nil
|
|
})
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
// filter special languages unless they are the only language
|
|
if len(sizes) > 1 {
|
|
for _, language := range specialLanguages {
|
|
delete(sizes, language)
|
|
}
|
|
}
|
|
|
|
return sizes, nil
|
|
}
|
|
|
|
func readFile(f *object.File, limit int64) ([]byte, error) {
|
|
r, err := f.Reader()
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer r.Close()
|
|
|
|
if limit <= 0 {
|
|
return ioutil.ReadAll(r)
|
|
}
|
|
|
|
size := f.Size
|
|
if limit > 0 && size > limit {
|
|
size = limit
|
|
}
|
|
buf := bytes.NewBuffer(nil)
|
|
buf.Grow(int(size))
|
|
_, err = io.Copy(buf, io.LimitReader(r, limit))
|
|
return buf.Bytes(), err
|
|
}
|