117 lines
2.4 KiB
Go
117 lines
2.4 KiB
Go
|
// 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"
|
||
|
|
"math"
|
||
|
|
"path/filepath"
|
||
|
|
|
||
|
|
"github.com/src-d/enry/v2"
|
||
|
|
"gopkg.in/src-d/go-git.v4"
|
||
|
|
"gopkg.in/src-d/go-git.v4/plumbing"
|
||
|
|
"gopkg.in/src-d/go-git.v4/plumbing/object"
|
||
|
|
)
|
||
|
|
|
||
|
|
const fileSizeLimit int64 = 16 * 1024 * 1024
|
||
|
|
|
||
|
|
// GetLanguageStats calculates language stats for git repository at specified commit
|
||
|
|
func (repo *Repository) GetLanguageStats(commitID string) (map[string]float32, 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)
|
||
|
|
var total int64
|
||
|
|
err = tree.Files().ForEach(func(f *object.File) error {
|
||
|
|
if enry.IsVendor(f.Name) || enry.IsDotFile(f.Name) ||
|
||
|
|
enry.IsDocumentation(f.Name) || enry.IsConfiguration(f.Name) {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
// TODO: Use .gitattributes file for linguist overrides
|
||
|
|
|
||
|
|
language, ok := enry.GetLanguageByExtension(f.Name)
|
||
|
|
if !ok {
|
||
|
|
if language, ok = enry.GetLanguageByFilename(f.Name); !ok {
|
||
|
|
content, err := readFile(f, fileSizeLimit)
|
||
|
|
if err != nil {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
|
||
|
|
language = enry.GetLanguage(filepath.Base(f.Name), content)
|
||
|
|
if language == enry.OtherLanguage {
|
||
|
|
return nil
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if language != "" {
|
||
|
|
sizes[language] += f.Size
|
||
|
|
total += f.Size
|
||
|
|
}
|
||
|
|
|
||
|
|
return nil
|
||
|
|
})
|
||
|
|
if err != nil {
|
||
|
|
return nil, err
|
||
|
|
}
|
||
|
|
|
||
|
|
stats := make(map[string]float32)
|
||
|
|
var otherPerc float32 = 100
|
||
|
|
for language, size := range sizes {
|
||
|
|
perc := float32(math.Round(float64(size)/float64(total)*1000) / 10)
|
||
|
|
if perc <= 0.1 {
|
||
|
|
continue
|
||
|
|
}
|
||
|
|
otherPerc -= perc
|
||
|
|
stats[language] = perc
|
||
|
|
}
|
||
|
|
otherPerc = float32(math.Round(float64(otherPerc)*10) / 10)
|
||
|
|
if otherPerc > 0 {
|
||
|
|
stats["other"] = otherPerc
|
||
|
|
}
|
||
|
|
return stats, 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
|
||
|
|
}
|