mirror of
https://github.com/go-gitea/gitea
synced 2024-08-18 05:10:41 +02:00
remove log() func from gogs times and switch to proper logging Signed-off-by: Andrew Thornton <art27@cantab.net> Co-authored-by: Andrew Thornton <art27@cantab.net>
157 lines
3.9 KiB
Go
157 lines
3.9 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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// +build !gogit
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package git
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import (
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"bufio"
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"bytes"
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"io"
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"math"
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"code.gitea.io/gitea/modules/analyze"
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"code.gitea.io/gitea/modules/log"
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"github.com/go-enry/go-enry/v2"
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)
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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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// We will feed the commit IDs in order into cat-file --batch, followed by blobs as necessary.
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// so let's create a batch stdin and stdout
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batchStdinWriter, batchReader, cancel := repo.CatFileBatch()
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defer cancel()
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writeID := func(id string) error {
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_, err := batchStdinWriter.Write([]byte(id + "\n"))
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return err
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}
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if err := writeID(commitID); err != nil {
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return nil, err
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}
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shaBytes, typ, size, err := ReadBatchLine(batchReader)
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if typ != "commit" {
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log.Debug("Unable to get commit for: %s. Err: %v", commitID, err)
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return nil, ErrNotExist{commitID, ""}
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}
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sha, err := NewIDFromString(string(shaBytes))
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if err != nil {
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log.Debug("Unable to get commit for: %s. Err: %v", commitID, err)
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return nil, ErrNotExist{commitID, ""}
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}
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commit, err := CommitFromReader(repo, sha, io.LimitReader(batchReader, size))
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if err != nil {
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log.Debug("Unable to get commit for: %s. Err: %v", commitID, err)
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return nil, err
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}
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if _, err = batchReader.Discard(1); err != nil {
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return nil, err
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}
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tree := commit.Tree
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entries, err := tree.ListEntriesRecursive()
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if err != nil {
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return nil, err
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}
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contentBuf := bytes.Buffer{}
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var content []byte
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sizes := make(map[string]int64)
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for _, f := range entries {
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contentBuf.Reset()
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content = contentBuf.Bytes()
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if f.Size() == 0 || analyze.IsVendor(f.Name()) || enry.IsDotFile(f.Name()) ||
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enry.IsDocumentation(f.Name()) || enry.IsConfiguration(f.Name()) {
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continue
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}
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// If content can not be read or file is too big just do detection by filename
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if f.Size() <= bigFileSize {
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if err := writeID(f.ID.String()); err != nil {
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return nil, err
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}
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_, _, size, err := ReadBatchLine(batchReader)
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if err != nil {
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log.Debug("Error reading blob: %s Err: %v", f.ID.String(), err)
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return nil, err
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}
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sizeToRead := size
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discard := int64(1)
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if size > fileSizeLimit {
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sizeToRead = fileSizeLimit
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discard = size - fileSizeLimit + 1
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}
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_, err = contentBuf.ReadFrom(io.LimitReader(batchReader, sizeToRead))
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if err != nil {
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return nil, err
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}
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content = contentBuf.Bytes()
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err = discardFull(batchReader, discard)
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if err != nil {
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return nil, err
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}
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}
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if enry.IsGenerated(f.Name(), content) {
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continue
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}
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// TODO: Use .gitattributes file for linguist overrides
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// FIXME: Why can't we split this and the IsGenerated tests to avoid reading the blob unless absolutely necessary?
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// - eg. do the all the detection tests using filename first before reading content.
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language := analyze.GetCodeLanguage(f.Name(), content)
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if language == enry.OtherLanguage || language == "" {
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continue
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}
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// group languages, such as Pug -> HTML; SCSS -> CSS
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group := enry.GetLanguageGroup(language)
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if group != "" {
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language = group
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}
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sizes[language] += f.Size()
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continue
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}
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// filter special languages unless they are the only language
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if len(sizes) > 1 {
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for language := range sizes {
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langtype := enry.GetLanguageType(language)
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if langtype != enry.Programming && langtype != enry.Markup {
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delete(sizes, language)
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}
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}
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}
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return sizes, nil
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}
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func discardFull(rd *bufio.Reader, discard int64) error {
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if discard > math.MaxInt32 {
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n, err := rd.Discard(math.MaxInt32)
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discard -= int64(n)
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if err != nil {
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return err
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}
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}
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for discard > 0 {
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n, err := rd.Discard(int(discard))
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discard -= int64(n)
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if err != nil {
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return err
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}
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}
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return nil
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}
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