mirror of
https://codeberg.org/forgejo/forgejo
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ae0635fd61
If a documentation file is marked with a `linguist-documentation=false` attribute, include it in language stats. However, make sure that we do *not* include documentation languages as fallback. Added a new test case to exercise the formerly buggy behaviour. Problem discovered while reviewing @KN4CK3R's tests from gitea#29267. Signed-off-by: Gergely Nagy <forgejo@gergo.csillger.hu>
194 lines
5.3 KiB
Go
194 lines
5.3 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// Copyright 2024 The Forgejo Authors c/o Codeberg e.V.. All rights reserved.
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// SPDX-License-Identifier: MIT
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//go:build gogit
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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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"strings"
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"code.gitea.io/gitea/modules/analyze"
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"code.gitea.io/gitea/modules/optional"
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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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// 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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checker, deferable := repo.CheckAttributeReader(commitID)
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defer deferable()
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// sizes contains the current calculated size of all files by language
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sizes := make(map[string]int64)
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// by default we will only count the sizes of programming languages or markup languages
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// unless they are explicitly set using linguist-language
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includedLanguage := map[string]bool{}
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// or if there's only one language in the repository
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firstExcludedLanguage := ""
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firstExcludedLanguageSize := int64(0)
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isTrue := func(v optional.Option[bool]) bool {
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return v.ValueOrDefault(false)
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}
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isFalse := func(v optional.Option[bool]) bool {
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return !v.ValueOrDefault(true)
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}
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err = tree.Files().ForEach(func(f *object.File) error {
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if f.Size == 0 {
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return nil
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}
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isVendored := optional.None[bool]()
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isGenerated := optional.None[bool]()
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isDocumentation := optional.None[bool]()
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isDetectable := optional.None[bool]()
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if checker != nil {
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attrs, err := checker.CheckPath(f.Name)
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if err == nil {
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isVendored = attributeToBool(attrs, "linguist-vendored")
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isGenerated = attributeToBool(attrs, "linguist-generated")
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isDocumentation = attributeToBool(attrs, "linguist-documentation")
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isDetectable = attributeToBool(attrs, "linguist-detectable")
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if language, has := attrs["linguist-language"]; has && language != "unspecified" && language != "" {
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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 len(group) != 0 {
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language = group
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}
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// this language will always be added to the size
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sizes[language] += f.Size
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return nil
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} else if language, has := attrs["gitlab-language"]; has && language != "unspecified" && language != "" {
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// strip off a ? if present
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if idx := strings.IndexByte(language, '?'); idx >= 0 {
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language = language[:idx]
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}
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if len(language) != 0 {
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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 len(group) != 0 {
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language = group
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}
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// this language will always be added to the size
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sizes[language] += f.Size
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return nil
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}
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}
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}
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}
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if isFalse(isDetectable) || isTrue(isVendored) || isTrue(isDocumentation) ||
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(!isFalse(isVendored) && analyze.IsVendor(f.Name)) ||
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enry.IsDotFile(f.Name) ||
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enry.IsConfiguration(f.Name) ||
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(!isFalse(isDocumentation) && enry.IsDocumentation(f.Name)) {
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return nil
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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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var content []byte
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if f.Size <= bigFileSize {
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content, _ = readFile(f, fileSizeLimit)
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}
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if !isTrue(isGenerated) && 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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return nil
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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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included, checked := includedLanguage[language]
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langType := enry.GetLanguageType(language)
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if !checked {
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included = langType == enry.Programming || langType == enry.Markup
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if !included && (isTrue(isDetectable) || (langType == enry.Prose && isFalse(isDocumentation))) {
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included = true
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}
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includedLanguage[language] = included
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}
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if included {
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sizes[language] += f.Size
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} else if len(sizes) == 0 && (firstExcludedLanguage == "" || firstExcludedLanguage == language) {
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// Only consider Programming or Markup languages as fallback
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if !(langType == enry.Programming || langType == enry.Markup) {
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return nil
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}
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firstExcludedLanguage = language
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firstExcludedLanguageSize += 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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// If there are no included languages add the first excluded language
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if len(sizes) == 0 && firstExcludedLanguage != "" {
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sizes[firstExcludedLanguage] = firstExcludedLanguageSize
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}
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return mergeLanguageStats(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 io.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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