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Monorepo for Tangled forked from tangled.org/core
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import ( "context" "io" "path" "strings"
"github.com/go-enry/go-enry/v2" "github.com/go-git/go-git/v5/plumbing/object")
type LangBreakdown map[string]int64
const ( langContentLimit = 16 * 1024 // read up to 16 KB for language detection langSizeLimit = 1 * 1024 * 1024 // skip content read for blobs over 1 MB)
func (g *GitRepo) AnalyzeLanguages(ctx context.Context) (LangBreakdown, error) { sizes := make(map[string]int64) err := g.Walk(ctx, "", func(node object.TreeEntry, parent *object.Tree, root string) error { filepath := path.Join(root, node.Name)
if enry.IsVendor(filepath) || enry.IsDocumentation(filepath) || enry.IsDotFile(filepath) || enry.IsConfiguration(filepath) { return nil }
blob, err := object.GetBlob(g.r.Storer, node.Hash) if err != nil { return nil } sz := blob.Size
var content []byte if sz <= langSizeLimit { r, err := blob.Reader() if err != nil { return nil } content, _ = io.ReadAll(io.LimitReader(r, langContentLimit)) r.Close() }
if enry.IsGenerated(filepath, content) || enry.IsBinary(content) || strings.HasSuffix(filepath, "bun.lock") { return nil }
language := analyzeLanguage(node, content) if group := enry.GetLanguageGroup(language); group != "" { language = group }
langType := enry.GetLanguageType(language) if langType != enry.Programming && langType != enry.Markup { return nil }
sizes[language] += sz
return nil })
if err != nil { return nil, err }
return sizes, nil}
func analyzeLanguage(node object.TreeEntry, content []byte) string { language, ok := enry.GetLanguageByExtension(node.Name) if ok { return language }
language, ok = enry.GetLanguageByFilename(node.Name) if ok { return language }
if len(content) == 0 { return enry.OtherLanguage }
return enry.GetLanguage(node.Name, content)}