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|
package walker
import (
"os"
"path/filepath"
"strings"
ignore "github.com/sabhiram/go-gitignore"
)
// DefaultIgnore patterns applied to all walks
var DefaultIgnore = []string{
"vendor/",
"node_modules/",
".git/",
".codevec/",
}
// Walker walks a directory tree finding files to index
type Walker struct {
root string
extensions []string // e.g., [".go"]
gitignore *ignore.GitIgnore
}
// New creates a walker for the given root directory
func New(root string, extensions []string) (*Walker, error) {
root, err := filepath.Abs(root)
if err != nil {
return nil, err
}
w := &Walker{
root: root,
extensions: extensions,
}
// Load .gitignore if present
gitignorePath := filepath.Join(root, ".gitignore")
if _, err := os.Stat(gitignorePath); err == nil {
gi, err := ignore.CompileIgnoreFile(gitignorePath)
if err == nil {
w.gitignore = gi
}
}
return w, nil
}
// Walk returns all matching files in the directory tree
func (w *Walker) Walk() ([]string, error) {
var files []string
err := filepath.WalkDir(w.root, func(path string, d os.DirEntry, err error) error {
if err != nil {
return err
}
// Get path relative to root for ignore matching
relPath, err := filepath.Rel(w.root, path)
if err != nil {
return err
}
// Skip default ignored directories
if d.IsDir() {
for _, pattern := range DefaultIgnore {
if strings.HasPrefix(relPath+"/", pattern) || relPath+"/" == pattern {
return filepath.SkipDir
}
}
}
// Skip if matched by .gitignore
if w.gitignore != nil && w.gitignore.MatchesPath(relPath) {
if d.IsDir() {
return filepath.SkipDir
}
return nil
}
// Skip directories and non-matching extensions
if d.IsDir() {
return nil
}
if !w.matchesExtension(path) {
return nil
}
files = append(files, path)
return nil
})
return files, err
}
func (w *Walker) matchesExtension(path string) bool {
if len(w.extensions) == 0 {
return true
}
ext := filepath.Ext(path)
for _, e := range w.extensions {
if ext == e {
return true
}
}
return false
}
|
