70 lines
1.1 KiB
Go
70 lines
1.1 KiB
Go
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package walk
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import (
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"bufio"
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"context"
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"fmt"
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"io"
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"os"
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"os/exec"
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"path/filepath"
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"golang.org/x/sync/errgroup"
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)
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type git struct {
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root string
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}
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func (g *git) Root() string {
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return g.root
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}
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func (g *git) Walk(ctx context.Context, fn filepath.WalkFunc) error {
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r, w := io.Pipe()
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cmd := exec.Command("git", "-C", g.root, "ls-files")
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cmd.Stdout = w
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cmd.Stderr = w
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eg := errgroup.Group{}
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eg.Go(func() error {
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scanner := bufio.NewScanner(r)
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for scanner.Scan() {
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select {
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case <-ctx.Done():
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return ctx.Err()
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default:
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line := scanner.Text()
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path := filepath.Join(g.root, line)
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// stat the file
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info, err := os.Lstat(path)
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if err = fn(path, info, err); err != nil {
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return err
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}
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}
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}
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return nil
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})
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if err := w.CloseWithError(cmd.Run()); err != nil {
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return err
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}
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return eg.Wait()
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}
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func NewGit(root string) (Walker, error) {
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// check if we're dealing with a git repository
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cmd := exec.Command("git", "-C", root, "rev-parse", "--is-inside-work-tree")
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_, err := cmd.CombinedOutput()
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if err != nil {
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return nil, fmt.Errorf("%w: git repo check failed", err)
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}
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return &git{root}, nil
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}
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