give git-http-server requests ability to specify specific revision

---
type: change
message: give git-http-server requests ability to specify specific revision
change_hash: ABk9oYyjhioP0AKGoCd/G/y+foaAcwdeiCgkRzqrdhAk
credentials:
- type: pgp_signature
  pub_key_id: 95C46FA6A41148AC
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  account: mediocregopher
main
mediocregopher 4 years ago
parent d6f5bf2e38
commit ee19d2c37e
  1. 1
      .gitignore
  2. 49
      cmd/git-http-server/main.go

1
.gitignore vendored

@ -1 +1,2 @@
/dehub
*/git-http-server

@ -25,6 +25,32 @@ type handler struct {
tpl *template.Template
}
func (h handler) getTree(r *http.Request) (*object.Tree, int, error) {
rev := plumbing.Revision(r.FormValue("rev"))
if rev == "" {
rev = plumbing.Revision(h.branch)
}
hashPtr, err := h.repo.ResolveRevision(rev)
if err != nil {
return nil, 404, fmt.Errorf("resolving revision %q: %w", rev, err)
}
hash := *hashPtr // I don't know why ResolveRevision returns a pointer
commit, err := h.repo.CommitObject(hash)
if err != nil {
return nil, 404, fmt.Errorf("retrieving commit for revision %q (%q): %w",
rev, hash, err)
}
tree, err := h.repo.TreeObject(commit.TreeHash)
if err != nil {
return nil, 500, fmt.Errorf("fetching tree %q of commit %q: %v",
commit.TreeHash, hash, err)
}
return tree, 0, nil
}
func (h handler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
path := r.URL.Path
var mdPath string
@ -42,28 +68,9 @@ func (h handler) ServeHTTP(rw http.ResponseWriter, r *http.Request) {
path = strings.TrimPrefix(path, "/")
mdPath = strings.TrimPrefix(mdPath, "/")
ref, err := h.repo.Reference(h.branch, true)
if errors.Is(err, plumbing.ErrReferenceNotFound) {
http.Error(rw, "branch does not exist", 404)
return
} else if err != nil {
log.Printf("resolving reference %q: %v", h.branch, err)
http.Error(rw, "internal error", 500)
return
}
hash := ref.Hash()
commit, err := h.repo.CommitObject(hash)
tree, errStatusCode, err := h.getTree(r)
if err != nil {
log.Printf("fetching commit %q: %v", hash, err)
http.Error(rw, "internal error", 500)
return
}
tree, err := h.repo.TreeObject(commit.TreeHash)
if err != nil {
log.Printf("fetching tree %q of commit %q: %v", commit.TreeHash, hash, err)
http.Error(rw, "internal error", 500)
http.Error(rw, err.Error(), errStatusCode)
return
}

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