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@ -24,6 +24,7 @@ import (
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"strconv"
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"strconv"
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"strings"
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"strings"
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"syscall"
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"syscall"
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"time"
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)
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)
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type PullRequest struct {
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type PullRequest struct {
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@ -58,16 +59,24 @@ func (u *User) IsTrusted() bool {
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return allowedMembers[u.Login]
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return allowedMembers[u.Login]
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}
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}
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const pullsPrefix = "https://api.github.com/repos/matrix-org/matrix-doc/pulls"
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const (
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pullsPrefix = "https://api.github.com/repos/matrix-org/matrix-doc/pulls"
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matrixDocCloneURL = "https://github.com/matrix-org/matrix-doc.git"
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)
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func gitClone(url string, shared bool) (string, error) {
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directory := path.Join("/tmp/matrix-doc", strconv.FormatInt(rand.Int63(), 10))
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cmd := exec.Command("git", "clone", url, directory)
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if shared {
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cmd.Args = append(cmd.Args, "--shared")
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}
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func gitClone(url string) (string, error) {
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dst := path.Join("/tmp/matrix-doc", strconv.FormatInt(rand.Int63(), 10))
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cmd := exec.Command("git", "clone", url, dst)
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err := cmd.Run()
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err := cmd.Run()
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if err != nil {
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if err != nil {
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return "", fmt.Errorf("error cloning repo: %v", err)
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return "", fmt.Errorf("error cloning repo: %v", err)
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}
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}
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return dst, nil
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return directory, nil
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}
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}
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func gitCheckout(path, sha string) error {
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func gitCheckout(path, sha string) error {
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@ -80,6 +89,16 @@ func gitCheckout(path, sha string) error {
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return nil
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return nil
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}
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}
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func gitFetch(path string) error {
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cmd := exec.Command("git", "fetch")
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cmd.Dir = path
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err := cmd.Run()
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if err != nil {
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return fmt.Errorf("error fetching repo: %v", err)
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}
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return nil
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}
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func lookupPullRequest(url url.URL, pathPrefix string) (*PullRequest, error) {
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func lookupPullRequest(url url.URL, pathPrefix string) (*PullRequest, error) {
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if !strings.HasPrefix(url.Path, pathPrefix+"/") {
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if !strings.HasPrefix(url.Path, pathPrefix+"/") {
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return nil, fmt.Errorf("invalid path passed: %s expect %s/123", url.Path, pathPrefix)
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return nil, fmt.Errorf("invalid path passed: %s expect %s/123", url.Path, pathPrefix)
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@ -119,10 +138,18 @@ func writeError(w http.ResponseWriter, code int, err error) {
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io.WriteString(w, fmt.Sprintf("%v\n", err))
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io.WriteString(w, fmt.Sprintf("%v\n", err))
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}
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}
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type server struct {
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matrixDocCloneURL string
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}
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// generateAt generates spec from repo at sha.
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// generateAt generates spec from repo at sha.
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// Returns the path where the generation was done.
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// Returns the path where the generation was done.
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func generateAt(repo, sha string) (dst string, err error) {
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func (s *server) generateAt(sha string) (dst string, err error) {
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dst, err = gitClone(repo)
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err = gitFetch(s.matrixDocCloneURL)
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if err != nil {
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return
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}
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dst, err = gitClone(s.matrixDocCloneURL, true)
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if err != nil {
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if err != nil {
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return
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return
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}
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}
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@ -135,12 +162,10 @@ func generateAt(repo, sha string) (dst string, err error) {
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return
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return
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}
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}
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func serveSpec(w http.ResponseWriter, req *http.Request) {
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func (s *server) serveSpec(w http.ResponseWriter, req *http.Request) {
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var cloneURL string
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var sha string
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var sha string
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if strings.ToLower(req.URL.Path) == "/spec/head" {
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if strings.ToLower(req.URL.Path) == "/spec/head" {
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cloneURL = "https://github.com/matrix-org/matrix-doc.git"
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sha = "HEAD"
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sha = "HEAD"
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} else {
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} else {
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pr, err := lookupPullRequest(*req.URL, "/spec")
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pr, err := lookupPullRequest(*req.URL, "/spec")
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@ -155,11 +180,10 @@ func serveSpec(w http.ResponseWriter, req *http.Request) {
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writeError(w, 403, err)
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writeError(w, 403, err)
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return
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return
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}
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}
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cloneURL = pr.Head.Repo.CloneURL
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sha = pr.Head.SHA
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sha = pr.Head.SHA
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}
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}
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dst, err := generateAt(cloneURL, sha)
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dst, err := s.generateAt(sha)
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defer os.RemoveAll(dst)
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defer os.RemoveAll(dst)
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if err != nil {
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if err != nil {
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writeError(w, 500, err)
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writeError(w, 500, err)
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@ -181,7 +205,7 @@ func checkAuth(pr *PullRequest) error {
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return nil
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return nil
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}
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}
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func serveRSTDiff(w http.ResponseWriter, req *http.Request) {
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func (s *server) serveRSTDiff(w http.ResponseWriter, req *http.Request) {
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pr, err := lookupPullRequest(*req.URL, "/diff/rst")
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pr, err := lookupPullRequest(*req.URL, "/diff/rst")
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if err != nil {
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if err != nil {
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writeError(w, 400, err)
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writeError(w, 400, err)
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@ -195,14 +219,14 @@ func serveRSTDiff(w http.ResponseWriter, req *http.Request) {
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return
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return
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}
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}
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base, err := generateAt(pr.Base.Repo.CloneURL, pr.Base.SHA)
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base, err := s.generateAt(pr.Base.SHA)
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defer os.RemoveAll(base)
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defer os.RemoveAll(base)
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if err != nil {
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if err != nil {
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writeError(w, 500, err)
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writeError(w, 500, err)
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return
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return
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}
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}
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head, err := generateAt(pr.Head.Repo.CloneURL, pr.Head.SHA)
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head, err := s.generateAt(pr.Head.SHA)
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defer os.RemoveAll(head)
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defer os.RemoveAll(head)
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if err != nil {
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if err != nil {
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writeError(w, 500, err)
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writeError(w, 500, err)
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@ -219,7 +243,7 @@ func serveRSTDiff(w http.ResponseWriter, req *http.Request) {
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w.Write(diff.Bytes())
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w.Write(diff.Bytes())
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}
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}
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func serveHTMLDiff(w http.ResponseWriter, req *http.Request) {
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func (s *server) serveHTMLDiff(w http.ResponseWriter, req *http.Request) {
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pr, err := lookupPullRequest(*req.URL, "/diff/html")
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pr, err := lookupPullRequest(*req.URL, "/diff/html")
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if err != nil {
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if err != nil {
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writeError(w, 400, err)
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writeError(w, 400, err)
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@ -233,14 +257,14 @@ func serveHTMLDiff(w http.ResponseWriter, req *http.Request) {
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return
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return
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}
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}
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base, err := generateAt(pr.Base.Repo.CloneURL, pr.Base.SHA)
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base, err := s.generateAt(pr.Base.SHA)
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defer os.RemoveAll(base)
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defer os.RemoveAll(base)
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if err != nil {
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if err != nil {
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writeError(w, 500, err)
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writeError(w, 500, err)
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return
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return
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}
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}
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head, err := generateAt(pr.Head.Repo.CloneURL, pr.Head.SHA)
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head, err := s.generateAt(pr.Head.SHA)
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defer os.RemoveAll(head)
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defer os.RemoveAll(head)
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if err != nil {
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if err != nil {
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writeError(w, 500, err)
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writeError(w, 500, err)
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@ -327,9 +351,15 @@ func main() {
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"Kegsay": true,
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"Kegsay": true,
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"NegativeMjark": true,
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"NegativeMjark": true,
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}
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}
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http.HandleFunc("/spec/", serveSpec)
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rand.Seed(time.Now().Unix())
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http.HandleFunc("/diff/rst/", serveRSTDiff)
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masterCloneDir, err := gitClone(matrixDocCloneURL, false)
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http.HandleFunc("/diff/html/", serveHTMLDiff)
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if err != nil {
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log.Fatal(err)
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}
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s := server{masterCloneDir}
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http.HandleFunc("/spec/", s.serveSpec)
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http.HandleFunc("/diff/rst/", s.serveRSTDiff)
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http.HandleFunc("/diff/html/", s.serveHTMLDiff)
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http.HandleFunc("/healthz", serveText("ok"))
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http.HandleFunc("/healthz", serveText("ok"))
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http.HandleFunc("/", listPulls)
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http.HandleFunc("/", listPulls)
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log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", *port), nil))
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log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", *port), nil))
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