Remove GitHub mentions in error messages

main.go

@@ -131,7 +131,7 @@ go get {{.GopkgPath}}
 </html>
 `))
 
-// Repo represents a source code repository on GitHub.
+// Repo represents a source code repository on a repo host.
 type Repo struct {
 	User         string
 	Name         string
@@ -186,7 +186,7 @@ var redirect = map[repoBase]repoBase{
 	{"", "fsnotify"}: {"fsnotify", "fsnotify"},
 }
 
-// GitHubRoot returns the repository root at GitHub, without a schema.
+// GitHubRoot returns the repository root, without a schema.
 func (repo *Repo) GitHubRoot() string {
 	if *userFlag != "" {
 		return *srcDomainFlag + "/" + *userFlag + "/" + repo.Name
@@ -197,7 +197,7 @@ func (repo *Repo) GitHubRoot() string {
 	return *srcDomainFlag + "/" + repo.User + "/" + repo.Name
 }
 
-// GitHubTree returns the repository tree name at GitHub for the selected version.
+// GitHubTree returns the repository tree name for the selected version.
 func (repo *Repo) GitHubTree() string {
 	if repo.FullVersion == InvalidVersion {
 		return "master"
@@ -304,7 +304,7 @@ func handler(resp http.ResponseWriter, req *http.Request) {
 	case nil:
 		// all ok
 	case ErrNoRepo:
-		sendNotFound(resp, "GitHub repository not found at https://%s", repo.GitHubRoot())
+		sendNotFound(resp, "Repository not found at https://%s", repo.GitHubRoot())
 		return
 	case ErrNoVersion:
 		major := repo.MajorVersion
@@ -314,11 +314,11 @@ func handler(resp http.ResponseWriter, req *http.Request) {
 			suffix = unstableSuffix
 		}
 		v := major.String()
-		sendNotFound(resp, `GitHub repository at https://%s has no branch or tag "%s%s", "%s.N%s" or "%s.N.M%s"`, repo.GitHubRoot(), v, suffix, v, suffix, v, suffix)
+		sendNotFound(resp, `Repository at https://%s has no branch or tag "%s%s", "%s.N%s" or "%s.N.M%s"`, repo.GitHubRoot(), v, suffix, v, suffix, v, suffix)
 		return
 	default:
 		resp.WriteHeader(http.StatusBadGateway)
-		resp.Write([]byte(fmt.Sprintf("Cannot obtain refs from GitHub: %v", err)))
+		resp.Write([]byte(fmt.Sprintf("Cannot obtain refs from repo host: %v", err)))
 		return
 	}
 
@@ -360,14 +360,14 @@ func proxyUploadPack(resp http.ResponseWriter, req *http.Request, repo *Repo) {
 	preq, err := http.NewRequest(req.Method, "https://"+repo.GitHubRoot()+"/git-upload-pack", req.Body)
 	if err != nil {
 		resp.WriteHeader(http.StatusInternalServerError)
-		resp.Write([]byte(fmt.Sprintf("Cannot create GitHub request: %v", err)))
+		resp.Write([]byte(fmt.Sprintf("Cannot create request: %v", err)))
 		return
 	}
 	preq.Header = req.Header
 	presp, err := bulkClient.Do(preq)
 	if err != nil {
 		resp.WriteHeader(http.StatusBadGateway)
-		resp.Write([]byte(fmt.Sprintf("Cannot obtain data pack from GitHub: %v", err)))
+		resp.Write([]byte(fmt.Sprintf("Cannot obtain data pack from repo host: %v", err)))
 		return
 	}
 	defer presp.Body.Close()
@@ -381,17 +381,17 @@ func proxyUploadPack(resp http.ResponseWriter, req *http.Request, repo *Repo) {
 	// Ignore errors. Dropped connections are usual and will make this fail.
 	_, err = io.Copy(resp, presp.Body)
 	if err != nil {
-		log.Printf("Error copying data from GitHub: %v", err)
+		log.Printf("Error copying data from repo host: %v", err)
 	}
 }
 
-var ErrNoRepo = errors.New("repository not found in GitHub")
-var ErrNoVersion = errors.New("version reference not found in GitHub")
+var ErrNoRepo = errors.New("repository not found on repo host")
+var ErrNoVersion = errors.New("version reference not found on repo host")
 
 func fetchRefs(repo *Repo) (data []byte, err error) {
 	resp, err := httpClient.Get("https://" + repo.GitHubRoot() + refsSuffix)
 	if err != nil {
-		return nil, fmt.Errorf("cannot talk to GitHub: %v", err)
+		return nil, fmt.Errorf("cannot talk to repo host: %v", err)
 	}
 	defer resp.Body.Close()
 
@@ -401,12 +401,12 @@ func fetchRefs(repo *Repo) (data []byte, err error) {
 	case 401, 404:
 		return nil, ErrNoRepo
 	default:
-		return nil, fmt.Errorf("error from GitHub: %v", resp.Status)
+		return nil, fmt.Errorf("error from repo host: %v", resp.Status)
 	}
 
 	data, err = ioutil.ReadAll(resp.Body)
 	if err != nil {
-		return nil, fmt.Errorf("error reading from GitHub: %v", err)
+		return nil, fmt.Errorf("error reading from repo host: %v", err)
 	}
 	return data, err
 }
@@ -432,7 +432,7 @@ func changeRefs(data []byte, major Version) (changed []byte, versions VersionLis
 		}
 		j = i + int(size)
 		if j > len(sdata) {
-			return nil, nil, fmt.Errorf("incomplete refs data received from GitHub")
+			return nil, nil, fmt.Errorf("incomplete refs data received from repo host")
 		}
 		if sdata[0] == '#' {
 			continue