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// Go-git needs the packfile and the refs of the repo. The
// `NewGitUploadPackService` function returns an object that allows to
// download them.
//
// Go-git supports HTTP and SSH (see `KnownProtocols`) for downloading
// the packfile and the refs, but you can also install your own
// protocols (see `InstallProtocol` below).
//
// Each protocol has its own implementation of
// `NewGitUploadPackService`, but you should generally not use them
// directly, use this package's `NewGitUploadPackService` instead.
package clients
import (
"fmt"
"net/url"
"gopkg.in/src-d/go-git.v4/clients/common"
"gopkg.in/src-d/go-git.v4/clients/http"
"gopkg.in/src-d/go-git.v4/clients/ssh"
)
// DefaultProtocols are the protocols supported by default.
var DefaultProtocols = map[string]common.GitUploadPackService{
"http": http.NewGitUploadPackService(),
"https": http.NewGitUploadPackService(),
"ssh": ssh.NewGitUploadPackService(),
}
// KnownProtocols holds the current set of known protocols. Initially
// it gets its contents from `DefaultProtocols`. See `InstallProtocol`
// below to add or modify this variable.
var KnownProtocols = make(map[string]common.GitUploadPackService, len(DefaultProtocols))
func init() {
for k, v := range DefaultProtocols {
InstallProtocol(k, v)
}
}
// InstallProtocol adds or modifies an existing protocol.
func InstallProtocol(scheme string, service common.GitUploadPackService) {
if service == nil {
panic("nil service")
}
KnownProtocols[scheme] = service
}
// NewGitUploadPackService returns the appropriate upload pack service
// among of the set of known protocols: HTTP, SSH. See `InstallProtocol`
// to add or modify protocols.
func NewGitUploadPackService(repoURL string) (common.GitUploadPackService, error) {
u, err := url.Parse(repoURL)
if err != nil {
return nil, fmt.Errorf("invalid url %q", repoURL)
}
s, ok := KnownProtocols[u.Scheme]
if !ok {
return nil, fmt.Errorf("unsupported scheme %q", u.Scheme)
}
return s, nil
}
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