feat(dir2config): defaults

vendor/gopkg.in/src-d/go-git.v4/plumbing/transport/client/client.go

@@ -0,0 +1,48 @@
+// Package client contains helper function to deal with the different client
+// protocols.
+package client
+
+import (
+	"fmt"
+
+	"gopkg.in/src-d/go-git.v4/plumbing/transport"
+	"gopkg.in/src-d/go-git.v4/plumbing/transport/file"
+	"gopkg.in/src-d/go-git.v4/plumbing/transport/git"
+	"gopkg.in/src-d/go-git.v4/plumbing/transport/http"
+	"gopkg.in/src-d/go-git.v4/plumbing/transport/ssh"
+)
+
+// Protocols are the protocols supported by default.
+var Protocols = map[string]transport.Transport{
+	"http":  http.DefaultClient,
+	"https": http.DefaultClient,
+	"ssh":   ssh.DefaultClient,
+	"git":   git.DefaultClient,
+	"file":  file.DefaultClient,
+}
+
+// InstallProtocol adds or modifies an existing protocol.
+func InstallProtocol(scheme string, c transport.Transport) {
+	if c == nil {
+		delete(Protocols, scheme)
+		return
+	}
+
+	Protocols[scheme] = c
+}
+
+// NewClient returns the appropriate client among of the set of known protocols:
+// http://, https://, ssh:// and file://.
+// See `InstallProtocol` to add or modify protocols.
+func NewClient(endpoint *transport.Endpoint) (transport.Transport, error) {
+	f, ok := Protocols[endpoint.Protocol]
+	if !ok {
+		return nil, fmt.Errorf("unsupported scheme %q", endpoint.Protocol)
+	}
+
+	if f == nil {
+		return nil, fmt.Errorf("malformed client for scheme %q, client is defined as nil", endpoint.Protocol)
+	}
+
+	return f, nil
+}