[gitg/gnome-3-20] Add support for clone url in ssh short form

[Jesse van den Kieboom <jessevdk src gnome org>]

commit 3893182ede3e8ad73b3d4934f7dabb1cb9859092
Author: Jesse van den Kieboom <jessevdk gnome org>
Date:   Thu Aug 18 10:36:16 2016 +0200

    Add support for clone url in ssh short form
    
    https://bugzilla.gnome.org/show_bug.cgi?id=767064

 libgitg/gitg-credentials-manager.vala |   43 ++++++++++++++++++++++++++++----
 1 files changed, 37 insertions(+), 6 deletions(-)
---
diff --git a/libgitg/gitg-credentials-manager.vala b/libgitg/gitg-credentials-manager.vala
index d86ff28..78a8b1a 100644
--- a/libgitg/gitg-credentials-manager.vala
+++ b/libgitg/gitg-credentials-manager.vala
@@ -33,7 +33,9 @@ public class CredentialsManager
        private bool d_save_user_in_config;
        private string d_last_user;
        private Gee.HashMap<string, Ggit.Credtype> d_auth_tried;
+
        private static Secret.Schema s_secret_schema;
+       private static Regex s_ssh_short_form;
 
        static construct
        {
@@ -42,6 +44,11 @@ public class CredentialsManager
                                                    "scheme", Secret.SchemaAttributeType.STRING,
                                                    "host", Secret.SchemaAttributeType.STRING,
                                                    "user", Secret.SchemaAttributeType.STRING);
+
+               try
+               {
+                       s_ssh_short_form = new Regex("^(?:[^: /@]+)@(?P<host>[^:]+)");
+               } catch (Error e) { stderr.printf("regex err: %s\n", e.message); }
        }
 
        public CredentialsManager(Ggit.Config? config, Gtk.Window window, bool save_user_in_config)
@@ -93,7 +100,11 @@ public class CredentialsManager
                AuthenticationLifeTime lifetime = AuthenticationLifeTime.FORGET;
 
                Idle.add(() => {
-                       var d = new AuthenticationDialog(url, username, d_auth_tried[username] != 0);
+                       // Skip SSH_KEY in terms of tried since that might just fail if
+                       // there is no key and that's not informative to the user
+                       var tried = d_auth_tried[username] & ~Ggit.Credtype.SSH_KEY;
+
+                       var d = new AuthenticationDialog(url, username, tried != 0);
                        d.set_transient_for(d_window);
 
                        response = (Gtk.ResponseType)d.run();
@@ -199,15 +210,35 @@ public class CredentialsManager
        {
                string? user;
 
-               var uri = new Soup.URI(url);
-               var host = uri.get_host();
+               string host = "local";
+               string scheme = "file";
 
-               if (!uri.uses_default_port())
+               if (!("://" in url))
                {
-                       host = @"$(host):$(uri.get_port())";
+                       MatchInfo minfo;
+
+                       if (s_ssh_short_form.match(url, 0, out minfo))
+                       {
+                               scheme = "ssh";
+                               host = minfo.fetch_named("host");
+                       }
                }
+               else
+               {
+                       var uri = new Soup.URI(url);
+
+                       if (uri != null)
+                       {
+                               host = uri.get_host();
 
-               var scheme = uri.get_scheme();
+                               if (!uri.uses_default_port())
+                               {
+                                       host = @"$(host):$(uri.get_port())";
+                               }
+               
+                               scheme = uri.get_scheme();
+                       }
+               }
 
                if (username == null)
                {