Git: Add new class GitRemote

Allows to split a remote URL and performs
some validation checks on the elements.

Change-Id: I048373076b1a1553fdd7bed2986a41cc087138b0
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/gitclient.cpp

@@ -3191,6 +3191,39 @@ void GitClient::StashInfo::end()
     m_stashResult = NotStashed;
 }
 
+// GitRemote
+
+GitRemote::GitRemote(const QString &url)
+{
+    static const QRegularExpression remotePattern(
+                "^(?:(?<protocol>[^:]+)://)?(?:(?<user>[^@]+)@)?(?<host>[^:/]+)"
+                "(?::(?<port>\\d+))?:?(?<path>/.*)$");
+
+    if (url.isEmpty())
+        return;
+
+    // Check for local remotes (refer to the root or relative path)
+    // On Windows, local paths typically starts with <drive>:
+    if (url.startsWith('/') || url.startsWith('.')
+            || (HostOsInfo::isWindowsHost() && url[1] == ':')) {
+        protocol = "file";
+        path = QDir::fromNativeSeparators(url);
+        isValid = QDir(path).exists() || QDir(path + ".git").exists();
+        return;
+    }
+
+    const QRegularExpressionMatch match = remotePattern.match(url);
+    if (!match.hasMatch())
+        return;
+
+    protocol = match.captured("protocol");
+    userName = match.captured("user");
+    host     = match.captured("host");
+    port     = match.captured("port").toUShort();
+    path     = match.captured("path");
+    isValid  = true;
+}
+
 } // namespace Internal
 } // namespace Git