Merge pull request #56 from stufi/issue/42-no-password-supplied

This should address the issues described in [#42]

lib/match/change_password.rb

@@ -2,6 +2,7 @@ module Match
   class ChangePassword
     def self.update(params: nil, from: nil, to: nil)
       to ||= ChangePassword.ask_password("New passphrase for Git Repo: ")
+      from ||= ChangePassword.ask_password("Old passphrase for Git Repo: ")
       GitHelper.clear_changes
       workspace = GitHelper.clone(params[:git_url], params[:shallow_clone], manual_password: from)
       Encrypt.new.clear_password(params[:git_url])
@@ -12,8 +13,8 @@ def self.update(params: nil, from: nil, to: nil)
     end
 
     def self.ask_password(msg = "Passphrase for Git Repo: ")
-      password = ""
-      while password.to_s.length == 0
+      password = nil
+      while password == nil
         password = ask(msg.yellow) { |q| q.echo = "*" }
         password2 = ask("Type passphrase again: ".yellow) { |q| q.echo = "*" }
         if password != password2

lib/match/encrypt.rb

@@ -71,7 +71,7 @@ def iterate(source_path)
     end
 
     def crypt(path: nil, password: nil, encrypt: true)
-      if password.to_s.strip.length == 0
+      if password.to_s.strip.length == 0 && encrypt
         UI.user_error!("No password supplied")
       end