Adding first version that allows parsing the ssh config files for hosts

[grundprinzip]

This is the first proposal for #14 to include all hosts that are already configured in the ssh config file. Currently namespaces identified with "/" are not supported.

Let's discuss.

[grundprinzip]

I tried to address all your comments, with regards to filtering entries like * this was because my ssh config has an entry for special configuration of EC2 hosts and uses a * here to explicitly include all different possible subdomains.

[fitztrev]

I like this approach. I had considered removing the json config entirely but this might be better.

In the menuWillOpen trigger, there's a check to see if the config file has been updated. If it has, it'll refresh the menu with the new content. I like that because the user doesn't have to do anything (hit a "reload" button, or restart the app) to get the changes to show up. Could that be added for this as well?

One of the things I noticed was the same problem I had when figuring how to construct the JSON. Dictionary containers don't honor the order of their contents. So the hosts in the config file aren't guaranteed to end up in that same order. I ended up making the hosts an array with each value being its own object. Not sure if this is the best way to do it, but I think we may want respect the order that the user sets in their config.

[grundprinzip]

For the check of the last changed date I will add this in the same way as it is done for the json file.

For the order of the entries I basically extract all keys from the dictionary and sort them so the order in the menu is always alphabetically which seemed to me like the right thing to do...

[fitztrev]

👍 Agreed. Alphabetical is good.

[grundprinzip]

Ok, I added the mtime handling and squashed the commit so its nice and mergable :)

[fitztrev]

Awesome, thanks. :)

When testing, needUpdateFor was returning that ~/.ssh/config did not exist. When I changed it to the following in menuWillOpen it worked:

[NSHomeDirectory() stringByAppendingPathComponent:@".ssh/config"]

Also, I don't use the global ssh_config on my machine but mine's located at /etc/ssh_config. Not sure how it is for other people or how they use it.

[grundprinzip]

You're right, there was a bug in the needUpdateFor method as it was not expanding the tilde in the path, I fixed that. Same goes for the system location of the ssh config. The man page states that the ssh config is located in /etc/ssh/ssh_config but it actually is right where you pointed. I didn't check because I assumed it would be empty.

[fitztrev]

👍 Thanks!!