Sublime Text 3 Key Binding - Using variables - keyboard-shortcuts

Question

I'm trying to make a key binding to open up my favorite git application with current Sublime Text 3 $project_path folder, but somehow Sublime Text 3 doesn't convert the variables into the actual path.
Below you can find my current keyboard bindings file.
[
{
"keys": ["super+ctrl+alt+g"],
"command": "exec",
"args":
{
"shell_cmd": "open -a Gitbox $project_path"
}
}
]
$project_path doesn't convert into the actual project path... What am I doing wrong? Should I use a "Build System" instead? I looked into build systems but the problem there is that you would have to select a scope of files (for example *.rb) and I want this keyboard shortcut to be valid for all my projects/files.
In textmate2 the same shortcut was easily achieved by creating a new "Command" in the Bundle Editor and assigning a shortcut to it. The command then would be:
#!/usr/bin/ruby
exec "open -a Gitbox '#{ENV['TM_PROJECT_DIRECTORY']}'"
So I'm trying to achieve this same thing in Sublime Text 3 but something is going wrong.
Thanks!

Answer 1

Edit:
In the meantime I've built a generic plugin which gives you the ability to open any external application with an key stroke or via the command palette.
The plugin can be found here: ExternalTools
You can easily install it via the command palette cmd+shift+p
In your case you can go to Preferences / Key Bindings and add the following:
{
"keys": ["super+ctrl+alt+g"],
"command": "external_tools_run",
"args": { "cmd": ["open", "-a", "Gitbox", "$project_path"] }
}
I still down't own a mac so there is a chance that it is not working properly. In this case I would be pleased if you can give me a feedback (see Issues).
Original Answer:
I have spend a few hours searching on the same problem. After all I decided to create a small plugin with my own place holders.
import sublime, sublime_plugin
class RunAppCommand(sublime_plugin.WindowCommand):
def run(self, app_args):
app_args = self.fill_placeholder(app_args)
self.window.run_command("exec", {"cmd": app_args } )
def fill_placeholder(self, args):
res = []
proj_folder = self.get_project_folder()
for arg in args:
arg = arg.replace("$PROJECT_FOLDER", proj_folder)
res.append(arg)
return res
def get_project_folder(self,default=None):
proj_folder = ""
if self.window.project_file_name():
proj = self.window.project_data()
proj_folder_obj = self.get_first(proj["folders"])
if proj_folder_obj:
proj_folder = proj_folder_obj["path"]
elif self.window.folders():
proj_folder = self.get_first(self.window.folders())
if not proj_folder:
sublime.status_message("No project folder located")
return default
return proj_folder
def get_first(self, iterable, default=None):
if iterable:
for item in iterable:
return item
return default
After you have saved the code above to Packages/User/RunApp.py you can make your command work just by adding the following to your Default.sublime-keymap:
{ "keys": ["super+ctrl+alt+g"], "command": "run_app", "args": { "app_args": ["open", "-a", "Gitbox", "$PROJECT_FOLDER"]}}
This may be not the best solution but it works for me.

Answer 2

Also spent some hours searching here - thanks to fboers example i could finally
create a plugin myself.
So here's my solution: exec2 - expands all the sublime-variables as it should be and then forwards it to exec.
Save this as Packages/Exec2/Exec2.py.
import sublime
import sublime_plugin
class Exec2Command(sublime_plugin.WindowCommand):
def run(self, cmd):
new_cmd = [sublime.expand_variables (value, self.window.extract_variables()) for value in cmd]
self.window.run_command("exec", {"cmd": new_cmd } )
Example for the keybinding:
{ "keys": ["ctrl+F7"], "command": "exec2", "args" : { "cmd": ["V:/v4_tools/v4Doccer.exe", "--mdi", "${file}"]} },