Detecting when a file is opened via rsubl in Sublime (from Stack Overflow)

rsubl_listener.py

import sublime
import sublime_plugin

# From the Stack Overflow Question:
#    https://stackoverflow.com/questions/49897187/sublime-text-3-simple-plug-in-that-changes-color-theme-depending-on-remote-host


class ExampleCommand(sublime_plugin.TextCommand):
    def run(self, edit):
        view = self.view

        host = view.settings().get('remote_subl.host', None)
        print(host)
        
        if host == 'dsintmain':
            view.settings().set(
                'color_scheme',
                'Packages/Color Scheme - Default/Mariana.tmTheme')

            print(view.settings().get('color_scheme'))
        else:
            print("Not on remote_host")


class RSublOpenListener(sublime_plugin.EventListener):
    def on_load_async(self, view):
        if view.settings().has("remote_subl.host"):
            view.run_command("example")
            print("A file was just loaded from a remote place")

This is a version of the plugin from the linked SO question that shows how to detect when a file is opened from a remote host using the RemoteSubl package.

The original command has been modified slightly taking the advice of the original question answerer w/regards to removing the exception handling in favor of a default setting if the setting is not set. This allows potential code errors to show you a trace back in the console instead of being masked by the exception handling.

The addition here is the listener that detects when a file has been loaded that has the appropriate setting set to indicate that the above package opened it, which it logs to the console after running the original command.