sublime text plugin to open file in different browser.

Default.sublime-keymap

[
	{ "keys": ["alt+o", "alt+f"], "command": "open_in_browser_alt", "args": {"browser": "firefox"} },
	{ "keys": ["alt+o", "alt+s"], "command": "open_in_browser_alt", "args": {"browser": "safari"} }
]

open_in_browser_alt.py

import sublime
import sublime_plugin
import subprocess
import tempfile

class OpenInBrowserAltCommand(sublime_plugin.ApplicationCommand):
	def run(self, **kwargs):
		browser = kwargs['browser']

		browser_cmd_map = {
			'safari': ['open', '-a', 'safari'],
			'firefox': ['open', '-a', 'firefox']
		}
		
		if browser in browser_cmd_map:
			cmd = browser_cmd_map[browser]
			view = sublime.Window.active_view(sublime.active_window())
			if view.file_name():
				cmd.append(view.file_name())
				subprocess.Popen(cmd)
			else:
				temp = tempfile.NamedTemporaryFile(delete=False)
				content = view.substr(sublime.Region(0, view.size()))
				temp.write(content.encode('utf-8'))
				temp.flush()
				cmd.append(temp.name)
				subprocess.Popen(cmd)
				temp.close()