How to read Mozrepl Javascript result into a Python Variable?

Question

With Mozrepl addon in Firefox and Python I do:

>>> import telnetlib
>>> tn = telnetlib.Telnet(r'127.0.0.1', 4242, 5)
>>> tn.read_eager()
'\nWelcome to MozRepl.\n\n - If you get stuck at the "'
>>> tn.read_until("repl> ")
...snip...
>>> tn.write(r'alert(window.content.location.href)'+"\n")

and I get an alert box with the URL of the active tab. But how do I read that URL into a python variable? Something like tn.write(r';var zz = window.content.location.href'+ "\n") but that doesn't get it into python.

I would be grateful for help.

Answer 1

This can be done using the pymozrepl module.

>>> import mozrepl
>>> repl = mozrepl.Mozrepl()
>>> 
>>> repl.execute('alert(window.content.location.href)')
>>> 
>>> #or
>>> from mozrepl.type import Raw
>>> repl.execute('alert')(Raw('window.content.location.href'))
>>> 
>>> #or
>>> repl.execute('alert')(repl.execute('window').content.location.href)
>>> 
>>> #or
>>> repl.execute('alert')(repl.execute('window.content.location.href'))
>>> 
>>> #pymozrepl module also can get javascript value.
>>> repl.execute('repl._name')
'repl'

Answer 2

Bit late in answering but hopefully useful...

You just read from the telnet connection again and mozrepl's output will be there. Be sure to watch out for newlines returned and quoted strings.