copy to clipboard ipython magic -- linux only

clip_magic.py

"""
Add copy to clipboard from IPython!
To install, just copy it to your profile/startup directory, typically:

    ~/.ipython/profile_default/startup/

Example usage:

    %clip hello world
    # will store "hello world"
    a = [1, 2, 3]
    %clip a
    # will store "[1, 2, 3]"

You can also use it with cell magic

    In [1]: %%clip
       ...: Even multi
       ...: lines
       ...: work!
       ...:

If you don't have a variable named 'clip' you can rely on automagic:

    clip hey man
    a = [1, 2, 3]
    clip a


This version removes the dependency of AppKit, but maintains compatibility with linux and osx.
Using ideas from: https://gist.github.com/vpontis/46e5d3154cda92ce3e0f


This is a fork of https://gist.github.com/bwagner/270da7c7d31af7ffaca32674557fc172
The function `_get_implementation` was not working, so instead of fixing the issue I simply removed it,
since I only use Linux anyway.

I had to add `universal_newlines=True` to the Popen call. This is for python < 3.7.
Use `text=True` for python >= 3.7.

Also, I changed xsel to operate on clipboard selection instead of primary.


"""

import sys
from subprocess import Popen, PIPE

from IPython.core.magic import register_line_cell_magic

def _copy_to_clipboard(arg):
    arg = str(globals().get(arg) or arg)

    p = Popen(['xsel', '-ib'], stdin=PIPE, universal_newlines=True) # Read note above
    p.communicate(arg)

    print('Copied to clipboard!')

@register_line_cell_magic
def clip(line, cell=None):
    if line and cell:
        cell = '\n'.join((line, cell))

    _copy_to_clipboard(cell or line)

# We delete it to avoid name conflicts for automagic to work
del clip