xdg-default-chooser - Register default XDG application

shpelda · 2011-12-04 22:54:23

Hi archers.
I have python-glued together xdg-mime and dzen2, so that when xdg-open hits an mimetype that is not associated,
it fires up a dzen2 menu that allows user to choose between applications capable of handling this mimetype.
I find it quite useful:).

Improvement tips are welcome. Enjoy!

#!/usr/bin/python
# xdg-default-chooser
# A simple script that fires up a dzen2 menu allowing user to 
# register default XDG application for a file passed as argv[1]
# requires dzen2 to run
# 
# USAGE: setup environment variable BROWSER so that it points to xdg-default-chooser.py 
#             This will cause xdg-open to launch xdg-default-chooser.py instead of attempting 
#             to open file in a browser. 
#
# by shpelda at gmail dot com

from os import environ,walk
from os.path import join
from re import sub
from sys import argv
from subprocess import check_output 
from tempfile import NamedTemporaryFile as tempfile

def maxlen(array_of_string):
    mx=-1
    for x in array_of_string:
        if mx < len(x):
            mx=len(x)
    return mx

entries=[]
mime=check_output(["xdg-mime","query","filetype",argv[1]])
mime=mime.decode('us-ascii').strip()
mime=sub(r'([^;]*);.*',r'\1',mime)
mime='%s'%mime
for xdg_data in environ['XDG_DATA_DIRS'].split(':')\
                + [environ['XDG_DATA_HOME']]:
    for root, dirs, files in walk(xdg_data+'/applications'):
        for filename in files:
            if not filename.endswith('.desktop'):
                continue
            absfile=join(root, filename)
            with open(absfile) as f:
                for row in f:
                    if row.startswith('MimeType'):   
                       if mime in row:
                           entries.append(filename) 
entries.sort()
result=None
with tempfile() as w:
    w.write(bytes('%s\n'%mime,'us-ascii'))
    for e in entries:
        w.write(bytes('%s\n'%e,'us-ascii'))
    w.flush()
    # dzen2 -m -p -l 5 -e 'entertitle=uncollapse,grabkeys,grabmouse;button1=menuprint,exit;button4=scrollup;button5=scrolldown;'
    with open(w.name) as r: 
       result=check_output(['dzen2','-m','-p','-l','%s'%len(entries)
                        ,'-w','%s'%(maxlen(entries)*10)#FIXME magic
                        ,'-e','entertitle=uncollapse,grabkeys,grabmouse;button1=menuprint,exit;button4=scrollup;button5=scrolldown;']
                        ,stdin=r)   
if not result:
    raise "Nothing selected"
result=result.decode('us-ascii').strip()
check_output(['xdg-mime','default',result,mime])
check_output(['xdg-open',argv[1]])

Last edited by shpelda (2011-12-05 12:44:45)

haikuhacker · 2011-12-25 17:08:42

  File "./xdg-chooser", line 28, in <module>
    mime=check_output(["xdg-mime","query","filetype",argv[1]])
IndexError: list index out of range

shpelda · 2011-12-27 15:22:59

hey, yes.
This is just a glue. You have to pass it a file as command line argument (as xdg-open would).

Arch Linux

#1 2011-12-04 22:54:23

xdg-default-chooser - Register default XDG application

#2 2011-12-25 17:08:42

Re: xdg-default-chooser - Register default XDG application

#3 2011-12-27 15:22:59

Re: xdg-default-chooser - Register default XDG application

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