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#!/usr/bin/python
# Copyright (C) 2011 Arun Balasubramanian <med.diagnostix@gmail.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public License
# as published by the Free Software Foundation; either version 2.1
# of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc.,
# 59 Temple Place,
# Suite 330,
# Boston, MA 02111-1307 USA
'''
xlsatoms - list atoms on X server (see man xlsatoms)
sample program using python Xlib that mimics the standard xlsatoms utility
additional capability is to match against regular expressions for atoms
'''
import sys
import os
# Change path so we find Xlib
sys.path.append(os.path.join(os.path.dirname(__file__), '..'))
import re
from Xlib import display, error
from optparse import OptionParser
parser = OptionParser()
parser.add_option("-d","--display",dest="display",help="This option specifies the X server to which to connect",metavar="dpy",default=None)
parser.add_option("-n","--name",dest="name",help="This option specifies the name of an atom to list. If the atom does not exist, a message will be printed on the standard error.",metavar="string",default=None)
parser.add_option("-m","--match",dest="match_re",help="This option specifies a regular expression to match against name of an atom to list. If the atom does not exist, a message will be printed on the standard error.",metavar="reg-exp",default=None)
parser.add_option("-f","--format",dest="format",help="This option specifies a printf-style string used to list each atom <value,name> pair, printed in that order (value is an unsigned long and name is a char *). Xlsatoms will supply a newline at the end of each line. The default is %ld\\t%s.",metavar="string",default="%ld\t%s")
parser.add_option("-r","--range",dest="range",help="This option specifies the range of atom values to check. If low is not given, a value of 1 assumed. If high is not given, xlsatoms will stop at the first undefined atom at or above low.",metavar="[low]-[high]",default="1-")
(options, args) = parser.parse_args()
low = 1
high = 1
ec = error.CatchError(error.BadAtom)
d = display.Display(options.display)
def print_atom(print_format,atom,value):
print(print_format%(atom,value))
def list_atoms(d,re_obj,low,high):
while(low <= high):
try:
val = d.get_atom_name(low)
if (re_obj == None) :
print_atom(options.format,low,val)
elif re_obj.match(val) != None:
print_atom(options.format,low,val)
low += 1
except:
sys.exit(0)
if options.name != None:
try:
atom = d.intern_atom(options.name)
val = d.get_atom_name(atom)
print_atom(options.format,atom,val)
except:
sys.stderr.write('xlsatoms: no atom named "%s" on server "%s"'%(options.name,options.display))
sys.stderr.write("\n")
sys.exit(1)
sys.exit(0)
rangeVals = options.range.split("-")
if rangeVals[0] != "":
low = int(rangeVals[0])
if rangeVals[1] != "":
high = int(rangeVals[1])
else:
high = sys.maxint
if options.match_re != None:
re_obj = re.compile(options.match_re)
else:
re_obj = None
list_atoms(d,re_obj,low,high)
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