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# This file is part of TALER
# (C) 2016 INRIA
#
# TALER is free software; you can redistribute it and/or modify it under the
# terms of the GNU Affero General Public License as published by the Free Software
# Foundation; either version 3, or (at your option) any later version.
#
# TALER 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# TALER; see the file COPYING. If not, If not, see <http://www.gnu.org/licenses/>
#
# @author Florian Dold
"""
Access to GNUnet-style configuration for Taler.
Requires the taler-config utility from the
GNU Taler exchange to be available in $PATH
"""
import shutil
import subprocess
# FIXME: eventually this should use a python
# parser and not shell out to taler-config
cmd = "taler-config"
class TalerConfig:
def __init__(self, filename=None):
self.filename = filename
def _check_prog(self):
prog = shutil.which(cmd)
if prog is None:
raise Exception("taler-config command not found in $PATH")
def _run(self, *args):
p = subprocess.Popen([cmd] + list(args), stdout=subprocess.PIPE)
(out, err) = p.communicate()
r = p.wait()
return r, out.decode('utf-8').rstrip('\n')
def get_string(self, section, option):
self._check_prog()
args = ['-s', section, '-o', option]
if self.filename is not None:
args.append('-c')
args.append(self.filename)
r, v = self._run(*args)
if r != 0:
raise Exception("error running taler-config")
return v
def get_filename(self, section, option):
self._check_prog()
args = ['-f', '-s', section, '-o', option]
if self.filename is not None:
args.append('-c')
args.append(self.filename)
r, v = self._run(*args)
if r != 0:
raise Exception("error running taler-config")
return v
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