import os import re from subprocess import Popen, PIPE def find_command(cmd, path=None, pathext=None): if path is None: path = os.environ.get('PATH', []).split(os.pathsep) if isinstance(path, basestring): path = [path] # check if there are funny path extensions for executables, e.g. Windows if pathext is None: pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD').split(os.pathsep) # don't use extensions if the command ends with one of them for ext in pathext: if cmd.endswith(ext): pathext = [''] break # check if we find the command on PATH for p in path: f = os.path.join(p, cmd) if os.path.isfile(f): return f for ext in pathext: fext = f + ext if os.path.isfile(fext): return fext return None # checks if it can find xgettext on the PATH and # imports the extraction tests if yes xgettext_cmd = find_command('xgettext') if xgettext_cmd: p = Popen('%s --version' % xgettext_cmd, shell=True, stdout=PIPE, stderr=PIPE, close_fds=os.name != 'nt', universal_newlines=True) output = p.communicate()[0] match = re.search(r'(?P\d+)\.(?P\d+)', output) if match: xversion = (int(match.group('major')), int(match.group('minor'))) if xversion > (0, 15): from extraction import *