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import os
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
if find_command('xgettext'):
from extraction import *
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