78 lines
2.5 KiB
Python
78 lines
2.5 KiB
Python
from __future__ import unicode_literals
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import os
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import sys
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from subprocess import PIPE, Popen
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from django.utils import six
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from django.utils.encoding import DEFAULT_LOCALE_ENCODING, force_text
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from .base import CommandError
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def popen_wrapper(args, os_err_exc_type=CommandError, stdout_encoding='utf-8'):
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"""
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Friendly wrapper around Popen.
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Returns stdout output, stderr output and OS status code.
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"""
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try:
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p = Popen(args, shell=False, stdout=PIPE, stderr=PIPE, close_fds=os.name != 'nt')
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except OSError as e:
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strerror = force_text(e.strerror, DEFAULT_LOCALE_ENCODING, strings_only=True)
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six.reraise(os_err_exc_type, os_err_exc_type('Error executing %s: %s' %
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(args[0], strerror)), sys.exc_info()[2])
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output, errors = p.communicate()
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return (
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force_text(output, stdout_encoding, strings_only=True, errors='strict'),
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force_text(errors, DEFAULT_LOCALE_ENCODING, strings_only=True, errors='replace'),
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p.returncode
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)
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def handle_extensions(extensions):
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"""
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Organizes multiple extensions that are separated with commas or passed by
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using --extension/-e multiple times.
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For example: running 'django-admin makemessages -e js,txt -e xhtml -a'
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would result in an extension list: ['.js', '.txt', '.xhtml']
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>>> handle_extensions(['.html', 'html,js,py,py,py,.py', 'py,.py'])
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{'.html', '.js', '.py'}
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>>> handle_extensions(['.html, txt,.tpl'])
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{'.html', '.tpl', '.txt'}
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"""
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ext_list = []
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for ext in extensions:
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ext_list.extend(ext.replace(' ', '').split(','))
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for i, ext in enumerate(ext_list):
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if not ext.startswith('.'):
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ext_list[i] = '.%s' % ext_list[i]
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return set(ext_list)
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def find_command(cmd, path=None, pathext=None):
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if path is None:
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path = os.environ.get('PATH', '').split(os.pathsep)
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if isinstance(path, six.string_types):
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path = [path]
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# check if there are funny path extensions for executables, e.g. Windows
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if pathext is None:
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pathext = os.environ.get('PATHEXT', '.COM;.EXE;.BAT;.CMD').split(os.pathsep)
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# don't use extensions if the command ends with one of them
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for ext in pathext:
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if cmd.endswith(ext):
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pathext = ['']
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break
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# check if we find the command on PATH
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for p in path:
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f = os.path.join(p, cmd)
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if os.path.isfile(f):
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return f
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for ext in pathext:
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fext = f + ext
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if os.path.isfile(fext):
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return fext
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return None
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