cola/interaction.py

   1 from __future__ import division, absolute_import, unicode_literals
   2
   3 import os
   4 from cola import core
   5 from cola.i18n import N_
   6
   7
   8 class Interaction(object):
   9     """Prompts the user and answers questions"""
  10
  11     VERBOSE = bool(os.getenv('GIT_COLA_VERBOSE'))
  12
  13     @staticmethod
  14     def information(title,
  15                     message=None, details=None, informative_text=None):
  16         if message is None:
  17             message = title
  18         scope = {}
  19         scope['title'] = title
  20         scope['title_dashes'] = '-' * len(title)
  21         scope['message'] = message
  22         scope['details'] = details and '\n'+details or ''
  23         scope['informative_text'] = (informative_text and
  24                 '\n'+informative_text or '')
  25         print("""
  26 %(title)s
  27 %(title_dashes)s
  28 %(message)s%(details)s%(informative_text)s""" % scope)
  29
  30     @classmethod
  31     def critical(cls, title, message=None, details=None):
  32         """Show a warning with the provided title and message."""
  33         cls.information(title, message=message, details=details)
  34
  35     @classmethod
  36     def confirm(cls, title, text, informative_text, ok_text,
  37                 icon=None, default=True):
  38
  39         cls.information(title, message=text,
  40                         informative_text=informative_text)
  41         if default:
  42             prompt = '%s? [Y/n]:' % ok_text
  43         else:
  44             prompt = '%s? [y/N]: ' % ok_text
  45         answer = raw_input(prompt)
  46         if answer == '':
  47             return default
  48         return answer.lower().startswith('y')
  49
  50     @classmethod
  51     def question(cls, title, message, default=True):
  52         return cls.confirm(title, message, '',
  53                            ok_text=N_('Continue'), default=default)
  54
  55     @classmethod
  56     def run_command(cls, title, cmd):
  57         cls.log('$ ' + core.list2cmdline(cmd))
  58         status, out, err = core.run_command(cmd)
  59         cls.log_status(status, out, err)
  60         return status, out, err
  61
  62     @classmethod
  63     def confirm_config_action(cls, name, opts):
  64         return cls.confirm(N_('Run %s?') % name,
  65                            N_('Run the "%s" command?') % name,
  66                            '',
  67                            ok_text=N_('Run'))
  68
  69     @classmethod
  70     def log_status(cls, status, out, err=None):
  71         msg = (
  72            (out and ((N_('Output: %s') % out) + '\n') or '') +
  73            (err and ((N_('Errors: %s') % err) + '\n') or '') +
  74            N_('Exit code: %s') % status
  75         )
  76         cls.log(msg)
  77
  78     @classmethod
  79     def log(cls, message):
  80         if cls.VERBOSE:
  81             core.stdout(message)
  82
  83     safe_log = log