cola/interaction.py

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