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comparison mercurial/ui.py @ 14515:76f295eaed86

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util: add helper function isatty(fd) to check for tty-ness
author Idan Kamara <idankk86@gmail.com>
date Thu, 02 Jun 2011 00:43:34 +0300
parents a599431b0ab6
children 4e1ccd4c2b6d
comparison
equal deleted inserted replaced
14514:175e4b9d8a96 14515:76f295eaed86
471 471
472 This function refers to input only; for output, see `ui.formatted()'. 472 This function refers to input only; for output, see `ui.formatted()'.
473 ''' 473 '''
474 i = self.configbool("ui", "interactive", None) 474 i = self.configbool("ui", "interactive", None)
475 if i is None: 475 if i is None:
476 try: 476 # some environments replace stdin without implementing isatty
477 return sys.stdin.isatty() 477 # usually those are non-interactive
478 except AttributeError: 478 return util.isatty(sys.stdin)
479 # some environments replace stdin without implementing isatty
480 # usually those are non-interactive
481 return False
482 479
483 return i 480 return i
484 481
485 def termwidth(self): 482 def termwidth(self):
486 '''how wide is the terminal in columns? 483 '''how wide is the terminal in columns?
512 if self.plain(): 509 if self.plain():
513 return False 510 return False
514 511
515 i = self.configbool("ui", "formatted", None) 512 i = self.configbool("ui", "formatted", None)
516 if i is None: 513 if i is None:
517 try: 514 # some environments replace stdout without implementing isatty
518 return sys.stdout.isatty() 515 # usually those are non-interactive
519 except AttributeError: 516 return util.isatty(sys.stdout)
520 # some environments replace stdout without implementing isatty
521 # usually those are non-interactive
522 return False
523 517
524 return i 518 return i
525 519
526 def _readline(self, prompt=''): 520 def _readline(self, prompt=''):
527 if sys.stdin.isatty(): 521 if util.isatty(sys.stdin):
528 try: 522 try:
529 # magically add command line editing support, where 523 # magically add command line editing support, where
530 # available 524 # available
531 import readline 525 import readline
532 # force demandimport to really load the module 526 # force demandimport to really load the module