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from __future__ import print_function
import os
import sys
import getpass
import subprocess
from pandora.py2compat import input
try:
import termios
except ImportError:
# Windows does not have a termios module
termios = None
class Colors(object):
def __wrap_with(raw_code):
@staticmethod
def inner(text, bold=False):
code = raw_code
if bold:
code = u"1;{}".format(code)
return u"\033[{}m{}\033[0m".format(code, text)
return inner
red = __wrap_with("31")
green = __wrap_with("32")
yellow = __wrap_with("33")
blue = __wrap_with("34")
magenta = __wrap_with("35")
cyan = __wrap_with("36")
white = __wrap_with("37")
class Screen(object):
@staticmethod
def set_echo(enabled):
if not termios:
return
handle = sys.stdin.fileno()
if not os.isatty(handle):
return
attrs = termios.tcgetattr(handle)
if enabled:
attrs[3] |= termios.ECHO
else:
attrs[3] &= ~termios.ECHO
termios.tcsetattr(handle, termios.TCSANOW, attrs)
@staticmethod
def clear():
sys.stdout.write("\x1b[2J\x1b[H")
sys.stdout.flush()
@staticmethod
def print_error(msg):
print(Colors.red(msg))
@staticmethod
def print_success(msg):
print(Colors.green(msg))
@staticmethod
def get_string(prompt):
while True:
value = input(prompt).strip()
if not value:
print(Colors.red("Value Required!"))
else:
return value
@staticmethod
def get_password(prompt="Password: "):
while True:
value = getpass.getpass(prompt)
if not value:
print(Colors.red("Value Required!"))
else:
return value
@staticmethod
def get_integer(prompt):
"""Gather user input and convert it to an integer
Will keep trying till the user enters an interger or until they ^C the
program.
"""
while True:
try:
return int(input(prompt).strip())
except ValueError:
print(Colors.red("Invalid Input!"))
def clear_screen():
"""Clear the terminal
"""
sys.stdout.write("\x1b[2J\x1b[H")
sys.stdout.flush()
def iterate_forever(func, *args, **kwargs):
"""Iterate over a finite iterator forever
When the iterator is exhausted will call the function again to generate a
new iterator and keep iterating.
"""
output = func(*args, **kwargs)
while True:
try:
playlist_item = next(output)
playlist_item.prepare_playback()
yield playlist_item
except StopIteration:
output = func(*args, **kwargs)
class SilentPopen(subprocess.Popen):
"""A Popen varient that dumps it's output and error
"""
def __init__(self, *args, **kwargs):
self._dev_null = open(os.devnull, "w")
kwargs["stdin"] = subprocess.PIPE
kwargs["stdout"] = subprocess.PIPE
kwargs["stderr"] = self._dev_null
super(SilentPopen, self).__init__(*args, **kwargs)
def __del__(self):
self._dev_null.close()
super(SilentPopen, self).__del__()
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