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##############################################################################
# Copyright (c) 2013, Lawrence Livermore National Security, LLC.
# Produced at the Lawrence Livermore National Laboratory.
#
# This file is part of Spack.
# Written by Todd Gamblin, tgamblin@llnl.gov, All rights reserved.
# LLNL-CODE-647188
#
# For details, see https://scalability-llnl.github.io/spack
# Please also see the LICENSE file for our notice and the LGPL.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License (as published by
# the Free Software Foundation) version 2.1 dated February 1999.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the terms and
# conditions of the GNU General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
##############################################################################
import sys
import os
import textwrap
import fcntl
import termios
import struct
from StringIO import StringIO
from llnl.util.tty.color import *
_debug = False
_verbose = False
indent = " "
def is_verbose():
return _verbose
def is_debug():
return _debug
def set_debug(flag):
global _debug
_debug = flag
def set_verbose(flag):
global _verbose
_verbose = flag
def msg(message, *args):
cprint("@*b{==>} %s" % cescape(message))
for arg in args:
print indent + str(arg)
def info(message, *args, **kwargs):
format = kwargs.get('format', '*b')
stream = kwargs.get('stream', sys.stdout)
cprint("@%s{==>} %s" % (format, cescape(str(message))), stream=stream)
for arg in args:
lines = textwrap.wrap(
str(arg), initial_indent=indent, subsequent_indent=indent)
for line in lines:
stream.write(line + '\n')
def verbose(message, *args):
if _verbose:
info(message, *args, format='c')
def debug(message, *args):
if _debug:
info(message, *args, format='g', stream=sys.stderr)
def error(message, *args):
info("Error: " + str(message), *args, format='*r', stream=sys.stderr)
def warn(message, *args):
info("Warning: " + str(message), *args, format='*Y', stream=sys.stderr)
def die(message, *args):
error(message, *args)
sys.exit(1)
def get_number(prompt, **kwargs):
default = kwargs.get('default', None)
abort = kwargs.get('abort', None)
if default is not None and abort is not None:
prompt += ' (default is %s, %s to abort) ' % (default, abort)
elif default is not None:
prompt += ' (default is %s) ' % default
elif abort is not None:
prompt += ' (%s to abort) ' % abort
number = None
while number is None:
ans = raw_input(prompt)
if ans == str(abort):
return None
if ans:
try:
number = int(ans)
if number < 1:
msg("Please enter a valid number.")
number = None
except ValueError:
msg("Please enter a valid number.")
elif default is not None:
number = default
return number
def get_yes_or_no(prompt, **kwargs):
default_value = kwargs.get('default', None)
if default_value is None:
prompt += ' [y/n] '
elif default_value is True:
prompt += ' [Y/n] '
elif default_value is False:
prompt += ' [y/N] '
else:
raise ValueError("default for get_yes_no() must be True, False, or None.")
result = None
while result is None:
ans = raw_input(prompt).lower()
if not ans:
result = default_value
if result is None:
print "Please enter yes or no."
else:
if ans == 'y' or ans == 'yes':
result = True
elif ans == 'n' or ans == 'no':
result = False
return result
def hline(label=None, **kwargs):
"""Draw a labeled horizontal line.
Options:
char Char to draw the line with. Default '-'
max_width Maximum width of the line. Default is 64 chars.
"""
char = kwargs.pop('char', '-')
max_width = kwargs.pop('max_width', 64)
if kwargs:
raise TypeError("'%s' is an invalid keyword argument for this function."
% next(kwargs.iterkeys()))
rows, cols = terminal_size()
if not cols:
cols = max_width
else:
cols -= 2
cols = min(max_width, cols)
label = str(label)
prefix = char * 2 + " "
suffix = " " + (cols - len(prefix) - clen(label)) * char
out = StringIO()
out.write(prefix)
out.write(label)
out.write(suffix)
print out.getvalue()
def terminal_size():
"""Gets the dimensions of the console: (rows, cols)."""
def ioctl_GWINSZ(fd):
try:
rc = struct.unpack('hh', fcntl.ioctl(fd, termios.TIOCGWINSZ, '1234'))
except:
return
return rc
rc = ioctl_GWINSZ(0) or ioctl_GWINSZ(1) or ioctl_GWINSZ(2)
if not rc:
try:
fd = os.open(os.ctermid(), os.O_RDONLY)
rc = ioctl_GWINSZ(fd)
os.close(fd)
except:
pass
if not rc:
rc = (os.environ.get('LINES', 25), os.environ.get('COLUMNS', 80))
return int(rc[0]), int(rc[1])
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