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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 os
import re
import sys
import llnl.util.tty as tty
from llnl.util.lang import attr_setdefault
import spack
import spack.spec
# cmd has a submodule called "list" so preserve the python list module
python_list = list
# Patterns to ignore in the commands directory when looking for commands.
ignore_files = r'^\.|^__init__.py$|^#'
SETUP_PARSER = "setup_parser"
DESCRIPTION = "description"
command_path = os.path.join(spack.lib_path, "spack", "cmd")
commands = []
for file in os.listdir(command_path):
if file.endswith(".py") and not re.search(ignore_files, file):
cmd = re.sub(r'.py$', '', file)
commands.append(cmd)
commands.sort()
def get_cmd_function_name(name):
return name.replace("-", "_")
def get_module(name):
"""Imports the module for a particular command name and returns it."""
module_name = "%s.%s" % (__name__, name)
module = __import__(
module_name, fromlist=[name, SETUP_PARSER, DESCRIPTION],
level=0)
attr_setdefault(module, SETUP_PARSER, lambda *args: None) # null-op
attr_setdefault(module, DESCRIPTION, "")
fn_name = get_cmd_function_name(name)
if not hasattr(module, fn_name):
tty.die("Command module %s (%s) must define function '%s'."
% (module.__name__, module.__file__, fn_name))
return module
def get_command(name):
"""Imports the command's function from a module and returns it."""
return getattr(get_module(name), get_cmd_function_name(name))
def parse_specs(args, **kwargs):
"""Convenience function for parsing arguments from specs. Handles common
exceptions and dies if there are errors.
"""
concretize = kwargs.get('concretize', False)
normalize = kwargs.get('normalize', False)
if isinstance(args, (python_list, tuple)):
args = " ".join(args)
try:
specs = spack.spec.parse(args)
for spec in specs:
if concretize:
spec.concretize() # implies normalize
elif normalize:
spec.normalize()
return specs
except spack.parse.ParseError, e:
tty.error(e.message, e.string, e.pos * " " + "^")
sys.exit(1)
except spack.spec.SpecError, e:
tty.error(e.message)
sys.exit(1)
def elide_list(line_list, max_num=10):
"""Takes a long list and limits it to a smaller number of elements,
replacing intervening elements with '...'. For example::
elide_list([1,2,3,4,5,6], 4)
gives::
[1, 2, 3, '...', 6]
"""
if len(line_list) > max_num:
return line_list[:max_num-1] + ['...'] + line_list[-1:]
else:
return line_list
def disambiguate_spec(spec):
matching_specs = spack.installed_db.query(spec)
if not matching_specs:
tty.die("Spec '%s' matches no installed packages." % spec)
elif len(matching_specs) > 1:
args = ["%s matches multiple packages." % spec,
"Matching packages:"]
args += [" " + str(s) for s in matching_specs]
args += ["Use a more specific spec."]
tty.die(*args)
return matching_specs[0]
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