# Copyright 2013-2024 Lawrence Livermore National Security, LLC and other
# Spack Project Developers. See the top-level COPYRIGHT file for details.
#
# SPDX-License-Identifier: (Apache-2.0 OR MIT)
import argparse
import os
import re
import sys
from typing import List, Union
import llnl.string
import llnl.util.tty as tty
from llnl.util.filesystem import join_path
from llnl.util.lang import attr_setdefault, index_by
from llnl.util.tty.colify import colify
from llnl.util.tty.color import colorize
import spack.config
import spack.environment as ev
import spack.error
import spack.extensions
import spack.parser
import spack.paths
import spack.spec
import spack.store
import spack.traverse as traverse
import spack.user_environment as uenv
import spack.util.spack_json as sjson
import spack.util.spack_yaml as syaml
# 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$|^#"
SETUP_PARSER = "setup_parser"
DESCRIPTION = "description"
[docs]
def python_name(cmd_name):
"""Convert ``-`` to ``_`` in command name, to make a valid identifier."""
return cmd_name.replace("-", "_")
[docs]
def require_python_name(pname):
"""Require that the provided name is a valid python name (per
python_name()). Useful for checking parameters for function
prerequisites."""
if python_name(pname) != pname:
raise PythonNameError(pname)
[docs]
def cmd_name(python_name):
"""Convert module name (with ``_``) to command name (with ``-``)."""
return python_name.replace("_", "-")
[docs]
def require_cmd_name(cname):
"""Require that the provided name is a valid command name (per
cmd_name()). Useful for checking parameters for function
prerequisites.
"""
if cmd_name(cname) != cname:
raise CommandNameError(cname)
#: global, cached list of all commands -- access through all_commands()
_all_commands = None
[docs]
def all_commands():
"""Get a sorted list of all spack commands.
This will list the lib/spack/spack/cmd directory and find the
commands there to construct the list. It does not actually import
the python files -- just gets the names.
"""
global _all_commands
if _all_commands is None:
_all_commands = []
command_paths = [spack.paths.command_path] # Built-in commands
command_paths += spack.extensions.get_command_paths() # Extensions
for path in command_paths:
for file in os.listdir(path):
if file.endswith(".py") and not re.search(ignore_files, file):
cmd = re.sub(r".py$", "", file)
_all_commands.append(cmd_name(cmd))
_all_commands.sort()
return _all_commands
[docs]
def remove_options(parser, *options):
"""Remove some options from a parser."""
for option in options:
for action in parser._actions:
if vars(action)["option_strings"][0] == option:
parser._handle_conflict_resolve(None, [(option, action)])
break
[docs]
def get_module(cmd_name):
"""Imports the module for a particular command name and returns it.
Args:
cmd_name (str): name of the command for which to get a module
(contains ``-``, not ``_``).
"""
require_cmd_name(cmd_name)
pname = python_name(cmd_name)
try:
# Try to import the command from the built-in directory
module_name = "%s.%s" % (__name__, pname)
module = __import__(module_name, fromlist=[pname, SETUP_PARSER, DESCRIPTION], level=0)
tty.debug("Imported {0} from built-in commands".format(pname))
except ImportError:
module = spack.extensions.get_module(cmd_name)
attr_setdefault(module, SETUP_PARSER, lambda *args: None) # null-op
attr_setdefault(module, DESCRIPTION, "")
if not hasattr(module, pname):
tty.die(
"Command module %s (%s) must define function '%s'."
% (module.__name__, module.__file__, pname)
)
return module
[docs]
def get_command(cmd_name):
"""Imports the command function associated with cmd_name.
The function's name is derived from cmd_name using python_name().
Args:
cmd_name (str): name of the command (contains ``-``, not ``_``).
"""
require_cmd_name(cmd_name)
pname = python_name(cmd_name)
return getattr(get_module(cmd_name), pname)
[docs]
def quote_kvp(string: str) -> str:
"""For strings like ``name=value`` or ``name==value``, quote and escape the value if needed.
This is a compromise to respect quoting of key-value pairs on the CLI. The shell
strips quotes from quoted arguments, so we cannot know *exactly* how CLI arguments
were quoted. To compensate, we re-add quotes around anything staritng with ``name=``
or ``name==``, and we assume the rest of the argument is the value. This covers the
common cases of passign flags, e.g., ``cflags="-O2 -g"`` on the command line.
"""
match = spack.parser.SPLIT_KVP.match(string)
if not match:
return string
key, delim, value = match.groups()
return f"{key}{delim}{spack.parser.quote_if_needed(value)}"
[docs]
def parse_specs(
args: Union[str, List[str]], concretize: bool = False, tests: bool = False
) -> List[spack.spec.Spec]:
"""Convenience function for parsing arguments from specs. Handles common
exceptions and dies if there are errors.
"""
args = [args] if isinstance(args, str) else args
arg_string = " ".join([quote_kvp(arg) for arg in args])
specs = spack.parser.parse(arg_string)
for spec in specs:
if concretize:
spec.concretize(tests=tests)
return specs
[docs]
def matching_spec_from_env(spec):
"""
Returns a concrete spec, matching what is available in the environment.
If no matching spec is found in the environment (or if no environment is
active), this will return the given spec but concretized.
"""
env = ev.active_environment()
if env:
return env.matching_spec(spec) or spec.concretized()
else:
return spec.concretized()
[docs]
def disambiguate_spec(spec, env, local=False, installed=True, first=False):
"""Given a spec, figure out which installed package it refers to.
Arguments:
spec (spack.spec.Spec): a spec to disambiguate
env (spack.environment.Environment): a spack environment,
if one is active, or None if no environment is active
local (bool): do not search chained spack instances
installed (bool or spack.database.InstallStatus or typing.Iterable):
install status argument passed to database query.
See ``spack.database.Database._query`` for details.
"""
hashes = env.all_hashes() if env else None
return disambiguate_spec_from_hashes(spec, hashes, local, installed, first)
[docs]
def disambiguate_spec_from_hashes(spec, hashes, local=False, installed=True, first=False):
"""Given a spec and a list of hashes, get concrete spec the spec refers to.
Arguments:
spec (spack.spec.Spec): a spec to disambiguate
hashes (typing.Iterable): a set of hashes of specs among which to disambiguate
local (bool): do not search chained spack instances
installed (bool or spack.database.InstallStatus or typing.Iterable):
install status argument passed to database query.
See ``spack.database.Database._query`` for details.
"""
if local:
matching_specs = spack.store.STORE.db.query_local(spec, hashes=hashes, installed=installed)
else:
matching_specs = spack.store.STORE.db.query(spec, hashes=hashes, installed=installed)
if not matching_specs:
tty.die("Spec '%s' matches no installed packages." % spec)
elif first:
return matching_specs[0]
ensure_single_spec_or_die(spec, matching_specs)
return matching_specs[0]
[docs]
def ensure_single_spec_or_die(spec, matching_specs):
if len(matching_specs) <= 1:
return
format_string = "{name}{@version}{%compiler.name}{@compiler.version}{arch=architecture}"
args = ["%s matches multiple packages." % spec, "Matching packages:"]
args += [
colorize(" @K{%s} " % s.dag_hash(7)) + s.cformat(format_string) for s in matching_specs
]
args += ["Use a more specific spec (e.g., prepend '/' to the hash)."]
tty.die(*args)
[docs]
def gray_hash(spec, length):
if not length:
# default to maximum hash length
length = 32
h = spec.dag_hash(length) if spec.concrete else "-" * length
return colorize("@K{%s}" % h)
[docs]
def display_specs_as_json(specs, deps=False):
"""Convert specs to a list of json records."""
seen = set()
records = []
for spec in specs:
dag_hash = spec.dag_hash()
if dag_hash in seen:
continue
records.append(spec.node_dict_with_hashes())
seen.add(dag_hash)
if deps:
for dep in spec.traverse():
dep_dag_hash = dep.dag_hash()
if dep_dag_hash in seen:
continue
records.append(dep.node_dict_with_hashes())
seen.add(dep_dag_hash)
sjson.dump(records, sys.stdout)
[docs]
def iter_groups(specs, indent, all_headers):
"""Break a list of specs into groups indexed by arch/compiler."""
# Make a dict with specs keyed by architecture and compiler.
index = index_by(specs, ("architecture", "compiler"))
ispace = indent * " "
# Traverse the index and print out each package
for i, (architecture, compiler) in enumerate(sorted(index)):
if i > 0:
print()
header = "%s{%s} / %s{%s}" % (
spack.spec.ARCHITECTURE_COLOR,
architecture if architecture else "no arch",
spack.spec.COMPILER_COLOR,
f"{compiler.display_str}" if compiler else "no compiler",
)
# Sometimes we want to display specs that are not yet concretized.
# If they don't have a compiler / architecture attached to them,
# then skip the header
if all_headers or (architecture is not None or compiler is not None):
sys.stdout.write(ispace)
tty.hline(colorize(header), char="-")
specs = index[(architecture, compiler)]
specs.sort()
yield specs
[docs]
def display_specs(specs, args=None, **kwargs):
"""Display human readable specs with customizable formatting.
Prints the supplied specs to the screen, formatted according to the
arguments provided.
Specs are grouped by architecture and compiler, and columnized if
possible.
Options can add more information to the default display. Options can
be provided either as keyword arguments or as an argparse namespace.
Keyword arguments take precedence over settings in the argparse
namespace.
Args:
specs (list): the specs to display
args (argparse.Namespace or None): namespace containing formatting arguments
Keyword Args:
paths (bool): Show paths with each displayed spec
deps (bool): Display dependencies with specs
long (bool): Display short hashes with specs
very_long (bool): Display full hashes with specs (supersedes ``long``)
namespaces (bool): Print namespaces along with names
show_flags (bool): Show compiler flags with specs
variants (bool): Show variants with specs
indent (int): indent each line this much
groups (bool): display specs grouped by arch/compiler (default True)
decorator (typing.Callable): function to call to decorate specs
all_headers (bool): show headers even when arch/compiler aren't defined
output (typing.IO): A file object to write to. Default is ``sys.stdout``
"""
def get_arg(name, default=None):
"""Prefer kwargs, then args, then default."""
if name in kwargs:
return kwargs.get(name)
elif args is not None:
return getattr(args, name, default)
else:
return default
paths = get_arg("paths", False)
deps = get_arg("deps", False)
hashes = get_arg("long", False)
namespaces = get_arg("namespaces", False)
flags = get_arg("show_flags", False)
full_compiler = get_arg("show_full_compiler", False)
variants = get_arg("variants", False)
groups = get_arg("groups", True)
all_headers = get_arg("all_headers", False)
output = get_arg("output", sys.stdout)
decorator = get_arg("decorator", None)
if decorator is None:
decorator = lambda s, f: f
indent = get_arg("indent", 0)
hlen = 7
if get_arg("very_long", False):
hashes = True
hlen = None
format_string = get_arg("format", None)
if format_string is None:
nfmt = "{fullname}" if namespaces else "{name}"
ffmt = ""
if full_compiler or flags:
ffmt += "{%compiler.name}"
if full_compiler:
ffmt += "{@compiler.version}"
ffmt += " {compiler_flags}"
vfmt = "{variants}" if variants else ""
format_string = nfmt + "{@version}" + ffmt + vfmt
def fmt(s, depth=0):
"""Formatter function for all output specs"""
string = ""
if hashes:
string += gray_hash(s, hlen) + " "
string += depth * " "
string += decorator(s, s.cformat(format_string))
return string
def format_list(specs):
"""Display a single list of specs, with no groups"""
# create the final, formatted versions of all specs
formatted = []
for spec in specs:
if deps:
for depth, dep in traverse.traverse_tree([spec], depth_first=False):
formatted.append((fmt(dep.spec, depth), dep.spec))
formatted.append(("", None)) # mark newlines
else:
formatted.append((fmt(spec), spec))
# unless any of these are set, we can just colify and be done.
if not any((deps, paths)):
colify((f[0] for f in formatted), indent=indent, output=output)
return ""
# otherwise, we'll print specs one by one
max_width = max(len(f[0]) for f in formatted)
path_fmt = "%%-%ds%%s" % (max_width + 2)
out = ""
# getting lots of prefixes requires DB lookups. Ensure
# all spec.prefix calls are in one transaction.
with spack.store.STORE.db.read_transaction():
for string, spec in formatted:
if not string:
# print newline from above
out += "\n"
continue
if paths:
out += path_fmt % (string, spec.prefix) + "\n"
else:
out += string + "\n"
return out
out = ""
if groups:
for specs in iter_groups(specs, indent, all_headers):
output.write(format_list(specs))
else:
out = format_list(sorted(specs))
output.write(out)
output.flush()
[docs]
def filter_loaded_specs(specs):
"""Filter a list of specs returning only those that are
currently loaded."""
hashes = os.environ.get(uenv.spack_loaded_hashes_var, "").split(":")
return [x for x in specs if x.dag_hash() in hashes]
[docs]
def print_how_many_pkgs(specs, pkg_type="", suffix=""):
"""Given a list of specs, this will print a message about how many
specs are in that list.
Args:
specs (list): depending on how many items are in this list, choose
the plural or singular form of the word "package"
pkg_type (str): the output string will mention this provided
category, e.g. if pkg_type is "installed" then the message
would be "3 installed packages"
"""
tty.msg("%s" % llnl.string.plural(len(specs), pkg_type + " package") + suffix)
[docs]
def spack_is_git_repo():
"""Ensure that this instance of Spack is a git clone."""
return is_git_repo(spack.paths.prefix)
[docs]
def is_git_repo(path):
dotgit_path = join_path(path, ".git")
if os.path.isdir(dotgit_path):
# we are in a regular git repo
return True
if os.path.isfile(dotgit_path):
# we might be in a git worktree
try:
with open(dotgit_path, "rb") as f:
dotgit_content = syaml.load(f)
return os.path.isdir(dotgit_content.get("gitdir", dotgit_path))
except syaml.SpackYAMLError:
pass
return False
[docs]
class PythonNameError(spack.error.SpackError):
"""Exception class thrown for impermissible python names"""
def __init__(self, name):
self.name = name
super().__init__("{0} is not a permissible Python name.".format(name))
[docs]
class CommandNameError(spack.error.SpackError):
"""Exception class thrown for impermissible command names"""
def __init__(self, name):
self.name = name
super().__init__("{0} is not a permissible Spack command name.".format(name))
########################################
# argparse types for argument validation
########################################
[docs]
def extant_file(f):
"""
Argparse type for files that exist.
"""
if not os.path.isfile(f):
raise argparse.ArgumentTypeError("%s does not exist" % f)
return f
[docs]
def require_active_env(cmd_name):
"""Used by commands to get the active environment
If an environment is not found, print an error message that says the calling
command *needs* an active environment.
Arguments:
cmd_name (str): name of calling command
Returns:
(spack.environment.Environment): the active environment
"""
env = ev.active_environment()
if env:
return env
tty.die(
"`spack %s` requires an environment" % cmd_name,
"activate an environment first:",
" spack env activate ENV",
"or use:",
" spack -e ENV %s ..." % cmd_name,
)
[docs]
def find_environment(args):
"""Find active environment from args or environment variable.
Check for an environment in this order:
1. via ``spack -e ENV`` or ``spack -D DIR`` (arguments)
2. via a path in the spack.environment.spack_env_var environment variable.
If an environment is found, read it in. If not, return None.
Arguments:
args (argparse.Namespace): argparse namespace with command arguments
Returns:
(spack.environment.Environment): a found environment, or ``None``
"""
# treat env as a name
env = args.env
if env:
if ev.exists(env):
return ev.read(env)
else:
# if env was specified, see if it is a directory otherwise, look
# at env_dir (env and env_dir are mutually exclusive)
env = args.env_dir
# if no argument, look for the environment variable
if not env:
env = os.environ.get(ev.spack_env_var)
# nothing was set; there's no active environment
if not env:
return None
# if we get here, env isn't the name of a spack environment; it has
# to be a path to an environment, or there is something wrong.
if ev.is_env_dir(env):
return ev.Environment(env)
raise ev.SpackEnvironmentError("no environment in %s" % env)
[docs]
def first_line(docstring):
"""Return the first line of the docstring."""
return docstring.split("\n")[0]