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# Copyright 2013-2020 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)
from __future__ import print_function
import textwrap
from six.moves import zip_longest
import llnl.util.tty.color as color
from llnl.util.tty.colify import colify
import spack.cmd.common.arguments as arguments
import spack.repo
import spack.spec
import spack.fetch_strategy as fs
description = 'get detailed information on a particular package'
section = 'basic'
level = 'short'
header_color = '@*b'
plain_format = '@.'
def padder(str_list, extra=0):
"""Return a function to pad elements of a list."""
length = max(len(str(s)) for s in str_list) + extra
def pad(string):
string = str(string)
padding = max(0, length - len(string))
return string + (padding * ' ')
return pad
def setup_parser(subparser):
arguments.add_common_arguments(subparser, ['package'])
def section_title(s):
return header_color + s + plain_format
def version(s):
return spack.spec.version_color + s + plain_format
def variant(s):
return spack.spec.enabled_variant_color + s + plain_format
class VariantFormatter(object):
def __init__(self, variants, max_widths=(30, 20, 30)):
self.variants = variants
self.headers = ('Name [Default]', 'Allowed values', 'Description')
# Set max headers lengths
self.max_column_widths = max_widths
# Formats
fmt_name = '{0} [{1}]'
# Initialize column widths with the length of the
# corresponding headers, as they cannot be shorter
# than that
self.column_widths = [len(x) for x in self.headers]
# Update according to line lengths
for k, v in variants.items():
candidate_max_widths = (
len(fmt_name.format(k, self.default(v))), # Name [Default]
len(v.allowed_values), # Allowed values
len(v.description) # Description
)
self.column_widths = (
max(self.column_widths[0], candidate_max_widths[0]),
max(self.column_widths[1], candidate_max_widths[1]),
max(self.column_widths[2], candidate_max_widths[2])
)
# Reduce to at most the maximum allowed
self.column_widths = (
min(self.column_widths[0], self.max_column_widths[0]),
min(self.column_widths[1], self.max_column_widths[1]),
min(self.column_widths[2], self.max_column_widths[2])
)
# Compute the format
self.fmt = "%%-%ss%%-%ss%%s" % (
self.column_widths[0] + 4,
self.column_widths[1] + 4
)
def default(self, v):
s = 'on' if v.default is True else 'off'
if not isinstance(v.default, bool):
s = v.default
return s
@property
def lines(self):
if not self.variants:
yield ' None'
else:
yield ' ' + self.fmt % self.headers
underline = tuple([l * "=" for l in self.column_widths])
yield ' ' + self.fmt % underline
yield ''
for k, v in sorted(self.variants.items()):
name = textwrap.wrap(
'{0} [{1}]'.format(k, self.default(v)),
width=self.column_widths[0]
)
allowed = v.allowed_values.replace('True, False', 'on, off')
allowed = textwrap.wrap(allowed, width=self.column_widths[1])
description = textwrap.wrap(
v.description,
width=self.column_widths[2]
)
for t in zip_longest(
name, allowed, description, fillvalue=''
):
yield " " + self.fmt % t
def print_text_info(pkg):
"""Print out a plain text description of a package."""
header = section_title(
'{0}: '
).format(pkg.build_system_class) + pkg.name
color.cprint(header)
color.cprint('')
color.cprint(section_title('Description:'))
if pkg.__doc__:
color.cprint(color.cescape(pkg.format_doc(indent=4)))
else:
color.cprint(" None")
color.cprint(section_title('Homepage: ') + pkg.homepage)
if len(pkg.maintainers) > 0:
mnt = " ".join(['@@' + m for m in pkg.maintainers])
color.cprint('')
color.cprint(section_title('Maintainers: ') + mnt)
color.cprint('')
color.cprint(section_title("Tags: "))
if hasattr(pkg, 'tags'):
tags = sorted(pkg.tags)
colify(tags, indent=4)
else:
color.cprint(" None")
color.cprint('')
color.cprint(section_title('Preferred version: '))
if not pkg.versions:
color.cprint(version(' None'))
color.cprint('')
color.cprint(section_title('Safe versions: '))
color.cprint(version(' None'))
else:
pad = padder(pkg.versions, 4)
# Here we sort first on the fact that a version is marked
# as preferred in the package, then on the fact that the
# version is not develop, then lexicographically
key_fn = lambda v: (pkg.versions[v].get('preferred', False),
not v.isdevelop(),
v)
preferred = sorted(pkg.versions, key=key_fn).pop()
url = ''
if pkg.has_code:
url = fs.for_package_version(pkg, preferred)
line = version(' {0}'.format(pad(preferred))) + color.cescape(url)
color.cprint(line)
color.cprint('')
color.cprint(section_title('Safe versions: '))
for v in reversed(sorted(pkg.versions)):
if pkg.has_code:
url = fs.for_package_version(pkg, v)
line = version(' {0}'.format(pad(v))) + color.cescape(url)
color.cprint(line)
color.cprint('')
color.cprint(section_title('Variants:'))
formatter = VariantFormatter(pkg.variants)
for line in formatter.lines:
color.cprint(line)
if hasattr(pkg, 'phases') and pkg.phases:
color.cprint('')
color.cprint(section_title('Installation Phases:'))
phase_str = ''
for phase in pkg.phases:
phase_str += " {0}".format(phase)
color.cprint(phase_str)
for deptype in ('build', 'link', 'run'):
color.cprint('')
color.cprint(section_title('%s Dependencies:' % deptype.capitalize()))
deps = sorted(pkg.dependencies_of_type(deptype))
if deps:
colify(deps, indent=4)
else:
color.cprint(' None')
color.cprint('')
color.cprint(section_title('Virtual Packages: '))
if pkg.provided:
inverse_map = {}
for spec, whens in pkg.provided.items():
for when in whens:
if when not in inverse_map:
inverse_map[when] = set()
inverse_map[when].add(spec)
for when, specs in reversed(sorted(inverse_map.items())):
line = " %s provides %s" % (
when.colorized(), ', '.join(s.colorized() for s in specs)
)
print(line)
else:
color.cprint(" None")
color.cprint('')
def info(parser, args):
pkg = spack.repo.get(args.package)
print_text_info(pkg)
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