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# Copyright 2015 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Rules for manipulation of various packaging."""
# Filetype to restrict inputs
tar_filetype = FileType([".tar", ".tar.gz", ".tgz", ".tar.xz", ".tar.bz2"])
deb_filetype = FileType([".deb", ".udeb"])
def _short_path_dirname(path):
"""Returns the directory's name of the short path of an artifact."""
sp = path.short_path
return sp[:sp.rfind("/")]
def _dest_path(f, strip_prefix):
"""Returns the short path of f, stripped of strip_prefix."""
if strip_prefix == None:
# If no strip_prefix was specified, use the package of the
# given input as the strip_prefix.
strip_prefix = _short_path_dirname(f)
if not strip_prefix:
return f.short_path
if f.short_path.startswith(strip_prefix):
return f.short_path[len(strip_prefix):]
return f.short_path
def _compute_data_path(out, data_path):
"""Compute the relative data path prefix from the data_path attribute."""
if data_path:
# Strip ./ from the beginning if specified.
# There is no way to handle .// correctly (no function that would make
# that possible and Skylark is not turing complete) so just consider it
# as an absolute path.
if len(data_path) >= 2 and data_path[0:2] == "./":
data_path = data_path[2:]
if not data_path or data_path == ".": # Relative to current package
return _short_path_dirname(out)
elif data_path[0] == "/": # Absolute path
return data_path[1:]
else: # Relative to a sub-directory
return _short_path_dirname(out) + "/" + data_path
else:
return None
def _pkg_tar_impl(ctx):
"""Implementation of the pkg_tar rule."""
# Compute the relative path
data_path = _compute_data_path(ctx.outputs.out, ctx.attr.strip_prefix)
build_tar = ctx.executable._build_tar
args = [
"--output=" + ctx.outputs.out.path,
"--directory=" + ctx.attr.package_dir,
"--mode=" + ctx.attr.mode,
]
args += ["--file=%s=%s" % (f.path, _dest_path(f, data_path))
for f in ctx.files.files]
if ctx.attr.modes:
args += ["--modes=%s=%s" % (key, ctx.attr.modes[key]) for key in ctx.attr.modes]
if ctx.attr.extension:
dotPos = ctx.attr.extension.find('.')
if dotPos > 0:
dotPos += 1
args += ["--compression=%s" % ctx.attr.extension[dotPos:]]
args += ["--tar=" + f.path for f in ctx.files.deps]
args += ["--link=%s:%s" % (k, ctx.attr.symlinks[k])
for k in ctx.attr.symlinks]
ctx.action(
executable = build_tar,
arguments = args,
inputs = ctx.files.files + ctx.files.deps,
outputs = [ctx.outputs.out],
mnemonic="PackageTar"
)
def _pkg_deb_impl(ctx):
"""The implementation for the pkg_deb rule."""
files = [ctx.file.data]
args = [
"--output=" + ctx.outputs.deb.path,
"--data=" + ctx.file.data.path,
"--package=" + ctx.attr.package,
"--architecture=" + ctx.attr.architecture,
"--maintainer=" + ctx.attr.maintainer,
]
if ctx.attr.preinst:
args += ["--preinst=@" + ctx.file.preinst.path]
files += [ctx.file.preinst]
if ctx.attr.postinst:
args += ["--postinst=@" + ctx.file.postinst.path]
files += [ctx.file.postinst]
if ctx.attr.prerm:
args += ["--prerm=@" + ctx.file.prerm.path]
files += [ctx.file.prerm]
if ctx.attr.postrm:
args += ["--postrm=@" + ctx.file.postrm.path]
files += [ctx.file.postrm]
# Version and description can be specified by a file or inlined
if ctx.attr.version_file:
if ctx.attr.version:
fail("Both version and version_file attributes were specified")
args += ["--version=@" + ctx.file.version_file.path]
files += [ctx.file.version_file]
elif ctx.attr.version:
args += ["--version=" + ctx.attr.version]
else:
fail("Neither version_file nor version attribute was specified")
if ctx.attr.description_file:
if ctx.attr.description:
fail("Both description and description_file attributes were specified")
args += ["--description=@" + ctx.file.description_file.path]
files += [ctx.file.description_file]
elif ctx.attr.description:
args += ["--description=" + ctx.attr.description]
else:
fail("Neither description_file nor description attribute was specified")
# Built using can also be specified by a file or inlined (but is not mandatory)
if ctx.attr.built_using_file:
if ctx.attr.built_using:
fail("Both build_using and built_using_file attributes were specified")
args += ["--built_using=@" + ctx.file.built_using_file.path]
files += [ctx.file.built_using_file]
elif ctx.attr.built_using:
args += ["--built_using=" + ctx.attr.built_using]
if ctx.attr.priority:
args += ["--priority=" + ctx.attr.priority]
if ctx.attr.section:
args += ["--section=" + ctx.attr.section]
if ctx.attr.homepage:
args += ["--homepage=" + ctx.attr.homepage]
args += ["--depends=" + d for d in ctx.attr.depends]
args += ["--suggests=" + d for d in ctx.attr.suggests]
args += ["--enhances=" + d for d in ctx.attr.enhances]
args += ["--pre_depends=" + d for d in ctx.attr.predepends]
args += ["--recommends=" + d for d in ctx.attr.recommends]
ctx.action(
executable = ctx.executable._make_deb,
arguments = args,
inputs = files,
outputs = [ctx.outputs.deb],
mnemonic="MakeDeb"
)
ctx.action(
command = "ln -s %s %s" % (ctx.outputs.deb.basename, ctx.outputs.out.path),
inputs = [ctx.outputs.deb],
outputs = [ctx.outputs.out])
# A rule for creating a tar file, see README.md
pkg_tar = rule(
implementation = _pkg_tar_impl,
attrs = {
"strip_prefix": attr.string(),
"package_dir": attr.string(default="/"),
"deps": attr.label_list(allow_files=tar_filetype),
"files": attr.label_list(allow_files=True),
"mode": attr.string(default="0555"),
"modes": attr.string_dict(),
"extension": attr.string(default="tar"),
"symlinks": attr.string_dict(),
# Implicit dependencies.
"_build_tar": attr.label(
default=Label("//tools/build_defs/pkg:build_tar"),
cfg=HOST_CFG,
executable=True,
allow_files=True)
},
outputs = {
"out": "%{name}.%{extension}",
},
executable = False)
# A rule for creating a deb file, see README.md
pkg_deb = rule(
implementation = _pkg_deb_impl,
attrs = {
"data": attr.label(mandatory=True, allow_files=tar_filetype, single_file=True),
"package": attr.string(mandatory=True),
"architecture": attr.string(default="all"),
"maintainer": attr.string(mandatory=True),
"preinst": attr.label(allow_files=True, single_file=True),
"postinst": attr.label(allow_files=True, single_file=True),
"prerm": attr.label(allow_files=True, single_file=True),
"postrm": attr.label(allow_files=True, single_file=True),
"version_file": attr.label(allow_files=True, single_file=True),
"version": attr.string(),
"description_file": attr.label(allow_files=True, single_file=True),
"description": attr.string(),
"built_using_file": attr.label(allow_files=True, single_file=True),
"built_using": attr.string(),
"priority": attr.string(),
"section": attr.string(),
"homepage": attr.string(),
"depends": attr.string_list(default=[]),
"suggests": attr.string_list(default=[]),
"enhances": attr.string_list(default=[]),
"predepends": attr.string_list(default=[]),
"recommends": attr.string_list(default=[]),
# Implicit dependencies.
"_make_deb": attr.label(
default=Label("//tools/build_defs/pkg:make_deb"),
cfg=HOST_CFG,
executable=True,
allow_files=True)
},
outputs = {
"out": "%{name}.deb",
"deb": "%{package}_%{version}_%{architecture}.deb",
},
executable = False)
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