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feat: expose common tar variables (#679)

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Sahin Yort 2023-12-07 12:29:35 -08:00 committed by Greg Magolan
parent 6a543815f1
commit d9368f04ff
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1 changed files with 47 additions and 5 deletions
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52
lib/private/tar.bzl
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@ -1,5 +1,41 @@
"Implementation of tar rule"
TAR_TOOLCHAIN_TYPE = "@aspect_bazel_lib//lib:tar_toolchain_type"
# https://www.gnu.org/software/tar/manual/html_section/Compression.html
_ACCEPTED_EXTENSIONS = [
".tar", # uncompressed,
".gz", # gzip
".tgz", # gzip
".taz", # gzip
".Z", # compress
".taZ", # compress
".bz2", # bzip2
".tz2", # bzip2
".tbz2", # bzip2
".tbz", # bzip2
".lz", # lzip
".lzma", # lzma
".tlz", # lzma
".lzo", # lzop
".xz", # xz
".zst", # zstd
".tzst", # zstd
]
# https://www.gnu.org/software/tar/manual/html_section/Compression.html
_ACCEPTED_COMPRESSION_TYPES = [
"bzip2",
"compress",
"gzip",
"lrzip",
"lz4",
"lzma",
"lzop",
"xz",
"zstd",
]
_tar_attrs = {
"args": attr.string_list(
doc = "Additional flags permitted by BSD tar; see the man page.",
@ -43,7 +79,7 @@ _tar_attrs = {
),
"compress": attr.string(
doc = "Compress the archive file with a supported algorithm.",
values = ["bzip2", "compress", "gzip", "lrzip", "lz4", "lzma", "lzop", "xz", "zstd"],
values = _ACCEPTED_COMPRESSION_TYPES,
),
}
@ -52,7 +88,7 @@ _mtree_attrs = {
"out": attr.output(doc = "Resulting specification file to write"),
}
def _add_compress_options(compress, args):
def _add_compression_args(compress, args):
if compress == "bzip2":
args.add("--bzip2")
if compress == "compress":
@ -87,7 +123,7 @@ def _calculate_runfiles_dir(default_info):
fail("manifest path {} seems malformed".format(manifest.short_path))
def _tar_impl(ctx):
bsdtar = ctx.toolchains["@aspect_bazel_lib//lib:tar_toolchain_type"]
bsdtar = ctx.toolchains[TAR_TOOLCHAIN_TYPE]
inputs = ctx.files.srcs[:]
args = ctx.actions.args()
@ -98,7 +134,7 @@ def _tar_impl(ctx):
args.add_all(ctx.attr.args)
# Compression args
_add_compress_options(ctx.attr.compress, args)
_add_compression_args(ctx.attr.compress, args)
out = ctx.outputs.out or ctx.actions.declare_file(ctx.attr.name + ".tar")
args.add("--file", out)
@ -198,11 +234,17 @@ tar_lib = struct(
implementation = _tar_impl,
mtree_attrs = _mtree_attrs,
mtree_implementation = _mtree_impl,
toolchain_type = TAR_TOOLCHAIN_TYPE,
common = struct(
accepted_tar_extensions = _ACCEPTED_EXTENSIONS,
accepted_compression_types = _ACCEPTED_COMPRESSION_TYPES,
add_compression_args = _add_compression_args,
),
)
tar = rule(
doc = "Rule that executes BSD `tar`. Most users should use the [`tar`](#tar) macro, rather than load this directly.",
implementation = tar_lib.implementation,
attrs = tar_lib.attrs,
toolchains = ["@aspect_bazel_lib//lib:tar_toolchain_type"],
toolchains = [tar_lib.toolchain_type],
)