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bindata.bzl
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bindata.bzl
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# Copyright 2018 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.
"""bindata.bzl provides the bindata rule for embedding data in .go files"""
load(
"@io_bazel_rules_go//go:def.bzl",
"go_context",
)
load(
"@io_bazel_rules_go//go/private/rules:rule.bzl",
"go_rule",
)
def _bindata_impl(ctx):
go = go_context(ctx)
out = go.declare_file(go, ext = ".go")
arguments = ctx.actions.args()
arguments.add_all([
"-o",
out,
"-pkg",
ctx.attr.package,
"-prefix",
ctx.label.package,
])
if not ctx.attr.compress:
arguments.add("-nocompress")
if not ctx.attr.metadata:
arguments.add("-nometadata")
if not ctx.attr.memcopy:
arguments.add("-nomemcopy")
if not ctx.attr.modtime:
arguments.add_all(["-modtime", "0"])
if ctx.attr.extra_args:
arguments.add_all(ctx.attr.extra_args)
srcs = [f.path for f in ctx.files.srcs]
if ctx.attr.strip_external and any([f.startswith("external/") for f in srcs]):
arguments.add("-prefix", ctx.label.workspace_root + "/" + ctx.label.package)
arguments.add_all(srcs)
ctx.actions.run(
inputs = ctx.files.srcs,
outputs = [out],
mnemonic = "GoBindata",
executable = ctx.executable._bindata,
arguments = [arguments],
)
return [
DefaultInfo(
files = depset([out]),
),
]
bindata = go_rule(
_bindata_impl,
attrs = {
"srcs": attr.label_list(allow_files = True),
"package": attr.string(mandatory = True),
"compress": attr.bool(default = True),
"metadata": attr.bool(default = False),
"memcopy": attr.bool(default = True),
"modtime": attr.bool(default = False),
"strip_external": attr.bool(default = False),
"extra_args": attr.string_list(),
"_bindata": attr.label(
executable = True,
cfg = "host",
default = "@com_github_kevinburke_go_bindata//go-bindata:go-bindata",
),
},
)