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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.
load("//tools/build_rules:deprecation.bzl", "deprecated")
def warning(rule):
print(deprecated(
"sass",
rule,
"@bazel_tools//tools/build_defs/sass:sass.bzl",
"@io_bazel_rules_sass//sass:sass.bzl"))
SASS_FILETYPES = FileType([
".sass",
".scss",
])
def collect_transitive_sources(ctx):
source_files = set(order="compile")
for dep in ctx.attr.deps:
source_files += dep.transitive_sass_files
return source_files
def _sass_library_impl(ctx):
warning("sass_library")
transitive_sources = collect_transitive_sources(ctx)
transitive_sources += SASS_FILETYPES.filter(ctx.files.srcs)
return struct(
files = set(),
transitive_sass_files = transitive_sources)
def _sass_binary_impl(ctx):
# Reference the sass compiler and define the default options
# that sass_binary uses.
warning("sass_binary")
sassc = ctx.file._sassc
options = [
"--style={0}".format(ctx.attr.output_style),
"--sourcemap",
]
# Load up all the transitive sources as dependent includes.
transitive_sources = collect_transitive_sources(ctx)
for src in transitive_sources:
options += ["-I={0}".format(src)]
ctx.action(
inputs = [sassc, ctx.file.src] + list(transitive_sources),
executable = sassc,
arguments = options + [ctx.file.src.path, ctx.outputs.css_file.path],
mnemonic = "SassCompiler",
outputs = [ctx.outputs.css_file, ctx.outputs.css_map_file],
)
sass_deps_attr = attr.label_list(
providers = ["transitive_sass_files"],
allow_files = False,
)
sass_library = rule(
attrs = {
"srcs": attr.label_list(
allow_files = SASS_FILETYPES,
non_empty = True,
mandatory = True,
),
"deps": sass_deps_attr,
},
implementation = _sass_library_impl,
)
sass_binary = rule(
attrs = {
"src": attr.label(
allow_files = SASS_FILETYPES,
mandatory = True,
single_file = True,
),
"output_style": attr.string(default = "compressed"),
"deps": sass_deps_attr,
"_sassc": attr.label(
default = Label("@bazel_tools//tools/build_defs/sass:sassc"),
executable = True,
single_file = True,
),
},
outputs = {
"css_file": "%{name}.css",
"css_map_file": "%{name}.css.map",
},
implementation = _sass_binary_impl,
)
LIBSASS_BUILD_FILE = """
package(default_visibility = ["@sassc//:__pkg__"])
filegroup(
name = "srcs",
srcs = glob([
"src/**/*.h*",
"src/**/*.c*",
]),
)
# Includes directive may seem unnecessary here, but its needed for the weird
# interplay between libsass/sassc projects. This is intentional.
cc_library(
name = "headers",
includes = ["include"],
hdrs = glob(["include/**/*.h"]),
)
"""
SASSC_BUILD_FILE = """
package(default_visibility = ["//visibility:public"])
cc_binary(
name = "sassc",
srcs = [
"@libsass//:srcs",
"sassc.c",
"sassc_version.h",
],
linkopts = ["-ldl", "-lm"],
deps = ["@libsass//:headers"],
)
"""
def sass_repositories():
warning("sass_repositories")
native.new_http_archive(
name = "libsass",
url = "https://github.com/sass/libsass/archive/3.3.0-beta1.tar.gz",
sha256 = "6a4da39cc0b585f7a6ee660dc522916f0f417c890c3c0ac7ebbf6a85a16d220f",
build_file_content = LIBSASS_BUILD_FILE,
strip_prefix = "libsass-3.3.0-beta1",
)
native.new_http_archive(
name = "sassc",
url = "https://github.com/sass/sassc/archive/3.3.0-beta1.tar.gz",
sha256 = "87494218eea2441a7a24b40f227330877dbba75c5fa9014ac6188711baed53f6",
build_file_content = SASSC_BUILD_FILE,
strip_prefix = "sassc-3.3.0-beta1",
)
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