Add support for relative paths to the Bazel build (#41)

Pull in apple_relative_framework.bzl.
bazel test now works as expected.

BUILD

@@ -15,6 +15,7 @@
 load("@bazel_ios_warnings//:strict_warnings_objc_library.bzl", "strict_warnings_objc_library")
 load("@build_bazel_rules_apple//apple:swift.bzl", "swift_library")
 load("@build_bazel_rules_apple//apple:ios.bzl", "ios_unit_test")
+load(":apple_framework_relative_headers.bzl", "apple_framework_relative_headers")
 
 licenses(["notice"]) # Apache 2.0
 
@@ -38,12 +39,20 @@ strict_warnings_objc_library(
  visibility = ["//visibility:public"],
 )
 
+apple_framework_relative_headers(
+ name = "MDFInternationalizationFrameworkHeaders",
+ hdrs = glob([
+ "Sources/*.h",
+ ]),
+ framework_name = "MDFInternationalization",
+)
+
 objc_library(
  name = "UnitTestsLib",
  srcs = glob([
  "Tests/*.m",
  ]),
- deps = [":MDFInternationalization"],
+ deps = [":MDFInternationalization", ":MDFInternationalizationFrameworkHeaders"],
  visibility = ["//visibility:private"],
 )
 

WORKSPACE

@@ -12,6 +12,21 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+
+#git_repository(
+# name = "io_bazel",
+# remote = "https://github.com/bazelbuild/bazel.git",
+# tag = "0.14.0",
+#)
+
+
+
+git_repository(
+ name = "com_github_bazelbuild_buildtools",
+ remote = "https://github.com/bazelbuild/buildtools.git",
+ tag = "0.11.1",
+)
+
 git_repository(
  name = "build_bazel_rules_apple",
  remote = "https://github.com/bazelbuild/rules_apple.git",

apple_framework_relative_headers.bzl

@@ -0,0 +1,60 @@
+"""Bazel rules for supporting framework-relative header imports."""
+
+load("@build_bazel_rules_apple//apple/bundling:file_actions.bzl", "file_actions")
+
+
+def _apple_framework_relative_headers_impl(ctx):
+ """Implementation for apple_framework_relative_headers rule."""
+ output_dir = ctx.attr.framework_name + "_apple_framework_relative_headers"
+
+ outputs = []
+ for f in ctx.files.hdrs:
+ framework_path = "/".join([output_dir, ctx.attr.framework_name, f.basename])
+ framework_header_file = ctx.actions.declare_file(framework_path)
+ file_actions.symlink(ctx, f, framework_header_file)
+ outputs.append(framework_header_file)
+
+ include_dir = "/".join([
+ ctx.configuration.bin_dir.path, ctx.label.package, output_dir])
+ return [
+ apple_common.new_objc_provider(
+ header=depset(outputs),
+ include=depset([include_dir]),
+ ),
+ DefaultInfo(files=depset(outputs)),
+ ]
+
+
+apple_framework_relative_headers = rule(
+ _apple_framework_relative_headers_impl,
+ attrs = {
+ "hdrs": attr.label_list(allow_files=[".h"], allow_empty=False),
+ "framework_name": attr.string(mandatory=True),
+ "_realpath": attr.label(
+ cfg="host",
+ allow_files=True,
+ single_file=True,
+ default=Label("@bazel_tools//tools/objc:realpath"),
+ ),
+ },
+)
+"""Creates a directory structure suitable for framework-relative import
+statements.
+
+For example, one would be able to #import <Foo/Bar.h> given the following rules:
+
+ apple_framework_relative_headers(
+ name = "FooFrameworkHeaders",
+ hdrs = ["Source/Bar.h"],
+ framework_name = "Foo",
+ )
+
+ objc_library(
+ ...
+ deps = [":FooFrameworkHeaders"],
+ )
+
+Args:
+ hdrs: The list of header files.
+ framework_name: The name of the framework.
+"""