Factor out dependency setup into workspace.bzl so that can be used by consumers

PiperOrigin-RevId: 432522663

2 files changed, 72 insertions, 17 deletions

diff --git a/WORKSPACE b/WORKSPACE
index 50f3866..371fa3e 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -12,20 +12,5 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
-
-git_repository(
-    name = "com_google_absl",
-    remote = "https://github.com/abseil/abseil-cpp.git",
-    # tag = "20211102.0",
-    commit = "215105818dfde3174fe799600bb0f3cae233d0bf",
-    shallow_since = "1635953174 -0400"
-)
-
-git_repository(
-    name = "com_google_googletest",
-    remote = "https://github.com/google/googletest.git",
-    # tag = "release-1.11.0",
-    commit = "e2239ee6043f73722e7aa812a459f54a28552929",
-    shallow_since = "1623433346 -0700"
-)
+load(":workspace.bzl", "ink_stroke_modeler_workspace")
+ink_stroke_modeler_workspace()
diff --git a/workspace.bzl b/workspace.bzl
new file mode 100644
index 0000000..00fc679
--- /dev/null
+++ b/workspace.bzl
@@ -0,0 +1,70 @@
+# Copyright 2022 Google LLC
+#
+# 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.
+
+"""Set up dependencies for Ink Stroke Modeler.
+
+To use this from a consumer, add the following to your WORKSPACE setup:
+
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+
+# https://bazel.build/rules/lib/repo/git#git_repository
+git_repository(
+    name = "ink_stroke_modeler",
+    remote = "https://github.com/google/ink-stroke-modeler.git",
+    branch = "main",
+)
+load("@ink_stroke_modeler//:workspace.bzl", "ink_stroke_modeler_workspace")
+ink_stroke_modeler_workspace()
+
+If you want to make it possible for your consumer to be consumed by other
+Bazel projects, factor that setup into a workspace.bzl file, following
+the pattern below.
+
+If you want to use a local version of this repo instead, use local_repository
+instead of git_repository:
+
+# https://bazel.build/reference/be/workspace#local_repository
+local_repository(
+    name = "ink_stroke_modeler",
+    path = "path/to/ink-stroke-modeler",
+)
+
+Ink Stroke Modeler requires C++17. This is not currently the default for Bazel,
+--cxxopt='-std=c++17' (or newer) is required. You can put the following in
+.bazelrc at your project's root:
+
+build --cxxopt='-std=c++17'
+"""
+
+load("@bazel_tools//tools/build_defs/repo:git.bzl", "git_repository")
+load("@bazel_tools//tools/build_defs/repo:utils.bzl", "maybe")
+
+def ink_stroke_modeler_workspace():
+    maybe(
+        git_repository,
+        name = "com_google_absl",
+        remote = "https://github.com/abseil/abseil-cpp.git",
+        # tag = "20211102.0",
+        commit = "215105818dfde3174fe799600bb0f3cae233d0bf",
+        shallow_since = "1635953174 -0400",
+    )
+
+    maybe(
+        git_repository,
+        name = "com_google_googletest",
+        remote = "https://github.com/google/googletest.git",
+        # tag = "release-1.11.0",
+        commit = "e2239ee6043f73722e7aa812a459f54a28552929",
+        shallow_since = "1623433346 -0700",
+    )