Zip package files for distribution

* Rename BUILD -> BUILD.bazel, which is the preferred naming scheme.
* Remove tests (especially old conformance tests) and test data from
distribution.
* Add license file

zip package files for distribution

Author: dibenede

BUILD

@@ -0,0 +1,61 @@
+# Protobuf JS runtime
+#
+# See also code generation logic under generator/
+
+load("@rules_pkg//:mappings.bzl", "pkg_attributes", "pkg_files", "strip_prefix")
+load("@rules_pkg//:pkg.bzl", "pkg_tar", "pkg_zip")
+load("//:protobuf_javascript_release.bzl", "package_naming")
+
+package_naming(
+    name = "protobuf_javascript_pkg_naming",
+)
+
+pkg_files(
+    name = "plugin_files",
+    srcs = ["//generator:protoc-gen-js"],
+    attributes = pkg_attributes(mode = "0555"),
+    prefix = "bin/",
+)
+
+pkg_files(
+    name = "dist_files",
+    srcs = glob([
+        "google/protobuf/*.js",
+        "google/protobuf/compiler/*.js"
+    ]) + [
+        "google-protobuf.js",
+        "package.json",
+        "README.md",
+        "LICENSE.md",
+    ],
+    strip_prefix = strip_prefix.from_root(""),
+)
+
+pkg_tar(
+    name = "dist_tar",
+    srcs = [
+        ":dist_files",
+        ":plugin_files",
+    ],
+    extension = "tar.gz",
+    package_file_name = "protobuf-javascript-{version}-{platform}.tar.gz",
+    package_variables = ":protobuf_javascript_pkg_naming",
+)
+
+pkg_zip(
+    name = "dist_zip",
+    srcs = [
+        ":dist_files",
+        ":plugin_files",
+    ],
+    package_file_name = "protobuf-javascript-{version}-{platform}.zip",
+    package_variables = ":protobuf_javascript_pkg_naming",
+)
+
+filegroup(
+    name = "dist_all",
+    srcs = [
+        ":dist_tar",
+        ":dist_zip",
+    ]
+)

BUILD.bazel

@@ -11,3 +11,6 @@ http_archive(
 load("@com_google_protobuf//:protobuf_deps.bzl", "protobuf_deps")
 
 protobuf_deps()
+
+load("@rules_pkg//:deps.bzl", "rules_pkg_dependencies")
+rules_pkg_dependencies()

LICENSE renamed to LICENSE.md

@@ -9,11 +9,8 @@ cc_binary(
     ],
     visibility = ["//visibility:public"],
     deps = [
-        #"@com_google_absl//absl/base:core_headers",
-        #"@com_google_absl//absl/container:flat_hash_map",
-        #"@com_google_absl//absl/container:flat_hash_set",
-        #"@com_google_absl//absl/strings",
         "@com_google_protobuf//:protobuf",
         "@com_google_protobuf//:protoc_lib",
     ],
 )
+

WORKSPACE

@@ -0,0 +1,51 @@
+"""
+Generates package naming variables for use with rules_pkg.
+"""
+
+load("@rules_pkg//:providers.bzl", "PackageVariablesInfo")
+load("@bazel_tools//tools/cpp:toolchain_utils.bzl", "find_cpp_toolchain")
+
+_PROTOBUF_JAVASCRIPT_VERSION = '3.21.0'
+
+def _package_naming_impl(ctx):
+  values = {}
+  values["version"] = _PROTOBUF_JAVASCRIPT_VERSION
+
+  # infer from the current cpp toolchain.
+  toolchain = find_cpp_toolchain(ctx)
+  cpu = toolchain.cpu
+  system_name = toolchain.target_gnu_system_name
+
+  # rename cpus to match what we want artifacts to be
+  if cpu == "systemz":
+    cpu = "s390_64"
+  elif cpu == "aarch64":
+    cpu = "aarch_64"
+  elif cpu == "ppc64":
+    cpu = "ppcle_64"
+
+  # use the system name to determine the os and then create platform names
+  if "apple" in system_name:
+    values["platform"] = "osx-" + cpu
+  elif "linux" in system_name:
+    values["platform"] = "linux-" + cpu
+  elif "mingw" in system_name:
+    if cpu == "x86_64":
+      values["platform"] = "win64"
+    else:
+      values["platform"] = "win32"
+  else:
+    values["platform"] = "unknown"
+
+  return PackageVariablesInfo(values = values)
+
+
+package_naming = rule(
+  implementation = _package_naming_impl,
+    attrs = {
+      # Necessary data dependency for find_cpp_toolchain.
+      "_cc_toolchain": attr.label(default = Label("@bazel_tools//tools/cpp:current_cc_toolchain")),
+    },
+    toolchains = ["@bazel_tools//tools/cpp:toolchain_type"],
+    incompatible_use_toolchain_transition = True,
+)