[build] move copyright from rake task to a bazel target

Rakefile

@@ -45,7 +45,6 @@ require 'rake_tasks/bazel/task'
 # These are the final items mixed into the global NS
 # These need moving into correct namespaces, and not be globally included
 require 'rake_tasks/bazel'
-require 'rake_tasks/copyright'
 require 'rake_tasks/python'
 
 $DEBUG = orig_verbose != Rake::FileUtilsExt::DEFAULT
@@ -440,39 +439,6 @@ task :authors do
   sh "(git log --use-mailmap --format='%aN <%aE>' ; cat .OLD_AUTHORS) | sort -uf > AUTHORS"
 end
 
-namespace :copyright do
-  desc 'Update Copyright notices on all files in repo'
-  task :update do
-    Copyright.new.update(
-      FileList['javascript/**/*.js'].exclude(
-        'javascript/atoms/test/jquery.min.js',
-        'javascript/jsunit/**/*.js',
-        'javascript/node/selenium-webdriver/node_modules/**/*.js',
-        'javascript/selenium-core/lib/**/*.js',
-        'javascript/selenium-core/scripts/ui-element.js',
-        'javascript/selenium-core/scripts/ui-map-sample.js',
-        'javascript/selenium-core/scripts/user-extensions.js',
-        'javascript/selenium-core/scripts/xmlextras.js',
-        'javascript/selenium-core/xpath/**/*.js',
-        'javascript/grid-ui/node_modules/**/*.js'
-      )
-    )
-    Copyright.new.update(FileList['javascript/**/*.tsx'])
-    Copyright.new(comment_characters: '#').update(FileList['py/**/*.py'].exclude(
-                                                    'py/selenium/webdriver/common/bidi/cdp.py',
-                                                    'py/generate.py',
-                                                    'py/selenium/webdriver/common/devtools/**/*',
-                                                    'py/venv/**/*'
-                                                  ))
-    Copyright.new(comment_characters: '#', prefix: ["# frozen_string_literal: true\n", "\n"])
-             .update(FileList['rb/**/*.rb'])
-    Copyright.new.update(FileList['java/**/*.java'])
-    Copyright.new.update(FileList['rust/**/*.rs'])
-
-    sh './scripts/format.sh'
-  end
-end
-
 namespace :side do
   task atoms: [
     '//javascript/atoms/fragments:find-element'

scripts/BUILD.bazel

@@ -27,6 +27,11 @@ py_binary(
     ],
 )
 
+py_binary(
+    name = "update_copyright",
+    srcs = ["update_copyright.py"],
+)
+
 java_binary(
     name = "google-java-format",
     jvm_flags = [

scripts/format.sh

@@ -19,3 +19,6 @@ find "$PWD/java" -type f -name '*.java' | xargs "$GOOGLE_JAVA_FORMAT" --replace
 section "Rust"
 echo "   rustfmt" >&2
 bazel run @rules_rust//:rustfmt
+
+section "Copyright"
+bazel run //scripts:update_copyright

scripts/update_copyright.py

@@ -0,0 +1,111 @@
+#!/usr/bin/env python
+
+import glob
+import os
+from pathlib import Path
+
+class Copyright:
+    NOTICE = """Licensed to the Software Freedom Conservancy (SFC) under one
+or more contributor license agreements.  See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership.  The SFC licenses this file
+to you 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."""
+
+    def __init__(self, comment_characters='//', prefix=None):
+        self._comment_characters = comment_characters
+        self._prefix = prefix or []
+
+    def update(self, files):
+        for file in files:
+            with open(file, 'r') as f:
+                lines = f.readlines()
+
+            index = -1
+            for i, line in enumerate(lines):
+                if line.startswith(self._comment_characters) or \
+                  self.valid_copyright_notice_line(line, index):
+                    index += 1
+                else:
+                    break
+
+            if index == -1:
+                self.write_update_notice(file, lines)
+            else:
+                current = ''.join(lines[:index + 1])
+                if current != self.copyright_notice:
+                    self.write_update_notice(file, lines[index + 1:])
+
+    def valid_copyright_notice_line(self, line, index):
+        return index + 1 < len(self.copyright_notice_lines) and \
+            line.startswith(self.copyright_notice_lines[index + 1])
+
+    @property
+    def copyright_notice(self):
+        return ''.join(self.copyright_notice_lines)
+
+    @property
+    def copyright_notice_lines(self):
+        return self._prefix + self.commented_notice_lines
+
+    @property
+    def commented_notice_lines(self):
+        return [f"{self._comment_characters} {line}".rstrip() + "\n" for line in self.NOTICE.split('\n')]
+
+    def write_update_notice(self, file, lines):
+        print(f"Adding notice to {file}")
+        with open(file, 'w') as f:
+            f.write(self.copyright_notice + "\n")
+            f.writelines(lines)
+
+ROOT = Path(os.path.realpath(__file__)).parent.parent
+
+JS_EXCLUSIONS = [
+    f"{ROOT}/javascript/atoms/test/jquery.min.js",
+    f"{ROOT}/javascript/jsunit/**/*.js",
+    f"{ROOT}/javascript/node/selenium-webdriver/node_modules/**/*.js",
+    f"{ROOT}/javascript/selenium-core/lib/**/*.js",
+    f"{ROOT}/javascript/selenium-core/scripts/ui-element.js",
+    f"{ROOT}/javascript/selenium-core/scripts/ui-map-sample.js",
+    f"{ROOT}/javascript/selenium-core/scripts/user-extensions.js",
+    f"{ROOT}/javascript/selenium-core/scripts/xmlextras.js",
+    f"{ROOT}/javascript/selenium-core/xpath/**/*.js",
+    f"{ROOT}/javascript/grid-ui/node_modules/**/*.js"
+]
+
+PY_EXCLUSIONS = [
+    f"{ROOT}/py/selenium/webdriver/common/bidi/cdp.py",
+    f"{ROOT}/py/generate.py",
+    f"{ROOT}/py/selenium/webdriver/common/devtools/**/*",
+    f"{ROOT}/py/venv/**/*"
+]
+
+
+def update_files(file_pattern, exclusions, comment_characters='//', prefix=None):
+    included = set(glob.glob(file_pattern, recursive=True))
+    excluded = set()
+    for pattern in exclusions:
+        excluded.update(glob.glob(pattern, recursive=True))
+    files = included - excluded
+
+    copyright = Copyright(comment_characters, prefix)
+    copyright.update(files)
+
+
+if __name__ == "__main__":
+    update_files(f"{ROOT}/javascript/**/*.js", JS_EXCLUSIONS)
+    update_files(f"{ROOT}/javascript/**/*.tsx", [])
+    update_files(f"{ROOT}/py/**/*.py", PY_EXCLUSIONS, comment_characters="#")
+    update_files(f"{ROOT}/rb/**/*.rb", [], comment_characters="#", prefix=["# frozen_string_literal: true\n", "\n"])
+    update_files(f"{ROOT}/java/**/*.java", [])
+    update_files(f"{ROOT}/rust/**/*.rs", [])