1 files changed, 102 insertions, 0 deletions
diff --git a/Common/nvim/lsp/jdt-language-server/bin/jdtls.py b/Common/nvim/lsp/jdt-language-server/bin/jdtls.py
new file mode 100755
index 0000000..43e0980
--- /dev/null
+++ b/Common/nvim/lsp/jdt-language-server/bin/jdtls.py
@@ -0,0 +1,102 @@
+###############################################################################
+# Copyright (c) 2022 Marc Schreiber and others.
+#
+# This program and the accompanying materials are made available under the
+# terms of the Eclipse Public License 2.0 which is available at
+# http://www.eclipse.org/legal/epl-2.0.
+#
+# SPDX-License-Identifier: EPL-2.0
+#
+# Contributors:
+# Marc Schreiber - initial API and implementation
+###############################################################################
+import argparse
+import os
+import platform
+import re
+import subprocess
+from pathlib import Path
+
+def get_java_executable(validate_java_version):
+	java_executable = 'java'
+
+	if 'JAVA_HOME' in os.environ:
+		java_exec_to_test = Path(os.environ['JAVA_HOME']) / 'bin' / 'java'
+		if java_exec_to_test.is_file():
+			java_executable = java_exec_to_test.resolve()
+
+	if not validate_java_version:
+		return java_executable
+
+	out = subprocess.check_output([java_executable, '-version'], stderr = subprocess.STDOUT, universal_newlines=True)
+
+	matches = re.finditer(r"(?P<major>\d+)\.\d+\.\d+", out)
+	for match in matches:
+		java_major_version = int(match.group("major"))
+
+		if java_major_version < 11:
+			raise Exception("jdtls requires at least Java 11")
+
+		return java_executable
+
+	raise Exception("Could not determine Java version")
+
+def find_equinox_launcher(jdtls_base_directory):
+	plugins_dir = jdtls_base_directory / "plugins"
+	launchers = plugins_dir.glob('org.eclipse.equinox.launcher_*.jar')
+	for launcher in launchers:
+		return plugins_dir / launcher
+
+	raise Exception("Cannot find equinox launcher")
+
+def get_shared_config_path(jdtls_base_path):
+	system = platform.system()
+
+	if system == 'Linux':
+		config_dir = 'config_linux'
+	elif system == 'Darwin':
+		config_dir = 'config_mac'
+	elif system == 'Windows':
+		config_dir = 'config_win'
+	else:
+		raise Exception("Unknown platform {} detected".format(platform))
+
+	return jdtls_base_path / config_dir
+
+def main(args):
+	parser = argparse.ArgumentParser()
+	parser.add_argument("--validate-java-version", default=True, action=argparse.BooleanOptionalAction)
+	parser.add_argument("--jvm-arg",
+			default=[],
+			action="append",
+			help="An additional JVM option (can be used multiple times. Note, use with equal sign. For example: --jvm-arg=-Dlog.level=ALL")
+
+	known_args, args = parser.parse_known_args(args)
+	java_executable = get_java_executable(known_args.validate_java_version)
+
+	jdtls_base_path = Path(__file__).parent.parent
+	shared_config_path = get_shared_config_path(jdtls_base_path)
+	jar_path = find_equinox_launcher(jdtls_base_path)
+
+	os.system(("{java_exec}"
+		" -Declipse.application=org.eclipse.jdt.ls.core.id1"
+		" -Dosgi.bundles.defaultStartLevel=4"
+		" -Declipse.product=org.eclipse.jdt.ls.core.product"
+		" -Dosgi.checkConfiguration=true"
+		" -Dosgi.sharedConfiguration.area='{shared_config_path}'"
+		" -Dosgi.sharedConfiguration.area.readOnly=true"
+		" -Dosgi.configuration.cascaded=true"
+		" -noverify"
+		" -Xms1G"
+		" --add-modules=ALL-SYSTEM"
+		" --add-opens java.base/java.util=ALL-UNNAMED"
+		" --add-opens java.base/java.lang=ALL-UNNAMED"
+		" {jvm_options}"
+		" -jar '{jar_path}'"
+		" {args}").format(
+			java_exec = java_executable,
+			shared_config_path = shared_config_path,
+			jar_path = jar_path,
+			jvm_options = " ".join(f"'{w}'" for w in known_args.jvm_arg),
+			args = " ".join(f"'{w}'" for w in args)))
+