Add initial implementation for running SBT commands.

pre_commit/languages/sbt.py

@@ -0,0 +1,44 @@
+from __future__ import annotations
+
+from typing import Sequence
+
+from pre_commit.hook import Hook
+from pre_commit.languages import helpers
+
+ENVIRONMENT_DIR = None
+install_environment = helpers.no_install
+health_check = helpers.basic_health_check
+get_default_version = helpers.basic_get_default_version
+
+
+def run_hook(
+        hook: Hook,
+        file_args: Sequence[str],
+        color: bool,
+) -> tuple[int, bytes]:
+    # TODO: Improve impl to connect to run commands via SBT server
+    return run_sbt_hook_via_commandline(hook, file_args, color)
+
+
+def run_sbt_hook_via_commandline(
+        hook: Hook,
+        file_args: Sequence[str],
+        color: bool,
+) -> tuple[int, bytes]:
+    """
+    Run an SBT hook, via the commandline. The command to be run is:
+        sbt ${entry} ${args} ${files}
+    The entry and args will not be quoted (so should be wrapped in quotes as
+    appropriate by the hook author),however files will be quoted, so any
+    filenames with spaces will be interpreted as a single argument by SBT
+    """
+    entry_part = hook.entry
+    args_part = ' '.join(hook.args)
+    files_part = ' '.join(_quote(file) for file in file_args)
+    sbt_command = f'{entry_part} {args_part} {files_part}'
+    shell_cmd = ('sbt', sbt_command)
+    return helpers.run_xargs(hook, shell_cmd, [], color=color)
+
+
+def _quote(s: str) -> str:
+    return f"\"{s}\""