1 files changed, 52 insertions, 0 deletions
diff --git a/toolchain_utils_githooks/check-presubmit b/toolchain_utils_githooks/check-presubmit
new file mode 100755
index 00000000..e67611f5
--- /dev/null
+++ b/toolchain_utils_githooks/check-presubmit
@@ -0,0 +1,52 @@
+#!/bin/bash -eu
+# Copyright 2019 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+#
+# Convenient wrapper to run presubmit checks in parallel without interleaving
+# output/etc.
+
+if [[ $# -eq 0 ]]; then
+  echo "No files were given to check the style of. Exiting." >&2
+  exit
+fi
+
+mydir="$(dirname "$(readlink -m "$0")")"
+pydir="${mydir}/.."
+
+if [[ -z "${PYTHONPATH:-}" ]]; then
+  export PYTHONPATH="${pydir}"
+else
+  export PYTHONPATH="${pydir}:${PYTHONPATH}"
+fi
+
+tempfiles=()
+rm_tempfiles() {
+  rm -f "${tempfiles[@]}"
+}
+
+trap rm_tempfiles EXIT
+
+child_pids=()
+spawn_child() {
+  local tempfile
+  tempfile="$(mktemp)"
+  tempfiles+=( "${tempfile}" )
+  "$@" >"${tempfile}" 2>&1 &
+  child_pids+=( "$!" )
+}
+
+# We have a few things to do in parallel here. To avoid interleaving their
+# output, we pipe them all to tempfiles, then cat those tempfiles.
+
+spawn_child "${mydir}/check-lint" "$@"
+spawn_child "${mydir}/check-format" "$@"
+spawn_child "${mydir}/../run_tests_for.py" "$@"
+
+success=true
+for i in "${!child_pids[@]}"; do
+  wait "${child_pids[$i]}" || success=false
+  cat "${tempfiles[$i]}"
+done
+
+"${success}"