1 files changed, 77 insertions, 0 deletions
diff --git a/go/tools/gopackagesdriver/utils.go b/go/tools/gopackagesdriver/utils.go
new file mode 100644
index 00000000..d5524fdd
--- /dev/null
+++ b/go/tools/gopackagesdriver/utils.go
@@ -0,0 +1,77 @@
+// Copyright 2021 The Bazel Authors. All rights reserved.
+//
+// Licensed 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.
+
+package main
+
+import (
+	"context"
+	"fmt"
+	"go/build"
+	"os"
+	"os/signal"
+	"path"
+	"path/filepath"
+)
+
+func getenvDefault(key, defaultValue string) string {
+	if v, ok := os.LookupEnv(key); ok {
+		return v
+	}
+	return defaultValue
+}
+
+func concatStringsArrays(values ...[]string) []string {
+	ret := []string{}
+	for _, v := range values {
+		ret = append(ret, v...)
+	}
+	return ret
+}
+
+func ensureAbsolutePathFromWorkspace(path string) string {
+	if filepath.IsAbs(path) {
+		return path
+	}
+	return filepath.Join(workspaceRoot, path)
+}
+
+func signalContext(parentCtx context.Context, signals ...os.Signal) (ctx context.Context, stop context.CancelFunc) {
+	ctx, cancel := context.WithCancel(parentCtx)
+	ch := make(chan os.Signal, 1)
+	go func() {
+		select {
+		case <-ch:
+			cancel()
+		case <-ctx.Done():
+		}
+	}()
+	signal.Notify(ch, signals...)
+
+	return ctx, cancel
+}
+
+func isLocalPattern(pattern string) bool {
+	return build.IsLocalImport(pattern) || filepath.IsAbs(pattern)
+}
+
+func packageID(pattern string) string {
+	pattern = path.Clean(pattern)
+	if filepath.IsAbs(pattern) {
+		if relPath, err := filepath.Rel(workspaceRoot, pattern); err == nil {
+			pattern = relPath
+		}
+	}
+
+	return fmt.Sprintf("//%s", pattern)
+}