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// 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"
"os"
"os/signal"
"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
}
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