78 lines
1.8 KiB
Go
78 lines
1.8 KiB
Go
// Licensed to Elasticsearch B.V. under one or more contributor
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// license agreements. See the NOTICE file distributed with
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// this work for additional information regarding copyright
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// ownership. Elasticsearch B.V. licenses this file to you under
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// the Apache License, Version 2.0 (the "License"); you may
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// not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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// +build ignore
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// This is a simple wrapper to set the GOARCH environment variable, execute the
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// given command, and output the stdout to a file. It's the unix equivalent of
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// GOARCH=arch command > output.
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package main
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import (
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"flag"
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"fmt"
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"os"
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"os/exec"
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"strings"
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)
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var (
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goarch = flag.String("goarch", "", "GOARCH value")
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output = flag.String("output", "", "output file")
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cmd = flag.String("cmd", "", "command to run")
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)
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func main() {
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flag.Parse()
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if err := run(); err != nil {
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fmt.Fprintln(os.Stderr, "error:", err)
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os.Exit(1)
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}
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}
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func run() error {
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// Run command.
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parts := strings.Fields(*cmd)
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cmd := exec.Command(parts[0], parts[1:]...)
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cmd.Env = os.Environ()
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if *goarch != "" {
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cmd.Env = append(cmd.Env, "GOARCH="+*goarch)
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}
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if *output != "" {
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outputBytes, err := cmd.Output()
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if err != nil {
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return err
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}
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// Write output.
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f, err := os.Create(*output)
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if err != nil {
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return err
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}
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defer f.Close()
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_, err = f.Write(outputBytes)
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return err
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}
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cmd.Stdout = cmd.Stdout
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return cmd.Run()
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}
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