mirror of
https://github.com/golang/go
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548e3d0342
1) runLog to return err==nil if program runs, but returns exitcode!=0; 2) runLog to return err!=nil when fails to create log file; 3) print failed program name, not just "all.bash". R=golang-dev, adg CC=golang-dev https://golang.org/cl/4532117
75 lines
1.7 KiB
Go
75 lines
1.7 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import (
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"bytes"
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"exec"
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"io"
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"log"
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"os"
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"strings"
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)
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// run is a simple wrapper for exec.Run/Close
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func run(envv []string, dir string, argv ...string) os.Error {
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if *verbose {
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log.Println("run", argv)
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}
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argv = useBash(argv)
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cmd := exec.Command(argv[0], argv[1:]...)
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cmd.Dir = dir
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cmd.Env = envv
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cmd.Stderr = os.Stderr
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return cmd.Run()
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}
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// runLog runs a process and returns the combined stdout/stderr,
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// as well as writing it to logfile (if specified). It returns
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// process combined stdout and stderr output, exit status and error.
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// The error returned is nil, if process is started successfully,
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// even if exit status is not 0.
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func runLog(envv []string, logfile, dir string, argv ...string) (string, int, os.Error) {
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if *verbose {
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log.Println("runLog", argv)
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}
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argv = useBash(argv)
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b := new(bytes.Buffer)
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var w io.Writer = b
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if logfile != "" {
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f, err := os.OpenFile(logfile, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666)
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if err != nil {
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return "", 0, err
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}
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defer f.Close()
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w = io.MultiWriter(f, b)
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}
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cmd := exec.Command(argv[0], argv[1:]...)
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cmd.Dir = dir
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cmd.Env = envv
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cmd.Stdout = w
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cmd.Stderr = w
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err := cmd.Run()
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if err != nil {
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if ws, ok := err.(*os.Waitmsg); ok {
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return b.String(), ws.ExitStatus(), nil
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}
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}
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return b.String(), 0, nil
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}
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// useBash prefixes a list of args with 'bash' if the first argument
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// is a bash script.
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func useBash(argv []string) []string {
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// TODO(brainman): choose a more reliable heuristic here.
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if strings.HasSuffix(argv[0], ".bash") {
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argv = append([]string{"bash"}, argv...)
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}
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return argv
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}
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