package main import ( "bytes" "exec" "os" "strings" ) // run is a simple wrapper for exec.Run/Close func run(envv []string, dir string, argv ...string) os.Error { bin, err := pathLookup(argv[0]) if err != nil { return err } p, err := exec.Run(bin, argv, envv, dir, exec.DevNull, exec.DevNull, exec.PassThrough) if err != nil { return err } return p.Close() } // runLog runs a process and returns the combined stdout/stderr func runLog(envv []string, dir string, argv ...string) (output string, exitStatus int, err os.Error) { bin, err := pathLookup(argv[0]) if err != nil { return } p, err := exec.Run(bin, argv, envv, dir, exec.DevNull, exec.Pipe, exec.MergeWithStdout) if err != nil { return } defer p.Close() b := new(bytes.Buffer) _, err = b.ReadFrom(p.Stdout) if err != nil { return } w, err := p.Wait(0) if err != nil { return } return b.String(), w.WaitStatus.ExitStatus(), nil } // Find bin in PATH if a relative or absolute path hasn't been specified func pathLookup(s string) (string, os.Error) { if strings.HasPrefix(s, "/") || strings.HasPrefix(s, "./") || strings.HasPrefix(s, "../") { return s, nil } return exec.LookPath(s) }