90 lines
2.3 KiB
Go
90 lines
2.3 KiB
Go
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package main
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import "log"
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import "strings"
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import "os"
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import "os/exec"
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import "io/ioutil"
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import "errors"
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func runSimpleCommand(s string) {
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cmd := strings.TrimSpace(s) // this is like 'chomp' in perl
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cmd = strings.TrimSuffix(cmd, "\n") // this is like 'chomp' in perl
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cmdArgs := strings.Fields(cmd)
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runLinuxCommand(cmdArgs)
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}
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func xterm(cmd string) {
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var tmp []string
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var argsXterm = []string{"nohup", "xterm", "-geometry", geom}
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if xtermHold.Checked() {
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log.Println("hold = true")
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argsXterm = append(argsXterm, "-hold")
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} else {
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log.Println("hold = false")
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}
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tmp = append(argsXterm, "-e", cmd)
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log.Println("xterm cmd=", tmp)
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go runCommand(tmp)
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}
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func runCommand(cmdArgs []string) {
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log.Println("runCommand() START", cmdArgs)
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process := exec.Command(cmdArgs[0], cmdArgs[1:len(cmdArgs)]...)
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// process := exec.Command("xterm", "-e", "ping localhost")
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log.Println("runCommand() process.Start()")
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process.Start()
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log.Println("runCommand() process.Wait()")
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err := process.Wait()
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lookupError(err)
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log.Println("runCommand() NEED TO CHECK THE TIME HERE TO SEE IF THIS WORKED")
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log.Println("runCommand() OTHERWISE INFORM THE USER")
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log.Println("runCommand() END", cmdArgs)
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}
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func lookupError(err error) {
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var (
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ee *exec.ExitError
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pe *os.PathError
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)
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if errors.As(err, &ee) {
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log.Println("ran, but non-zero exit code =", ee.ExitCode()) // ran, but non-zero exit code
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} else if errors.As(err, &pe) {
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log.Printf("os.PathError = %v", pe) // "no such file ...", "permission denied" etc.
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} else if err != nil {
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log.Printf("something really bad happened general err = %v", err) // something really bad happened!
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if exitError, ok := err.(*exec.ExitError); ok {
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log.Printf("exitError.ExitCode() is %d\n", exitError.ExitCode())
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}
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} else {
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log.Println("success! // ran without error (exit code zero)")
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}
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}
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func runLinuxCommand(cmdArgs []string) (string, error) {
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process := exec.Command(cmdArgs[0], cmdArgs[1:len(cmdArgs)]...)
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process.Stdin = os.Stdin
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process.Stderr = os.Stderr
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stdOut, err := process.StdoutPipe()
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if err != nil {
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return "", err
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}
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if err := process.Start(); err != nil {
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return "", err
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}
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bytes, err := ioutil.ReadAll(stdOut)
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if err != nil {
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return "", err
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}
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err = process.Wait()
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lookupError(err)
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log.Println(string(bytes))
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return string(bytes), err
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}
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