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package main
import "log"
import "strings"
import "os"
import "os/exec"
import "io/ioutil"
import "errors"
// import "bufio"
// import "github.com/davecgh/go-spew/spew"
/*
import "time"
import "runtime"
import "runtime/debug"
import "runtime/pprof"
import "git.wit.org/wit/gui"
import "git.wit.org/wit/shell"
import "github.com/gobuffalo/packr"
*/
func runSimpleCommand(s string) {
cmd := strings.TrimSpace(s) // this is like 'chomp' in perl
cmd = strings.TrimSuffix(cmd, "\n") // this is like 'chomp' in perl
cmdArgs := strings.Fields(cmd)
runLinuxCommand(cmdArgs)
}
var geom string = "120x30+500+500"
func xterm(cmd string) {
var tmp []string
var argsXterm = []string{"nohup", "xterm", "-geometry", geom}
tmp = append(argsXterm, "-hold", "-e", cmd)
log.Println("xterm cmd=", cmd)
go runCommand(tmp)
}
func runCommand(cmdArgs []string) {
log.Println("runCommand() START", cmdArgs)
process := exec.Command(cmdArgs[0], cmdArgs[1:len(cmdArgs)]...)
// process := exec.Command("xterm", "-e", "ping localhost")
log.Println("runCommand() process.Start()")
process.Start()
log.Println("runCommand() process.Wait()")
err := process.Wait()
lookupError(err)
log.Println("runCommand() NEED TO CHECK THE TIME HERE TO SEE IF THIS WORKED")
log.Println("runCommand() OTHERWISE INFORM THE USER")
log.Println("runCommand() END", cmdArgs)
}
func lookupError(err error) {
var (
ee *exec.ExitError
pe *os.PathError
)
if errors.As(err, &ee) {
log.Println("ran, but non-zero exit code =", ee.ExitCode()) // ran, but non-zero exit code
} else if errors.As(err, &pe) {
log.Printf("os.PathError = %v", pe) // "no such file ...", "permission denied" etc.
} else if err != nil {
log.Printf("something really bad happened general err = %v", err) // something really bad happened!
if exitError, ok := err.(*exec.ExitError); ok {
log.Printf("exitError.ExitCode() is %d\n", exitError.ExitCode())
}
} else {
log.Println("success! // ran without error (exit code zero)")
}
}
func runLinuxCommand(cmdArgs []string) (string, error) {
process := exec.Command(cmdArgs[0], cmdArgs[1:len(cmdArgs)]...)
process.Stdin = os.Stdin
process.Stderr = os.Stderr
stdOut, err := process.StdoutPipe()
if err != nil {
return "", err
}
if err := process.Start(); err != nil {
return "", err
}
bytes, err := ioutil.ReadAll(stdOut)
if err != nil {
return "", err
}
err = process.Wait()
lookupError(err)
log.Println(string(bytes))
return string(bytes), err
}
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