Merge pull request #12 from PouuleT/refactoring

Refactoring

Author: PouuleT

exec.go

@@ -0,0 +1,56 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"strings"
+)
+
+func execCmd(cmdString string) error {
+	// Parse the command to execute it
+	cmdElmnts := strings.Split(cmdString, " ")
+	if len(cmdElmnts) == 0 {
+		return fmt.Errorf("no cmd given")
+	}
+
+	// Get the current working directory
+	pwd, err := os.Getwd()
+	if err != nil {
+		log.Warnf("couldn't get current working directory")
+		return err
+	}
+
+	// Lookup the full path of the binary to be executed
+	bin, err := exec.LookPath(cmdElmnts[0])
+	if err != nil {
+		log.Warnf("Failed to find bin %s", cmdElmnts[0])
+		return err
+	}
+
+	// Pass stdin / stdout / stderr as proc attributes
+	procAttr := os.ProcAttr{
+		Files: []*os.File{os.Stdin, os.Stdout, os.Stderr},
+		Dir:   pwd,
+	}
+
+	log.Debugf("Going to run `%s ( %s ) %s`", cmdElmnts[0], bin, strings.Join(cmdElmnts[1:], " "))
+
+	// Start the process
+	proc, err = os.StartProcess(bin, cmdElmnts, &procAttr)
+	if err != nil {
+		log.Warnf("Failed to start process")
+		return err
+	}
+
+	// Wait until the end
+	state, err := proc.Wait()
+	if err != nil {
+		log.Warnf("Error while waiting for proc")
+		return err
+	}
+
+	log.Debugf("Result : %s", state)
+
+	return nil
+}